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                海藻酸钠包埋凹凸棒土颗粒吸附剂的制备及其对单宁酸的吸附

                来源:中国凹凸棒土网    10-26 21:08
                利用海藻酸钠和氯化钙成球原理,包埋制备有机凹凸棒土颗粒(GOAT)吸附剂,通过SEM图和红外谱图进行表征,通过批量实验考察了凹凸棒土颗粒吸附剂对水体天然有机质单宁酸的吸附行为,结果表明,凹凸棒土颗粒吸附剂内部形貌和粉体吸附剂(POAT)相比无明显变化;平衡吸附量(142 mg/g)稍低于粉体吸附剂(148 mg/g);吸附速率较快,100min时吸附趋于平衡,吸附行为符合准二级动力学方程;吸附↑等温线符合Freundlich等温方程,吸附为放热反应;pH为6时吸附性能最佳.

                    关键词:
                    凹凸棒土颗粒 单宁酸 吸附等温线 吸附动力学 吸附热力学
                    Keyword:
                    granular organo-attapulgite tannic acid adsorption isotherm adsorption kinetics thermodynamics
                    作者:
                    于年吉 王海玲 朱兆连 郑为升 闫智超
                    Author:
                    Yu Nianji Wang Hailing Zhu Zhaolian Zheng Weisheng Yan Zhichao
                    作者单位:
                    南京工业大学环境科学与工程学院,江苏省工业节水减排重点实验室,南京211816
                    刊名:
                    环境工程学报
                    Journal:
                    Chinese Journal of Environmental Engineering
                    年,卷(期):
                    2015, 9(10)
                    所属期刊栏目:
                    水污染防治
                    分类号:
                    X703.1
                    基金项目:
                    国家自然科学基金
                    在线出版日期:
                    2015年10月28日(万方平台首次上网日期,不代表论文的发表时间)
                    页数:
                    共6页
                    页码:
                    4753-4758

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