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To address the resource utilization of agricultural wastes such as straw and livestock and poultry manure, this study investigated the effects of biochar addition on anaerobic digestion of a straw-manure mixture, using pig manure and wheat straw as raw materials. The biochar was devrived from the digestate obtained after anaerobic digestion of pig manure and wheat straw and its modification forms. The results showed that the addition of digestate-derived biochar played an important role in promoting electron transfer between species and providing more attachment sites for microorganisms. Specifically, biochar hydrolyzed with a manure-to- straw ratio of 1:1 and a solid content of 8% in the digestion system yielded the best gas production performance, increasing methane production by 17.59% compared to the control group without biochar. Furthermore, co-modification of this biochar with urea (as a nitrogen source) and nano zero-valent iron greatly enhanced its specific surface area and electron transfer capacity, leading to a 41.03% increase in methane production compared to the control. Additionally, the larger pore volume of digestate-derived biochar allowed it to adsorb volatile fatty acids from the digestate, thereby balancing the acidity and alkalinity of the system. The biochar also adsorbed up to 28.2% of ammonium nitrogen and 35.01% of nitrate nitrogen from the digestate, mitigating ammonium inhibition and potentially rectifying an imbalanced carbon-to-nitrogen ratio in the system. In conclusion, digestate-derived biochar and its modification represent an effective strategy for enhancing methane yield in anaerobic digestion systems.

, authors=Guang-yin CHEN1, 2, *, Xu LIU2, Gong-xun ZHENG2, Yu-juan SUN2, Guang-cai GE2, authorsList=Guang-yin CHEN, Xu LIU, Gong-xun ZHENG, Yu-juan SUN, Guang-cai GE, authorCompany=null, correspAuthors=Guang-yin CHEN, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314918385343881883, articleId=1314918383246729881, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=沼渣生物炭及其改性对秸粪厌氧发酵的影响, columnId=1240689598737731645, journalTitle=中国环境科学, columnName=固体废物, runingTitle=null, highlight=null, articleAbstract=

为解决秸秆和畜禽粪便等农业废弃物的资源化问题,以猪粪和麦秸为原料,以猪粪麦秸厌氧发酵后的沼渣制作的生物炭及其改性为手段,研究生物炭添加对秸粪混合物厌氧发酵的影响.结果表明,添加沼渣生物炭在促进种间电子转移和为微生物提供更多附着位点方面有重要作用,其中添加秸粪比为1:1,发酵系统含固率为8%的沼渣热解制备的生物炭的产气效果最好,甲烷产量较未添加生物炭的对照组提升了17.59%;利用尿素为氮源和纳米零价铁共改性以上生物炭,可大幅度提升生物炭比表面积和种间电子转移能力,其甲烷产量较对照组提升41.03%.同时,沼渣生物炭添加后,相较一般生物炭更大的孔容可吸附沼液中的部分挥发性脂肪酸,进而平衡系统的酸碱性;添加生物炭后,最大可吸附沼液中28.2%的铵态氮和35.01%的硝态氮,进而减少系统铵抑制和有望调节系统不平衡的碳氮比.沼渣生物炭及其改性是解决厌氧发酵甲烷产率较低的有效方法.

, authors=陈广银1, 2, *, 刘旭2, 郑功勋2, 孙雨娟2, 葛广才2, authorsList=陈广银, 刘旭, 郑功勋, 孙雨娟, 葛广才, authorCompany=null, correspAuthors=陈广银, authorNote=

陈广银(1981-),男,江苏盐城人,副研究员,博士,主要从事生物能源和畜禽养殖污染治理方面的研究.发表论文60余篇..

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陈广银(1981-),男,江苏盐城人,副研究员,博士,主要从事生物能源和畜禽养殖污染治理方面的研究.发表论文60余篇..

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陈广银(1981-),男,江苏盐城人,副研究员,博士,主要从事生物能源和畜禽养殖污染治理方面的研究.发表论文60余篇..

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沼渣生物炭及其改性对秸粪厌氧发酵的影响
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陈广银 1, 2, * , 刘旭 2 , 郑功勋 2 , 孙雨娟 2 , 葛广才 2
中国环境科学 | 固体废物 2025,45(11): 6189-6198
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中国环境科学 |固体废物 2025 , 45 (11) : 6189 -6198
沼渣生物炭及其改性对秸粪厌氧发酵的影响
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陈广银(1981-),男,江苏盐城人,副研究员,博士,主要从事生物能源和畜禽养殖污染治理方面的研究.发表论文60余篇..

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陈广银(1981-),男,江苏盐城人,副研究员,博士,主要从事生物能源和畜禽养殖污染治理方面的研究.发表论文60余篇..

