Enhancing soil arsenic immobilization with organic and inorganic amendments: insights from sorption–desorption study

IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Monitoring and Assessment Pub Date : 2024-12-20 DOI:10.1007/s10661-024-13492-3

Md Basit Raza, Siba Prasad Datta, Debasis Golui, Mandira Barman, Prasenjit Ray, Devi Upadhyay, Rahul Mishra, Arkaprava Roy, Amit K. Dash

{"title":"Enhancing soil arsenic immobilization with organic and inorganic amendments: insights from sorption–desorption study","authors":"Md Basit Raza, Siba Prasad Datta, Debasis Golui, Mandira Barman, Prasenjit Ray, Devi Upadhyay, Rahul Mishra, Arkaprava Roy, Amit K. Dash","doi":"10.1007/s10661-024-13492-3","DOIUrl":null,"url":null,"abstract":"<div>The retention and mobility of arsenic (As) in soil depend on various physical and chemical factors. The knowledge of the sorption–desorption chemistry of As in soil is necessary for predicting the fate and behavior of As in soil environments. Therefore, this study assessed different organic (sugarcane bagasse and vermicompost) and inorganic amendments (steel slag and fly ash) for their impact on sorption–desorption of As in texturally different contaminated soils (of sandy clay (SC) and sandy clay loam (SCL) texture) to understand the effect of amendments on As retention and mobility. The results showed that the sorption data fitted well with both Langmuir and Freundlich isotherm equations. The As sorption capacity was significantly enhanced with the application of all amendments. At 30 °C, the adsorption maxima (qmax) of SC soils enhanced to a greater extent following the order: steel slag (278 mg kg−1) > sugarcane bagasse (264 mg kg−1) > vermicompost (246 mg kg−1) > fly ash (242 mg kg−1). Whereas, in SCL, the order of qmax was steel slag (145 mg kg−1) > sugarcane bagasse (132 mg kg−1) > fly ash (120 mg kg−1) > vermicompost (118 mg kg−1). Desorption index (DI) was invariably to > 1 at both temperatures with the application of amendments indicating hysteretic desorption of As. The free energy change (ΔG°) was negative in all treatments and soils (indicating a favorable sorption process) with positive entropy change (ΔS°) values. The study recommends steel slag as the most effective amendment for enhancing As (V) retention in contaminated soils, due to its higher sorption capacity compared to other amendments like sugarcane bagasse, vermicompost, and fly ash. The amendments generally improved As sorption in both soils, reducing As mobility and potentially limiting its environmental spread.</div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 1","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Monitoring and Assessment","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s10661-024-13492-3","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

The retention and mobility of arsenic (As) in soil depend on various physical and chemical factors. The knowledge of the sorption–desorption chemistry of As in soil is necessary for predicting the fate and behavior of As in soil environments. Therefore, this study assessed different organic (sugarcane bagasse and vermicompost) and inorganic amendments (steel slag and fly ash) for their impact on sorption–desorption of As in texturally different contaminated soils (of sandy clay (SC) and sandy clay loam (SCL) texture) to understand the effect of amendments on As retention and mobility. The results showed that the sorption data fitted well with both Langmuir and Freundlich isotherm equations. The As sorption capacity was significantly enhanced with the application of all amendments. At 30 °C, the adsorption maxima (q_max) of SC soils enhanced to a greater extent following the order: steel slag (278 mg kg⁻¹) > sugarcane bagasse (264 mg kg⁻¹) > vermicompost (246 mg kg⁻¹) > fly ash (242 mg kg⁻¹). Whereas, in SCL, the order of q_max was steel slag (145 mg kg⁻¹) > sugarcane bagasse (132 mg kg⁻¹) > fly ash (120 mg kg⁻¹) > vermicompost (118 mg kg⁻¹). Desorption index (DI) was invariably to > 1 at both temperatures with the application of amendments indicating hysteretic desorption of As. The free energy change (ΔG°) was negative in all treatments and soils (indicating a favorable sorption process) with positive entropy change (ΔS°) values. The study recommends steel slag as the most effective amendment for enhancing As (V) retention in contaminated soils, due to its higher sorption capacity compared to other amendments like sugarcane bagasse, vermicompost, and fly ash. The amendments generally improved As sorption in both soils, reducing As mobility and potentially limiting its environmental spread.

查看原文本刊更多论文

有机和无机改进剂增强土壤砷固定化：来自吸附-解吸研究的见解

砷在土壤中的滞留和迁移取决于多种物理和化学因素。了解土壤中砷的吸附-解吸化学是预测土壤环境中砷的命运和行为所必需的。因此，本研究评估了不同有机（甘蔗渣和蚯蚓堆肥）和无机改良剂（钢渣和粉煤灰）在不同质地污染土壤（砂质粘土（SC）和砂质粘土壤土（SCL））中对As吸附-解吸的影响，以了解改良剂对As滞留和迁移的影响。结果表明，吸附数据符合Langmuir和Freundlich等温线方程。各改性剂对砷的吸附能力均有显著提高。在30℃时，SC土壤的最大吸附量（qmax）增大的顺序为：钢渣（278 mg kg - 1） >；蔗渣（264 mg kg - 1） >；蚯蚓堆肥（246 mg kg - 1） >；粉煤灰（242 mg kg - 1）。而在SCL中，qmax的顺序为钢渣（145 mg kg−1）>；蔗渣（132 mg kg−1）>；粉煤灰（120 mg kg−1）>；蚯蚓堆肥（118 mg kg−1）。在两个温度下，解吸指数（DI）都不变地为1，并应用了表明As的滞后性解吸的修正。所有处理和土壤的自由能变化（ΔG°）均为负，熵变（ΔS°）为正（表明吸附过程有利）。该研究建议，钢渣是增强污染土壤中砷(V)残留的最有效改良剂，因为与甘蔗渣、蚯蚓堆肥和粉煤灰等其他改良剂相比，钢渣的吸附能力更高。这些改进剂通常改善了两种土壤对砷的吸收，降低了砷的流动性，并可能限制其向环境扩散。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Environmental Monitoring and Assessment 环境科学-环境科学

CiteScore

4.70

自引率

6.70%

发文量

1000

审稿时长

7.3 months

期刊介绍： Environmental Monitoring and Assessment emphasizes technical developments and data arising from environmental monitoring and assessment, the use of scientific principles in the design of monitoring systems at the local, regional and global scales, and the use of monitoring data in assessing the consequences of natural resource management actions and pollution risks to man and the environment.