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"Proses penyisihan senyawa fenol, COD dan 1,1,2,2-tetrakloroetana menggunakan teknik ozonasi katalitik dengan katalis Granular Activated Carbon (GAC) yang dikombinasikan dengan emisi sinar UV dilakukan dalam penelitian ini. Tujuan dari penelitian ini untuk memperoleh efektivitas aplikasi teknik ozonasi katalitik menggunakan sistem konfigurasi, yaitu: Ozon/GAC dan Ozon/UV/GAC dalam penyisihan limbah fenol, COD dan 1,1,2,2-tetrakloroetana dengan waktu sirkulasi (0, 15, 30, 45, 60, dan 120 menit). Limbah cair yang digunakan berasal dari limbah cair Laboratorium Industri Polyester di daerah Bogor.Analisis yang dilakukan meliputi analisis COD dengan metode FAS, analisis Fenol dengan menggunakan metode aminoantipirin dan analisis 1,1,2,2-tetrakloroetana dengan metode GC-FID. Setelah dilakukan penelitian, diketahui bahwa konfigurasi Ozon/UV/GAC dengan konsentrasi awal fenol 58,00 mg/L, COD 72,00 mg/L dan 1,1,2,2-tetrakloroetana 32,96 mg/L menghasilkan persentase penyisihan senyawa fenol 57,76%, COD 66,67% dan 1,1,2,2-tetrakloroetana 98,74% sedangkan konfigurasi Ozon/GAC dengan konsentrasi awal fenol 55,00 mg/L, COD 72,00 mg/L dan 1,1,2,2-tetrakloroetana 37,70 mg/L menghasilkan persentase penyisihan senyawa fenol 50,91%, COD 55,56% dan 1,1,2,2-tetrakloroetana 100%.

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Process eliminating compounds of phenol, COD and 1,1,2,2-tetrachloroethane using catalytic ozonation technique with catalyst Granular Activated Carbon (GAC) combination with UV light emission performed in this study. The purpose of this study was to obtain the effectiveness of applications catalytic ozonation technique using system configuration Ozone/GAC and Ozone/UV/GAC for eliminating in waste phenol, and 1,1,2,2-tetrachloroethane COD with circulation time (0, 15, 30, 45, 60, and 120 minutes). The wastewater was derived from wastewater Laboratory of Polyester Industrial in Bogor.

The results were analyzed which comprising of COD with FAS method, phenol using aminoantipirin method and 1,1,2,2-tetrachloroethane with GC-FID method. The result of study shown that the configuration of the Ozone/ UV/GAC with an initial concentration of phenol 58,00 mg/L, COD 72,00 mg/L and 1,1,2,2-tetrachloroethane 32,96 mg/L resulted in the percentage of eliminating phenol 57,76%, 66,67% COD and 1,1,2,2-tetrachloroethane 98,74% while the configuration of Ozone/GAC with an initial concentration of phenol 55,00 mg/L, COD 72,00 mg/L and 1,1,2,2-tetrachloroethane 37,70 mg/L resulted in percentage of eliminating phenol 50,91%, 55,56% COD and 1,1,2,2-tetrachloroethane 100%."

"ABSTRACTPenelitian ini menawarkan alternatif metode dalam penyisihan kandunganpencemar pada limbah cair rumah sakit dengan teknologi ozonasi katalitikmenggunakan Zeolit Alam Lampung (ZAL) jenis klinoptilolit yang dikombinasikandengan radiasi sinar UV. Penelitian ini dilakukan dengan memvariasikan waktupenyisihan (0, 15, 30, 60, dan 120 menit); dan sistem konfigurasi ozonasi dalampengolahan limbah cair, yaitu: ozon tunggal, Ozon-UV, Ozon-ZAL, Ozon-UV-ZAL.Analisis yang dilakukan meliputi analisis COD dengan metode FAS, analisis NH3-Ndengan metode Nessler, metode TPC untuk mengetahui jumlah Coliform, dan analisisantibiotik dengan menggunakan metode aminoantipirin. Hasil penelitianmenunjukkan bahwa konfigurasi Ozon-UV-ZAL sebagai konfigurasi yang terbaikdari semua konfigurasi yang dirancang dengan efisiensi penurunan COD, NH3-N,E.coli, Coliform, dan antibiotik masing-masing sebesar 50%; 28,74%; 100%;83,14%; dan 100%.

