化工环保2024，Vol.44Issue(3)：417-426,10.DOI:10.3969/j.issn.1006-1878.2024.03.016
秸秆基新型道路抑尘剂的制备与应用
Preparation and application of a novel straw-based road dust suppressor
摘要
Abstract
With corn straw as the main raw material and composite enzymes(xylanase,β-glucanase,cellulase,and sodium carboxymethyl cellulose(CMC)),starch,and Na2CO3 as excipients,a road dust suppressor was prepared.Response surface analysis was used to optimize the preparation process,and the removal of the dust suppressor on PM2.5 and PM10 in the atmosphere was investigated.The experimental results show that the influence of the four enzymes on the water loss rate of dust suppressor in descending order is β-glucanase>xylanase>CMC>cellulase.The optimal process conditions are the mass ratio of xylanase,β-glucanase,cellulase,and CMC at 2.5∶1∶15∶23.5,reaction temperature at 45℃,reaction pH of 4.75,and mass ratio of starch to composite enzymes at 1.8∶1.Under these conditions,the viscosity of the dust suppressor prepared is 48 mPa·s,the surface tension is 0.02 N/m.The density is 1 028 kg/m3,and the water loss rate is 2.17%.After dust suppressor spraying,the mass concentration of PM2.5 in the atmosphere decreases from 75.74-114.83 mg/m3 to 0.34-0.91 mg/m3,and that of PM10 decreases from 49.94-74.57 mg/m3 to 0.12-0.34 mg/m3.The removal rates of PM2.5 and PM10 are both greater than 99%.关键词
抑尘剂/道路扬尘/秸秆/响应面分析法Key words
dust suppressant/road dust/straw/response surface method分类
资源环境引用本文复制引用
方宏萍,秦语漩,竹涛,李桂贤,马连刚,谢天航..秸秆基新型道路抑尘剂的制备与应用[J].化工环保,2024,44(3):417-426,10.基金项目
贵州省省级科技计划项目(黔科合基础[2019]1417,黔科合平台与人才项目[2017]5789-18) （黔科合基础[2019]1417,黔科合平台与人才项目[2017]5789-18）
贵州省教育厅高校人文社会科学研究项目(23RWJD210). （23RWJD210）
