机构地区: 广西卫生干部管理学院广西南宁530021
出 处: 《广西师范学院学报(自然科学版)》 2004年第1期68-70,共3页
摘 要: 花生壳中含有大量的纤维素类和多酚类物质,经改性后可作为吸附剂用于含重金属离子污水的净化处理.本文采用酸性甲醛溶液对花生壳进行了改性,并以去除水中Pb2+为参考标准,探讨了花生壳改性制备重金属吸附剂的工艺,获得了较佳的改性工艺条件. Peanut hull contains kinds of cellulose and polyphenols,through modification,it may be used as adsorbent of some heavy metal ions,such as Pb^(2+),Cd^(2+),Hg^(2+),etc..In this article,we investigate the effects of modification conditions on the adsorption ability of Pb^(2+) in water.Results show that the optimum should be at 80℃,2hrs and materials ratio 1∶5 be treated with acidity formaldehyde solution (formaldehyde/sulphuric acid).