人工鸟粪石对Cd污染土壤中黑麦草生长的影响

章绍康; 弓晓峰; 林媛; 吴莉; 熊捷迁; 吴静琳

doi:10.13205/j.hjgc.202109027

人工鸟粪石对Cd污染土壤中黑麦草生长的影响

doi: 10.13205/j.hjgc.202109027

1. 南昌大学资源环境与化工学院鄱阳湖环境与资源利用教育部重点实验室, 南昌 330031;
2. 万载县环境保护局, 江西宜春 336100

基金项目:

国家自然科学基金项目（41761095）；江西省研究生创新项目（YC2017-B003）。

详细信息

作者简介:
章绍康(1991-),男,博士,主要研究方向为土壤修复。77597646@qq.com

通讯作者:
弓晓峰(1962-),女,教授,主要研究方向为重金属污染防治、植物修复。xfgong@ncu.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2020-07-10
- 网络出版日期: 2022-01-21

REMEDIATION OF Cd CONTAMINATED SOIL BY ARTIFICIAL STRUVITE COMBINED WITH RYEGRASS

1. Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China;
2. Wanzai Environmental Protection Agency, Yichun 336100, China

摘要

摘要: 以MgCl₂为添加剂，调节含N、P废水中n（Mg²⁺）∶n（NH₄⁺）∶n（PO₄^3-）比例为1.15∶1∶1，pH为8.5~9，反应时间30 min，经SEM、FT-IR、XRD表征后发现，所得产物以鸟粪石为主。将人工鸟粪石联合黑麦草修复Cd污染土壤，研究表明：人工鸟粪石可有效提升土壤pH、速效磷含量以及酶活性，同时可以降低土壤中交换态Cd含量，增加黑麦草叶片谷胱甘肽GSH含量来降低叶片内丙二醛MDA含量，减少膜脂过氧化程度。与对照相比，人工鸟粪石使黑麦草生物量提升81.7%~148.5%，Cd总提取量提升25.41%~44.27%，且当添加剂量为5%时修复效率最佳。
- 人工鸟粪石 /
- Cd /
- 土壤 /
- 黑麦草 /
- 修复
Abstract: With magnesium chloride as the additive, the artificial struvite was prepared when the ratio of n(Mg²⁺):n(NH₄⁺):n(PO₄^3-) in N and P wastewater was adjusted to be 1.15:1:1, pH was between 8.5 and 9, and the reaction time was 30 min. The product was characterized by SEM, FT-IR and XRD, indicating that struvite was the main content. Artificial struvite combined with ryegrass was used to remediation soil contaminated by Cd. Studies showed that artificial struvite could effectively improve the soil pH, available phosphorus content and enzyme activity to increase soil environmental quality. At the same time, it could reduce the exchangable Cd content in the soil and increase the GSH content in the ryegrass leaves to reduce the MDA content in the leaves and reduce the degree of membrane lipid peroxidation. Compared with the control, the biomass of ryegrass was increased by 81.7%~148.5%, and the total extraction of Cd was increased by 25.41%~44.27%. The remediation efficiency was the best when the additive dosage was 5%.
- artificial struvite /
- Cd /
- soil /
- ryegrass /
- remediation

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