印染助剂2025，Vol.42Issue(3)：50-55,6.
磷酸改性稻壳灰对亚甲基蓝的吸附性能
Adsorption performance of phosphate modified rice husk ash on methylene blue
摘要
Abstract
For the treatment of printing and dyeing wastewater,rice husk carbon was modified with phos-phoric acid.After a series of comparison,it was determined that the modified carbon with a mass ratio of phos-phoric acid to rice husk carbon of 2∶1 had the best adsorption effect on methylene blue.The results showed that the optimal adsorption conditions were as follows:MB initial mass concentration 80 mg/L,carbon dosage 10 mg,adsorption time 320 min,the maximum adsorption capacity was 100.68 mg/g,the maximum removal rate of MB was 25.29%.The adsorption process conforms to the Langmuir isothermal adsorption model and the quasi-second-order kinetic equation,which indicated that the adsorption method of MB by rice husk bio-char was single molecular layer chemisorption.The above results were verified by response surface experi-ment.After optimization,the optimal combination was as follows:MB initial mass concentration 100 mg/L,car-bon dosage 15 mg,adsorption time 320 min.The adsorption capacity of the combination was 174.54 mg/g.关键词
吸附/稻壳灰/磷酸改性/亚甲基蓝Key words
adsorption/rice husk ash/phosphate modified/methylene blue分类
环境科学引用本文复制引用
李咨萱,芦欣禹,王凯玲,李小敏..磷酸改性稻壳灰对亚甲基蓝的吸附性能[J].印染助剂,2025,42(3):50-55,6.基金项目
伊犁师范大学科研创新团队培育项目(CXZK2021024) （CXZK2021024）
