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Dwi Marsiska Driptufany
"Peningkatan jumlah keramba jaring apung yang berada di perairan juga dapat memberikan pengaruh pada komponen-komponen yang berada di daratan seperti penggunaan tanah di darat. Oleh karena itu penelitian ini bertujuan untuk mengetahui dampak budidaya keramba jaring apung Danau Maninjau terhadap perubahan penggunaan tanah di sekitar Danau Maninjau. Metode yang digunakan untuk melihat perubahan penggunaan tanah dilakukan dengan teknik interpretasi citra dan GIS, dan metode Kernel Density serta analisis statistik regresi logistik.
Hasil analisis menunjukkan bahwa pola perubahan sebaran KJA selama jangka waktu 17 tahun menunjukkan bahwa lokasi KJA dengan density perubahan yang tinggi berada di lokasi yang berdekatan dengan akses jalan, sungai dan permukiman. Hal ini menunjukkan bahwa pertumbuhan jumlah KJA berorientasi terhadap keterjangkauan akses untuk kemudahan pengangkutan sarana produksi dan distribusi produksi dari budidaya ikan keramba jaring apung. Sedangkan pola sebaran perubahan penggunaan tanah permukiman mendekati akses jalan dan banyak permukiman yang tumbuh (muncul) di sekitar tepi Danau Maninjau.
Berdasarkan analisis regresi logistik dapat disimpulkan bahwa kecenderungan jarak dari danau merupakan faktor yang paling berpengaruh pada perubahan penggunaan tanah yang menunjang budidaya KJA di sekitar Danau Maninjau. Hal ini menunjukkan bahwa aktivitas di Danau Maninjau berdampak pada penggunaan tanah sebagai penopang KJA di kawasan Danau Maninjau.

Increasing the number of floating cages in waters that are participates effect to the components of that are in the mainland as landuse on land. Therefore, this study aims to determine the impact of floating net of cultivation Maninjau the conversion of landuse around the Lake Maninjau. The method used to see the changes in land use with image interpretation and GIS techniques, and Kernel Density method and logistic regression statistical analysis.
The analysis showed that the pattern of changes in the distribution of KJA for a period of 17 years showed that the KJA locations with a high density changes were in locations adjacent to the access roads, rivers and the settlement. This suggests that the growth of the amount of KJA oriented to the affordability of access for the ease transportation of facilities production and distribution of the cultivation production of fish floating net cages. While the distribution pattern of land use and settlement approach the access road many settlements growing (up) around the edges of Lake Maninjau.
Based on logistic regression analysis concluded that the tendency of the distance of the lake is the most influential factor in the conversion of land use that support the cultivation KJA around the Maninjau. This indicates that activity in Maninjau impact on land use in the region for support KJA Maninjau.
"
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2014
T41501
UI - Tesis Membership  Universitas Indonesia Library
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Daniel
"Hidrogen adalah salah satu energi terbarukan yang menjanjikan dan berpotensi menjadi pengganti bahan bakar fosil.Namun, aplikasi hidrogen sebagai bahan bakar memiliki kekurangan, yaitu dalam hal penyimpanannya. Dalam suhu kamar dan tekanan atmosfir, hidrogen memiliki rasio energi yang sangat rendah terhadap volumenya jika disimpan dalam bentuk gas sehingga perlu dilakukan berbagai penelitian yang berkaitan dengan metode dan material untuk menyimpan hidrogen terus dilakukan. Sejauh ini metode penyimpanan hidrogen memakai prinsip adsorpsi dengan karbon aktif berbentuk granular sebagai adsorben sangat menjanjikan karena bisa menurunkan tekanan dalam tangki dengan kapasitas penyimpanan yang relatif sama. Pada penelitian ini, karbon aktif yang digunakan pada penelitian ini adalah karbon aktif berbahan dasar batu bara. Proses pengambilan data dilakukan dengan metode volumetrik dan tipe adsorpsi yang digunakan adalah adsorpsi isotermal. Penyerapan dilakukan pada 3 temperatur berbeda, pertama pada temperatur 35°C dan tekanan mencapai 40 bar, yang kedua adalah pada temperatur 25°C dan tekanan mencapai 40 bar dan ketiga adalah pada temperatur 0°C dan tekanan mencapai 40 bar. Pada temperatur 35°C, penyerapan hidrogen sebesar 0.00228995 kg/kg pada tekanan 3935.22 kPa. Pada temperatur 25°C, penyerapan hidrogen sebesar 0.00249057 kg/kg pada tekanan 3939.24 kPa Pada temperatur 0°C, penyerapan hidrogen sebesar 0.00267156kg/kg pada tekanan 3939.24 kPa. Data yang didapat selanjutnya dikorelasi dengan menggunakan persamaan model Langmuir, Toth, dan Langmuir-Freudlich.

