基于不同时间碱液预处理条件下厌氧发酵物料的转化
|
摘要
碱液预处理法操作简便、木质素去除效果显著,是目前较为常用和有效的秸秆预处理方法。研究以玉米秸秆为原料,采用较低浓度碱液(1. 2%)预处理,分别测量预处理2 d、4 d、6 d、8 d、10 d后的原料中纤维素、半纤维素和木质素的变化水平;选择COD、产甲烷率、产气率等指标对比分析不同预处理时间对于发酵产气率的影响及物料平衡情况,为探求预处理和厌氧发酵过程中物料转化原理、碱液成分分析以及碱液回收利用等研究方向提供参考依据。结果表明,预处理2 d的条件下,破坏木质素纤维结构所析出的半纤维素占比最高为11. 93%,半纤维素得到最大程度解离是高产气率的重要原因之一;同时该条件下COD浓度最高达到17. 93 g/L,秸秆损耗率最低,仅占15. 24%。厌氧发酵实验中,预处理2 d后的原料产气率最高为49. 43%,能够满足在高产气率的前提下,实现缩短预处理时间和提高产气效率的双重效果。
The alkaline pretreatment method is easy to operate and has remarkable removal efficiency of lignin.It is a common and effective pretreatment method of straw,nowadays. Corn straw was pretreated with low concentration of alkaline solution( 1. 2%) to measure the change of cellulose,hemicellulose and lignin in the raw materials after pretreatment for 2,4,6,8 and 10 d,respectively. The influence of different pretreatment time on fermentation gas production rate and material balance were compared and analyzed by the change of COD,methane production rate and gas production rate. Reference for exploring material transformation principle was provided in anaerobic fermentation process,the alkaline component and the recovery and utilization of alkaline after pretreatment were analyzed. The results showed that the highest proportion of hemicellulose was 11. 93% after pretreatment for2 d. The maximum dissociation of hemicellulose was an important reason for high gas production rate. The highest COD concentration was up to 17. 93 g/L and the lowest straw loss rate was only 15. 24% in the same time. In the experiment of anaerobic fermentation,the highest gas production rate of raw material after pretreatment for 2 d is49. 43%,which own dual effects of shortening pretreatment time and improving gas production efficiency under the premise of high gas production.
The alkaline pretreatment method is easy to operate and has remarkable removal efficiency of lignin.It is a common and effective pretreatment method of straw,nowadays. Corn straw was pretreated with low concentration of alkaline solution( 1. 2%) to measure the change of cellulose,hemicellulose and lignin in the raw materials after pretreatment for 2,4,6,8 and 10 d,respectively. The influence of different pretreatment time on fermentation gas production rate and material balance were compared and analyzed by the change of COD,methane production rate and gas production rate. Reference for exploring material transformation principle was provided in anaerobic fermentation process,the alkaline component and the recovery and utilization of alkaline after pretreatment were analyzed. The results showed that the highest proportion of hemicellulose was 11. 93% after pretreatment for2 d. The maximum dissociation of hemicellulose was an important reason for high gas production rate. The highest COD concentration was up to 17. 93 g/L and the lowest straw loss rate was only 15. 24% in the same time. In the experiment of anaerobic fermentation,the highest gas production rate of raw material after pretreatment for 2 d is49. 43%,which own dual effects of shortening pretreatment time and improving gas production efficiency under the premise of high gas production.
