期刊
RENEWABLE ENERGY
卷 132, 期 -, 页码 1301-1309出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2018.09.030
关键词
Biogas production; Effect; Food waste; Paper waste; Paper waste ratio; Two-stage thermophilic anaerobic co-digestion
资金
- Japan Science and Technology UST) (Japanese-Chinese Research Cooperative Program on Research and Development) [16769220A]
- Major Science and Technology Program for Water Pollution Control and Treatment of China [2017ZX07106003]
The effects of paper waste (PW) ratio on biogas production by two-stage thermophilic anaerobic co-digestion (coAD) of food waste (FW) and PW, two main components of organic fraction of municipal solid waste, were evaluated in lab-scale continuously stirred tank systems with semi-continuous feeding. Four PW ratios (0, 20, 40, and 50%) were studied in the test. The experimental results showed the two stage thermophilic coAD could operate stably after an adjustment period at all PW ratios. Although the increase of PW ratio decreased methane content, production and yield, reaction rates of four AD steps, it could increase the methane production of substrate when the FW was fixed. The pH, total volatile fatty acids, total alkalinity, and total ammonium of the sludge in the second stage of AD, also decreased with the increase of PW ratio in the test. The change of the substrate's organic composition, increase of carbohydrate and decrease of protein and lipid, were the main reason for the decrease of methane content, production and yield and changes of the second stage sludge characteristics. An apposite PW ratio (PW-20%) could enhance the degradation of matters (TS, VS and TCOD). (C) 2018 Elsevier Ltd. All rights reserved.
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