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ABSTRACTThis research attempts to proffer an alternative method to eliminate pollutantsfrom hospital wastewater through catalytic ozonation technology using combinationof ZAL and UV radiation. The research was conducted with various circulation oftime (0, 15, 30, 60, and 120 minutes); and system configuration of ozonation inwastewater treatment (Ozone, Ozone-UV, Ozone-ZAL, and Ozone-UV-ZAL). Theresults were analyzed which comprising of COD by FAS method, NH3-N by NesslerMethod, TPC method to determine the number of E.coli/coliform, andaminoantipyrine method to antibiotics (phenol derivatives). To sum up, this researchpointed out that the configuration of Ozone-UV-ZAL became the best configurationto treat the hospital wastewater with efficiency of removal reached: 50%; 28.74%;100%-83.14%; and 100%."

"Pada penelitian ini dilakukan studi kasus proses penyisihan fenol dalam limbah cair dengan teknik ozonasi katalitik menggunakan GAC dan ZAL dalam reaktor unggun diam berpemutar. Perbandingan efektivitas penggunaan katalis pada teknik ozonasi katalitik ditinjau dari kuantitas radikal hidroksil, persesntase penyisihan fenol, neraca massa ozon, perubahan pH, serta karakteristik dan kemampuan adsorpsi katalis.Hasil penelitian menunjukkan bahwa GAC lebih unggul dari ZAL dalam menyisihkan senyawa fenol di limbah cair, baik melalui proses adsorpsi tunggal maupun dengan teknik ozonasi katalitik. Pada kondisi operasi yang sama, GAC memiliki kemampuan adsorpsi fenol yang lebih baik (persentase penyisihan fenol 60,86% dengan tingkat adsorpsi 1,302 mg/g) dibandingkan dengan ZAL (persentase penyisihan fenol 15,47% dengan tingkat adsorpsi 0,287 mg/g). Dalam larutan limbah bersuasana basa (pH ≈ 10), kombinasi ozon dengan GAC mampu menyisihkan fenol sebesar 88,94% dibandingkan ozonasi katalitik menggunakan ZAL hanya mampu menyisihkan fenol sebesar 50,97%.

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In this research, a case study of elimination process of phenol compounds in waste water by catalytic ozonation using GAC and ZAL in rotating packed bed reactor was examined. The effectiveness comparison of catalysts which used in ozonation catalytic is evaluated from quantity of hydroxyl radicals, percentage of phenol degradation, the mass balance of ozone, pH changes, catalyst`s adsorption capacity, and the changes of catalyst characteristics.

The results showed that GAC is better than ZAL to eliminate phenol compounds in waste water, either through a single adsorption process as well as catalytic ozonation technique. At the same operating conditions, GAC has better ability for phenol adsorption (percentage of phenol degradation about 60,86% with the rate of adsorption up to 1,302 mg/g) compared to ZAL (percentage of phenol degradation about 15,47% with the rate of adsorption 0,287 mg/g). In waste water with alkali solution (pH ≈ 10), combination of ozone with GAC capable to remove phenol by 88,94%, compared to use catalytic ozonation using ZAL that only capable to remove phenol by 50,97%."