引文
1王悦,张润,刘莎.猪粪和玉米秸秆的不同配方比对厌氧发酵产沼气的影响[J].现代农村科技,2018(3):69-72Wang Yue,Zhang Run,Liu Sha.Effect of different formulations of pig manure and corn straw on biogas production by anaerobic fermentation[J].Modern Rural Technology,2018(3):69-72
2韩沐昕,谭羽非,刘欢鹏,等.玉米秸秆稀酸-蒸汽爆破预处理和水解糖化的试验研究[J].科学技术与工程,2014,14(10):290-294Han Muxin,Tan Yufei,Liu Huanpeng,et al.Enzymatic hydrolysis of corn stalk by dilute acid-steam explosion[J].Science Technology and Engineering,2014,14(10):290-294
3 Elsayed M,Abomohra A E,Ai Ping,et al.Biorefining of rice straw by sequential fermentation and anaerobic digestionfor bioethanol and or biomethane production:Comparison of structuralproperties and energy output[J].Bioresource Technology,2018,268:183-189
4陆文龙,赵标,郭景海.秸秆不同处理方式对土壤氮磷吸附特性的影响[J].科学技术与工程,2017,17(2):126-129Lu Wenlong,Zhao Biao,Guo Jinghai.Effects of different treatments on soil nitrogen and phosphorus adsorption characteristics[J].Science Technology and Engineering,2017,17(2):126-129
5龚万涛,何瑞银,马建永,等.秸秆还田条件下不同种植方式对土壤养分的影响[J].科学技术与工程,2012,12(8):1737-1739Gong Wantao,He Ruiyin,Ma Jianyong,et al.Effects of different plant methods with straw retained on soil nutrients[J].Science Technology and Engineering,2012,12(8):1737-1739
6 Weiland P.Anaerobic waste digestion in Germany-Status and recent developments[J].Biodegradation,2000,11(6):415-421
7张鸣,刘芳,刘畅,等.不同碱液处理对玉米秸秆中温发酵产气的影响[J].环境科学与技术,2018(5):6-10Zhang Ming,Liu Fang,Liu Chang,et al.Effects of different alkaline pretreatment on biogas production of corn straw under mesophilic anaerobic fermentation[J].Environmental Science and Technology,2018(5):6-10
8 Sepp l M,Paavola T,Lehtomki A,et al.Biogas from energy crops-optimal pretreatments and storage,codigestion and energy balance in boreal conditions[J].Water Science and Technology,2008,58(9):1857-1863
9郑万里.热碱预处理对秸秆厌氧发酵的影响[D].北京:中国农业大学,2004Zheng Wanli.Effect of thermo-alkaline pretreatment on anaerobic digestion of straw[D].Beijing:China Agricultural University,2004
10杨立,张婷,龚乃超,等.稀碱法预处理对秸秆厌氧发酵产气的影响研究[J].安徽农业科学,2011,39(15):9165-9166Yang Li,Zhang Ting,Gong Naichao,et al.Effect of alkali pretreatment on the biogas production in the anaerobic fermentation of stalk[J].Journal of Anhui Agricultural Sciences,2011,39(15):9165-9166
11艾平,张衍林,盛凯,等.稻秸厌氧发酵产沼气预处理[J].农业工程学报,2010,26(7):266-271Ai Ping,Zhang Yanling,Sheng Kai,et al.Pretreatment for biogas production by anaerobic fermentation of rice straw[J].Transactions of the Chinese Society of Agricultural Engineering,2010,26(7):266-271
12郑明霞,李来庆,郑明月,等.碱处理对玉米秸秆纤维素结构的影响[J].环境科学与技术,2012,35(6):32-36Zheng Mingxia,Li Laiqing,Zheng Mingyue,et al.Effect of alkali pretreatment on cellulosic structural changes of corn stover[J].Environmental Science&Technology,2012,35(6):32-36
13陈广银,郑正,罗艳,等.碱处理对秸秆厌氧消化的影响[J].环境科学,2010,31(9):2208-2213Chen Guangyin,Zheng Zheng,Luo Yan,et al.Effect of alkaline treatment on anaerobic digestion of rice straw[J].Journal of Environmental Sciences,2010,31(9):2208-2213
14袁志慧,尤朝阳,王磊,等.中温NaOH预处理对玉米秸秆发酵产沼气的影响[J].江苏农业科学,2016,44(6):506-510Yuan Zhihui,You Chaoyang,Wang Lei,et al.Effect of medium temperature NaOH pretreatment on biogas production from corn straw fermentation[J].Jiangsu Agricultural Sciences,2016,44(6):506-510
15李平,龙翰威,高立洪,等.不同预处理方式下水稻秸秆厌氧消化性能比较[J].农业工程学报,2015,31(12):200-204Li Ping,Long Hanwei,Gao Lihong,et al.Comparison of anaerobic digestion capability of rice straw with different pretreatment methods[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(12):200-204
