微波辅助酸改性粉煤灰处理含砷废水

Treatment of Arsenic-containing Wastewater with Microwave-assisted Acid Modified Fly-ash

以浓度1.0mol.L-1的硫酸为改性剂,微波辅助制备酸改性粉煤灰吸附剂.通过SEM,FTIR对粉煤灰微观形貌观察及结构表征,用分光光度法对其吸附性能进行分析,结果表明:用硫酸用量为4g.mL-1、微波功率400W、微波时间8min时制得的酸改性粉煤灰来处理含砷废水,常温下,当吸附剂用量10g.L-1,废水pH=6,吸附时间30min时,砷的脱除率可达90.29%.

Acid modified fly ash was prepared through microwave-assisted with 1.0 moL·L-1 sulfuric acid.We observe its microstructure by SEM and FTIR to its structure and index and aualyze of the adsorption performance by spectrophotometry.The result shows that：under the modified conditions with the dosage of sulphate acid 4 mL·g-1,microwave power 400 W,modification time 8 min and with the adsorption conditions of the mass of adsorbent 10 g·L-1,waste water pH=6,adsorption time 30 min,temperature 25 ℃,the removal rate of arsenic reach to 90.29%.