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IF 7.6 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution Pub Date : 2024-12-16 DOI:10.1016/j.envpol.2024.125551

Yi Wu, Zongwei Wang, Ziyu Xue, Yuhang Yan, Bushra Huma, Yuqian Zhou, Zhongxin Tan

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引用次数: 0

摘要

潜在有毒元素（PTEs）是农田中广泛存在的污染物，在降低其浓度的同时对维护土壤生态功能提出了巨大挑战。本研究详细介绍了一种可重复使用的高强度硅酸盐磁性复合生物炭球（SMBCS）的开发过程，该球由天然矿物和生物炭合成，具有优异的磁性和吸附性。在连续三个修复周期中使用 SMBCS 后，土壤中的镉（Cd）、铅（Pb）和砷（As）浓度分别降低了 28.6%、26.6% 和 42.9%，生物利用率也相应降低了 52.7%、49.4% 和 39.4%。在修复土壤中培育的水稻秧苗中，镉、铅和砷的累积量分别减少了 79.50%-85.47%、38.05%-38.99% 和 39.56%-77.10%。然而，土壤中必需矿质营养元素（Al、Fe、K、Ca、Mg、Si、N、Zn、Mn 和 Cu）的去除率在 3.26% 至 36.28% 之间，这对种子发芽和水稻秧苗生长造成了不利影响。在播种前施用稻草（RS）、猪粪（PM）、生物炭（RSB 和 PMB）和再生 SMBCS（RSMBCS1 和 RSMBCS2）可有效减少镉（0.20-45.40%）和铅（8.70-35.36%）的吸收，同时提高矿质营养元素的生物利用率，从而促进作物生长和生理性状。SMBCS 施肥技术是去除农业土壤中 PTEs 的可行方法，有利于恢复生态功能，确保农业安全生产。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Fertilization of potentially toxic element-contaminated soils remediated with reusable biochar pellets using rice straw, pig manure and their derived biochar

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Fertilization of potentially toxic element-contaminated soils remediated with reusable biochar pellets using rice straw, pig manure and their derived biochar

Potentially toxic elements (PTEs) are widespread pollutants in agricultural fields, presenting significant challenges to the maintenance of soil ecological functions while simultaneously reducing their concentrations. This study detailed the development of a high-strength reusable silicate magnetic composite biochar sphere (SMBCS) characterized by superior magnetic and adsorption properties, synthesized from natural minerals and biochar. The application of SMBCS over three consecutive remediation cycles led to reductions in cadmium (Cd), lead (Pb), and arsenic (As) concentrations in soil by 28.6%, 26.6%, and 42.9%, respectively, accompanied by corresponding decreases in bioavailability of 52.7%, 49.4%, and 39.4%. The accumulation of Cd, Pb, and As in rice seedlings cultivated in the remediated soil decreased by 79.50-85.47%, 38.05-38.99%, and 39.56-77.10%, respectively. However, the removal of essential mineral nutrients (Al, Fe, K, Ca, Mg, Si, N, Zn, Mn, and Cu) from the soil ranged from 3.26% to 36.28%, which adversely affected seed germination and rice seedling growth. Pre-planting fertilization with rice straw (RS), pig manure (PM), biochar (RSB and PMB), and regenerated SMBCS (RSMBCS1 and RSMBCS2) effectively reduced Cd (0.20-45.40%) and Pb (8.70-35.36%) uptake while enhancing the bioavailability of mineral nutrients, thereby promoting crop growth and physiological traits. The SMBCS-fertilization technique emerges as a viable approach for the removal of PTEs in agricultural soils, facilitating the restoration of ecological functions and ensuring safe agricultural production.

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来源期刊

Environmental Pollution 环境科学-环境科学

CiteScore

16.00

自引率

6.70%

发文量

2082

审稿时长

2.9 months

期刊介绍： Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health. Subject areas include, but are not limited to: • Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies; • Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change; • Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects; • Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects; • Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest; • New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.