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Biofiltration of Nitrous Oxide Using Cow-Manure Based Compost as Medium Filter

¹ Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia
² Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia
³ Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia

Journal of Environmental Protection·Volume 03 (2012)·Pages 584–588·Published 18 July 2012·DOI10.4236/jep.2012.37070

Abstract

Nitrous oxide (N 2 O) gas is a fourth contributor in the greenhouse effect after CO 2 , CH 4 , 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 N 2 O 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 N 2 O removal efficiency is obtained under flow rate of 88 cm 3 /min with a depth of 50 cm and water content 50% (w/w) by 61%, and elimination capacity for 14078 g/(m 3 ·h) was achieved.

KeywordsBiofilterCompostCow-ManureNitrous OxideRemoval Efficiency

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Biofiltration of Nitrous Oxide Using Cow-Manure Based Compost as Medium Filter

Abstract

References (14)