Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, PR China.
Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, PR China.
Chemosphere. 2020 Dec;260:127668. doi: 10.1016/j.chemosphere.2020.127668. Epub 2020 Jul 13.
A series of pollutants can be removed from soil using a Fenton-like oxidation and biological treatment. As a natural mineral, tourmaline has been used for as a material of Fenton-like reaction. In the present study, the risks of remediation technology tourmaline catalyzed Fenton-like reaction (TCFR) combined with Phanerochaete chrysosporium (TCFR + P) were assessed through measuring soil properties, physiological response of plant, and PBDEs migration from soil to plant. Batch pot experiments showed that the silicon contents, specific surface area and soil pore size of soil in TCFR and 5%TCFR + P groups increased obviously. TCFR and TCFR + P treatments promoted the lettuce growth compared to control. Moreover, chlorophyll content of lettuce in 2%TCFR + P and 5%TCFR + P group increased by 46.74% and 44.57% than that in the CK, respectively. The treatment of 2%TCFR decreased the total concentration of PBDEs in rhizosphere soil and non-rhizosphere soil by 52.0.2% and 64.17%, respectively, after 60 days compared to the soil of CK, and did not prompt the uptake of lower-brominated PBDEs by lettuce. TCFR and TCFR + P can alter the migration of BDE isomers from soil to plant, the ratio of BDE99/BDE100 in lettuce shoots decreased slightly. BDE-99/BDE-100 ratios in the shoots were lower than those in the roots, while BDE153/BDE154 ratios were higher than 1.0 and ratios in shoots were higher than those in roots. Therefore, our findings illustrated that the TCFR could be applied to remediate the agricultural soil, considering the appropriate doses of tourmaline.
一系列污染物可以使用芬顿样氧化和生物处理从土壤中去除。作为一种天然矿物，电气石已被用作芬顿样反应的材料。在本研究中，通过测量土壤性质、植物生理反应和 PBDEs 从土壤向植物的迁移，评估了修复技术电气石催化芬顿样反应（TCFR）与黄孢原毛平革菌（TCFR+P）组合的风险。批量盆栽实验表明，TCFR 和 5%TCFR+P 组土壤的硅含量、比表面积和土壤孔径明显增加。与对照相比，TCFR 和 TCFR+P 处理促进了生菜的生长。此外，2%TCFR+P 和 5%TCFR+P 组生菜叶片中的叶绿素含量比 CK 分别增加了 46.74%和 44.57%。与 CK 相比，60 天后 2%TCFR 处理使根际和非根际土壤中 PBDEs 的总浓度分别降低了 52.0.2%和 64.17%，但没有促使生菜吸收更多的低溴代 PBDEs。TCFR 和 TCFR+P 可以改变 BDE 同系物从土壤向植物的迁移，生菜茎叶中 BDE99/BDE100 的比例略有下降。BDE-99/BDE-100 比例在茎中低于根中，而 BDE153/BDE154 比例高于 1.0，且茎中的比例高于根中。因此，我们的研究结果表明，考虑到电气石的适当剂量，TCFR 可用于修复农业土壤。
