Ditemukan 5 dokumen yang sesuai dengan query
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In order to review the structure and characteristic of pressure sensitive label (PSL), the examination of 32 PSL smples has been carried out. The results of visual examination show that PSL is a laminate, consist of label paper layering by adhesive and coated release-paper. The test results showed that the basis weight of PSL is 171.3 - 220.7 g/m2 with the caliper of 0.1680 - 0.2348 mm. The basis weight is correlated well with caliper ...
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Artikel Jurnal Universitas Indonesia Library
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Treatment of pulp bleaching effluent using Upflow Anaerobic Sludge Blanket (UASB) and Suspended Carrier Biofilm (SCB) systems have been carried out. Upflow Anaerobic Sludge Blanket (UASB) and Suspended Carrier Biofilm (SCB) reactors were run on the Hydraulic. Retention Time (HRT) of 12 hours, respectively. Micronutrient solution containing some traces elements was added into feed wastewater of UASB reactor to accelerate the growth of granular sludge. Sludge characteristics of UASB and activeted sludge reactors were observed ...
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Artikel Jurnal Universitas Indonesia Library
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Utilization of paper mill sludge from waste treatment plnt for compost have been proven able to improve the quality of land and crop productivity and also uncontaminate the environment. But to produce the compost on a large scale, industry still not yet implemented it because composting process can take time uo to 3 month. Composting of paper mill sludge by fungi Phanerochaeta chrysosporium, Trichoderma harzianum ad Trichoderma reesei have been done atLaboratory scale. The results ...
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Artikel Jurnal Universitas Indonesia Library
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Oil spill can contaminate the environment as a consequence of activities related to crude oil exploration, oil refinary, transporation, pipeline leaking, and industrial processes. This researchrelated with the characteristics of coir dust as oil sorbent material to remove oil from water. Hydrophobicity is an important parameter that determines the effectiveness of the oil sorbent. Some treatment were done in this research to increase the hydrophobicity of choir dust. Moreover, these treatments were expected to improve ...
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Artikel Jurnal Universitas Indonesia Library
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In this experiment, xylanase was used prior to bleaching. The dosages of xylanase are 0.25; 0,5; 0,75; 1;1,25 kg/ton of chips. The pulps after pretreatment were tested and treated with D0ED1D2 bleaching sequences. The result shoew that xylanase can decreasekappa number as much as 10.33-11.45. The optinum kappa number (10.33) was obtaidned by addition xylanase 0.75 kg/ton of chips. Xylanase also increases increase bleachability of pulp and decrease dirt on pulp, from initial brightness 82.4 ...
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Artikel Jurnal Universitas Indonesia Library
