| 麦秆酸预处理后与猪粪混合发酵提高产气量的效应研究 |
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| 引用本文： | 周莎,黎雪,翟宁宁,张彤,邹书珍,毛春兰,王晓娇,杨改河. 麦秆酸预处理后与猪粪混合发酵提高产气量的效应研究[J]. 环境科学学报, 2015, 35(8): 2526-2533 |
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| 作者姓名： | 周莎 黎雪 翟宁宁 张彤 邹书珍 毛春兰 王晓娇 杨改河 |
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| 作者单位： | 1. 西北农林科技大学农学院, 杨凌 712100;2. 陕西省循环农业工程技术研究中心, 杨凌 712100,1. 西北农林科技大学农学院, 杨凌 712100;2. 陕西省循环农业工程技术研究中心, 杨凌 712100,1. 西北农林科技大学农学院, 杨凌 712100;2. 陕西省循环农业工程技术研究中心, 杨凌 712100,1. 西北农林科技大学农学院, 杨凌 712100;2. 陕西省循环农业工程技术研究中心, 杨凌 712100,1. 西北农林科技大学农学院, 杨凌 712100;2. 陕西省循环农业工程技术研究中心, 杨凌 712100,1. 西北农林科技大学林学院, 杨凌 712100;2. 陕西省循环农业工程技术研究中心, 杨凌 712100,1. 西北农林科技大学农学院, 杨凌 712100;2. 陕西省循环农业工程技术研究中心, 杨凌 712100,1. 西北农林科技大学农学院, 杨凌 712100;2. 陕西省循环农业工程技术研究中心, 杨凌 712100 |
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| 基金项目： | 西北农林科技大学博士科研启动基金(No.Z109021403) |
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| 摘 要： | 为了研究不同水平的酸处理对麦秆混合发酵过程中各指标变化的影响,本试验通过测定不同醋酸浓度、时间处理后的麦秆与猪粪混合厌氧发酵进程中还原糖、挥发性脂肪酸(VFA)含量,以及p H值变化和甲烷产量,探究各指标的关系并优化得出最佳醋酸处理组合,以期为酸预处理混合发酵实现高甲烷产量提供可靠的理论依据.结果表明,醋酸处理后的麦秆通过与猪粪混合发酵可明显提高甲烷单位产量,增幅为124.28%~207.40%.发酵过程中还原糖、VFA、p H值间相互影响.通过响应面法建立模型,得到醋酸处理的最优组合为浓度3.35%、时间6.75d,最大甲烷单位产量751.97 m L·g-1(以VS计).
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| 关 键 词： | 醋酸 预处理 小麦秸秆 猪粪 混合发酵 |
| 收稿时间： | 2015-01-22 |
| 修稿时间： | 2015-03-11 |
Enhancement of methane production by anaerobic co-digestion of acid-pretreated straw and pig manure |
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| ZHOU Sh,LI Xue,ZHAI Ningning,ZHANG Tong,ZOU Shuzhen,MAO Chunlan,WANG Xiaojiao and YANG Gaihe. Enhancement of methane production by anaerobic co-digestion of acid-pretreated straw and pig manure[J]. Acta Scientiae Circumstantiae, 2015, 35(8): 2526-2533 |
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| Authors: | ZHOU Sh LI Xue ZHAI Ningning ZHANG Tong ZOU Shuzhen MAO Chunlan WANG Xiaojiao YANG Gaihe |
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| Affiliation: | 1. College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100;2. Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100,1. College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100;2. Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100,1. College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100;2. Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100,1. College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100;2. Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100,1. College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100;2. Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100,1. College of Forestry, Northwest Agriculture and Forestry University, Yangling 712100;2. Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100,1. College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100;2. Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100 and 1. College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100;2. Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling 712100 |
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| Abstract: | In order to investigate the effect of co-digestion of manure and wheat straw pretreated by different levels of acid, this study measured the changes of reduced sugar, volatile fatty acid (VFA) content, pH and methane yields during the co-digestion, and determined the relationship between the components of each index and the best pre-treatment combination in order to provide a reliable theoretical basis for enhancing methane yields. The results showed that acetic acid pre-treatment of straw significantly improved the methane yields by about 124.28%~207.40%, and the reduced sugar, VFA content and pH influenced each other and the methane yields. The optimal acetic acid pre-treatment condition were the concentration of 3.35%, the pre-treatment time of 6.75 days with the maximum methane yields of 751.97 mL · g-1 (VS). |
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| Keywords: | acetic acid pre-treatment wheat straw pig manure mixed anaerobic digestion |
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