Study on the tannery waste in the preparation of cement foaming agent
A global demand for efficient re-utilization of tannery waste,which is based on the principles of re-use and recycling,results to a circular economy,where one industrys waste becomes anothers raw material and it can be used in a sustainable way.In this study,the collagen in the waste shavings is extracted by hydrolysis with sodium hydroxide.Then,using benzene as a solvent,natural rosin as a raw material,phosphorus trichloride is used as a chlorinating agent to react with natural rosin to obtain rosinyl chloride,and rosinyl chloride is reacted with collagen to prepare a novel anionic surfactant.Lauryl alcohol continued to improve its stability,and the results showed that the overall performance was best when the amounts of SDBS and dodecyl alcohol were 0.25%and 0.6%,respectively.The performance of the obtained foaming agent was tested.The experimental data show that the foaming agent is obtained in this experiment,the foaming height reaches 147mm,and the half-life reaches 580s.
rosin tannery waste cement foaming agent
Meng Liu Baorong Duan Mengmeng Zhang Xiaoning Duan Yaoyao Duan Quanjie Wang
College of Chemistry and Chemical Engineering,Yantai University,Yantai 264005,China
国际会议
合肥
英文
34-37
2019-06-29（万方平台首次上网日期，不代表论文的发表时间）