摘要
从凹凸棒石黏土(凹土)酸化入手,进行了酸化凹土吸附Cr6+的实验研究。结果表明,酸化凹土对水中Cr6+的吸附性能受pH值和吸附剂用量等因素的影响。酸化凹土对Cr6+的等温吸附曲线同时符合Langmuir方程和Freundlich方程,而原土对Cr6+的等温吸附曲线符合Freundlich方程。酸化凹土对Cr6+的吸附力大于原凹土对Cr6+的吸附力。用酸化凹土对含Cr6+的电镀废水处理,能够使其达到排放标准。
The experiment has been done for adsorption of Cr^6＋ by acid-treatment palygorskite, The result shows that the adsorption is affected by amount of adsorbent and aqueous pH. The adsorption curve of Cr^6＋ by acid-treatment palygorskite conforms with Langmuir equation or Freundlich equation, and that by original palygorskite conforms with Freundlich equation. Adsorption affinity of acid-treatment palygorskite is stronger than that of original palygorskite. And acid-treatment palygorskite can be used in treating electric plating wastewater, and the indexes after adsorption have met the requirement of National Standard of Wastewater Discharge.
出处
《非金属矿》
CAS
CSCD
北大核心
2007年第4期60-61,64,共3页
Non-Metallic Mines
基金
江苏省科技攻关项目(BE2006371)
江苏省自然科学基金项目(BK2004168)
关键词
C^6+
凹凸棒石黏土
酸化
吸附
应用
Cr^6＋ palygorskite acid-treatment adsorption application
