Integration of high-solid digestion and gasification to dispose horticultural waste and chicken manure

Wangliang Li; Changbo Lu; Gaojun An; Yuming Zhang; Yen Wah Tong

doi:10.1016/j.cjche.2017.09.020

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Integration of high-solid digestion and gasification to dispose horticultural waste and chicken manure

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Integration of high-solid digestion and gasification to dispose horticultural waste and chicken manure
- Chinese Journal of Chemical Engineering Vol. 26, Issue 5, Pages: 1145-1151(2018)
- Affiliations：
  
  1. 2 Beijing POL Research Institute,Beijing,China,102300
  2. 3 State Key Laboratory of Heavy Oil Processing, China University of Petroleum(Beijing),Beijing,China,102249
  3. 4 NUS Environment Research Institute, National University of Singapore,Singapore,Singapore,117411
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.09.020
  CLC：
- Published：2018
- Accepted：
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Wangliang Li, Changbo Lu, Gaojun An, Yuming Zhang, Yen Wah Tong. Integration of high-solid digestion and gasification to dispose horticultural waste and chicken manure[J]. Chin.J.Chem.Eng., 2018, 26(5): 1145-1151.
DOI：

Wangliang Li, Changbo Lu, Gaojun An, Yuming Zhang, Yen Wah Tong. Integration of high-solid digestion and gasification to dispose horticultural waste and chicken manure[J]. Chin.J.Chem.Eng., 2018, 26(5): 1145-1151. DOI： 10.1016/j.cjche.2017.09.020.

摘要

Abstract

To realize full energy recovery from grass and chicken manure (CM)

the integration of high-solid anaerobic digestion (HSAD) and gasification was investigated experimentally. The anaerobic biodegradability of grass can be enhanced through codigestion with CM. When the volatile solid (VS) ratio of CM to grass was 20:80

C/N ratio calculated to be 21.70

the cumulative biogas yield was the highest

237 ml·(g VS)

-1

. The enhancement of biogas production was attributed to the buffering effects of ammonia and rich trace elements in CM. In semi-continuous systems

when the organic loading rate was 4.0 g VS·L

-1

·d

-1

the HSAD process was stable

with the average biogas yield 168 ml·(g VS)

-1

. More than 80% fractions of the digestates were volatile matters

which meant that the digestates can be used as feedstock for gasification to produce syngas. The VS ratio of grass to CM had significant overall energy generation through HSAD and gasification. Compared with gasification of digestate

cogasification with woodchips increased syngas yield and low heat value (LHV). Increasing of mass ratio of digestates to woodchips led to the dec

rease of LHV.

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