农业环境科学学报2025，Vol.44Issue(7)：1902-1909,8.DOI:10.11654/jaes.2024-0699
生物炭/过硫酸盐对沼液碳氮组分变化的影响
Effects of biochar/persulfate on changes of carbon and nitrogen components in biogas slurry
摘要
Abstract
In order to investigate the effect of biochar/persulfate on mineralization of organic matter in different molecular weight range and seed germination index in biogas slurry,biochar/persulfate oxidation tests were carried out.The results showed that compared with the original biogas slurry treatment,the addition of 1.8 g·L-1 potassium persulfate and 2.0 g·L-1 biochar could maintain the total nitrogen concentration of biogas slurry and significantly increase the dissolved organic nitrogen concentration by 82.20%(187.43 mg·L-1).The content of particulate organic matter(35.77 mg·L-1)was decreased by 59.11%,and the germination index was increased by 46.17%.Importance analysis showed that oxidation time and dissolved organic matter with molecular weight less than 10 kDa were the main factors affecting bioavailability of biogas slurry,and their relative importance was 0.29 and 0.18,respectively.The results showed that 1.8 g·L-1 potassium persulfate and 2.0 g·L-1 biochar could efficiently mineralize refractory organic matter,improve seed germination index,and reduce stable time of biogas slurry,which could provide theoretical basis for the safe utilization of biogas slurry.关键词
沼液/生物炭/过硫酸盐/碳氮组分/种子发芽指数Key words
biogas slurry/biochar/persulfate/carbon and nitrogen components/seed germination index分类
农业科技引用本文复制引用
李世旗,刘鑫,孔凡靖,杨志敏,陈玉成..生物炭/过硫酸盐对沼液碳氮组分变化的影响[J].农业环境科学学报,2025,44(7):1902-1909,8.基金项目
重庆市固体废物管理中心科技项目(CQGGZX2024003) （CQGGZX2024003）
重庆市长江生态环境保护修复驻点跟踪研究(重庆)专题(F2020299) Science and Technology Project of Chongqing Solid Waste Management Center(CQGGZX2024003) （重庆）
Chongqing Yangtze River Ecological Environment Protection and Restoration Site Tracking Research(Chongqing)Topic(F2020299) （Chongqing）
