Enhancing remediation efficiency of cadmium-contaminated soil: integrating forage-microorganism systems with agronomic strategies.

IF 3.2 3区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Environmental Geochemistry and Health Pub Date : 2025-02-06 DOI:10.1007/s10653-025-02383-2

Rou Chen, Xiaoming Chen, Yuxuan Xu, Imran Ali, Wenkun Zhu, Jikai Liu, Qing Wang, Wenyi Huang, Xueqi Dai

{"title":"Enhancing remediation efficiency of cadmium-contaminated soil: integrating forage-microorganism systems with agronomic strategies.","authors":"Rou Chen, Xiaoming Chen, Yuxuan Xu, Imran Ali, Wenkun Zhu, Jikai Liu, Qing Wang, Wenyi Huang, Xueqi Dai","doi":"10.1007/s10653-025-02383-2","DOIUrl":null,"url":null,"abstract":"<p><p>Soil contamination due to heavy metals, especially cadmium (Cd), poses a growing concern. This study seeks to develop an economical and non-polluting sustainable remediation program for Cd-contaminated soil to address this issue. This study pioneered the exploration of Cd accumulation patterns in three forage species: Lolium multiflorum Lamk (LMJS), Sorghum bicolor × sudanense (SSBJ), and Sorghum sudanense (Piper) Stapf (SUJS) to identify their optimal harvest periods in Cd-contaminated soils. Additionally, a consortium of beneficial microorganisms (combinations of C, F, and H; C: 10% Bacillus subtilis; F: 20% Bacillus subtilis + 10% Bacillus cereus + 20% Citrobacter; H: 20% Deinococcus radiodurans + 10% Bacillus cereus) was implemented, with a focus on developing an efficient forage-microbial co-remediation system. Subsequently, agronomic strategies (mowing or chelating agents) were employed to improve the Cd enrichment capacity of the combined forage-microbe remediation system, offering sustainable field remediation strategies. The results indicate that the SSBJ + F combined remediation system was mowed on the 60th day (stubble left at 35 cm, light mowing) and harvested on the 120th day as the optimal choice. The bioaccumulation quantity (BCQ) unit accumulation in Cd-contaminated soil at a concentration of 10 mg/kg reached 0.397 mg/kg, and the annual Cd removal rate was 9.23%, representing a 29.63% increase compared to the control group. The results of this study provide valuable insights into the development of practical, field-applicable remedial measures for cadmium-contaminated soils while minimizing environmental impacts.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 3","pages":"67"},"PeriodicalIF":3.2000,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Geochemistry and Health","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s10653-025-02383-2","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 0

Abstract

Soil contamination due to heavy metals, especially cadmium (Cd), poses a growing concern. This study seeks to develop an economical and non-polluting sustainable remediation program for Cd-contaminated soil to address this issue. This study pioneered the exploration of Cd accumulation patterns in three forage species: Lolium multiflorum Lamk (LMJS), Sorghum bicolor × sudanense (SSBJ), and Sorghum sudanense (Piper) Stapf (SUJS) to identify their optimal harvest periods in Cd-contaminated soils. Additionally, a consortium of beneficial microorganisms (combinations of C, F, and H; C: 10% Bacillus subtilis; F: 20% Bacillus subtilis + 10% Bacillus cereus + 20% Citrobacter; H: 20% Deinococcus radiodurans + 10% Bacillus cereus) was implemented, with a focus on developing an efficient forage-microbial co-remediation system. Subsequently, agronomic strategies (mowing or chelating agents) were employed to improve the Cd enrichment capacity of the combined forage-microbe remediation system, offering sustainable field remediation strategies. The results indicate that the SSBJ + F combined remediation system was mowed on the 60th day (stubble left at 35 cm, light mowing) and harvested on the 120th day as the optimal choice. The bioaccumulation quantity (BCQ) unit accumulation in Cd-contaminated soil at a concentration of 10 mg/kg reached 0.397 mg/kg, and the annual Cd removal rate was 9.23%, representing a 29.63% increase compared to the control group. The results of this study provide valuable insights into the development of practical, field-applicable remedial measures for cadmium-contaminated soils while minimizing environmental impacts.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Environmental Geochemistry and Health 环境科学-工程：环境

CiteScore

8.00

自引率

4.80%

发文量

279

审稿时长

4.2 months

期刊介绍： Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people. Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes. The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.