废弃混凝土资源化技术路线的探究  

Exploration of Resource Utilization of Waste Concrete

作　　者：张谊 车帅 黄瑞 朱培鑫 刘彦超[1] ZHANG Yi;CHE Shuai;HUANG Rui;ZHU Peixin;LIU Yanchao(Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian Liaoning 116023,China)

机构地区：[1]沈阳化工大学,辽宁沈阳110142 [2]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《辽宁化工》2024年第7期997-999,1004,共4页Liaoning Chemical Industry

基　　金：高炉渣基沸石类CO_(2)吸附剂的开发及气体吸附性能研究(项目编号:LQ2020016)。

摘　　要：随着中国现代化发展,出现大量建筑垃圾,建筑全生命周期碳排放占比超过40%^([1]),这些建筑垃圾中混凝土占60%。如果不恰当地利用这些废旧混凝土,不仅会造成资源的浪费,还会造成环境的污染。利用废旧混凝土并使用碱熔融水热法制备硅酸盐矿物钙水化石榴石(Ca_(3)Al_(2)(SiO_(4))(OH)_8)固体吸附剂,在303 K、103.99 kPa条件下CO_(2)吸附量达到了1.83 mmol·g^(-1)。为了实现部分废旧混凝土资源化并减少二氧化碳危害,达到以废治废的目的,对钙水化石榴石固体吸附剂的制备过程和吸附性能进行了探究。With the modernization of China,a large amount of construction waste appears,and the carbon emissions of the whole life cycle of buildings account for more than 40%[1],and concrete accounts for 60%of these construction wastes.If these waste concrete is not properly used,it will not only cause waste of resources,but also cause environmental pollution.In this paper,the silicate mineral calcium water garnet(Ca_(3)Al_(2)(SiO_(4))(OH)_(8))solid adsorbent was prepared from waste concrete by alkali molten hydrothermal method,and the adsorption capacity reached 1.83 mmol·g^(-1) at 303 K and 103.99 kPa.In this paper,in order to realize the recycling of some waste concrete,reduce the harm of carbon dioxide,and achieve the purpose of treating waste with waste,the preparation process and adsorption performance of calcium hydrated garnet solid adsorbent were explored.

关 键 词：废弃混凝土 钙水化石榴石 以废治废 气体吸附 

分 类 号：TQ178[化学工程—硅酸盐工业]