Exploring the potential of green-synthesized hydroxyapatite for cadmium remediation in paddy soils

IF 6.2 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Ecotoxicology and Environmental Safety Pub Date : 2025-05-03 DOI:10.1016/j.ecoenv.2025.118267

Yubo Yan , Meng Du , Zhiwen Song , Qiao Li , Muhammad Faheem , Xiaoxin Zhang , Yuanxin Cao , Zhijie Zhang , Zhe Zhang , Shouyong Zhou

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引用次数: 0

Abstract

The Cadmium contamination in paddy soils significantly threatens soil health and food safety. This study addresses the urgent need for cost-effective and sustainable remediation methods by evaluating the efficacy of green-synthesized hydroxyapatite (GHAP) in immobilizing Cd in paddy soils. The investigation focused on the effects of applying GHAP, commercial hydroxyapatite (CHAP), and pure hydroxyapatite (CK) on soil physicochemical properties, as well as Cd mobility and transfer within the soil-rice system. Our results demonstrate that GHAP significantly enhanced Cd adsorption and reduced bioavailable Cd content by up to 48.47 %, with the most effective results observed at a 1 % amendment rate. Additionally, GHAP application elevated soil pH and available phosphorus, contributing to better soil structure, fertility, and rice growth. Correlation and principal component analyses revealed that the GHAP dosage was a key factor in modifying soil properties and influencing Cd speciation and mobility. These findings suggest that a 1 % GHAP dosage achieves an optimal balance between improving soil quality and effectively passivating Cd, making GHAP a promising amendment for remediating Cd-contaminated soils.

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探索绿色合成羟基磷灰石在水稻土镉修复中的潜力

水稻土中的镉污染严重威胁着土壤健康和食品安全。本研究通过评价绿色合成羟基磷灰石（GHAP）对水稻土中镉的固定化效果，探讨了对经济、可持续修复方法的迫切需求。研究了施用GHAP、商品羟基磷灰石（CHAP）和纯羟基磷灰石（CK）对土壤理化性质以及镉在土壤-水稻系统内的迁移和转移的影响。我们的研究结果表明，GHAP显著增强了Cd吸附，降低了高达48.47 %的生物可利用Cd含量，在1 %的修正率下观察到最有效的结果。此外，施用GHAP提高了土壤pH值和有效磷，有助于改善土壤结构、肥力和水稻生长。相关分析和主成分分析表明，GHAP用量是改变土壤性质、影响Cd形态和迁移的关键因素。这些结果表明，1 %的GHAP用量在改善土壤质量和有效钝化Cd之间达到了最佳平衡，使GHAP成为修复Cd污染土壤的一种有前景的改良剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ecotoxicology and Environmental Safety 环境科学-毒理学

CiteScore

12.10

自引率

5.90%

发文量

1234

审稿时长

88 days

期刊介绍： Ecotoxicology and Environmental Safety is a multi-disciplinary journal that focuses on understanding the exposure and effects of environmental contamination on organisms including human health. The scope of the journal covers three main themes. The topics within these themes, indicated below, include (but are not limited to) the following: Ecotoxicology、Environmental Chemistry、Environmental Safety etc.