16李赫龙.作物秸秆木质素和半纤维素的分离纯化及结构表征[D].杨凌:西北农林科技大学,2016Li Helong.Isolation and structure characteriation of lignin and hemicelluloses form crop straw[D].Yangling:Northwest A&F University,2016
17周富春.基于VS的有机固体废物厌氧消化的趋势分析[J].环境科学与技术,2009,32(6):121-122Zhou Fuchun.Trendency ananlysis on anaerobic digestion of organic solid waste with VS[J].Environmental Science&Technology,2009,32(6):121-122
18夏挺.高固浓度玉米秸秆厌氧发酵产酸特性及其对产沼气的影响[D].沈阳:沈阳农业大学,2017Xia Ting.Effect of volatile acid on the characteristics of solid state anaerobic fermentation of corn stalk[D].Shenyang:Shenyang Agricultural University,2017
19李连华,马隆龙,袁振宏,等.农作物秸秆的厌氧消化试验研究[J].农业环境科学学报,2007,26(1):335-338Li Lianhua,Ma Longlong,Yuan Zhenhong,et al.Study on anaerobic digestion of straw stalk[J].Journal of Agro-envrionment Science,2007,26(1):335-338
20孙辰,刘荣厚,曹卫星.猪粪和水牛粪厌氧消化产甲烷潜力的研究[J].中国沼气,2014,32(1):49-52Sun Chen,Liu Ronghou,Cao Weixing.Methane production potential of pig manure and buffalo manure[J].China Biogas,2014,32(1):49-52
21 Buswell A M,Mueller H F.Mechanism of methane fermentation[J].Journal of the American Chemical Society,1948,70(3):550-552
22张鸣,赵国虎,李万江,等.不同时间NaOH预处理对玉米秸秆中温厌氧发酵的影响[J].生态环境学报,2017,26(9):1605-1611Zhang Ming,Zhao Guohu,Li Wanjiang,et al.Effects of NaOH pretreatment at different time on anaerobic fermentation of corn straw at mesophilic temperatures[J].Ecology and Environmental Sciences,2017,26(9):1605-1611
23李平,蒋滔,李萍,等.不同预处理方式对玉米秸秆产气效果的影响[J].西南农业学报,2014,27(5):2187-2194Li Ping,Jiang Tao,Li Ping,et al.Effects of different pretreatment methods on anaerobic digestion of corn straw for biogas production[J].Southwest China Journal of Agricultural Sciences,2014,27(5):2187-2194
24张彬,蒋滔,高立洪,等.猪粪与玉米秸秆混合中温发酵产气效果[J].环境工程学报,2014,8(11):4991-4997Zhang Bin,Jiang Tao,Gao Lihong,et al.Aerogenesis characteristics of swine feces mixed with corn straw under mesophilic fermentation[J].Chinese Journal of Environmental Engineering,2014,8(11):4991-4997
2韩沐昕,谭羽非,刘欢鹏,等.玉米秸秆稀酸-蒸汽爆破预处理和水解糖化的试验研究[J].科学技术与工程,2014,14(10):290-294Han Muxin,Tan Yufei,Liu Huanpeng,et al.Enzymatic hydrolysis of corn stalk by dilute acid-steam explosion[J].Science Technology and Engineering,2014,14(10):290-294
3 Elsayed M,Abomohra A E,Ai Ping,et al.Biorefining of rice straw by sequential fermentation and anaerobic digestionfor bioethanol and or biomethane production:Comparison of structuralproperties and energy output[J].Bioresource Technology,2018,268:183-189
4陆文龙,赵标,郭景海.秸秆不同处理方式对土壤氮磷吸附特性的影响[J].科学技术与工程,2017,17(2):126-129Lu Wenlong,Zhao Biao,Guo Jinghai.Effects of different treatments on soil nitrogen and phosphorus adsorption characteristics[J].Science Technology and Engineering,2017,17(2):126-129
5龚万涛,何瑞银,马建永,等.秸秆还田条件下不同种植方式对土壤养分的影响[J].科学技术与工程,2012,12(8):1737-1739Gong Wantao,He Ruiyin,Ma Jianyong,et al.Effects of different plant methods with straw retained on soil nutrients[J].Science Technology and Engineering,2012,12(8):1737-1739
6 Weiland P.Anaerobic waste digestion in Germany-Status and recent developments[J].Biodegradation,2000,11(6):415-421
7张鸣,刘芳,刘畅,等.不同碱液处理对玉米秸秆中温发酵产气的影响[J].环境科学与技术,2018(5):6-10Zhang Ming,Liu Fang,Liu Chang,et al.Effects of different alkaline pretreatment on biogas production of corn straw under mesophilic anaerobic fermentation[J].Environmental Science and Technology,2018(5):6-10
8 Sepp l M,Paavola T,Lehtomki A,et al.Biogas from energy crops-optimal pretreatments and storage,codigestion and energy balance in boreal conditions[J].Water Science and Technology,2008,58(9):1857-1863
9郑万里.热碱预处理对秸秆厌氧发酵的影响[D].北京:中国农业大学,2004Zheng Wanli.Effect of thermo-alkaline pretreatment on anaerobic digestion of straw[D].Beijing:China Agricultural University,2004
