海泡石基钝化剂对猪粪中铜、锌钝化的影响

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英文篇名：Effects of sepiolite based passivator on the stabilization of Cu and Zn in pig manure 作者：周颖 ; 罗惠莉 ; 吴根义 ; 刘子琳 ; 欧玮祺 ; 王宇霖 ; 姜彩红 英文作者：ZHOU Ying;LUO Huili;WU Genyi;LIU Zilin;OU Weiqi;WANG Yulin;JIANG Caihong;Department of Resources and Environment,Hunan Agricultural University;South China Institute of Environmental Sciences,MEP; 关键词：钝化剂 ; 猪粪 ; 重金属 ; 海泡石 英文关键词：passivator;;pig manure;;heavy metal;;sepiolite 中文刊名：环境污染与防治 英文刊名：Environmental Pollution & Control 机构：湖南农业大学资源环境学院;环境保护部华南环境科学研究所; 出版日期：2019-01-15 出版单位：环境污染与防治 年：2019 期：01 基金：湖南省教育厅科学研究重点项目(No.16A092);; 湖南省重点研发计划项目(No.2016SK2061);; 湖南农业大学人才科学基金资助项目(No.15RCPT05) 语种：中文; 页：58-62 页数：5 CN：33-1084/X ISSN：1001-3865 分类号：X713

摘要

研究了海泡石基钝化剂在猪粪自然堆沤过程中对重金属铜、锌钝化的影响。采用Tessier五步提取法分析猪粪、土壤中铜、锌形态变化,并将钝化后的猪粪施用于油菜盆栽试验。结果表明:不同施用量的海泡石对猪粪中的铜、锌进行钝化时,海泡石添加比例超过5%(质量分数),钝化效果较好;采用不同海泡石基钝化剂时,施用改性海泡石-赤泥(海泡石、赤泥质量比1∶1)钝化效果最明显,猪粪中可交换态铜、锌分别降低36.79%和33.35%。施用钝化猪粪与未处理猪粪相比,油菜的铜、锌吸收率分别降低5.94%～12.13%和4.21%～11.68%。可见,海泡石基钝化剂能有效降低猪粪中铜、锌的活性及其生物吸收性,且以改性海泡石-赤泥作为钝化剂效果最优。
        The effects of sepiolite-based passivators on the stabilization of heavy metals Cu and Zn during the natural composting of pig manure were studied.Tessier five-step extraction method was used to determine the speciation changes of Cu and Zn in pig manure and soil.The rape pot experiment was also conducted using sepiolitebased passivator stabilized pig manure.The results showed that good stabilization performance of Cu and Zn in pig manure by different amounts of sepiolite was achieved when sepiolite addition ratio above 5%(mass fraction).The effects of different sepiolite-based passivators for the stabilization of Cu and Zn in pig manure were also studied.The stabilization effect was obvious when applying modified sepiolite-red mud(with mass ratio of sepiolite and red mud1∶1)as passivator in pig manure.The exchangeable Cu and Zn in pig manure was reduced by 36.79%and 33.35%,respectively.Compared with untreated pig manure,the stabilization effect of modified pig manure was better.The absorption rate of Cu and Zn in rape was reduced by 5.94%-12.13%and 4.21%-11.68%,respectively.It was indicated that the sepiolite-based passivator could effectively reduce the activity and bio-absorbability of Cu and Zn in pig manure,with modified sepiolite-red mud as the best passivator.

引文

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