摘要
核桃壳表面多微孔,具有很大的比表面积,吸附效果良好的特点。通过静态吸附试验研究其对Mn2+的去除效果。分别考察了吸附反应时间、pH、原水Mn2+质量浓度、吸附剂投加量对核桃壳除锰效果的影响。结果表明在吸附时间为90 min、原水pH为6.5、Mn2+质量浓度为2.0 mg/L、核桃壳投加量为15 g/L时,核桃壳对Mn2+的吸附效果最好,去除率达到约100%,其对Mn2+吸附规律较好地满足Freundich吸附等温式。
Walnut shell is a porous material with large surface area. The effect of contact time, pH, Mn2＋ concentration of raw water and walnut shell dosage on manganese ion removal was investigated. The results indicate when contact time is 90 min, pH is 6.5, Mn2＋ concentration is 2.0 mg/L and walnut shell dosage is 15 g/L, the manganous ion removal rate reaches about 100 %. The law of adsorption can be described by Freundich models.
出处
《净水技术》
CAS
2012年第4期98-101,共4页
Water Purification Technology
基金
2009年云南省大学生创新性试验计划项目(091067402)
关键词
核桃壳
除锰
吸附
walnut shell manganous ions removal adsorption
