文献类型：期刊文献

中文题名：钢渣在海洋中无机固碳行为及其应用

英文题名：Inorganic carbon fixation behavior of steel slag in seawater and its application in coastal environments

作者：柯盛[1,3];连靖[2];梁可安[2];黄家添[2];肖永贤[2];张际标[1,2];陈春亮[1,3]

机构：[1]广东海洋大学海洋资源与环境监测中心,广东湛江524088;[2]广东海洋大学化学与环境与学院,广东湛江524088;[3]广东海洋大学分析测试中心,广东湛江524088

年份：2022

卷号：46

期号：8

起止页码：101

中文期刊名：海洋科学

外文期刊名：Marine Sciences

收录：CSTPCD、、CSCD2021_2022、北大核心、CSCD、北大核心2020

基金：广东省科技计划项目(2016A020225004);广东海洋大学大学生创新创业训练计划项目(CXXL2019306)。

语种：中文

中文关键词：钢渣;海水;浸出特征;固碳能力

外文关键词：steel slag;seawater;leaching characteristics;carbon fixation capacity

中文摘要：钢渣是钢铁生产过程中的副产物,是一种放错的资源。钢渣投放在水体中可显著提升水体pH值,并能吸收大量的CO_(2)。为了解钢渣投放在海洋中可能引起的pH变化及其无机固碳能力,本研究考察了不同粒径、钢渣含量、初始pH及是否扰动等条件下钢渣/海水的pH变化特征和固碳能力。结果表明,不同条件下的钢渣/海水体系,随着浸泡时间的延长,浸出液pH初期都快速升高,后期趋于平缓,且钢渣粒径越小、投入钢渣含量越多及外加振荡作用,都可使浸出液pH提升;同时,浸出液能维持的pH水平对钢渣/海水体系固碳效率影响较大,而钢渣粒径的大小是钢渣固碳能力的最直接影响因素。本工作结果还表明,在实海环境中投放一定量的钢渣有助于预防局部水体酸化,并起到固碳减排的目的。

外文摘要：Steel slag is an underutilized resource that is produced as a by-product of the steelmaking process.When steel slag is added to water,it significantly increases the pH level and absorbs a substantial amount of CO2.The pH change characteristics and carbon fixation capacity in the steel slag/seawater system were investigated under dif-ferent conditions such as particle size,steel slag content,initial pH,and external force disturbance to understand the environmental feasibility of steel slag application in coastal environments.The results show that under different conditions,the pH of the slag/seawater system increases rapidly in the initial stage and tends to stabilize as immersion time increases.The pH increase of the leaching solution was mainly due to particle size,steel slag content,initial pH,and external force disturbance.Furthermore,the carbon fixation efficiency in the steel slag/seawater system is influenced by the pH level that can be maintained by the leaching solution,and the particle size of steel slag is the most direct factor affecting its carbon fixation ability.The results of this work also show that dumping a specific amount of steel slag into the real sea environment can help prevent the local acidification of seawater while achieving the goals of carbon fixing and emission reduction.Therefore,the application of steel slag in the coastal environment is feasible from an environmental protection perspective.