Improving physicochemical characteristics and anaerobic digestion performance of rice straw <i>via</i> ammonia pretreatment at varying concentrations and moisture levels

Hairong Yuan; Ruolin Guan; Akiber Chufo Wachemo; Yatian Zhang; Xiaoyu Zuo; Xiujin Li

doi:10.1016/j.cjche.2019.07.009

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Improving physicochemical characteristics and anaerobic digestion performance of rice straw via ammonia pretreatment at varying concentrations and moisture levels

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

- Improving physicochemical characteristics and anaerobic digestion performance of rice straw via ammonia pretreatment at varying concentrations and moisture levels
- Improving physicochemical characteristics and anaerobic digestion performance of rice straw via ammonia pretreatment at varying concentrations and moisture levels
- 中国化学工程学报（英文版） 2020年28卷第2期页码：541-547
- Affiliations：
  
  1. Centre for Resource and Environmental Research, Beijing University of Chemical Technology, No 15 Beisanhuan East Road, Chaoyang District,Beijing,China,100029
  2. Department of Water Supply and Environmental Engineering, Arba Minch University, P.O. Box 21, Arba Minch,Ethiopia
  3. Capital Aerospace Machinery Company,Beijing,China,100076
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.07.009
  中图分类号：
- 纸质出版：2020
- Accepted：
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Hairong Yuan, Ruolin Guan, Akiber Chufo Wachemo, 等. Improving physicochemical characteristics and anaerobic digestion performance of rice straw via ammonia pretreatment at varying concentrations and moisture levels[J]. 中国化学工程学报（英文版）, 2020,28(2):541-547. DOI: 10.1016/j.cjche.2019.07.009.

ammonia pretreatment at varying concentrations and moisture levels[J]. 中国化学工程学报, 2020, 28(2): 541-547.
Hairong Yuan, Ruolin Guan, Akiber Chufo Wachemo, 等. Improving physicochemical characteristics and anaerobic digestion performance of rice straw via ammonia pretreatment at varying concentrations and moisture levels[J]. 中国化学工程学报（英文版）, 2020,28(2):541-547. DOI: 10.1016/j.cjche.2019.07.009. DOI：

ammonia pretreatment at varying concentrations and moisture levels[J]. 中国化学工程学报, 2020, 28(2): 541-547. DOI： 10.1016/j.cjche.2019.07.009.

摘要

Abstract

Rice straw physicochemical characteristics and anaerobic digestion (AD) performance

via

ammonia pretreatment at varying ammonia concentrations (2%

and 6%) and moisture contents (30%

50%

70%

and 90%) under a mild condition were investigated. The results showed that the ammonia pretreatment effectively damaged the rice straw structure

increased the soluble organic concentration

and improved rice straw hydrolysis and AD performance. After pretreatment

the ester bond and ether bond were ruptured in lignocellulose and the volatile fatty acids (VFAs) were within the range of 1457.81-1823.67 mg·L

-1

. In addition

ammonia pretreatment had high selectivity on lignin removal

resulting in a maximum lignin removal rate of 50.80%. The highest methane yield of rice straw was 250.34 ml·(g VS)

-1

at a 4% ammonia concentration coupled with a 70% moisture content

which was 28.55% higher than that of the control. The result showed that ammonia pretreatment of rice straw is technically suitable to enhance AD performance for further application.

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Improving physicochemical characteristics and anaerobic digestion performance of rice straw via ammonia pretreatment at varying concentrations and moisture levels

Improving physicochemical characteristics and anaerobic digestion performance of rice straw via ammonia pretreatment at varying concentrations and moisture levels

DOI：10.1016/j.cjche.2019.07.009

摘要

Abstract

关键词

Keywords

references