Hydrogen is one of promising and potential new energy sources as the substitute of fossil fuel.But, the application of hydrogen as fuel still has weakness in a storage system. Inroom temperature and atmosphere pressure, hydrogen has a very low energy/volume ratio if the hydrogen is stored in gas phase, so it's needed to do some research about the method and materials to adsorp hydrogen. Nowadays, hydrogen adsorption?s method using granular activated carbon as the adsorbent is very promising since can reduce the pressure in cell with the adsorption capacity relatively same as other methods. In this research, the activated carbon which used is coal based. The method which used in this research is volumetric method and the type of adsorption in this research is isothermal adsorption. The adsorptions in this research are in 3 temperature, first adsorption in 35°C and the pressure up to 40 bars and second adsorption in 25°C and the pressure up to 40 bars and third adsorption in 0°C and the pressure up to 40 bars. At temperature 35°C, the hydrogen adsorption is 0.00228995 kg/kg at 3935.22 kPa. At temperature 25°C, the hydrogen adsorption is 0.00249057 kg/kg at 3939.24 kPa At temperature 0oC, the hydrogen adsorption is 0.00267156 kg/kg at 3939.24 kPa.The Data are corelated with some model equations Langmuir, Toth, and Langmuir-Freudlich."
Depok: Fakultas Teknik Universitas Indonesia, 2012
S42272
UI - Skripsi Open  Universitas Indonesia Library
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Lilik Zulaihah
"Poliaromatik hidrokarbon (PAH) yang dikeluarkan oleh gas buang kendaraan bermotor ada dua fasa, yaitu fasa partikulat dan gas. PAH tersebut berasal dari bahan bakar dan dari hasil pembakaran yang tidak sempurna. Teknik pengambilan contoh yang digunakan adalah teknik filtrasi aerosol dengan menggunakan amberlite XAD-7 dan Florisil sebagai adsorben, dengan tujuan dapat menyerap PAH dari emisi gas buang kendaraan diesel.
Untuk mendapatkan kondisi yang baik, pada pengambilan contoh dilakukan variasi laju pembakaran bahan bakar/laju alir gas buang pada 30, 45 dan 60 liter per menit setts waktu pengambilan contoh selama 10, 30 dan 50 menit. Suhu adsorben tidak divariasi, akan tetapi diamati, yaitu pada laju pembakaran/laju alir gas buang pada 30 dan 45 liter per menu suhu adsorben menunjukkan antara 20 sampai 40°C, sedangkan pada laju pembakaran/laju alir gas buang pada 60 liter per menit antara 20 sampai 53°C. Setelah di desorpsi kadar PAH dari emisi gas buang diukur dengan menggunakan alat kromnatografi gas.
Hasil penelitian menunjukkan makin tinggi laju pembakaran/laju alir gas buang, makin banyak kadar PAH yang dikeluarkan dan makin lama waktu pengambilan contoh, makin banyak kadar PAH yang terserap oleh adsorben, yaitu 48, 76 dan 153 mg/kg adsorben pada adsorben amberlite XAD-7 dan 4, 13 dan 16 mg/kg adsorben pada Florisil.
Jenis PAH yang terserap sebanyak 11 jenis dengan adsorben amberlite XAD-7 dan 6 jenis dengan adsorben Florisil. Penelitian ini menunjukkan bahwa kemampuan penyerapan adsorben amberlite XAD-7 (total PAH 153 mg/kg adsorben) lebih tinggi dari pada Florisil (total PAH maksimum 16 mg/kg adsorben). Dengan asumsi bahwa toluen dapat mengadsorpsi PAH secara kuantitatif diperoleh sebanyak 7 jenis PAH untuk laju pembakarau/laju alir gas buang pada 30 dan 45 liter/menit pada waktu 10 menit.

Polyaromatic Hydrocarbon (PAH) which is discharged by vehicle exhaust gas has two phase, there are particulate phase and semi volatile phase. PAH comes from fuel and the unperfect result of combustion.
Sampling technique that has been used was Aerosol Filtration Technique using amberlite XAD-7 and Florisil as adsorbent. The aim of this experiment is to adsorb PAH of diesel exhaust gas emission.
To reach a good condition, there was a variation of exhaust gas flow rate at 30, 45 and 60 liter per minute and the time of sampling at 10, 30 and 50 minutes. Adsorption temperature was not variated, but it was only observed . The exhaust gas flow rate of 30 and 45 liter per minute showed adsorption temperature value between 20 until 40° C and at exhaust gas flow rate of 60 liter per minute showed adsorption temperature value between 20 until 53° C. After desorption process, the concentration of PAH of exhaust gas emission was measured by using Gas Chromatography.
