Impacts of the combined application of digestate-based compost and biochar on the heavy metal Cd distribution and stress in the plant-soil system

IF 3.7 3区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biochemical Engineering Journal Pub Date : 2025-05-08 DOI:10.1016/j.bej.2025.109773

Feng Zhen , Hengbing Zhou , Linpei Han , Yifan Zhang , Yuwan Pang , Tao Xing , Lei Li

{"title":"Impacts of the combined application of digestate-based compost and biochar on the heavy metal Cd distribution and stress in the plant-soil system","authors":"Feng Zhen , Hengbing Zhou , Linpei Han , Yifan Zhang , Yuwan Pang , Tao Xing , Lei Li","doi":"10.1016/j.bej.2025.109773","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, a pot experiment was conducted to evaluate the effects of digestate-based compost, chemical fertilizer, and their combination with biochar on heavy metal distribution, plant growth, and soil microbial communities. The experimental results demonstrated that the combined application of digestate-based compost and biochar (OFB group) promoted heavy metal immobilization in soil and enhanced plant growth, while reducing the accumulation of heavy metals in plants. Oxidizable and residual Cd levels in the OFB group increased by 14.90 % and 17.60 % compared to the control group. The biomass of Chinese cabbage was 384 % higher than that of the control group, and its Cd content decreased by 57.90 % compared to the control group. The addition of digestate-based compost to the soil increased soil organic matter, total nitrogen, total phosphorus, total potassium, and electrical conductivity (p < 0.05), along with the relative abundance of beneficial microorganisms such as <em>Bacillus</em>, <em>norank_f__norank_o__Actinomarinales</em>, <em>Chryseolinea</em>, <em>Saccharomonospora</em>, <em>Pseudomonas,</em> and <em>norank_f__BIrii41</em>. Biochar played a significant role in minimizing the migration of heavy metals to plants. The study demonstrated that the combined application of digestate-based compost and biochar reduces heavy metal stress, enhances soil fertility, and promotes biomass growth, offering potential solutions for the sustainable management of cadmium-contaminated soil and the application of digestate-based compost.</div></div>","PeriodicalId":8766,"journal":{"name":"Biochemical Engineering Journal","volume":"221 ","pages":"Article 109773"},"PeriodicalIF":3.7000,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1369703X25001470","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

In this study, a pot experiment was conducted to evaluate the effects of digestate-based compost, chemical fertilizer, and their combination with biochar on heavy metal distribution, plant growth, and soil microbial communities. The experimental results demonstrated that the combined application of digestate-based compost and biochar (OFB group) promoted heavy metal immobilization in soil and enhanced plant growth, while reducing the accumulation of heavy metals in plants. Oxidizable and residual Cd levels in the OFB group increased by 14.90 % and 17.60 % compared to the control group. The biomass of Chinese cabbage was 384 % higher than that of the control group, and its Cd content decreased by 57.90 % compared to the control group. The addition of digestate-based compost to the soil increased soil organic matter, total nitrogen, total phosphorus, total potassium, and electrical conductivity (p < 0.05), along with the relative abundance of beneficial microorganisms such as Bacillus, norank_f__norank_o__Actinomarinales, Chryseolinea, Saccharomonospora, Pseudomonas, and norank_f__BIrii41. Biochar played a significant role in minimizing the migration of heavy metals to plants. The study demonstrated that the combined application of digestate-based compost and biochar reduces heavy metal stress, enhances soil fertility, and promotes biomass growth, offering potential solutions for the sustainable management of cadmium-contaminated soil and the application of digestate-based compost.

查看原文本刊更多论文

沼液堆肥与生物炭配施对植物-土壤系统重金属Cd分布及胁迫的影响

通过盆栽试验，研究了沼液堆肥、化肥及其与生物炭的配施对土壤重金属分布、植物生长和土壤微生物群落的影响。试验结果表明，沼液堆肥与生物炭（OFB组）配合施用可促进土壤中重金属的固定化，促进植物生长，同时减少植物体内重金属的积累。与对照组相比，OFB组的氧化镉和残留镉水平分别增加了14.90 %和17.60 %。大白菜生物量比对照组提高384 %，Cd含量比对照组降低57.90 %。在土壤中添加以消化物为基础的堆肥增加了土壤有机质、全氮、全磷、全钾和电导率（p <； 0.05），并增加了有益微生物如芽孢杆菌、norank_f_ norank_o_放线菌、Chryseolinea、Saccharomonospora、Pseudomonas和norank_f_ birii41的相对丰度。生物炭在减少重金属向植物的迁移方面发挥了重要作用。研究表明，沼渣堆肥与生物炭复合施用可降低重金属胁迫，提高土壤肥力，促进生物质生长，为镉污染土壤的可持续管理和沼渣堆肥的应用提供了潜在的解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Biochemical Engineering Journal 工程技术-工程：化工

CiteScore

7.10

自引率

5.10%

发文量

380

审稿时长

34 days

期刊介绍： The Biochemical Engineering Journal aims to promote progress in the crucial chemical engineering aspects of the development of biological processes associated with everything from raw materials preparation to product recovery relevant to industries as diverse as medical/healthcare, industrial biotechnology, and environmental biotechnology. The Journal welcomes full length original research papers, short communications, and review papers* in the following research fields: Biocatalysis (enzyme or microbial) and biotransformations, including immobilized biocatalyst preparation and kinetics Biosensors and Biodevices including biofabrication and novel fuel cell development Bioseparations including scale-up and protein refolding/renaturation Environmental Bioengineering including bioconversion, bioremediation, and microbial fuel cells Bioreactor Systems including characterization, optimization and scale-up Bioresources and Biorefinery Engineering including biomass conversion, biofuels, bioenergy, and optimization Industrial Biotechnology including specialty chemicals, platform chemicals and neutraceuticals Biomaterials and Tissue Engineering including bioartificial organs, cell encapsulation, and controlled release Cell Culture Engineering (plant, animal or insect cells) including viral vectors, monoclonal antibodies, recombinant proteins, vaccines, and secondary metabolites Cell Therapies and Stem Cells including pluripotent, mesenchymal and hematopoietic stem cells; immunotherapies; tissue-specific differentiation; and cryopreservation Metabolic Engineering, Systems and Synthetic Biology including OMICS, bioinformatics, in silico biology, and metabolic flux analysis Protein Engineering including enzyme engineering and directed evolution.