文献类型：期刊文献

中文题名：湛江钢铁钢渣混凝土在海水中的溶出行为与特征

英文题名：Leaching Behavior and Characteristics of Zhanjiang Steel Slag Concrete in Seawater

作者：容宇媚[1];张际标[1];梁可安[1];肖永贤[1];陈春亮[2];王学锋[3]

机构：[1]广东海洋大学化学与环境学院,广东湛江524088;[2]广东海洋大学分析测试中心,广东湛江524088;[3]广东海洋大学水产学院,广东湛江524088

年份：2020

卷号：47

期号：19

起止页码：51

中文期刊名：广东化工

外文期刊名：Guangdong Chemical Industry

基金：广东省重点领域研发计划(2020B1111020004);广东省省级科技计划项目(2016A020225004);广东海洋大学冲一流项目(231419018);广东海洋大学创新强校项目(230420021)。

语种：中文

中文关键词：钢渣;钢渣混凝土;重金属;营养盐;溶出特征

外文关键词：steel slag;steel slag concrete;heavy metals;Nutrients;leaching characteristics

中文摘要：以钢渣混凝土为研究对象,进行不同配比钢渣混凝土在海水中静态溶出和动态溶出实验,分析钢渣混凝土中pH、盐度、钙、镁及常见重金属元素和营养要素在海水中溶出特性和溶出规律。结果表明,钢渣混凝土实验组在静态和动态条件下盐度下降,pH上升,混凝土中添加钢渣在静态条件下能促进pH升高,在动态条件下pH变化不显著;钙、镁元素在静态和动态条件下均表现为正溶出,添加钢渣能抑制钙、镁的溶出,且含35%钢渣混凝土组对钙镁溶出的抑制效应最小;Cr、Cd和Pb表现为负溶出,动态实验对Cr、Cd和Pb的吸附效果优于静态实验,Hg表现为未检出,Fe、Mn、Cu表现为正溶出,钢渣实验组在静态条件下Fe的平均溶出增量是动态条件下的2.9倍,Cu的平均溶出增量是动态条件下的2.3倍;总氮、总磷和溶解硅在静态和动态条件下均表现为正溶出,添加钢渣能促进总氮和溶解硅的溶出,促进动态条件下总磷的溶出,抑制静态条件下总磷的溶出。

外文摘要：Taking Zhanjiang Steel steel slag as the doping material,the leaching experiments of different proportions slag concrete was conducted in static leaching and dynamic leaching conditions in seawater.The leaching behavior and characteristics of pH,salinity,calcium,magnesium,common heavy metal elements and nutrient elements were also surveyed from steel slag concrete in seawater.The results showed that in leaching seawater,the salinity decreased and the pH increased under static and dynamic leaching conditions of steel slag concrete experimental groups.The addition of steel slag into concrete can promote the pH increase of leaching solutions under static leaching condition,but the change of pH was not significant under dynamic leaching condition;Calcium and magnesium elements showed positive leaching from slag concrete under both static and dynamic leaching conditions.The addition of steel slag can inhibit the leaching of calcium and magnesium,and the concrete containing 35%steel slag had the least inhibitory effect;Cr,Cd and Pb showed negative leaching,the adsorption effect of dynamic experiment on Cr,Cd and Pb is better than static experiment,The Hg content was below the detection limit.Fe,Mn and Cu showed positive leaching.In the steel slag experimental group,the average leaching increment of Fe under static conditions is 2.9 times that under dynamic conditions,and the average leaching increment of Cu dissolution under static conditions is 2.3 times that under dynamic conditions.Total nitrogen,total phosphorus and dissolved silicon showed positive leaching under both static and dynamic leaching conditions.The addition of steel slag can promote the leaching of total nitrogen and dissolved silicon,promote the leaching of total phosphorus under dynamic leaching conditions,and inhibited the leaching of total phosphorus under static leaching conditions.