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陈广银1, 2, * , 刘旭2, 郑功勋2, 孙雨娟2, 葛广才2
作者信息
  • 1.安徽省水土污染治理与修复工程实验室,安徽 芜湖 241002
  • 2.安徽师范大学生态与环境学院,安徽 芜湖 241002
通讯作者:
* 责任作者,副教授,
作者简介:

陈广银(1981-),男,江苏盐城人,副研究员,博士,主要从事生物能源和畜禽养殖污染治理方面的研究.发表论文60余篇..

Effects of digestate-derived biochar and its modification on anaerobic co-digestion of manure and straw
Guang-yin CHEN1, 2, * , Xu LIU2, Gong-xun ZHENG2, Yu-juan SUN2, Guang-cai GE2
Affiliations
  • 1.Anhui Engineering Laboratory of Soil and Water Pollution Control and Remediation, Wuhu 241002, China
  • 2.School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
出版时间: 2025-11-20
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为解决秸秆和畜禽粪便等农业废弃物的资源化问题,以猪粪和麦秸为原料,以猪粪麦秸厌氧发酵后的沼渣制作的生物炭及其改性为手段,研究生物炭添加对秸粪混合物厌氧发酵的影响.结果表明,添加沼渣生物炭在促进种间电子转移和为微生物提供更多附着位点方面有重要作用,其中添加秸粪比为1:1,发酵系统含固率为8%的沼渣热解制备的生物炭的产气效果最好,甲烷产量较未添加生物炭的对照组提升了17.59%;利用尿素为氮源和纳米零价铁共改性以上生物炭,可大幅度提升生物炭比表面积和种间电子转移能力,其甲烷产量较对照组提升41.03%.同时,沼渣生物炭添加后,相较一般生物炭更大的孔容可吸附沼液中的部分挥发性脂肪酸,进而平衡系统的酸碱性;添加生物炭后,最大可吸附沼液中28.2%的铵态氮和35.01%的硝态氮,进而减少系统铵抑制和有望调节系统不平衡的碳氮比.沼渣生物炭及其改性是解决厌氧发酵甲烷产率较低的有效方法.

粪秸  /  沼渣生物炭  /  改性  /  纳米零价铁  /  厌氧发酵

To address the resource utilization of agricultural wastes such as straw and livestock and poultry manure, this study investigated the effects of biochar addition on anaerobic digestion of a straw-manure mixture, using pig manure and wheat straw as raw materials. The biochar was devrived from the digestate obtained after anaerobic digestion of pig manure and wheat straw and its modification forms. The results showed that the addition of digestate-derived biochar played an important role in promoting electron transfer between species and providing more attachment sites for microorganisms. Specifically, biochar hydrolyzed with a manure-to- straw ratio of 1:1 and a solid content of 8% in the digestion system yielded the best gas production performance, increasing methane production by 17.59% compared to the control group without biochar. Furthermore, co-modification of this biochar with urea (as a nitrogen source) and nano zero-valent iron greatly enhanced its specific surface area and electron transfer capacity, leading to a 41.03% increase in methane production compared to the control. Additionally, the larger pore volume of digestate-derived biochar allowed it to adsorb volatile fatty acids from the digestate, thereby balancing the acidity and alkalinity of the system. The biochar also adsorbed up to 28.2% of ammonium nitrogen and 35.01% of nitrate nitrogen from the digestate, mitigating ammonium inhibition and potentially rectifying an imbalanced carbon-to-nitrogen ratio in the system. In conclusion, digestate-derived biochar and its modification represent an effective strategy for enhancing methane yield in anaerobic digestion systems.

manure straw  /  digestate biochar  /  modification  /  nano ZVI  /  anaerobic digestion
陈广银, 刘旭, 郑功勋, 孙雨娟, 葛广才. 沼渣生物炭及其改性对秸粪厌氧发酵的影响. 中国环境科学, 2025 , 45 (11) : 6189 -6198 .
Guang-yin CHEN, Xu LIU, Gong-xun ZHENG, Yu-juan SUN, Guang-cai GE. Effects of digestate-derived biochar and its modification on anaerobic co-digestion of manure and straw[J]. China Environmental Science, 2025 , 45 (11) : 6189 -6198 .
  • 安徽高校协同创新项目(GXXT-2019-010)
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  • 接收时间:2025-03-01
  • 首发时间:2026-10-08
  • 出版时间:2025-11-20
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  • 收稿日期:2025-03-01
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安徽高校协同创新项目(GXXT-2019-010)
作者信息
    1.安徽省水土污染治理与修复工程实验室,安徽 芜湖 241002
    2.安徽师范大学生态与环境学院,安徽 芜湖 241002

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* 责任作者,副教授,
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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