文章信息/Info

Title:

Research Advances in Heavy Metal Contaminated Soil Remediation by Humin

文章編號:

16743962(2021)02014705

作者:

王平; 門姝慧; 黃占斌

（中國礦業(yè)大學(xué)（北京）化學(xué)與環(huán)境工程學(xué)院， 北京 100083）

Author(s):

WANG Ping;  MEN Shuhui;  HUANG Zhanbin

（School of Chemical and Environmental Engineering, China University of Mining and Technology�睟eijing, Beijing 100083, China）

關(guān)鍵詞:

胡敏素; 改性; 土壤修復(fù); 重金屬; 作用機(jī)制

Keywords:

humin;  modification;  soil remediation;  heavy metal;  mechanism

分類號:

X53

DOI:

10.7502/j.issn.1674-3962.202002010

文獻(xiàn)標(biāo)志碼:

A

摘要:

研發(fā)功能性明顯、安全和經(jīng)濟(jì)實用的環(huán)境材料是修復(fù)土壤重金屬污染研究領(lǐng)域的一個重要方向。胡敏素是土壤有機(jī)質(zhì)的重要組分，具有分子量大和不溶于酸堿溶液等特征，對土壤重金屬的轉(zhuǎn)化、遷移等方面起到關(guān)鍵性作用。對胡敏素來源、性質(zhì)和修復(fù)土壤重金屬污染的機(jī)制進(jìn)行總結(jié)分析。提出胡敏素對土壤重金屬污染的修復(fù)機(jī)理主要包括離子交換、靜電吸附、物理吸附、絡(luò)合反應(yīng)和化學(xué)沉淀；結(jié)合胡敏素資源利用面臨的問題，提出胡敏素改性是其重要的發(fā)展方向。通過實驗證明，通過物理和化學(xué)方法改性后，胡敏素對重金屬元素吸附鈍化效果更突出。加強(qiáng)改性胡敏素在農(nóng)田土壤重金屬鈍化效應(yīng)和土壤改良等方面的規(guī)模試驗，是其未來真正應(yīng)用于重金屬土壤污染修復(fù)需要開展的重要工作。

Abstract:

The research and development of functional, safe and economical environmental materials are an important research direction for soil remediation of heavy metal pollution. As an important component of soil organic matter, humin (HM) possesses the properties of large molecular weight and insolubility, and plays an important role in the transformation and migration of heavy metals in soil. This paper summarizes and analyzes the sources, properties and remediation mechanism of humin. The remediation mechanism of soil heavy metal pollution by humin mainly includes ion exchange, electrostatic adsorption, physical adsorption, complexation and chemical precipitation. Combining with the problems in the resources utilization of humin resources, we put forward the idea that the modification of humin is a major research direction. The results showed that the adsorption and passivation effect of humin is more prominent after physical and chemical modification. Strengthening the farmland soil experiments of humin remediation for heavy metal contamination is the inevitable course to the humin application in heavy metal contaminated soil remediation.