文章摘要
陶玲,张倩,张雪彬,周雅琦,孙梦洁,任珺.凹凸棒石-污泥共热解生物炭对玉米苗期生长特性和重金属富集效应的影响[J].农业环境科学学报,2020,39(7):1512-1520.
凹凸棒石-污泥共热解生物炭对玉米苗期生长特性和重金属富集效应的影响
Influence of biochar prepared by co-pyrolysis with attapulgite and sludge on maize growth and heavy metal accumulation
投稿时间:2019-12-14  
DOI:10.11654/jaes.2019-1417
中文关键词: 凹凸棒石  污泥生物炭  重金属  钝化  富集
英文关键词: attapulgite  sludge biochar  heavy metal  stabilization  accumulation
基金项目:国家自然科学基金项目(51668034);甘肃省大学生创新创业训练计划项目(201910732022)
作者单位E-mail
陶玲 兰州交通大学环境与市政工程学院环境生态研究所, 兰州 730070
甘肃瀚兴环保科技有限公司, 兰州 730070
甘肃省黄河水环境重点实验室, 兰州 730070 
 
张倩 兰州交通大学环境与市政工程学院环境生态研究所, 兰州 730070  
张雪彬 兰州交通大学环境与市政工程学院环境生态研究所, 兰州 730070  
周雅琦 兰州交通大学环境与市政工程学院环境生态研究所, 兰州 730070  
孙梦洁 兰州交通大学环境与市政工程学院环境生态研究所, 兰州 730070  
任珺 兰州交通大学环境与市政工程学院环境生态研究所, 兰州 730070
甘肃瀚兴环保科技有限公司, 兰州 730070
甘肃省黄河水环境重点实验室, 兰州 730070 
renjun@mail.lzjtu.cn 
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中文摘要:
      利用凹凸棒石和污泥制备7种不同比例(0、5%、10%、15%、20%、25%、30%)的凹凸棒石-污泥共热解生物炭。通过盆栽试验调查凹凸棒石-污泥共热解生物炭对玉米生长和土壤中重金属(Cu、Zn、Pb、Ni、Cd)富集的影响。结果表明:凹凸棒石添加量为15%的凹凸棒石-污泥共热解生物炭显著促进了玉米的出苗率和株高,分别增加了55.87%和24.35%,凹凸棒石添加量为20%时,根长、鲜质量和干质量分别增加了65.57%、79.85%和76.84%。凹凸棒石-污泥共热解生物炭对重金属的富集有显著抑制作用,凹凸棒石添加量为15%时,显著抑制了玉米对Cu、Zn、Ni、Cd的富集,分别减少了55.01%、49.27%、54.87%、41.99%,凹凸棒石添加量为20%时,使重金属Pb的富集量减少了34.01%。凹凸棒石的添加增强了污泥生物炭的钝化功能,为污泥安全利用提供了一种新方法。
英文摘要:
      Seven kinds of biochar were prepared by co-pyrolysis with sludge and different amounts of attapulgite(0, 5%, 10%, 15%, 20%, 25%, 30%)and were applied to maize seedlings in pot experiments in order to stabilize heavy metals(Cu, Zn, Pb, Ni, Cd)and affect growth. The results suggested that adding 15% attapulgite to biochar significantly increased maize germination rate and plant height, which increased by 55.87% and 24.35%, respectively. When the amount of attapulgite added was 20%, root length, fresh weight, and dry weight increased by 65.57%, 79.85%, and 76.84%, respectively. Biochar prepared by co-pyrolysis with attapulgite and sludge significantly inhibited the enrichment of heavy metals. The addition of 15% attapulgite significantly inhibited the accumulation of Cu, Zn, Ni, and Cd in maize, reducing accumulation by 55.01%, 49.27%, 54.87%, 41.99%, respectively. Furthermore, the addition of 20% attapulgite reduced the accumulation of Pb by 34.01%. The addition of attapulgite enhances the passivation function of sludge biochar and provides a new method for the safe use of sludge.
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