稻壳与玉米秆高温厌氧发酵制备生物燃气潜力研究

施晨璐; 李连华; 孙永明

doi:10.3969/j.issn.2095-560X.2014.04.004

新能源进展 >

2014 , Vol. 2 >Issue 4: 264 - 269

DOI: https://doi.org/10.3969/j.issn.2095-560X.2014.04.004

论文

稻壳与玉米秆高温厌氧发酵制备生物燃气潜力研究

施晨璐 ,
李连华 ,
孙永明

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1. 广东省生态环境与土壤研究所，广州 510650；
2. 中国科学院广州能源研究所，中国科学院可再生能源重点实验室，广州 510640

施晨璐（1977-），女，硕士，主要从事农业环境污染修复工程研究。

收稿日期: 2014-08-18

修回日期: 2014-08-20

网络出版日期: 2014-08-30

基金资助

国家863计划（2012AA101803）

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Thermophilic Anaerobic Digestion Performance of Rice Husk and Corn Stalk

SHI Chen-lu ,
LI Lian-hua ,
SUN Yong-ming

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1. Guangdong Institute of Eco-environmental and Soil Sciences, Guangzhou 510650, China;
2. CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China

Received date: 2014-08-18

Revised date: 2014-08-20

Online published: 2014-08-30

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摘要

研究了玉米秆和稻壳在固体浓度为6%时的高温（50℃）发酵性能，并分析了发酵过程中氨氮浓度、碱度及挥发性脂肪酸等参数的变化情况。结果表明，玉米秆和稻壳的挥发性物质产甲烷率接近，分别为（157.67 ± 3.00）mL/g VS和（155.83 ± 6.25）mL/g VS，挥发性物质去除率分别为（53.38 ± 0.81）% 和（42.67 ± 0.3）%。但稻壳相比于玉米秆无需粉碎，降低了输入能耗。发酵过程中氨氮浓度及挥发性脂肪酸数值低于抑制浓度，且碱度对发酵系统酸浓度变化具有很好的缓冲能力，可见玉米秆和稻壳适宜作为沼气工程的原料，并可在6%的固体浓度及高温条件下稳定发酵。

关键词： 厌氧发酵; 稻壳; 玉米秆; 高温

本文引用格式

施晨璐 , 李连华 , 孙永明 . 稻壳与玉米秆高温厌氧发酵制备生物燃气潜力研究[J]. 新能源进展, 2014 , 2(4) : 264 -269 . DOI: 10.3969/j.issn.2095-560X.2014.04.004

Abstract

The anaerobic digestion performance of corn stalk and rice husk was studied at solids concentration of 6% and high-temperature (50oC), and process parameters such as the concentration of ammonia, alkalinity and volatile fatty acids were analyzed. The results showed that specific methane yields of corn stalk and rice husk were (157.67 ± 3.00) mL/g VS and (155.83 ± 6.25) mL/g VS, the removal rate of volatile solid were (53.38 ± 0.81)% and (42.67 ± 0.3)%, respectively. However, compared to the corn stalk, rice husk needs less input energy. The concentrations of ammonia and volatile fatty acid below the inhibitory concentration, and the alkalinity has good buffering capacity for the change of acid concentration. So corn stalk and rice husk are suitable as raw material for biogas plant, which are stable at high temperature and solids concentration of 6%.

Key words： anaerobic fermentation; rice husk; corn stalk; thermophilic

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