The experiment result showed that the increasing of exhaust gas flow rate mode a lot of PAH concentration discharge and the foyer time of sampling mode PAH concentration was more adsorb there were 48, 76 and 153 mg/kg adsorbent of XAD-7 and 4, 13 and 16 mg/kg adsorbent of florisil.
The were is kind of PAH adsorb by amberlite XAD-7 and 6 kind by Florisil. The experiment showed, the total adsorption of amberlite XAD-7 (153 mg/kg adsorbent) was higher than forisil (16 mglkg absorbent). It was assumpted that tolune could adsorb PAH qualitatively and got 7 kinds of PAH at axhaust gas flow rate of 30 and 45 liter/minute on 10 minutes."
Depok: Universitas Indonesia, 1998
T-Pdf
UI - Tesis Membership  Universitas Indonesia Library
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Dion Jamal S.
"Mineral liat seperti bentonit dapat dimodifikasi dengan memasukkan hidroksikation ke dalam ruang antar lapisannya membentuk pilar, yang membuat struktur liat tersebut terbuka secara permanen. Pilarisasi dilakukan pada bentonit alam Tapanuli, Sumatera Utara. Agen pemilar adalah polikation Al tipe keggin [Al13O4(OH)24(H2O)12]7+ yang dibuat dengan mencampurkan larutan AlCl3 dengan NaOH hingga mencapai rasio molar OH-/Al3+ sebesar 2,2. Setelah dikalsinasi pada 400oC selama 6 jam, karakteristik bentonit terpilar memperlihatkan terjadinya peningkatan jarak ruang basal dari 7,19 ? (B) menjadi 15,49 ? (B4) dan 16,05 ? (B10). Uji daya serap bentonit terhadap ion Co2+, Ni2+, dan Cd2+ dilakukan pada konsentrasi ion logam 100, 150, dan 200 mg/L., konsentrasi ion yang tersisa diukur dengan alat AAS. Terjadi perbedaan urutan adsorpsi ion logam, dimana pada bentonit alami urutannya adalah Ni2+>Co2+>Cd2+ sedangkan pada bentonit terpilar urutannya Co2+>Cd2+>Ni2+. Dibuat bentonit teraktivasi terpilar, yaitu bentonit terpilar yang proses pemilarannya dilakukan setelah bentonit diaktivasi terlebih dahulu. Aktivasi dilakukan dengan pemanasan pada 200oC (seri BP) dan dengan H2SO4 0,025 M (seri BA). Ternyata, daya serap bentonit teraktivasi terpilar ini lebih baik dari sebelumnya, dan BP10 merupakan bentonit terpilar dengan daya serap paling besar. Uji pengaruh pH terhadap daya serap bentonit terpilar (B4, BP4, dan BA4) dilakukan dengan buffer fosfat pH 4, 5, dan 6. Bentonit terpilar yang diuji menyerap lebih baik pada pH 6. Kata kunci : bentonit, pilarisasi, polikation Al. x + 49 hal ; gbr ; tab ; lamp"
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2005
S-Pdf
UI - Skripsi Membership  Universitas Indonesia Library
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Simanullang, Guarda
"Bentonit adalah nama dagang untuk lempung monmorilonit (smektit)
yang dapat digunakan sebagai adsorben, zat pemutih, katalisator. Bentonit
alam karangnunggal merupakan jenis kalsium bentonit mempunyai KTK
(Kapasitas Tukar Kation) yang relatif besar (80-140 mek/IOOg). Aktivasi asam
dan aktivasi pemanasan dilakukan dengan maksud memperoleh bentonit
dengan nilai KTK yang lebih besar. Aktivasi asam divariasikan dari
konsentrasi 0,025-2,5 M H2SO4, aktivasi pemanasan divariasikan 100-500°C.
KTK yang lebih besar dari bentonit tanpa aktivasi diperoleh pada aktivasi
0,025 M H2SO4 dan aktivasi pemanas'anlOO °C yaitu 47,41 mek/IOOg dan
48,82 mek/100g. Larutan (50 ppm), Zn^^ (50 ppm) diadsorpsi secara optimum oleh bentonit aktivasi 0,025 H2SO4 tetapi Mn^ (50 ppm) diadsorpsi
secara optimum oleh bentonit aktivasi 0,25 M H2SO4. Aktivasi diatas 100 °C
mengakibatkan adsorpsi bentonit terhadap larutan logam cenderung
berkurang. Grafik adsorpsi bentonit terhadap logam yang dibuffer
menunjukkan pada pH 5-pH 6 adalah kondisi terbaik penyerapan larutan
logam. Analisa XRD memperlihatkan tidak ada perubahan yang berarti
terhadap sudut difraksi (0) dan jarak pisah bidang kisi pemantui (d) sehingga
dapat dikatakan tidak terjadi kerusakan struktur bentonit"
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2003
S-Pdf
UI - Skripsi Membership  Universitas Indonesia Library
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Mohamad Jeferi
"Bentonit merupakan mineral alimuna siilkat terhidrat dengan beberapa
logam alkali dan alkali tanah yang terikat didalamnya. Ion-ion logam tersebut
dapat diganti oleh kation lain dan dapt menyerap air secara reversibel.
