Anaerobic retting of banana and arecanut wastes in a plug flow digester for recovery of fiber, biogas and compost
- 作者：Hoysall N. Chanakya ; chanakya@astra.iisc.ernet.in ; Malayil Sreesha
- 关键词：Banana leaf fiber ; Areca-husk fiber ; Biogas ; Anaerobic digestion ; Plug flow digester
- 刊名：Energy for Sustainable Development
- 出版年：2012
- 期刊代码：P135_09730826
- 类别：pw
- 出版时间：June, 2012
- 卷：16
- 期：2
- 页码：231-235
- 文件大小：700 K
摘要
Leaves and leaf sheath of banana and areca husk (Areca catechu) constitute an important component of urban solid waste (USW) in India which are difficult to degrade under normal windrow composting conditions. A successful method of anaerobic digestion built around the fermentation properties of these feedstock has been evolved which uses no moving parts, pretreatment or energy input while enabling recovery of four products: fiber, biogas, compost and pest repellent. An SRT of 27 d and 35 d was found to be optimum for fiber recovery for banana leaf and areca husk, respectively. Banana leaf showed a degradation pattern different from other leaves with slow pectin-1 degradation (80%) and 40%lignin removal in 27 d SRT. Areca husk however, showed a degradation pattern similar to other plant biomass. Mass recovery levels for banana leaf were fiber鈥?0%, biogas鈥?0%(400 ml/g TS) and compost鈥?0%. For areca husk recovery was fiber鈥?0%, biogas鈥?5%(250 ml/g TS) and compost鈥?%.