福建师范大学学报（自然科学版）2025，Vol.41Issue(2)：74-82,9.DOI:10.12046/j.issn.1000-5277.2025010017
电镀污泥基轻质陶粒的制备及其性能
Preparation and Properties of Lightweight Ceramsite from Electroplating Sludge
摘要
Abstract
Resource utilization is an important technological development direction for electro-plating sludge disposal.In this study,based on the Riley ternary phase diagram,electroplating sludge was mixed with crushed sand tailings in a proper ratio to prepare electroplating sludge-derived lightweight ceramsites with the addition of a foaming agent.The composition,structure,and phase of the prepared ceramsites were characterized using SEM,XRF,and XRD,respectively.Further-more,the physical properties and leaching toxicity of the lightweight ceramsites were analyzed,and the impact of the foaming process on their structure and properties was investigated.The results show that the lightweight ceramsite,derived from a mixture of 20%electroplating sludge and 79%crushed sand tailings with 1%foaming agent,calcined at 1 170℃for five minutes,exhibits a uniform foam structure and excellent mechanical properties,including a cylinder pressure strength of 2.1 MPa,an apparent density of 911 kg·m-3,a porosity of 49.1%,and a water absorption of 0.43%(within 1 hour).Additionally,the leaching toxicity of the prepared ceramsite is below the national standard.These results indicate that the prepared ceramsite is a potential candidate for use as a lightweight building aggregate.The study explores a new approach to utilizing electroplating sludge as a resource.关键词
电镀污泥/资源化利用/轻质陶粒/发泡机制/性能Key words
electroplating sludge/resource utilization/lightweight ceramisite/foaming mechanism/properties分类
环境科学引用本文复制引用
张润泽,李卿,杨澍,黄域沧,陈梦娟,余丰毅,陈征,陈荔英,钱庆荣..电镀污泥基轻质陶粒的制备及其性能[J].福建师范大学学报（自然科学版）,2025,41(2):74-82,9.基金项目
国家"十四五"重点研发计划课题(2023YFC3906301) （2023YFC3906301）
福建省环保科技项目(2023R017) （2023R017）
