黑龙江科技大学学报2025，Vol.35Issue(2)：232-238,7.DOI:10.3969/j.issn.2095-7262.2025.02.010
DTAB-镧改性硅藻土的制备及其除磷性能
Preparation of DTAB-lanthanum modified diatomaceous earth and its phosphorus removal performance
刘彦飞 1马晓琳1
作者信息
- 1. 黑龙江科技大学 环境与化工学院,哈尔滨 150022
- 折叠
摘要
Abstract
This paper aims to investigate the phosphorus removal performanc of modified diatoma-ceous earth.The study conducts a modification on Lanthanum-modified diatomaceous earth by using N,N,N-trimethyl-1-dodecanaminium bromide(DTAB)oval performance of lanthanum-modified diatomite loaded with DTAB was significantly improved.and research its effects on the adsorption rate and phos-phorus removal.The results show that the surface roughness and the specific surface area of the lantha-num-modified diatomaceous earth increase by DTAB modified;and the adsorption equilibrium time is shortened from 12 hours to 8 hours with the increased adsorption rate by about 33.33%.DTAB-lantha-num-modified diatomaceous earth conforms to the characteristics behind the isothermal equation of Lang-muir adsorption,and the maximum theoretical equilibrium adsorption amount of 107.53 mg/g at 35℃.Under acidic conditions,the phosphorus removal effect of DTAB-lanthanum modified diatomite is better than that in alkaline environment with the phosphorus removal rates of DTAB-lanthanum modified diatom-ite by 95.4%and76.5%at pH=6 and pH=8,respectively,as which improves the phosphorus remov-al efficiency by 2.85%and 21.1%compared with that of lanthanum modified diatomite.The phosphorus removal performance of lanthanum-modified diatomite earth with loaded DTAB improves significantly.关键词
磷酸盐吸附/DTAB改性/硅藻土/除磷剂Key words
phosphate adsorption/DTAB modification/diatomaceous earth/phosphate remover分类
交通工程引用本文复制引用
刘彦飞,马晓琳..DTAB-镧改性硅藻土的制备及其除磷性能[J].黑龙江科技大学学报,2025,35(2):232-238,7.
