%0 Journal Article
%T 螯合凝胶的制备及其从水溶液除镉性能研究<br>Study on Preparation of Chelating Gel and Its Performance of Removing Cadmium from Aqueous Solution
%A 周虹
%A 刘建
%A 吴茜
%A 吴书凤
%J Hans Journal of Chemical Engineering and Technology
%P 97-102
%@ 2161-8852
%D 2012
%I Hans Publishing
%R 10.12677/HJCET.2012.24017
%X <p>
	<span style=\"font-family:宋体;font-size:10pt;\">镉污染是当今重金属污染中面积最广、危害最大的重金属元素之一，对水体镉污染处理方法的研究也一直是热点研究课题。本文研究了依据</span><span style=\"font-size:10pt;\">Mannich</span><span style=\"font-family:宋体;font-size:10pt;\">反应，以聚丙烯酰胺凝胶</span><span style=\"font-size:10pt;\">(PAM-Gel)</span><span style=\"font-family:宋体;font-size:10pt;\">为骨架，接枝三乙烯四胺，得到了螯合接枝凝胶。当</span><span style=\"font-size:10pt;\">PAM-Gel</span><span style=\"font-size:10pt;\">:</span><span style=\"font-family:宋体;font-size:10pt;\">甲醛</span><span style=\"font-size:10pt;\">:</span><span style=\"font-family:宋体;font-size:10pt;\">三乙烯四胺物料配比为</span><span style=\"font-size:10pt;\">1</span><span style=\"font-size:10pt;\">:</span><span style=\"font-size:10pt;\">2.4</span><span style=\"font-size:10pt;\">:</span><span style=\"font-size:10pt;\">2.5</span><span style=\"font-family:宋体;font-size:10pt;\">，</span><span style=\"font-size:10pt;\">pH = 11</span><span style=\"font-family:宋体;font-size:10pt;\">，反应时间为</span><span style=\"font-size:10pt;\">2 h + 2 h</span><span style=\"font-family:宋体;font-size:10pt;\">，反应温度为</span><span style=\"font-size:10pt;\">50</span><span style=\"font-family:宋体;font-size:10pt;\">℃</span><span style=\"font-family:宋体;font-size:10pt;\">时，得到最佳接枝效果。并研究了该凝胶及从水溶液中去除</span><span style=\"font-size:10pt;\">Cd<sup>2+</sup></span><span style=\"font-family:宋体;font-size:10pt;\">的最佳条件。结果表明，当镉含量为</span><span style=\"font-size:10pt;\">10 mg/L</span><span style=\"font-family:宋体;font-size:10pt;\">时，在</span><span style=\"font-size:10pt;\">pH = 4~8</span><span style=\"font-family:宋体;font-size:10pt;\">，固液比</span><span style=\"font-size:10pt;\">(w/v)</span><span style=\"font-family:宋体;font-size:10pt;\">为</span><span style=\"font-size:10pt;\">1:166</span><span style=\"font-family:宋体;font-size:10pt;\">，振荡时间为</span><span style=\"font-size:10pt;\">40 min</span><span style=\"font-family:宋体;font-size:10pt;\">时，去除率可达到</span><span style=\"font-size:10pt;\">98%</span><span style=\"font-family:宋体;font-size:10pt;\">以上。静态法测得凝胶对镉的饱和吸附量为</span><span style=\"font-size:10pt;\">42.3729 mg/g</span><span style=\"font-family:宋体;font-size:10pt;\">，除镉效果明显。获得了一种新的、低成本的从镉废水中去除镉的材料和方法。<br />
<span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">Cadmium pollution has been one of heavy metal elements which have most widely pollution area in the heavy metal pollution, and researed on treatment of cadmium pollution from aqueous solution also is a hot spot. In this paper, according to the Mannich-Reaction, a kind of chelating polyacrylamide gel (PAM-Gel) grafted with triethylene- tetramine was prepared by using
%K 聚丙烯酰胺凝胶；三乙烯四胺；接枝；除镉<br>Polyacrylamide Gel
%K Triethylenetetramine (TETA)
%K Grafting
%K Removing Cadmium
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=4968