Remediation of arsenic contaminated water and soil using mechanically (ball milling) activated and pyrite-amended electrolytic manganese slag

Zhihao Ha; Mengyu Ma; Xiaohan Tan; Yanxin Lan; Yanmin Lin; Tian C Zhang; Dongyun Du

doi:10.1016/j.envres.2023.116607

Remediation of arsenic contaminated water and soil using mechanically (ball milling) activated and pyrite-amended electrolytic manganese slag

Environ Res. 2023 Oct 1:234:116607. doi: 10.1016/j.envres.2023.116607. Epub 2023 Jul 8.

Authors

Zhihao Ha¹, Mengyu Ma², Xiaohan Tan¹, Yanxin Lan¹, Yanmin Lin¹, Tian C Zhang³, Dongyun Du⁴

Affiliations

¹ Hubei Province Engineering Research Center for Control and Treatment of Heavy Metal Pollution, South-Central Minzu University, Wuhan, 430074, China.
² Hubei Province Engineering Research Center for Control and Treatment of Heavy Metal Pollution, South-Central Minzu University, Wuhan, 430074, China; Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
³ Civil & Environmental Engineering Department, College of Engineering, University of Nebraska-Lincoln, Omaha, NE, 68182, USA.
⁴ Hubei Province Engineering Research Center for Control and Treatment of Heavy Metal Pollution, South-Central Minzu University, Wuhan, 430074, China. Electronic address: dydu666@mail.scuec.edu.cn.

PMID: 37429402
DOI: 10.1016/j.envres.2023.116607

Abstract

With the development of industry, heavy metal (HM) pollution of soil has become an increasingly serious problem. Using passivators made of industrial by-products to immobilize HMs in contaminated soil is a promising in-situ remediation technology. In this study, the electrolytic manganese slag (EMS) was modified into a passivator (named M-EMS) by ball milling, and the effects of M-EMS on adsorption of As(V) in aquatic samples and on immobilization of As(V) and other HMs in soil samples were investigated under different conditions. Results demonstrated that M-EMS had a maximum As(V) adsorption capacity of 65.3 mg/g in the aquatic samples. Adding M-EMS to the soil reduced the leaching of As (from 657.2 to 319.8 μg/L) and other HMs after 30 d of incubation, reduced the bioavailability of As(V) and improved the quality and microbial activity of the soil. The mechanism for M-EMS to immobilize As in the soil are complex reactions, ion exchange reaction with As and electrostatic adsorption. This work provides new ideas of using waste residue matrix composites for sustainable remediation of Arsenic in the aquatic environment and soil.

Keywords: Adsorption; Arsenic contamination; Electrolytic manganese slag; Soil remediation.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Arsenic* / analysis
Electrolytes
Environmental Restoration and Remediation*
Manganese
Metals, Heavy* / chemistry
Soil / chemistry
Soil Pollutants* / analysis
Water
Water Pollution

Substances

Arsenic
Manganese
pyrite
Soil
Soil Pollutants
Metals, Heavy
Electrolytes
Water