Adsorption Properties of Phosphate by CaCl2-loaded Straw Microwave Charcoal  

作　　者：Jianliang ZHU Yonghong SHUI 

机构地区：[1]Zhejiang Institute of Communications,Hangzhou 311112,China [2]Chengdu Textile College,Chengdu 611731,China

出　　处：《Meteorological and Environmental Research》2023年第2期53-56,共4页气象与环境研究（英文版）

基　　金：Supported by the High-quality Ecological Restoration of Damaged Water Body;Vocational Education Personnel Training and Education and Teaching Reform Research Project of Sichuan Provincial Department of Education during2022-2024 (GZJG2022-014);Education and Teaching Research Project of Chengdu Textile College in 2022 (2022cdfzjj19)。

摘　　要：Phosphate is the main limiting factor of water eutrophication. In order to effectively control phosphorus pollution in water, straw microwave charcoal(CaCl2SBC) was prepared with straw after CaCl2activation and microwave biomass carbonization, and the adsorption effect of phosphate by CaCl2SBC was analyzed. The results showed that the prepared straw microwave charcoal contained hydroxyl and carbon-carbon double bonds, and CaCl2SBC had a very obvious adsorption effect on phosphate in eutrophic water. The optimum conditions for the adsorption of phosphate by CaCl2SBC are as follows: initial concentration of phosphate was 50 mg/L;adsorption time was 120 min;pH was 9;adsorption temperature was 25 ℃;CaCl2SBC dosage was 300 mg/L. Under the optimum conditions, the maximum removal rate can reach 99%. The prepared straw microwave charcoal can be used for phosphorus removal from eutrophic water.

关 键 词：Biomass charcoal PHOSPHATE ADSORPTION EUTROPHICATION 

分 类 号：X52[环境科学与工程—环境工程]