期刊论文

Preparation of Activated Carbon Modified by Meglumine and Characteristics of Adsorption of Boron

中文

净水技术

1009-0177

2017

5

53-58

10.15890/j.cnki.jsjs.2017.05.010

广东省省级科技计划项目（2016B020240007） 广州市科技计划项目（201508020078）

本校为第一机构

通过葡甲胺和活性炭制备了葡甲胺改性活性炭(NMDg-C),去除超标4倍的微量硼.试验考察了吸附时间、pH、温度和硼初始浓度对葡甲胺改性活性炭吸附硼效果的影响,并进行了吸附动力学和热力学分析.试验结果表明:改性后的活性炭吸附效果提高显著,吸附后的硼浓度降低到《生活饮用水卫生标准》(GB 5749-2006)以下;改性活性炭吸附硼的最佳条件:pH值为7,温度为15℃,30 mL的2.5mg/L的硼溶液,投加1.5 g改性活性炭,去除率达到90.59％,吸附平衡时间为30 min,理论饱和吸附量约为1.16 mg/g,其吸附过程较好地符合了准二级动力学模型(R2≈1)和Langmuir等温吸附模型,吸附快速.用1 mol/L的KCl溶液作解吸剂,NMDg-C可重...

NMDg-C was prepared and used as adsorbent for boron with concentration of four times as high as that in GB 5749- 2006. The effect of adsorption time, pH value, temperature and initial boron ions concentration on removal efficiencies were studied. Kinetic and thermodynamic analysis was also carried out. The experimental results showed that adsorption effect was significantly improved by using NMDg - C , and boron concentration after adsorption could comply with Standards for Drinking Water Quality （ GB 5749-2006） . The optimal condition pH val...