"[ABSTRAKPenelitian ini bertujuan untuk mengurangi polutan dalam perairan yang salah satunya disebabkan oleh limbah cair tekstil dengan menggunakan teknik ozonasi katalitik. Digunakan UV254nm dan katalis GAC (Granular Carbon Active) batok kelapa serta batu bara yang akan meningkatkan prosentase penyisihan fenol dan turunannya dalam limbah cair industri tekstil. Perlakuan terbaik untuk penggunaan GAC batok kelapa adalah konfigurasi ozon+GAC100+UV dengan prosentase penyisihan fenol sebesar 95,87%, TOC 29,49% (dari 50,53 mg/L menjadi 35,6 mg/L), dan penyisihan COD 59,46% sedangkan ozon+GAC100 lebih rendah dengan penyisihan fenol sebesar 78,07%, TOC 13,39%, dan COD 58,97%. Sedangkan perlakuan terbaik untuk penggunaan GAC batu bara adalah konfigurasi ozon+GACC50+UV dengan prosentase penyisihan fenol sebesar 88,56%, TOC 32,52% (dari 50,53 mg/L menjadi 34,1 mg/L), dan penyisihan COD 59,63% sedangkan ozon+GACC50 lebih rendah dengan penyisihan fenol sebesar 78,07%, TOC 19,06%, dan COD 57,89%.

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ABSTRACTThe research goal is decreasing water pollution using catalytic ozonation technique because of textile effluent. Adding UV254nm with GAC (Granular Carbon Active) coconut and charcoal in configuration will increase percentage phenol elimination and derivate in textile effluent which got sedimentation tank (active sludge treatment). The result for GAC coconut is ozon+GAC100+UV configuration with percentage phenol elimination 95,87%, TOC 29,49% (from 50,53 mg/L into 35,6 mg/L), and COD 59,46%. In other hand, ozon+GAC100 configuration lower than adding UV with percentage phenol elimination 78,07%, TOC 13,39%, and COD 58,97%. another GAC (charcoal) had a best result is ozon+GACC50+UV with percentage phenol elimination 88,56%, TOC 32,52% (from 50,53 mg/L into 34,1 mg/L), and COD 59,63%. In the fact, without adding UV, ozon+GACC50 has less percentage phenol elimination 78,07%, TOC 19,06%, dan COD 57,89%.;The research goal is decreasing water pollution using catalytic ozonation technique because of textile effluent. Adding UV254nm with GAC (Granular Carbon Active) coconut and charcoal in configuration will increase percentage phenol elimination and derivate in textile effluent which got sedimentation tank (active sludge treatment). The result for GAC coconut is ozon+GAC100+UV configuration with percentage phenol elimination 95,87%, TOC 29,49% (from 50,53 mg/L into 35,6 mg/L), and COD 59,46%. In other hand, ozon+GAC100 configuration lower than adding UV with percentage phenol elimination 78,07%, TOC 13,39%, and COD 58,97%. another GAC (charcoal) had a best result is ozon+GACC50+UV with percentage phenol elimination 88,56%, TOC 32,52% (from 50,53 mg/L into 34,1 mg/L), and COD 59,63%. In the fact, without adding UV, ozon+GACC50 has less percentage phenol elimination 78,07%, TOC 19,06%, dan COD 57,89%.;The research goal is decreasing water pollution using catalytic ozonation technique because of textile effluent. Adding UV254nm with GAC (Granular Carbon Active) coconut and charcoal in configuration will increase percentage phenol elimination and derivate in textile effluent which got sedimentation tank (active sludge treatment). The result for GAC coconut is ozon+GAC100+UV configuration with percentage phenol elimination 95,87%, TOC 29,49% (from 50,53 mg/L into 35,6 mg/L), and COD 59,46%. In other hand, ozon+GAC100 configuration lower than adding UV with percentage phenol elimination 78,07%, TOC 13,39%, and COD 58,97%. another GAC (charcoal) had a best result is ozon+GACC50+UV with percentage phenol elimination 88,56%, TOC 32,52% (from 50,53 mg/L into 34,1 mg/L), and COD 59,63%. In the fact, without adding UV, ozon+GACC50 has less percentage phenol elimination 78,07%, TOC 19,06%, dan COD 57,89%., The research goal is decreasing water pollution using catalytic ozonation technique because of textile effluent. Adding UV254nm with GAC (Granular Carbon Active) coconut and charcoal in configuration will increase percentage phenol elimination and derivate in textile effluent which got sedimentation tank (active sludge treatment). The result for GAC coconut is ozon+GAC100+UV configuration with percentage phenol elimination 95,87%, TOC 29,49% (from 50,53 mg/L into 35,6 mg/L), and COD 59,46%. In other hand, ozon+GAC100 configuration lower than adding UV with percentage phenol elimination 78,07%, TOC 13,39%, and COD 58,97%. another GAC (charcoal) had a best result is ozon+GACC50+UV with percentage phenol elimination 88,56%, TOC 32,52% (from 50,53 mg/L into 34,1 mg/L), and COD 59,63%. In the fact, without adding UV, ozon+GACC50 has less percentage phenol elimination 78,07%, TOC 19,06%, dan COD 57,89%.]"

