盐酸羟胺改性柚皮吸附剂的制备及对Cu~(2+)吸附性的研究

用盐酸羟胺改性柚子皮制备一种新型的生物质吸附剂,通过模拟废水吸附试验研究了其对Cu~(2+)的去除效果。从模拟废水的pH、吸附时间、吸附剂用量和反应温度4个方面分别考察了改性柚子皮吸附剂对铜离子去除的影响。以溶液的吸光度和电导率来表征吸附性能。实验结果表明:吸附反应时间、吸附剂加入量、反应温度和模拟废水的pH等4个因素对吸附剂性能均有明显影响,其中当Cu~(2+)的初始质量浓度为100mg/L,温度为35℃,溶液pH=4,吸附剂质量为吸附剂/吸附质质量的15%,吸附时间为25min时,吸附率最高。

A Study on the Preparation and Adsorption Performance of Modification of Pomelo Peel

In this paper a new method for making the biomass adsorbent by modifying pomelo peel with hydroxylamine hydrochloride was presented ,and the experiment of removing Cu2+ in water was also studied .The effects of pH value ,adsorbent doses ,adsorption time and temperature were investigated ,which was characterized by the absorbance and electrical conductivity .The results indicated that 35 ℃ ,25 min ,pH=4 ,15% of the ratio of the mass of adsorbate/adsorbent was proportional to the initial Cu2+ concentration of 100 mg/L ,and the adsorption rate for Cu2+w as over 80% .