Struktur bentonit sendiri terdiri dari tiga lapis atau berbentuk pebandingan 2 :
1, yaitu tetrahedral-oktahedral-tetrahedral (T-O-T). Secara umum bentonit
dibagi atas dua golongan yaitu natrium bentonit dan kalsium bentonit dengan
rumus {A\^\ fe^\ Cr®^ Mn^^) (Aly^'+ Si4.y^^) OioCOH; F)2 Xo.ss-
Penelitian ini bertujuan untuk mempelajari kemampuan bentonit alam
Karangnunggal yang diaktivasi dalam rangka untuk menyerap ion logam Ni^"",
Co^'^ dan Gd^"^ di dalam air.
Untuk mengetahui daya serapnya, bentonit tersebut divariasikan
dengan 3 perlakuan 1. Bentonit alam Karangnunggal tanpa aktivasi
2. Bentonit alam Karangnunggal diaktivasi dengan H2SO4 0,025 M; 0,05
M; 0,10 M; 0,25 M; 0.5 M; 1,0 M; 1,5 M; 2,0 M dan 2,5 M.
3. Bentonit alam Karangnunggal diaktivasi dengan pemanasan 150 °C:
200 °C: 250 °C; 300 °C dan 500 °C.
Masing-masing bentonit diuji daya serapnya terhadap ion logam Ni^'^,
Co^"" dan Cd^"" dengan pengadukan menggunakan shaker selama 120 menit.
selanjutnya diukur adsorpsinya dengan menggunakan alat AAS. Selain itu
untuk mengetahui adanya perubahan struktur dari bentonit dilakukan dengan
MU.IK PEHPUSTfiKAAN
menggunakan alat XRD. _____F_MIPA-U I
Dari percobaan yang dilakukan diperoleh hasil adsorpsi maksimal
pada bentonit alam Karangnunggal dengan aktivasi asam sulfat 0,025 M dan
aktivasi pemanasan pada suhu 150-200 °C jika dibandingkan dengan
bentonit tanpa aktivasi. Ketika Ni^"" 0,1703 mek dicampurkan dengan 0,5 g
bentonit aktivasi pemanasan, Ni^"" yang terserap mencapai 0,1360 mek/g
(200 °C) dan 0,1549 mek/g (0,025 M), untuk Co^"^ 0,1697 mek/g yang
terserap mencapai 0,2111 mek/g (150 °C) dan 0,1844 mek/g (0,025 M) serta
untuk Cd^"" 0,0890 mek yang terserap mencapai 0,1218 mek/g (150 °C) dan
0,1159 mek/g (0,025 M).
Selanjutnya bentonit yang menyerap maksimal dilakukan varigsi
terhadap pH buffer phosfat 4, 5 dan 6. Didapat hasil untuk Ni^" yang terserap
0,1023 mek/g (0,025 M) dan 0,0971 mek/g (150 °C), untuk yang terserap 0,1439 mek/g (0,025 M) dan 0,1575 mek/g (150 °C) serta untuk yang
terserap 0,1615 mek/g (0,025 M) dan 0,1615 mek/g (150 °C)."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2003
S-Pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
Maryam Afifah
"ABSTRAK
Zat warna merupakan polutan dalam limbah industri tekstil yang berdampak terhadap estetika, kesehatan, dan lingkungan, salah satunya adalah zat warna anionik Congo Red yang bersifat karsinogen. Tujuan penelitian ini adalah untuk mengetahui kondisi optimum dalam menyisihkan zat warna anionik Congo Red dengan metode adsorpsi menggunakan karbon aktif batu bara dan tempurung kelapa serta regenerasi dan perencanaan aplikasinya di lapangan. Metode penelitian yang digunakan adalah shaked batch dengan variasi kondisi pH, dosis adsorben, dan waktu kontak menggunakan Two Level Factorial Design. Hasil penelitian memperlihatkan efisiensi penghilangan zat warna optimum oleh karbon aktif tempurung kelapa pada kondisi pH 2,2, dosis adsorben 5,5 gram, dan waktu kontak 45 menit dan batu bara pada kondisi pH 3,8, dosis adsorben 5,5 gram, dan waktu kontak 100 menit sama, yaitu sebesar 74,67%. Efisiensi regenerasi dengan larutan aseton 60% adalah sebesar 58,06% untuk karbon aktif tempurung kelapa, dan 77,42% untuk karbon aktif batu bara. Adsorpsi Congo Red menggunakan kedua jenis karbon aktif ini dapat mencapai efisiensi optimum yang sama dengan variasi kombinasi yang berbeda, namun efisiensi regenerasi kedua karbon aktif ini berbeda satu sama lain. Perencanaan aplikasi metode ini di lapangan berdasarkan hasil penelitian dapat berupa unit adsorpsi dengan metode mixing dalam instalasi dua susunan seri menggunakan karbon aktif batu bara.

