Evaluation Health Risks and Sorption of Hexavalent Chromium (Cr(VI) by Biochar and Iron Doped Zinc Oxide Modified Biochar (Fe-ZnO@BC) Using Trifolium: A Green Synthesis Technique

IF 2.7 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Bulletin of Environmental Contamination and Toxicology Pub Date : 2024-04-02 DOI:10.1007/s00128-024-03880-3

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Abstract

Contamination of aquatic and terrestrial environment with hexavalent chromium Cr(VI) is one of the major hazards worldwide due its carcinogenicity, persistency and immobility. Different research techniques have been adopted for Cr(VI) remediation present in terrestrial and aquatic media, while adsorption being the most advance, low cost, environmentally friendly and common method. The present study discussed the mechanisms of Parthenium hysterophorus derived biochar, iron-doped zinc oxide nanoparticles (nFe-ZnO) and Fe-ZnO modified biochar (Fe-ZnO@BC) involved in Cr(VI) mobility and bioavailability. Pot experiments were conducted to study the effect of Parthenium hysterophorus derived biochar, nFe-ZnO and Fe-ZnO@BC application rates (2%, 2 mg/kg, 10 mg/kg, respectively). The results indicated that the addition of soil amendments reduced Cr(VI) mobility. The findings revealed that the reduction in chromium mobility was observed by P. hysterophorus BC, and Fe-ZnO@BC but nFe-ZnO application significantly (p = 0.05) reduced Cr(VI) and Cr_T uptake as compared to the control treatments. The results of SEM coupled with EDS showed a high micropores and channel, smooth surface which helped in adsorption, and may enhance soil conditions. The concentration index (CI) by different amendments in trifolium plant was followed the descending order as: nFe-ZnO > Fe-ZnO@BC > P. hysterophorus BC after 30, 60 and 90 days of harvesting, respectively. In addition, human health risk index was found less than one (H1 < 1.0) in amended soils as compared to control treatments.

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生物炭和使用三叶草的掺铁氧化锌改性生物炭（Fe-ZnO@BC）对六价铬（Cr(VI)）健康风险和吸附性的评估：一种绿色合成技术

摘要由于六价铬具有致癌性、持久性和不流动性，它对水生和陆地环境的污染是全球主要危害之一。人们采用了不同的研究技术来修复陆地和水生介质中的六价铬，而吸附是最先进、低成本、环保和常用的方法。本研究讨论了蕨类植物衍生的生物炭、掺铁氧化锌纳米颗粒（nFe-ZnO）和Fe-ZnO改性生物炭（Fe-ZnO@BC）在六价铬迁移性和生物利用率方面的作用机制。盆栽实验研究了蕨类植物衍生生物炭、nFe-ZnO 和 Fe-ZnO@BC 施加率（分别为 2%、2 毫克/千克、10 毫克/千克）的影响。结果表明，添加土壤改良剂可降低六价铬的迁移率。研究结果表明，与对照处理相比，施用 P. hysterophorus BC 和 Fe-ZnO@BC（但施用 nFe-ZnO（p = 0.05）可显著减少铬（VI）和 CrT 的吸收）可降低铬的迁移率。扫描电子显微镜（SEM）和电致发光（EDS）的结果表明，氧化锌具有较多的微孔和通道，表面光滑，有助于吸附，并可改善土壤条件。收获 30、60 和 90 天后，不同添加剂在三叶草植物中的浓度指数（CI）从高到低依次为：nFe-ZnO > Fe-ZnO@BC > P. hysterophorus BC。此外，与对照处理相比，发现改良土壤中的人类健康风险指数小于 1（H1 <1.0）。

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来源期刊

Bulletin of Environmental Contamination and Toxicology 环境科学-毒理学

CiteScore

5.60

自引率

3.70%

发文量

230

审稿时长

1.7 months

期刊介绍： The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.