摘要
为了开发新型、高效、廉价的吸附材料,将海泡石原矿进行提纯、酸化、钠交换预处理,再通过有机活性剂十六烷基三甲基溴化铵(CTMAB)和微波辐照联合改性。在常温、动态吸附下,以改性海泡石对镀镍废水进行吸附处理,探讨了其对镀镍废水的处理效果及条件。结果表明,改性海泡石处理镀镍废水效果很好;常温、流速为3 mL/min下,当废水pH值为4.0时,对镀镍废水中的Ni2+具有很好的吸附性能,去除率为99.8%。改性海泡石可再生利用,再生后对Ni2+的去除率仍达90%。
For the purpose of developing novel adsorbing materials with good efficiency and low cost, crude sepiolite was pre-treated by purification, acidification, and sodium-exchange, followed by co-modification with surfactant hexadecyl trimethyl ammonium bromide (HTMAB) and microwave irradiation. Resultant modified sepiolite was then used to treat Ni electroplating wastewater under room temperature and dynamic adsorption conditions. The efficiency of modified sepiolite for treatment of Ni electroplating wastewater as well as the treatment conditions was explored. Results show that the modified sepiolite has good adsorption capacity and treatment effect for Ni electroplating wastewater. Namely, it has good adsorption capability for Ni2+ in Ni electroplating wastewater under the conditions of room temperature, wastewater flow rate 3 mL/min and pH value 4.0, showing a Ni2+ removal rate of up to 99.8%. Besides, the modified sepiolite can be well regenerated, and even after regeneration, it is still able to remove Ni2+ in the wastewater at a rate of 90%.
出处
《材料保护》
CAS
CSCD
北大核心
2012年第7期55-56,59,共3页
Materials Protection
关键词
废水处理
镀镍废水
NI2+
改性海泡石
有机改性
吸附性能
wastewater treatment
nickel electroplating wastewater
Ni2+
modified sepiolite
organic modification
adsorption capacity
