摘要
为了更好地去除富营养化水体中的磷,该研究对凹凸棒土进行两次改性。通过初次改性选用的1、2、3、4、5mol/L盐酸进行酸改性得到3mol/L,为最合适的酸改性浓度。然后对初次改性的凹凸棒土负载铝氢氧化物进行二次改性,得到凹凸棒土A、B、C、D。考察了初始浓度、p H值、反应时间及振荡频率等因素对改性凹凸棒土吸附性能的影响,从中选出较佳的除磷吸附剂。通过扫描电镜对原土、初步改性土及除磷效果较好的二次改性吸附剂的形貌进行分析。结果显示:改性吸附剂经改性后磷去除率均有增加,不同改性方法对磷去除率有着显著差异,其中吸附剂C去除效果最好。
In this study,the author modifies attapulgite twice to remove phosphorus from eutrophic water.The modifi-cation of 3 mol/L is the most suitable acid modified concentration by using 1,2,3,4 and 5 mol/L hydrochloric acidto modify attapulgite.Then modifies the initial modified attapulgite with load aluminum hydroxide for twice to get theattapulgites A,B,C,D. The effects of initial concentration,pH value,reaction time and oscillation frequency on theadsorption properties of modified attapulgite is considered to select a better phosphorus removal adsorbent.Usingscanning electron microscope to analyse the morphology of the original soil,the preliminary modified soil and thetwice modified adsorbent of better phosphorus removal performance.The result shows the phosphorus removal rate ofmodified adsorbent is increased,the phosphorus removal rate is significantly different between the different modifiedmethods,and adsorbent C removal efficiency is the best.
出处
《安徽农学通报》
2016年第19期28-31,共4页
Anhui Agricultural Science Bulletin
基金
安徽省级大学生创新项目(项目编号:201511059309)
关键词
凹凸棒土
改性
吸附
总磷去除
Attapulgite
Modified
Adsorption
Total phosphorus removal
