Assessment of interactive effects of sophorolipids and pine needle biochar augmentation in the process of phytoremediation of Cd contaminated soil using response surface methodology

IF 4.1 2区 环境科学与生态学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY International Biodeterioration & Biodegradation Pub Date : 2024-10-07 DOI:10.1016/j.ibiod.2024.105936
Vijendra Shah , Achlesh Daverey
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Abstract

In present study, response surface methodology (RSM) based central composite design (CCD) was used to study the interactive effect between two individual soil amendments, sophorolipids (SLs) and pine needle biochar for the phytoremediation of Cd contamination and enzymatic activity of soil. The experimented concentrations of SLs and biochar ranged from 0.5 to 2.6 g/kg and 0.4–1.8 %, respectively. The SLs and biochar at the concentration 1.1 g/kg and 1.55 % respectively exhibit the maximum uptake in shoot (125.33 mg/kg) and root (298.27 mg/kg). The results also showed higher R2 (>0.9) for Cd uptake in B. pilosa and R2 (>0.85) for soil enzymatic activity using model generated by CCD of RSM. These results signify the reliability of the model and suggested that this model could be used for the prediction of increased metal uptake by plants. The optimum concentrations of SLs and biochar predicted by the CCD were 1.23 g/kg and 1.55 %, respectively with desirability score of 1 for the uptake of Cd in B. pilosa. The results highlighted that application of these amendments can be a pivotal step in the direction of remediation of heavy metal contamination from soil at larger scale.

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利用响应面方法评估槐脂和松针生物炭增量在镉污染土壤植物修复过程中的交互效应
本研究采用基于响应面方法(RSM)的中央复合设计(CCD),研究了槐脂类(SLs)和松针生物炭这两种土壤改良剂在植物修复镉污染和土壤酶活性方面的交互作用。试验中,松针磷脂和生物炭的浓度分别为 0.5 至 2.6 克/千克和 0.4 至 1.8%。浓度分别为 1.1 g/kg 和 1.55 % 的可溶性螯合态氮和生物炭在嫩枝(125.33 mg/kg)和根(298.27 mg/kg)中的吸收量最大。结果还显示,使用 RSM 的 CCD 生成的模型,B. pilosa 对镉吸收的 R2(>0.9)和土壤酶活性的 R2(>0.85)较高。这些结果表明了该模型的可靠性,并表明该模型可用于预测植物对金属吸收的增加。根据 CCD 预测,SLs 和生物炭的最佳浓度分别为 1.23 克/千克和 1.55%,对 B. pilosa 吸收镉的可取性得分为 1。研究结果表明,这些改良剂的应用是大规模修复土壤重金属污染的关键一步。
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来源期刊
CiteScore
9.60
自引率
10.40%
发文量
107
审稿时长
21 days
期刊介绍: International Biodeterioration and Biodegradation publishes original research papers and reviews on the biological causes of deterioration or degradation.
期刊最新文献
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