文献类型：期刊文献

中文题名：秸秆基新型道路抑尘剂的制备与应用

英文题名：Preparation and application of a novel straw-based road dust suppressor

作者：方宏萍 秦语漩 竹涛 李桂贤 马连刚 谢天航

第一作者：方宏萍

机构：[1]贵州理工学院资源与环境工程学院,贵州贵阳550008;[2]北京工业大学环境与生命学部区域大气复合污染防治北京市重点实验室,北京100124;[3]中国矿业大学(北京)大气环境管理与污染控制研究所,北京100083

第一机构：贵州理工学院资源与环境工程学院

年份：2024

卷号：44

期号：3

起止页码：417-426

中文期刊名：化工环保

外文期刊名：Environmental Protection of Chemical Industry

收录：CSTPCD;;北大核心:【北大核心2023】；CSCD:【CSCD_E2023_2024】；

基金：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);贵州省教育厅高校人文社会科学研究项目(23RWJD210)。

语种：中文

中文关键词：抑尘剂;道路扬尘;秸秆;响应面分析法

外文关键词：dust suppressant;road dust;straw;response surface method

摘要：以玉米秸秆为主要原料,以复合酶(木聚糖酶、β-葡聚糖酶、纤维素酶与羧甲基纤维素钠(CMC))、淀粉、Na_(2)CO_(3)为辅料,制备了一种道路抑尘剂,采用响应面分析法优化了制备工艺,并考察了该抑尘剂对大气中PM_(2.5)和PM_(10)的去除效果。实验结果表明:4种酶对抑尘剂失水率的影响顺序为β-葡聚糖酶>木聚糖酶>CMC>纤维素酶;在木聚糖酶、β-葡聚糖酶、纤维素酶与CMC质量比2.5∶1∶15∶23.5、反应温度45℃、反应pH 4.75、淀粉与复合酶质量比1.8∶1的最佳条件下,所制得抑尘剂的黏度为48 mPa·s、表面张力为0.02 N/m、密度为1028 kg/m^(3)、失水率为2.17%;喷洒该抑尘剂后,大气中PM_(2.5)的质量浓度从75.74~114.83 mg/m^(3)降低至0.34~0.91 mg/m^(3),PM_(10)的质量浓度从49.94~74.57 mg/m^(3)降低至0.12~0.34 mg/m^(3),去除率均大于99%。
With corn straw as the main raw material and composite enzymes(xylanase,β-glucanase,cellulase,and sodium carboxymethyl cellulose(CMC)),starch,and Na_(2)CO_(3)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 PM_(2.5)and PM_(10)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 isβ-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 1028 kg/m^(3),and the water loss rate is 2.17%.After dust suppressor spraying,the mass concentration of PM_(2.5)in the atmosphere decreases from 75.74-114.83 mg/m^(3)to 0.34-0.91 mg/m^(3),and that of PM_(10)decreases from 49.94-74.57 mg/m^(3)to 0.12-0.34 mg/m^(3).The removal rates of PM_(2.5)and PM_(10)are both greater than 99%.