不同改良剂修复重金属Cu/Cd污染土壤的研究  

Study on Remediation of Cu/Cd Contaminated Soil with Different Modifiers

作　　者：张硕 鲁倩 车健 王昕 余明 Zhang Shuo;Lu Qian;Che Jian;Wang Xin;Yu Ming(Hebei Geological Experiment Testing Center,Hebei,071000)

机构地区：[1]河北省地质实验测试中心,河北071000

出　　处：《当代化工研究》2022年第24期83-85,共3页Modern Chemical Research

摘　　要：土壤改良剂是一种天然或合成的高分子有机化合物。天然改良剂包括多糖、腐植酸和泥炭。合成结构改进剂主要包括氨基聚合物、聚丙烯酰胺、聚乙烯醇等高分子材料。这些高分子材料富含大量酰胺、羧基、羟基等强亲水基团,具有很高的吸水膨胀性,常用作保水剂,改善土壤团聚体结构,提高土壤渗透性,促进降水入渗,减少地表径流。本文对各种改良剂及复合物在重金属污染土壤中的应用效果进行了探讨,并对各种改良剂:蛭石(A)、泥炭(B)、骨粉(C)进行了对比试验。试验结果显示泥炭、蛭石+泥炭、蛭石+骨粉可以有效地抑制和控制卷心菜对Cu和Cd的吸收。Soil improver is a kind of natural or synthetic macromolecular organic compound. Natural improvers include polysaccharide,humic acid and peat. Synthetic structural modifiers mainly include amino polymers, polyacrylamide, polyvinyl alcohol and other polymer materials.These polymer materials are rich in a large number of amide, carboxyl, hydroxyl and other strong hydrophilic groups, and have a high water absorption expansibility. They are commonly used as water retaining agents to improve the structure of soil aggregates, improve soil permeability,promote precipitation infiltration, and reduce surface runoff. In this paper, the application effects of various modifiers and compounds in heavy metal contaminated soil were discussed, and the comparative tests of various modifiers: vermiculite(A), peat(B), bone meal(C) were carried out. The results showed that peat, vermiculite+peat, vermiculite+bone meal could effectively inhibit and control the absorption of Cu and Cd by cabbage.

关 键 词：蛭石 泥炭 骨粉 卷心菜 DTPA 重金属Cu/Cd 

分 类 号：TQ[化学工程]