Lu Li, Li Anan, Ji Xueqin, Yang Chunping, He Shanying
Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University Hangzhou 310018 China
College of Environmental Science and Engineering, Hunan University Changsha 410082 China.
RSC Adv. 2018 Jun 27;8(41):23426-23432. doi: 10.1039/c8ra03529f. eCollection 2018 Jun 21.
By adding the nonionic surfactant Triton X-100 and using biochar as an immobilization carrier, a Triton X-100-facilitated biochar-immobilized (TFBIP) material was prepared using the sorption method and was used to treat acenaphthene in water. The results showed that a low concentration of Triton X-100 simultaneously promoted the sorption capacity of the biochar and the degradation activity of , thereby significantly enhancing the removal of acenaphthene from water by the immobilized material. Compared with the control without Triton X-100, a low concentration of Triton X-100 significantly increased the acenaphthene removal rate by 20-50%. The optimal conditions for preparing the TFBIP were a loading time of 24 h, the use of a bacterial suspension with a concentration of OD = 0.2, and a Triton X-100 concentration of 10 mg L. The optimized TFBIP material could efficiently remove acenaphthene from water at temperatures of 10-50 °C, pH values of 4.5-10.5, and NaCl concentrations of up to 0.2 mol L. The new TFBIP material can be used for the treatment of wastewater and may also be directly used for the remediation of soils contaminated with organic pollutants.
通过添加非离子表面活性剂吐温X - 100并使用生物炭作为固定化载体，采用吸附法制备了吐温X - 100促进的生物炭固定化（TFBIP）材料，并用于处理水中的苊。结果表明，低浓度的吐温X - 100同时促进了生物炭的吸附能力和[具体物质]的降解活性，从而显著提高了固定化材料对水中苊的去除效果。与未添加吐温X - 100的对照相比，低浓度的吐温X - 100显著提高了苊的去除率20 - 50%。制备TFBIP的最佳条件为负载时间24 h、使用浓度为OD = 0.2的细菌悬浮液以及吐温X - 100浓度为10 mg/L。优化后的TFBIP材料在10 - 50℃、pH值4.5 - 10.5以及NaCl浓度高达0.2 mol/L的条件下能够有效去除水中的苊。这种新型TFBIP材料可用于废水处理，也可直接用于修复受有机污染物污染的土壤。