ABSTRACT
The dye is a pollutant in the textile industry wastewater that adversely affect the aesthetic, health, and environmental qualities, one of which is anionic dyes Congo Red which is a carcinogen. The purpose of this study is to determine the optimum conditions designated to remove anionic dye Congo Red by adsorption with coconut shell and coal activated carbon, along with its regeneration and application. The method used is a shaked batch with variations for conditions of pH, adsorbent dosage and contact time using Two Level Factorial Design. The results showed the optimum efficiency of the dye removal by both coconut shell with condition of pH 2,2, 5,5 gram of adsorbent dosage and 45 minutes of contact time and by coal based activated carbon with condition of pH 3,8, 5,5 gram of adsorbent dosage, and 100 minutes of contact time were the same by 74.67%. The regeneration efficiencies with acetone 60% are achieved by 58.06% for coconut shell based activated carbon, and 77.42% for the coal one. Adsorption of Congo Red using both types of activated carbon can achieve the same optimum efficiency with different variations combination. However, the efficiency of both activated carbon regenerations are different one from another. This method could be applied based on this research results with a mixing adsorption unit in a double series plant using coal based activated carbon. "
Fakultas Teknik Universitas Indonesia, 2014
S54896
UI - Skripsi Membership  Universitas Indonesia Library
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Arief Ramadhan
"Tesis ini meneliti mengenai pengaruh pengurangan mineral pengotor pada bentonit menggunakan alat hidrosiklon dan modifikasi pertukaran kation dengan penambahan dosis surfaktan terhadap basal spasi organobentonit yang dihasilkan serta terhadap sifat-sifat dari nanokomposit karet alam/organobentonit. Nanokomposit karet alam/organobentonit dibuat dengan teknik pelelehan kompon.
Hasil penelitian menunjukkan proses reduksi mineral pengotor pada bentonit telah mampu mengurangi kandungan senyawa pengotor, seperti Fe2O3, CaO, dan K2O. Sementara itu, peningkatan dosis surfaktan pada bentonit dapat meningkatkan basal spasi pada organobentonit. Organobentonit rendah mineral pengotor ini mampu menghasilkan nanokomposit dengan sifat mekanik yang lebih baik dari nanokomposit berbahan pengisi bentonit alam.

This thesis are to studies the effect of the reduction of mineral impurities in the bentonite using hydrocyclone and the effect of cation exchange modification with the addition of surfactant dosage on the basal spacing of organobentonit and the properties of natural rubber/organobentonite nanocomposites Natural rubber/organobentonite nanocomposites made by melting compound technique.
The results showed the reduction process of mineral impurities in the bentonite has been able to reduce the content of impurities, such as Fe2O3, CaO, and K2O. Meanwhile, an increase in the dose of surfactant on bentonite may increase the basal spacing of organobentonite. Low mineral impurities organobentonite is capable of producing nanocomposite with better mechanical properties than nanocomposite filled pristine bentonite.
"
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2014
T42181
UI - Tesis Membership  Universitas Indonesia Library
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Eldia Anggidenia
"[Penelitian mengenai potensi makroalga alami Sargassum polycystum
dan makroalga budidaya Eucheuma cottonii dalam menyerap dan menyimpan
karbon serta nutrien di Pulau Panjang, Teluk Banten telah dilakukan pada bulan
Oktober hingga November 2014. Penelitian bertujuan untuk mengetahui laju
penyerapan karbon, kandungan nutrien dan produktivitas primer dari makroalga S.
polycystum dan E. cottonii. Lokasi penelitian terletak di bagian hamparan gosong
karang dan berlumpur dengan kedalaman 0,5-5 m. Pengamatan pertumbuhan dan
laju penyerapan karbon menggunakan metode penandaan thallus pada 30 sampel
makroalga setiap hari selama 7 hari. Sampel makroalga selanjutnya dianalisis
kandungan nutriennya. Hasil penelitian didapatkan estimasi laju penyerapan
karbon S. polycystum dan E. cottonii adalah 0,0081 gC/hari dan 0,0083 gC/hari.
