Department of Industry and Academy Collaborative Development, Xiamen University of Technology, 600 Ligong Road, Jimei District, Xiamen 361024, China.
Fujian Provincial Key Laboratory of Functional Materials and Applications, Institute of Advanced Energy Materials, School of Materials Science and Engineering, Xiamen University of Technology, 600 Ligong Road, Jimei, Xiamen 361024, China.
Int J Environ Res Public Health. 2018 Jan 31;15(2):239. doi: 10.3390/ijerph15020239.
Biosorption using agricultural wastes has been proven as a low cost and efficient way for wastewater treatment. Herein, grape peel treated by microwave- and conventional-hydrothermal processes was used as low cost biosorbent to remove methylene blue (MB) from aqueous solutions. The adsorption parameters including the initial pH value, dosage of biosorbents, contact time, and initial MB concentration were investigated to find the optimum adsorption conditions. The biosorbent obtained by microwave-hydrothermal treatment only for 3 min at 180 °C (microwave-hydrothermal treated grape peel, MGP) showed faster kinetics and higher adsorption capability than that produced by a conventional-hydrothermal process (hydrothermal treated grape peel, HGP) with a duration time of 16 h. The maximum adsorption capability of MGP under the optimum conditions (pH = 11, a dosage of 2.50 g/L) as determined with the Langmuir model reached 215.7 mg/g, which was among the best values achieved so far on biosorbents. These results demonstrated that the grape peel treated by a quick microwave-hydrothermal process can be a very promising low cost and efficient biosorbent for organic dye removal from aqueous solutions.
使用农业废料进行生物吸附已被证明是一种低成本、高效率的废水处理方法。在此，采用微波和常规水热处理的葡萄皮作为低成本生物吸附剂，从水溶液中去除亚甲基蓝（MB）。研究了吸附参数，包括初始 pH 值、生物吸附剂用量、接触时间和初始 MB 浓度，以找到最佳吸附条件。仅在 180°C 下微波水热处理 3 分钟（微波水热处理的葡萄皮，MGP）得到的生物吸附剂比常规水热处理（水热处理的葡萄皮，HGP）得到的生物吸附剂具有更快的动力学和更高的吸附能力，而常规水热处理的持续时间为 16 小时。在最佳条件（pH = 11，用量 2.50 g/L）下用 Langmuir 模型确定的 MGP 的最大吸附能力达到 215.7 mg/g，这是迄今为止在生物吸附剂上获得的最佳值之一。这些结果表明，用快速微波水热处理的葡萄皮可以作为一种很有前途的低成本、高效率的生物吸附剂，用于从水溶液中去除有机染料。