"ABSTRAKLimbah tekstil akan terus meningkat seiring dengan semakin beragamnya produksi industri tekstil. Fenolik adalah salah satu kandungan dalam limbah tekstil yang dianggap dapat menyebabkan toksisitas akut dan efek karsinogenik, maka dari itu diperlukan pengolahan bagi limbah yang mengandung senyawa fenolik. Teknik ozonasi katalitik adalah metode yang efektif untuk pengolahan air limbah karena kemampuan katalis untuk menghasilkan radikal yang sangat reaktif dari dekomposisi ozon yang memaksimalkan degradasi fenol dalam limbah tekstil. Karbon aktif jenis granular digunakan sebagai katalis dalam penelitian ini karena kemampuan adsorpsinya yang baik. Penelitian ini bertujuan untuk membandingkan efektivitas teknik ozonasi katalitik dengan teknik ozonasi tunggal untuk proses degradasi senyawa fenolik 4-klorofenol dan fenol dalam reaktor kolom gelembung. Dari hasil penelitian, didapatkan bahwa dalam proses degradasi 60 menit dengan teknik ozonasi tunggal untuk 4-klorofenol dapat mencapai 62,79 dalam kondisi basa pH sekitar 10 . Keberadaan GAC granular activated carbon dalam teknik ozonisasi katalitik mampu meningkatkan degradasi 4-klorofenol menjadi 100 di bawah kondisi asam atau netral pH sekitar 5 atau 7 . Kondisi optimal diperoleh ketika menggunakan laju aliran udara 12 lpm, menggunakan sistem injeksi multi ozon, dan penggunaan laju alir air limbah 250 mL/menit

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ABSTRACTNaturally, textile waste and its complexity will grow significantly in tandem with the increasingly diverse production of the textile industry. Phenolic is one of the contents in textile wastewater that considered and treated as well as may cause acute toxicity and carcinogenic effectsCatalytic ozonation techniqueis an effective method of wastewater treatment, due to catalyst rsquo s ability to produce the highly reactive radicals from the decomposition of ozone which maximize the degradation of phenol in textile wastewater. Granular activated carbon is used as catalyst in this study due to its adsorption ability. This study aims to compare the effectiveness of catalytic ozonation technique with ozonation technique to degrade phenolic compounds 4 chlorophenol and phenol in bubble column reactor. From experiment result, it was found that in 60 minutes degradation process of 4 chlorophenol with single ozonation technique can reach 62.79 under basic condition pH about 10 . The existence of GAC granular activated carbon in catalytic ozonation technique was able to increase the degradation of 4 chlorophenol to 100 under acid or neutral conditions pH about 5 or 7 . The optimum condition of the degradation process was obtained by using air flow rate 12 LPM, using a multi ozone injection system, and the use of wastewater flow rate 250 mL min. "