Kandungan karbon, nitrogen dan fosfat di S. polycystum adalah sebanyak 6,84%,
1,72% dan 0,009% sedangkan kandungan karbon, nitrogen dan fosfat di E.
cottonii adalah 5,99%, 0,67% dan 0,006%. Berdasarkan analisis statistik dengan
uji t, terdapat perbedaan yang signifikan pada laju pertumbuhan, kandungan
nitrogen dan fosfat S. polycystum dengan E. cottonii. Sedangkan untuk kandungan
karbon tidak terdapat perbedaan yang signifikan antara S. polycystum dengan E.
cottonii. Selanjutnya, uji korelasi didapatkan bahwa adanya korelasi antara laju
pertumbuhan S. polycystum dan E. cottonii dengan kandungan nitrogen masingmasing
sedangkan antara laju pertumbuhan dengan kandungan karbon dan fosfat
tidak terdapat korelasi. Produktivitas primer diukur dengan metode botol terang
dan botol gelap yang dimodifikasi. Pengukuran produktivitas primer dilakukan
pada kedalaman 0,5 m untuk S. polycystum dan 0,1 m untuk E. cottonii.
Kandungan oksigen terlarut diukur dengan DO meter. Hasil penelitian didapatkan
rata-rata produktivitas primer S. polycystum sebesar 10,259 ± 3,385 mgC/g/hari
dan E. cottonii sebesar 7,757 ± 4,398 mgC/g/hari.;The research about the potency of wild macroalgae Sargassum polycystum
and cultivation macroalgae Eucheuma cottonii to absorb and store carbon also
nutrient in Panjang Island, Banten Bay was held on October until November 2014.
The research was aimed to estimate carbon sequestration, nutrient content and
primary productivity from macroalgae S. polycystum and E. cottonii. Location of
the research in the stretch of reef and muddy with a depth of 0,5-5 m. The
observation of growth rate and carbon sequestration used thallus marking method
in 30 macroalgae shoots everyday for 7 days. Macroalgae was analyzed its
nutrient content. The results showed that estimation carbon sequestration by S.
polycystum and E. cottonii were 0,0081 gC/day and 0,0083 gC/day. The content
of carbon, nitrogent and phosphor for Macroalgae S. polycystum were 6,84%,
1,72% and 0,009% respectively while the content of carbon, nitrogent and
phosphor for Macroalgae E. cottonii were 5,99%, 0,67% and 0,006% respectively.
Based on statistical analysis by t test, there was found significant difference on the
growth rate, nitrogent and phosphor content of S. polycystum with E. cottonii.
While for the carbon content, there was no significant difference between S.
polycystum with E. cottonii. Furthermore, correlation test showed that there was a
correlation between the growth rate of S. polycystum and E. cottonii with
nitrogent content respectively while between the growth rate with carbon and
phosphor content, there was no correlation. Primary productivity were measured
by the light and dark bottle method with modification. Measurement of primary
productivity was held at a depth of 0,5 m from the surface for S. polycystum and
0,1 m from the surface for E. cottonii. Dissolved oxygen was measured by DO
meter. The result showed that mean of primary productivity for S. polycystum was
10,259 ± 3,385 mgC/g/day and E. cottonii was 7,757 ± 4,398 mgC/g/day;The research about the potency of wild macroalgae Sargassum polycystum
and cultivation macroalgae Eucheuma cottonii to absorb and store carbon also
nutrient in Panjang Island, Banten Bay was held on October until November 2014.
The research was aimed to estimate carbon sequestration, nutrient content and
primary productivity from macroalgae S. polycystum and E. cottonii. Location of
the research in the stretch of reef and muddy with a depth of 0,5-5 m. The
observation of growth rate and carbon sequestration used thallus marking method
in 30 macroalgae shoots everyday for 7 days. Macroalgae was analyzed its
nutrient content. The results showed that estimation carbon sequestration by S.
polycystum and E. cottonii were 0,0081 gC/day and 0,0083 gC/day. The content
of carbon, nitrogent and phosphor for Macroalgae S. polycystum were 6,84%,
1,72% and 0,009% respectively while the content of carbon, nitrogent and
phosphor for Macroalgae E. cottonii were 5,99%, 0,67% and 0,006% respectively.
Based on statistical analysis by t test, there was found significant difference on the
growth rate, nitrogent and phosphor content of S. polycystum with E. cottonii.
While for the carbon content, there was no significant difference between S.
polycystum with E. cottonii. Furthermore, correlation test showed that there was a
correlation between the growth rate of S. polycystum and E. cottonii with
nitrogent content respectively while between the growth rate with carbon and
phosphor content, there was no correlation. Primary productivity were measured
by the light and dark bottle method with modification. Measurement of primary
productivity was held at a depth of 0,5 m from the surface for S. polycystum and
0,1 m from the surface for E. cottonii. Dissolved oxygen was measured by DO
meter. The result showed that mean of primary productivity for S. polycystum was
10,259 ± 3,385 mgC/g/day and E. cottonii was 7,757 ± 4,398 mgC/g/day;The research about the potency of wild macroalgae Sargassum polycystum
and cultivation macroalgae Eucheuma cottonii to absorb and store carbon also
nutrient in Panjang Island, Banten Bay was held on October until November 2014.