10杨立,张婷,龚乃超,等.稀碱法预处理对秸秆厌氧发酵产气的影响研究[J].安徽农业科学,2011,39(15):9165-9166Yang Li,Zhang Ting,Gong Naichao,et al.Effect of alkali pretreatment on the biogas production in the anaerobic fermentation of stalk[J].Journal of Anhui Agricultural Sciences,2011,39(15):9165-9166
11艾平,张衍林,盛凯,等.稻秸厌氧发酵产沼气预处理[J].农业工程学报,2010,26(7):266-271Ai Ping,Zhang Yanling,Sheng Kai,et al.Pretreatment for biogas production by anaerobic fermentation of rice straw[J].Transactions of the Chinese Society of Agricultural Engineering,2010,26(7):266-271
12郑明霞,李来庆,郑明月,等.碱处理对玉米秸秆纤维素结构的影响[J].环境科学与技术,2012,35(6):32-36Zheng Mingxia,Li Laiqing,Zheng Mingyue,et al.Effect of alkali pretreatment on cellulosic structural changes of corn stover[J].Environmental Science&Technology,2012,35(6):32-36
13陈广银,郑正,罗艳,等.碱处理对秸秆厌氧消化的影响[J].环境科学,2010,31(9):2208-2213Chen Guangyin,Zheng Zheng,Luo Yan,et al.Effect of alkaline treatment on anaerobic digestion of rice straw[J].Journal of Environmental Sciences,2010,31(9):2208-2213
14袁志慧,尤朝阳,王磊,等.中温NaOH预处理对玉米秸秆发酵产沼气的影响[J].江苏农业科学,2016,44(6):506-510Yuan Zhihui,You Chaoyang,Wang Lei,et al.Effect of medium temperature NaOH pretreatment on biogas production from corn straw fermentation[J].Jiangsu Agricultural Sciences,2016,44(6):506-510
15李平,龙翰威,高立洪,等.不同预处理方式下水稻秸秆厌氧消化性能比较[J].农业工程学报,2015,31(12):200-204Li Ping,Long Hanwei,Gao Lihong,et al.Comparison of anaerobic digestion capability of rice straw with different pretreatment methods[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(12):200-204
16李赫龙.作物秸秆木质素和半纤维素的分离纯化及结构表征[D].杨凌:西北农林科技大学,2016Li Helong.Isolation and structure characteriation of lignin and hemicelluloses form crop straw[D].Yangling:Northwest A&F University,2016
17周富春.基于VS的有机固体废物厌氧消化的趋势分析[J].环境科学与技术,2009,32(6):121-122Zhou Fuchun.Trendency ananlysis on anaerobic digestion of organic solid waste with VS[J].Environmental Science&Technology,2009,32(6):121-122
18夏挺.高固浓度玉米秸秆厌氧发酵产酸特性及其对产沼气的影响[D].沈阳:沈阳农业大学,2017Xia Ting.Effect of volatile acid on the characteristics of solid state anaerobic fermentation of corn stalk[D].Shenyang:Shenyang Agricultural University,2017
19李连华,马隆龙,袁振宏,等.农作物秸秆的厌氧消化试验研究[J].农业环境科学学报,2007,26(1):335-338Li Lianhua,Ma Longlong,Yuan Zhenhong,et al.Study on anaerobic digestion of straw stalk[J].Journal of Agro-envrionment Science,2007,26(1):335-338
20孙辰,刘荣厚,曹卫星.猪粪和水牛粪厌氧消化产甲烷潜力的研究[J].中国沼气,2014,32(1):49-52Sun Chen,Liu Ronghou,Cao Weixing.Methane production potential of pig manure and buffalo manure[J].China Biogas,2014,32(1):49-52
21 Buswell A M,Mueller H F.Mechanism of methane fermentation[J].Journal of the American Chemical Society,1948,70(3):550-552
22张鸣,赵国虎,李万江,等.不同时间NaOH预处理对玉米秸秆中温厌氧发酵的影响[J].生态环境学报,2017,26(9):1605-1611Zhang Ming,Zhao Guohu,Li Wanjiang,et al.Effects of NaOH pretreatment at different time on anaerobic fermentation of corn straw at mesophilic temperatures[J].Ecology and Environmental Sciences,2017,26(9):1605-1611
23李平,蒋滔,李萍,等.不同预处理方式对玉米秸秆产气效果的影响[J].西南农业学报,2014,27(5):2187-2194Li Ping,Jiang Tao,Li Ping,et al.Effects of different pretreatment methods on anaerobic digestion of corn straw for biogas production[J].Southwest China Journal of Agricultural Sciences,2014,27(5):2187-2194
24张彬,蒋滔,高立洪,等.猪粪与玉米秸秆混合中温发酵产气效果[J].环境工程学报,2014,8(11):4991-4997Zhang Bin,Jiang Tao,Gao Lihong,et al.Aerogenesis characteristics of swine feces mixed with corn straw under mesophilic fermentation[J].Chinese Journal of Environmental Engineering,2014,8(11):4991-4997
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |