响应面法
砷
中心组合设计
水溶液
光催化
复合数
材料科学
催化作用
过程(计算)
化学工程
核化学
化学
色谱法
冶金
计算机科学
复合材料
有机化学
工程类
操作系统
作者
Behzad Rahimi,Afshin Ebrahimi
标识
DOI:10.1016/j.jtice.2019.04.036
摘要
A photocatalytic process was studied for total arsenic removal using an innovative BiVO4/TiO2/LED system from aqueous solution. Optimization of the experiments was also performed via response surface methodology (RSM). In this respect, characteristics of the catalysts were determined by XRD, FE-SEM, EDX, FT-IR, BET, and DRS spectra. Several catalysts were further compared and then the best and efficient photocatalyst for arsenic removal was selected using one-at-the-time experiments. The impacts of four variables were subsequently studied through designing experiments by central composite rotatable design (CCRD). Optimization of the process variables was also fulfilled and the effect of intervening factors on the given system was investigated using optimum conditions for maximum arsenic removal efficiency (99.97%) including initial arsenic concentration of 3 mg/L, initial pH by 4.5, reaction time of 120 min, and catalyst dosage by 0.2 g/100 mL. Thus, this innovative BiVO4/TiO2/LED system could be utilized as an effective way to remove arsenic-contaminated water.
科研通智能强力驱动
Strongly Powered by AbleSci AI