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文章编号: 1672-6987(2020)03-0042-06; DOI: 10.16351/j.1672-6987.2020.03.005
王影a, 王莉鑫a, 戴冬梅a, 邓晓燕b, 许泳吉a, 高洪涛a*
(青岛科技大学 a.化学与分子工程学院;b.环境与安全工程学院,山东 青岛 266042)
摘要: 将柚皮洗涤干燥后经过水热活化去除生物油,再加入ZnSO4进行二次水热反应,产品干燥后于管式石英炉中,在氮气气氛下热解,最后得到片层结构的氧化锌复合生物炭。Langmuir 吸附等温模型计算得到其最大吸附量可达22222 mg·g-1。将其用于土壤中钝化Cu(Ⅱ),以DTPA提取土壤中Cu(Ⅱ)计算其生物可利用态,结果表明:不同污染程度的土壤中添加ZnO/生物炭后,Cu(Ⅱ)的生物可利用态都有了显著地降低,表明污染毒性降低。
关键词: ZnO复合生物炭; 吸附; 钝化; Cu(Ⅱ)
中图分类号: X 131.3文献标志码: A
引用格式: 王影, 王莉鑫, 戴冬梅, 等. ZnO复合生物炭钝化土壤中Cu(Ⅱ)\[J\]. 青岛科技大学学报(自然科学版), 2020, 41(3): 42-47.
WANG Ying, WANG Lixin, DAI Dongmei, et al.Passivation of Cu(Ⅱ) in soil by ZnO/biochar composite\[J\]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2020, 41(3): 42-47.
Passivation of Cu(Ⅱ) in Soil by ZnO/Biochar Composite
WANG Yinga, WANG Lixina, DAI Dongmeia, DENG Xiaoyanb, XU Yongjia, GAO Hongtaoa
(a.College of Chemistry and Molecular Engineering; b.College of Environment and Safety Engineering,
Qingdao University of Science and Technology,Qingdao 266042, China)
Abstract: After washing and drying, the pomelo peel was hydrothermally activated to remove its bio-oil, then ZnSO4 was added in for hydrothermal reaction. After dried and pyrolyzed in a tubular quartz furnace under nitrogen atmosphere, the ZnO/biochar composite with sheet structure was obtained. The maximum adsorption capacity of ZnO/biochar for Cu(Ⅱ) was 22222 mg·g-1. The bioavailability of Cu (Ⅱ) was evaluated by DTPA extracting. The experimental results showed that the bioavailability of Cu(Ⅱ)decreased significantly after adding ZnO/biochar to soil with different pollution levels. It indicated that ZnO/biochar could effectively remove the pollution and hazard of Cu(Ⅱ) from soils.
Key words: ZnO/biochar; adsorption; passivation; Cu(Ⅱ)
收稿日期: 2019-04-21
基金项目: 山东省重点研发计划项目(2017GSF16105,2018GGX102004,2018GSF117007);国家级大学生创新创业训练计划项目(201810426027).
作者简介: 王影(1993—),女,硕士研究生.*通信联系人.