The research was aimed to estimate carbon sequestration, nutrient content and
primary productivity from macroalgae S. polycystum and E. cottonii. Location of
the research in the stretch of reef and muddy with a depth of 0,5-5 m. The
observation of growth rate and carbon sequestration used thallus marking method
in 30 macroalgae shoots everyday for 7 days. Macroalgae was analyzed its
nutrient content. The results showed that estimation carbon sequestration by S.
polycystum and E. cottonii were 0,0081 gC/day and 0,0083 gC/day. The content
of carbon, nitrogent and phosphor for Macroalgae S. polycystum were 6,84%,
1,72% and 0,009% respectively while the content of carbon, nitrogent and
phosphor for Macroalgae E. cottonii were 5,99%, 0,67% and 0,006% respectively.
Based on statistical analysis by t test, there was found significant difference on the
growth rate, nitrogent and phosphor content of S. polycystum with E. cottonii.
While for the carbon content, there was no significant difference between S.
polycystum with E. cottonii. Furthermore, correlation test showed that there was a
correlation between the growth rate of S. polycystum and E. cottonii with
nitrogent content respectively while between the growth rate with carbon and
phosphor content, there was no correlation. Primary productivity were measured
by the light and dark bottle method with modification. Measurement of primary
productivity was held at a depth of 0,5 m from the surface for S. polycystum and
0,1 m from the surface for E. cottonii. Dissolved oxygen was measured by DO
meter. The result showed that mean of primary productivity for S. polycystum was
10,259 ± 3,385 mgC/g/day and E. cottonii was 7,757 ± 4,398 mgC/g/day;The research about the potency of wild macroalgae Sargassum polycystum
and cultivation macroalgae Eucheuma cottonii to absorb and store carbon also
nutrient in Panjang Island, Banten Bay was held on October until November 2014.
The research was aimed to estimate carbon sequestration, nutrient content and
primary productivity from macroalgae S. polycystum and E. cottonii. Location of
the research in the stretch of reef and muddy with a depth of 0,5-5 m. The
observation of growth rate and carbon sequestration used thallus marking method
in 30 macroalgae shoots everyday for 7 days. Macroalgae was analyzed its
nutrient content. The results showed that estimation carbon sequestration by S.
polycystum and E. cottonii were 0,0081 gC/day and 0,0083 gC/day. The content
of carbon, nitrogent and phosphor for Macroalgae S. polycystum were 6,84%,
1,72% and 0,009% respectively while the content of carbon, nitrogent and
phosphor for Macroalgae E. cottonii were 5,99%, 0,67% and 0,006% respectively.
Based on statistical analysis by t test, there was found significant difference on the
growth rate, nitrogent and phosphor content of S. polycystum with E. cottonii.
While for the carbon content, there was no significant difference between S.
polycystum with E. cottonii. Furthermore, correlation test showed that there was a
correlation between the growth rate of S. polycystum and E. cottonii with
nitrogent content respectively while between the growth rate with carbon and
phosphor content, there was no correlation. Primary productivity were measured
by the light and dark bottle method with modification. Measurement of primary
productivity was held at a depth of 0,5 m from the surface for S. polycystum and
0,1 m from the surface for E. cottonii. Dissolved oxygen was measured by DO
meter. The result showed that mean of primary productivity for S. polycystum was
10,259 ± 3,385 mgC/g/day and E. cottonii was 7,757 ± 4,398 mgC/g/day;The research about the potency of wild macroalgae Sargassum polycystum
and cultivation macroalgae Eucheuma cottonii to absorb and store carbon also
nutrient in Panjang Island, Banten Bay was held on October until November 2014.
The research was aimed to estimate carbon sequestration, nutrient content and
primary productivity from macroalgae S. polycystum and E. cottonii. Location of
the research in the stretch of reef and muddy with a depth of 0,5-5 m. The
observation of growth rate and carbon sequestration used thallus marking method
in 30 macroalgae shoots everyday for 7 days. Macroalgae was analyzed its
nutrient content. The results showed that estimation carbon sequestration by S.
polycystum and E. cottonii were 0,0081 gC/day and 0,0083 gC/day. The content
of carbon, nitrogent and phosphor for Macroalgae S. polycystum were 6,84%,
1,72% and 0,009% respectively while the content of carbon, nitrogent and
phosphor for Macroalgae E. cottonii were 5,99%, 0,67% and 0,006% respectively.
