Characteristics of cationic red x-grl adsorption by raw diatomite and diatomite concentrate

• Autorzy: Ren Z. , Guan J. , Gao H. , Tian J. , Wen Y. , Zheng R.

Identyfikatory

DOI

10.5277/ppmp160104

• Języki publikacji: EN

Abstrakty

EN

Raw diatomite (RD) and diatomite concentrate (DC) were used for the adsorption of cationic Red X-GRL from aqueous solutions. Mono-factor experiments were carried out to investigate the effects of the operation factor, and adsorption kinetics, isotherms, thermodynamics and mechanisms were explored. Similar trend for X-GRL adsorption onto RD and DC was observed. The adsorption capacity of dyes increased slightly with temperature, and the neutral pH was the optimum level. The adsorption processes occurred in accordance with the pseudo second-order model and were well fitted by the Langmuir isotherm model. The main driving forces of the physical adsorption on the diatomite were electrostatic attraction and van der Waals force. The RD could uptake more X-GRL than DC due to its higher content of fine particle and therefore, due to higher surface area available for adsorption. Raw diatomite as a cheap absorbent for X-GRL removal can be suggested as a promising supplement to activated carbon.

Słowa kluczowe

EN

diatomite; dye; adsorption; fine particles

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2016
• Tom: Vol. 52, iss. 1
• Strony: 44--55
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Ren Z.

• School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China

autor

Guan J.

• School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China

autor

Gao H.

• School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China

autor

Tian J.

• School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China

autor

Wen Y.

• School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China

autor

Zheng R.

• School of Resources and Environment Engineering, Wuhan University of Technology, Wuhan 430070, China

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.