| 温雅杰,兰天,张乐川,王博,吴迪,高义汗,党鑫,红梅.生物炭强化养牛粪水厌氧消化及氮形态转化[J].农业环境科学学报,2026,45(9):2397-2410. |
| 生物炭强化养牛粪水厌氧消化及氮形态转化 |
| Anaerobic digestion of cattle manure with biochar enhancement and the transformation of nitrogen forms |
| 投稿时间：2025-10-11 |
| DOI：10.11654/jaes.2025-0924 |
| 中文关键词: 养牛粪水 厌氧消化 生物炭 产气效率 氮形态 |
| 英文关键词: cattle manure slurry anaerobic digestion biochar gas production efficiency forms of nitrogen |
| 基金项目:国家重点研发计划项目（2022YFD1900302） |
| 作者 | 单位 | E-mail | | 温雅杰 | 内蒙古农业大学资源与环境学院, 呼和浩特 010011
内蒙古自治区土壤质量与养分资源重点实验室, 呼和浩特 010011 | | | 兰天 | 内蒙古农业大学资源与环境学院, 呼和浩特 010011
清华大学环境学院, 北京 100084 | | | 张乐川 | 中粮集团有限公司, 北京 100020 | | | 王博 | 内蒙古自治区农牧业科学院动物营养与饲料研究所, 呼和浩特 010031 | | | 吴迪 | 内蒙古农业大学资源与环境学院, 呼和浩特 010011
内蒙古自治区土壤质量与养分资源重点实验室, 呼和浩特 010011 | | | 高义汗 | 内蒙古农业大学资源与环境学院, 呼和浩特 010011
内蒙古自治区土壤质量与养分资源重点实验室, 呼和浩特 010011 | | | 党鑫 | 内蒙古农业大学资源与环境学院, 呼和浩特 010011 | | | 红梅 | 内蒙古农业大学资源与环境学院, 呼和浩特 010011
内蒙古民族大学草业学院, 内蒙古 通辽 028000 | nmczhm1970@126.com |
|
| 摘要点击次数: 118 |
| 全文下载次数: 2 |
| 中文摘要: |
| 本研究针对集约化养牛场粪水存在的高有机负荷、系统消化效能不足及氮素利用效率低等问题，提出以玉米残渣生物炭作为添加剂，强化厌氧消化过程并促进氮形态转化的新策略。试验以玉米芯和玉米秸秆为原料，分别在350℃和500℃条件下制备生物炭，并将其添加至养牛粪水系统中进行30 d的批次厌氧消化，系统解析生物炭对系统运行效能与氮转化的影响机制。结果表明：生物炭对厌氧消化系统的强化是其孔隙吸附、表面官能团化学吸附、芳香结构及导电性共同作用的结果，可提升甲烷产率2.18%~21.04%，其中玉米芯在500℃热解得到的生物炭（CBC500）的促进作用最为显著，平均甲烷产率达12.77%[以总固体（TS）计]。体系中氨氮占总氮的93.67%~94.81%，为主要氮形态，其次为有机氮与硝态氮，亚硝态氮可忽略不计。生物炭显著降低了系统末期的总氮残留，其中CBC500组总氮含量最低（32 737.36 mg·kg-1），其作用机制表现为促进氨氮生成并抑制其转化，从而强化有机氮向氨氮的迁移与累积。研究表明，添加CBC500对养牛粪水进行厌氧消化的平均甲烷产率最高且系统氨氮含量最低。 |
| 英文摘要: |
| This study addresses the issues of high organic load, insufficient system digestion efficiency, and low nitrogen utilization in intensive cattle manure systems, and proposes a new strategy to enhance anaerobic digestion and promote nitrogen transformation by using corn residue biochar as an additive. The experiment used corn cobs and corn stalks as raw materials to prepare biochar at 350 ℃ and 500 ℃, respectively, and added it to a cattle manure wastewater system for 30 days of batch anaerobic digestion, analyzing the effects of biochar on system performance and nitrogen transformation. The results indicate that the enhancement of anaerobic digestion systems by biochar is the result of the combined effects of its porous adsorption, chemical adsorption of surface functional groups, aromatic structure, and conductivity. It can increase average methane production by 2.18% to 21.04%, with the biochar derived from corn cobs pyrolyzed at 500 ℃（CBC500）showing the most significant promotion, achieving a average methane production of 12.77%（based on total solids）. Ammonia nitrogen accounts for 93.67% to 94.81% of the total nitrogen in the system, making it the main form of nitrogen, followed by organic nitrogen and nitrate nitrogen, while nitrite nitrogen can be neglected. Biochar significantly reduced the total nitrogen residue at the end of the system, with the CBC500 group having the lowest total nitrogen content（32 737.36 mg · kg-1）. Its mechanism is reflected in promoting the production of ammonia nitrogen while inhibiting its transformation, thereby enhancing the transfer and accumulation of organic nitrogen into ammonia nitrogen. Studies have shown that adding CBC500 to anaerobic digestion of cattle manure resulted in the highest average methane production and the lowest system ammonia nitrogen content. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
|
|
|
