Investigation of anaerobic biodegradability of real compost leachate emphasis on biogas harvesting

Hashemi, H. and Ebrahimi, A. and Khodabakhshi, A. (2015) Investigation of anaerobic biodegradability of real compost leachate emphasis on biogas harvesting. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, 12 (9). pp. 2841-2846.

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Abstract

Anaerobic treatability of real compost leachate was assessed using laboratory-scale anaerobic sequencing batch reactor at mesophilic conditions. Interventional study was conducted at wide range of organic loading rate 0.93-25 g l(-1) day(-1) by varying hydraulic retention times 23 and 12 h. Initial chemical oxygen demand (COD) was 1.85-25 g l(-1). pH variations; total, soluble (SCOD), readily biodegradable (rbCOD) chemical oxygen demand; volatile fatty acids degradation; biogas production; and methane fraction were considered in this study. The organic matter removal efficiencies were in the range of 76-81 % depending on loading rates applied. The maximum volumetric methane production rate of 5.7 l CH4 l(-1) day(-1) was achieved at the loading rate of 19.65 g l(-1) day(-1). About 85 % of removed organic matters during the biodegradation were converted to the methane. The results have shown that the anaerobic batch reactor could be an appealing option for changing compost leachate into the useable products such as biogas and other energy-rich compounds, which may play a serious role in meeting the world's ever-increasing energy requirements in the future.

Item Type: Article
Uncontrolled Keywords: Batch process; Compost liquid; Methane; Organic load
Subjects: WA Public Health > Public Health Education WA.18 > WA 30 Social, Economic, and Environmental factor in public health
WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
Divisions: Faculty of Health > Department of Environmental Health
Depositing User: zahra bagheri .
Date Deposited: 19 Jul 2017 09:04
Last Modified: 19 Jul 2017 09:04
URI: http://eprints.skums.ac.ir/id/eprint/1600

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