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Use of plant-based sorbents and mycodegradation for the elimination of endocrine disrupting chemicals from soil: A novel facile and low-cost method
Environmental Technology & Innovation ( IF 7.1 ) Pub Date : 2021-01-06 , DOI: 10.1016/j.eti.2021.101358
Elisabetta Loffredo , Marco Parlavecchia

Soil contamination is a worldwide emergency that requires prompt, economical and eco-compatible solutions. This work explored an innovative approach consisting of sequential adoption of plant-based adsorbents and mycodegradation to remediate a multi-contaminated soil. Wood biochar (BC) and hydrochar (HC) samples, and spent coffee grounds (CG) were used to remove from the soil two well-known endocrine disrupting chemicals (EDCs), 4-tert-octylphenol (OP) and bisphenol A (BPA), and two suspected EDCs, the fungicide boscalid and the herbicide metribuzin, each at a concentration of 1 mg L−1. The adsorbents were spread on a layer of tissue–non-tissue and overlaid to the soil. After 2, 4 and 7 d of exposure to the polluted soil, the adsorbents were removed. The percentages of OP, BPA, boscalid and metribuzin adsorbed in just 2 d onto BC were, respectively, 80, 62, 34 and 50%. whereas they were lower on HC and much lower on CG. At the two successive times, the amounts of EDCs removed increased, following the same trend OP > BPA > metribuzin > boscalid for all materials and all samplings. The materials removed from the soil after 7 d were inoculated with the fungi Trametes versicolor and Pleurotus eryngii, separately, and incubated for 7 and 14 days. After 7 d, the maximum degradation was observed for OP in any material, being averagely 70 and 74% by T. versicolor and P. eryngii, respectively. After 14 d, averagely, and with slight differences among treatments, P. eryngii degraded 83, 75, 68 and 63% of OP, BPA, boscalid and metribuzin, respectively, while T. versicolor was slightly less effective. Plant assays clearly showed a noticeable reduction of soil phytotoxicity after the remediation treatment with the adsorbents, especially BC. The overall results obtained encourage to study in deep this strategy that allows both the remediation of soil and the elimination of pollutants with a very facile and inexpensive procedure.



中文翻译:

使用植物性吸附剂和mycodegradation消除土壤中破坏内分泌的化学物质:一种新颖且低成本的方法

土壤污染是全球性的紧急情况,需要迅速,经济和生态兼容的解决方案。这项工作探索了一种创新的方法,该方法包括依次采用基于植物的吸附剂和mycodegradation来修复多污染土壤。使用木材生物炭(BC)和水焦炭(HC)样品以及废咖啡渣(CG)从土壤中去除两种著名的内分泌干扰物(EDC),4-叔辛基苯酚(OP)和双酚A(BPA) ),以及两个可疑的EDC,分别是杀菌剂Boscalid和除草剂美克津,浓度分别为1 mg L -1。吸附剂散布在非组织的一层上,并覆盖在土壤上。在暴露于污染土壤的第2、4和7天后,吸附剂被去除。在短短2 d内吸附到BC的OP,BPA,boscalid和metribuzin的百分比分别为80%,62%,34%和50%。而它们的HC较低,而CG较低。在所有连续的两个时间里,所有材料和所有采样的EOP趋势> BPA> metribuzin> boscalid趋势都保持不变。7天后从土壤中除去的物质分别用云芝Trametes杏鲍菇Pleurotus eryngii)接种,并孵育7天和14天。7 d后,在任何材料中观察到OP的最大降解,平均降解率分别为70%和74%。分别是杂色丁香扁桃丁香。14 d后,平均而言,紫杏假单胞菌分别降解了OP,BPA,boscalid和metribuzin的83%,75%,68%和63%,而杂色青蒿的效果稍差。植物试验清楚地表明,用吸附剂(尤其是BC)进行修复处理后,土壤植物毒性显着降低。所获得的总体结果鼓励深入研究该策略,该策略可以通过非常简便且廉价的方法进行土壤修复和污染物消除。

更新日期:2021-01-11
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