Mitigating arsenic accumulation in rice (Oryza sativa L.) using Fe-Mn-La-impregnated biochar composites in arsenic-contaminated paddy soil

Lin, Lina; Gao, Minling; Song, Zhengguo; Mu, Haiyan

doi:10.1007/s11356-020-10083-w

Cited by 20 publications

(3 citation statements)

References 43 publications

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“…The results indicated that the translocation of heavy metals from roots to shoots decreased by 10% to 50%, while plant biomass increased by 10% to 40% [62]. In another study, Li et al (2020) [67] inoculated intestinal bacteria into water pepper (Polygonum hydropiper L.) and pale smartweed (Polygonum lapathifolium L.), which grew in soils co-contaminated with As and Cd. This approach enhanced the plants' antioxidant enzyme activity, alleviating As and Cd stress and thus improving their remediation efficiency.…”

Section: Enhancement Measures For Phytoremediationmentioning

confidence: 97%

“…Chemical immobilization technology involves adding chemical amendments to contaminated soil to transform mobile pollutants into precipitates or strongly adsorbed states, thereby reducing their bioavailability in the soil [20]. Some amendments have a strong immobilizing effect on As and Cd, such as 10% iron hydroxyapatite and iron sulfate, which can reduce As by 69% and 64.0%, respectively, and Cd by 44% and 98.4%, respectively [68].…”

Section: Chemical Immobilization Remediation For As and CD Co-contami...mentioning

confidence: 99%

“…Among these, phytoremediation involves utilizing plants' abilities to absorb, transport, accumulate, or degrade pollutants to reduce pollutant concentrations in soil [19]. Chemical immobilization involves the application of amendments to contaminated soil, altering the chemical forms or states of As and Cd [20][21][22][23]. However, achieving collaborative remediation of both As and Cd through these methods remains challenging [24].…”

Section: Introductionmentioning

confidence: 99%

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Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Lin,

Ma,

Liu

et al. 2024

Sustainability

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The concurrent presence of arsenic (As) and cadmium (Cd) contamination in soil is widespread and severe, highlighting the need for remediation. However, remediating As and Cd co-contaminated soils is more complex than remediating soils contaminated with a single heavy metal due to the opposite properties of As and Cd in soil. Thus, the different forms of As and Cd in co-contaminated soils and their transformation rules have been systematically reviewed in this paper. Simultaneously, hyperaccumulators and immobilization amendments used in the remediation of As–Cd co-contaminated soil were reviewed. Moreover, the mechanisms of phytoremediation and chemical immobilization techniques in the treatment of As and Cd co-contaminated soil and the remediation effects were expounded in detail. To promote the development of ecological civilization, this paper proposes further remediation strategies and guidance for the remediation of As–Cd co-contaminated soil.

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Section: Enhancement Measures For Phytoremediationmentioning

confidence: 97%

Section: Chemical Immobilization Remediation For As and CD Co-contami...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Lin,

Ma,

Liu

et al. 2024

Sustainability

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Meta-Analysis of Biochar as an Amendment for Arsenic Mitigation in Paddy Soils

Mandal,

Sharma,

Mondal

et al. 2024

Curr Pollution Rep

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Purpose of Review The purpose of this review is to evaluate the effectiveness of biochar in immobilizing arsenic (As) in contaminated paddy soils and its impact on As availability and bioaccumulation in rice, as well as rice plant biomass. Recent Findings Recent studies have focused on managing As contamination in agricultural fields, with a particular focus on South and Southeast Asia, where rice, a primary food source and As accumulator, is of significant concern. Biochar, a product of biomass pyrolysis, has emerged as a viable solution for environmental remediation due to its effectiveness in immobilizing metal(loid)s in water and soil. The successful implementation of biochar as a soil amendment strategy has led to growing interest in its use as an effective means of reducing the bioaccumulation and availability of metal(loid)s, including As. Summary A meta-analysis of 25 studies revealed that biochar generated from maize and sewage sludge successfully reduced As availability and bioaccumulation in rice grains. In addition, the use of biochar led to higher biomass and yield of rice crops compared to control groups. Modified biochar was more effective in decreasing As availability, likely due to interactions with iron and calcium phases or complexes occurring in or on the biochars. Nevertheless, at elevated biochar dosages, As mobilization was noted in field conditions which warrants further investigation.

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