标题:Synthesis and performance characteristics of a new ecofriendly crust-dust suppressant extracted from waste paper for surface mines
作者:Li, Shuailong ;Zhou, Gang ;Liu, Zongqi ;Wang, Naiguo ;Wei, Zunyi ;Liu, Wei
作者机构:[Li, Shuailong ;Zhou, Gang ;Liu, Zongqi ] College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao; 266 更多
通讯作者:Zhou, Gang
通讯作者地址:[Zhou, G] College of Safety and Environmental Engineering, Shandong University of Science and TechnologyChina;
来源:Journal of Cleaner Production
出版年:2020
卷:258
DOI:10.1016/j.jclepro.2020.120620
关键词:Crust-dust suppressant; Molecular dynamics simulation; Sodium carboxymethyl cellulose; Surface mine; Waste paper extraction
摘要:Due to production technologies such as blasting, transportation, and loading, large quantities of dust are produced in surface mines. This dust not only pollutes the environment but also restricts the development of coal mining enterprises. This work aims to use waste paper as raw material for the efficient extraction of cellulose, in which waste materials can be converted to useable materials. This work can broaden the sources of raw materials and provide new methods for the efficient preparation of dust suppressants. As a matrix, sodium carboxymethyl cellulose is a novel crust-dust suppressant that is synthesized by graft copolymerization with polyvinylalcohol and N-vinylpyrrolidone in this study. The results of experiments revealed the high purity of sodium carboxymethylcellulose prepared in flotation for 20 min, the degree of substitution DS > 0.8, and the viscosity of 2% aqueous solution>300 mPa s, which can satisfy the requirements of the experiments. The microscopic reaction and structure of the product are analyzed by infrared spectrometry, scanning electron microscopy and thermogravimetry, and the microscopic mechanism of a crust-dust suppressant is investigated. The reaction process and structural characteristics of the product were analyzed by infrared spectroscopy and scanning electron microscopy, and the product reaction process and final structure were deduced. Thermogravimetric experiments showed that the product had strong thermal stability and ensured the performance of the product during use. This paper reveals the combination of dust suppressants and coal via molecular dynamics simulation. The product performance experiments show that the product has a high shell strength of 98 HA, satisfactory freeze-thaw resistance and high temperature resistance, permeability higher than 15 mm/min, and dust suppression rate of approximately 88% when the wind speed reaches 15 m*s−1 and it can degrade without pollution. In general, the product can effectively suppress coal dust and other forms of dust. © 2020 Elsevier Ltd
收录类别:EI;SCOPUS
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079833450&doi=10.1016%2fj.jclepro.2020.120620&partnerID=40&md5=cf721b2a18412a2f3e5a2bde86cf8df6
TOP