期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Nitrous oxide gas removal by using compost-based biofilter medium
1
作者 Tania Surya UTAMI heri hermansyah +1 位作者 Josia SIMANJUNTAK M.NASIKIN 《安全与环境学报》 CAS CSCD 北大核心 2010年第5期61-64,共4页
This paper is aimed at introducing our research result in the efficiencyin removing nitrous oxide gas (N_2O) by using compost as a medium filter,which is actually a kind of manure derived from cow faeces at KukusanKel... This paper is aimed at introducing our research result in the efficiencyin removing nitrous oxide gas (N_2O) by using compost as a medium filter,which is actually a kind of manure derived from cow faeces at KukusanKelurahan farm conlaing wood chips and some other microorganisms. Practicallyspeaking, N_2O is a major greenhouse gas, whose continuous presence in theatmosphere is expected to last over a 100 years and produce its radiative warmingeffect just next to CO_2. In spite of its rather small concentration in the atmosphere,it is the Number Four largest greenhouse gas contributor to the overallglobal warming, behind carbon dioxide, methane and water vapour. Thebiofiltration experiments we have conducted to explore its removing rate of N_2Ofrom flue gas help us to find various operating factors in the biofilter system. Sofar as we know, N_2O gas has been fed from the top of the column. It was flowingthrough the column when it is made to get circulated with a peristaltic pumpfor 6 hours. The data obtained in our paper prove to be in conformity with theLangmuir adsorption model. The highest N_2O gas removing efficiency can bemade to be as high as 70.22% at the highest biofilter length of 50 cm with thegas flowing rate of 200 mL/min. The results of this research have finally beenmodeled by the Langmuir adsorption isotherm formula with its K value obtainedbeing 16.949 L/mol. 展开更多
关键词 摘要 编辑部 编辑工作 读者
下载PDF
Isolation and Properties Characterization of Biosurfactant Synthesized by Pyrene Degrading Bacillus subtilis C19
2
作者 Anondho Wijanarko Hanif Yuliani +1 位作者 heri hermansyah Muhamad Sahlan 《Journal of Chemistry and Chemical Engineering》 2012年第10期889-896,共8页
Bacillus subtilis strain C19, capable of ulilizing pyrene as a sole of carbon and energy, was isolated from marine Indonesian Archipelago. In biodegradation of pyrene by B. subtilis C19, various metabolites was isolat... Bacillus subtilis strain C19, capable of ulilizing pyrene as a sole of carbon and energy, was isolated from marine Indonesian Archipelago. In biodegradation of pyrene by B. subtilis C19, various metabolites was isolated and identified by chromatographic and spectral analyses. Lipopeptide biosurfactant was produced and it has stable emulsification activity. Biosurfactant was produced for enhancing pyrene uptake and bioavaibility. After 30 days incubation, there were no toxic metabolite and biodegradation of pyrene was already complete (only 0.02% undegradable metabolite). Therefore, this strain is suitable for PAHs (polyaromatic hydrocarbons) contaminated environment recovery. 展开更多
关键词 BIOEMULSIFIER Bacillus subtilis PYRENE BIODEGRADATION characterization.
下载PDF
Biofiltration of Nitrous Oxide Using Cow-Manure Based Compost as Medium Filter
3
作者 Tania Surya Utami heri hermansyah Mohamad Nasikin 《Journal of Environmental Protection》 2012年第7期584-588,共5页
Nitrous oxide (N2O) gas is a fourth contributor in the greenhouse effect after CO2, CH4, and water vapor. Although its concentration is relatively low, but very difficult to be decomposed in the atmosphere. A laborato... Nitrous oxide (N2O) gas is a fourth contributor in the greenhouse effect after CO2, CH4, and water vapor. Although its concentration is relatively low, but very difficult to be decomposed in the atmosphere. A laboratory-scale biofilter was used to evaluate the effects of flow rate, medium depth, and water content of filter medium on the N2O removal efficiency and the growth of microorganisms in the compost. The biofilter was operated using cow-manure based compost medium with husk and coco peat as bulking agent. Research was carried out by batch flow system for 9 hours. The result indicates that the highest N2O removal efficiency is obtained under flow rate of 88 cm3/min with a depth of 50 cm and water content 50% (w/w) by 61%, and elimination capacity for 14078 g/(m3·h) was achieved. 展开更多
关键词 BIOFILTER COMPOST Cow-Manure Nitrous OXIDE Removal Efficiency
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部