Based on statistical analysis by t test, there was found significant difference on the
growth rate, nitrogent and phosphor content of S. polycystum with E. cottonii.
While for the carbon content, there was no significant difference between S.
polycystum with E. cottonii. Furthermore, correlation test showed that there was a
correlation between the growth rate of S. polycystum and E. cottonii with
nitrogent content respectively while between the growth rate with carbon and
phosphor content, there was no correlation. Primary productivity were measured
by the light and dark bottle method with modification. Measurement of primary
productivity was held at a depth of 0,5 m from the surface for S. polycystum and
0,1 m from the surface for E. cottonii. Dissolved oxygen was measured by DO
meter. The result showed that mean of primary productivity for S. polycystum was
10,259 ± 3,385 mgC/g/day and E. cottonii was 7,757 ± 4,398 mgC/g/day, The research about the potency of wild macroalgae Sargassum polycystum
and cultivation macroalgae Eucheuma cottonii to absorb and store carbon also
nutrient in Panjang Island, Banten Bay was held on October until November 2014.
The research was aimed to estimate carbon sequestration, nutrient content and
primary productivity from macroalgae S. polycystum and E. cottonii. Location of
the research in the stretch of reef and muddy with a depth of 0,5-5 m. The
observation of growth rate and carbon sequestration used thallus marking method
in 30 macroalgae shoots everyday for 7 days. Macroalgae was analyzed its
nutrient content. The results showed that estimation carbon sequestration by S.
polycystum and E. cottonii were 0,0081 gC/day and 0,0083 gC/day. The content
of carbon, nitrogent and phosphor for Macroalgae S. polycystum were 6,84%,
1,72% and 0,009% respectively while the content of carbon, nitrogent and
phosphor for Macroalgae E. cottonii were 5,99%, 0,67% and 0,006% respectively.
Based on statistical analysis by t test, there was found significant difference on the
growth rate, nitrogent and phosphor content of S. polycystum with E. cottonii.
While for the carbon content, there was no significant difference between S.
polycystum with E. cottonii. Furthermore, correlation test showed that there was a
correlation between the growth rate of S. polycystum and E. cottonii with
nitrogent content respectively while between the growth rate with carbon and
phosphor content, there was no correlation. Primary productivity were measured
by the light and dark bottle method with modification. Measurement of primary
productivity was held at a depth of 0,5 m from the surface for S. polycystum and
0,1 m from the surface for E. cottonii. Dissolved oxygen was measured by DO
meter. The result showed that mean of primary productivity for S. polycystum was
10,259 ± 3,385 mgC/g/day and E. cottonii was 7,757 ± 4,398 mgC/g/day]"
2015
T43623
UI - Tesis Membership  Universitas Indonesia Library
cover
Sri Widawati
"The plant growth promoting rhizobacteria (PGPR) is a group of bacteria capable of colonizing plants roots, thereby developing a system and improving plants growth and yield. The objectives of the study is to characterize the PGPR activities of several bacterial isolates {in-vitro screening), to examine their activities in stimulating soybean growth (in-vivo screening), and to identify the bacterial species. These were isolated from nodules and soil samples collected from Mount Pancar in Bogor, West Java Province as well as from Bangkirai Hill and Wain River in East Kalimantan, Indonesia. The in-vitro PGPR activity characterization includes the N-fixing ability, ACC-deaminase, indole acetic acid (IAA) production, cellulolytic activity, P-solubilization, Phosphomonoesterase (PME-ase), and nifH-gene detection. The in-vivo PGPR activity with the greenhouse assay was conducted on soybean plant {Glycine max L.). All bacterial isolates were identified using molecular methods based on nucleotide sequence generated from 16S rRNA gene. Three isolates of soil and nodule bacteria with 7 characteristics of PGPR (N2 fixation, ACC-deaminase, cellulolytic activity, IAA production, solubilization index, P available, and PMEase activity) were successfully identified. These isolates were B045 {Klebsiella variicola InaCC B827), B116 (Klebsiella sp. InaCC B833), and B210 {Mangrovibacterplantisponsorlaa.CC B841). The greenhouse assay showed that the plant height, plant dry weight and number of flowers in soybean seedlings significantly increased with Bradyrhispbium sp. strain 4167, then with Klebsiella sp. InaCC B833 and Mangrovibacterplantisponsor InaCC B841. These bacterial isolates which were characterized and screened in-vitro for PGPR potentials and their representative isolates which were identified by 16S rRNA sequence analysis are key factors for selecting PGPR isolates to be commercialized later as bio-stimulant."
Bogor: Seameo Biotrop, 2020
634.6 BIO 27:3 (2020)
Artikel Jurnal  Universitas Indonesia Library
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