摘要
以改性粉煤灰为吸附剂处理含铬废水,考察了不同质量分数氢氧化钠改性粉煤灰对铬的吸附性能。结果表明,使用20%氢氧化钠改性的粉煤灰对10 mg/L的含铬废水进行处理,吸附时间为120 min,室温下,铬吸附量可达0.177 mg/g。指出氢氧化钠改性粉煤灰吸附铬属于物理吸附,并且符合二级反应动力学方程。
Chrome containing wastewater was treated with modified pulverized coal ash as the adsorbent, and the performance of sodium hydroxide modified pulverized coal ash of different mass fractions for adsorbing chrome was studied. The results have shown that the chrome adsorbance can reach 0. 177 mg/g when 20% sodium hydroxide modified pulverized coal ash is used to treat the chrome containing wastewater of the concen- tration of 10 mg/L for 120 min at normal room temperature. The adsorption of sodium hydroxide modified pul-verized coal ash is a kind physical adsorption in accordance with the kinetic equation of second order reaction.
出处
《精细石油化工进展》
CAS
2011年第4期35-37,共3页
Advances in Fine Petrochemicals
关键词
粉煤灰
氢氧化钠
改性
含铬废水
吸附
pulverized coal ash
sodium hydroxide
modification
chrome containing wastewater
adsorption
