数字农科院2.0

Development and Application of a Modified Biochar-Calcium Alginate Composite (MB-CA) for In Situ Remediation of Cadmium-Contaminated Soil

文献类型： 外文期刊

作者： Sun, Sijia;Wang, Yuying;Zhang, Yanru;Wu, Lina;Wang, Xinyi;Wang, Guoyu;Sun, Weitao;Lin, Dasong;Wang, Yajun

作者机构：

关键词： modified biochar;calcium alginate;Cd pollution;in situ passivation

期刊名称： GELS

ISSN：

年卷期： 2025 年 11 卷 5 期

页码：

收录情况： SCIE（2025版）

摘要： Agricultural monitoring reveals cadmium (Cd) as the most prevalent heavy metal pollutant in Chinese agricultural soils, with 7.0% of sampled sites exceeding the national soil environmental quality standard (GB 15618-2018), creating substantial risks for crop safety. In situ remediation is a cost-effective method that can modify the speciation and migration properties of Cd in soil. The previous stage of research studies conducted basic characterization of materials and predicted their adsorption capacity in solution environments. This study focuses on the application effects in soil environment. We cross-linked modified biochar and calcium alginate hydrogels to fabricate a composite material (MB-CA) and determined its excellent adsorption performance for cadmium. This study is a continuation of our previous work, focusing on determining the thermodynamic model of adsorption materials, the applicable environment of composite materials, the influence on soil microorganisms, and its effect on the reduction in Cd content in agricultural products. The research found that the adsorption of Cd2+ by MB-CA conforms to the Freundlich isotherm model. MB-CA has the ability to regulate pH, achieving outstanding adsorption capacity at pH 4-6. The effect of MB-CA on lettuce is verified through pot experiment and field experiment. The Cd2+ content in plants decreased by 63.11% and 76.92%, respectively. Additionally, MB-CA did not negatively impact microbial abundance. This study further discussed the performance and application effect of MB-CA, providing new solutions for soil remediation.

分类号：

  • 相关文献

[1]Study on Adsorption of Cd in Solution and Soil by Modified Biochar-Calcium Alginate Hydrogel. Wang, Shuyue,Wang, Yajun,Wang, Xinyi,Sun, Sijia,Zhang, Yanru,Jiao, Weixiong,Lin, Dasong. 2024

[2]Microencapsulation enhances the antifungal activity of cinnamaldehyde during the period of peanut storage. Chenxi Zhang,Lin Pan,Junning Ma,Qiang Yu,Xiaohua Yu,Sarfaraz Hussain,Xu Li,Yujie Li,Yue Guan,Yifei Li,Fuguo Xing. 2023

[3]Structural characterisation of two polysaccharides from white common bean (Phaseolus vulgaris L.) and the application in microencapsulation of probiotics. Zhu Y., Li J., Feng X., Shi Z., Yao Y., Shen R.. 2022

[4]Prediction of Excessive Cadmium in Rice Based on Weighted Bayesian Fusion Model. Zhang B.,Wang W.,An Y.,Jiao Y.,Li Y.. 2021

[5]Comparative effects of Tagetes patula L. extraction, mercapto-palygorskite immobilisation, and the combination thereof on Cd accumulation by wheat in Cd-contaminated soil. Yale Wang,Yingming Xu,Guohong Sun,Xuefeng Liang,Yuebing Sun,Lin Wang,Qingqing Huang. 2021

[6]Mercapto–palygorskite decreases the Cd uptake of wheat by changing Fe and Mn fraction in Cd contaminated alkaline soil. Yong Y.,Yang T.,Wang Y.,Xu Y.,Huang Q.,Liang X.,Sun Y.,Wang L.. 2024

[7]Ionomic analysis reveals the mechanism of mercaptosilane-modified palygorskite on reducing Cd transport from soil to wheat. Zhang, Yu,Xu, Yingming,Liang, Xuefeng,Wang, Lin,Sun, Yuebing,Huang, Qingqing,Qin, Xu. 2023

[8]Application of crop straw with different C/N ratio affects CH4 emission and Cd accumulation in rice (Oryza sativa L.) in Cd polluted paddy soils. Qiongli Bao,Jiahao Shi,Zewei Liu,Yundi Kan,Wankui Bao. 2025

[9]Effect of three aging processes on physicochemical and As(V) adsorption properties of Ce/Mn-modified biochar. Huang X.,Lyu P.,Li L.,Xie J.,Zhu C.. 2022

[10]Arsenic Adsorption On Layered Double Hydroxides Biochars And Their Amended Red And Calcareous Soils. Gao, X, Peng, YT, Guo, LL, Wang, Q, Guan, CY, Yang, F, Chen, Q. 2020

[11]Enhancing sorption of layered double hydroxide-based magnetic biochar for arsenic and cadmium through optimized preparation protocols. Peng Lyu,Lianfang Li,Jinli Huang,Jing Ye,Changxiong Zhu,Jinni Xie,Zihan Wang,Mengqi Kang,Ao Yan. 2023

[12]Arsenic Immobilization for Paddy Field and Improvement of Rice (Oryza sativa L.) Growth through Cerium–Manganese Modified Wheat Straw Biochar Application. Liang Ting,, Li LIanfang. 2023

[13]Magnetic biochar-supported layered double hydroxide for simultaneous remediation of As and Cd in soil: Effectiveness, retention durability, and insight into a new immobilization mechanism. Lyu P.,Li L.,Huang J.,Ye J.,Zhu C.. 2024

[14]Differentiated effects and mechanisms of N-, P-, S-, and Fe-modified biochar materials for remediating Cd- and Pb-contaminated calcareous soil. Amir Bostani,Xingying Meng,Le Jiao,Srđan D. Rončević,Peng Zhang,Hongwen Sun. 2025

[15]Impact of modified biochar on phosphorus fractionation and biochemical properties for different soils. Muhammad Numan Khan,Jing Huang,Asad Shah,Hao Xiaoyu,Tianfu Han,Avelino Núñez-Delgado,Nafiu Garba Hayatu,Imtiaz Ahmed,Wenjie Liu,Ashutosh Kumar Singh,Xiai Zhu,Huimin Zhang. 2025

[16]Functionalized biochar for enhancing the removal of antibiotics and resistance genes in swine manure composting: A review. Wang, Dong,Shi, Yulong,Zheng, Li,Liu, Yu,Wei, Xinyuan,Zhang, Qingwen. 2025

[17]Application of modified biochar in integrated pollution management for pesticides and antibiotics in water: Recent advances and future prospects. Wei Wang,Haojie Shi,Haoyu Shi,Zhentao Zhou,Liangang Mao,Lan Zhang,Lizhen Zhu,Chi Wu,Xingang Liu. 2025

作者其他论文 更多>>