Carboxymethyl cellulose sodium gel: A modified material used to suppress coal dust pollution.
Environ Res
; 215(Pt 1): 114234, 2022 12.
Article
em En
| MEDLINE
| ID: mdl-36075479
ABSTRACT
To reduce the environmental pollution caused by coal dust, a new type of dust inhibitor with a wide application range, high efficiency, and production simplicity was synthesized by modifying sodium carboxymethylcellulose (CMC-Na) with acrylamide (AM). Through molecular dynamics simulations and experiments, the surfactant composition and concentration were optimized. The experimental results showed that the graft copolymer of CMC-Na and AM (CMC-Na-co-AM) had more pores on the microscopic surface and a unique fiber network structure, which greatly increased its contact area with coal dust. After 14 h of drying at 60 °C, coal samples that were sprayed with the dust suppression agent retained >50% of the water in the spray, which was 9 times greater than the water retention of coal samples sprayed with just water. Additionally, the ability of the dust suppression agent to resist wind erosion was 6 times that of water. The CMC-Na-co-AM dust suppression agent showed that it could effectively inhibit the spread of coal dust under strong winds, offering a solution to the problem of coal dust pollution in coal production and storage.
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Base de dados:
MEDLINE
Assunto principal:
Carvão Mineral
/
Minas de Carvão
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article