Adsorption of Organic Constituents from Reverse Osmosis Concentrate in Coal Chemical Industry by Coking Coal

Hongxiang Xu; Qizheng Qin; Changfeng Zhang; Kejia Ning; Rong Zhao; Penghui Wang; Jiushuai Deng; Gen Huang

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2019.0531

Published Article

LAPSE:2019.0531

Adsorption of Organic Constituents from Reverse Osmosis Concentrate in Coal Chemical Industry by Coking Coal

Hongxiang Xu, Qizheng Qin, Changfeng Zhang, Kejia Ning, Rong Zhao, Penghui Wang, Jiushuai Deng, Gen Huang

April 15, 2019

To solve the unwieldy problem of coal chemical wastewater reverse osmosis concentrate (ROC), a novel treatment method in which coking coal was used to adsorb the organic from ROC and the adsorption mechanism involved was investigated. The results showed that the organic components in the ROC of coal chemical industry can be effectively absorbed by the coking coal and the total organic carbon, UV254 and chromaticity of treated ROC reduced by 70.18%, 70.15% and 59.55%, respectively, at the coking coal dosage of 80 g/L. The isothermal adsorption data were fitted to the Langmuir model well. The kinetics were expressed well by the quasi-second-order kinetic model. The intragranular diffusion model and the BET (Acronym for three scientists: Brunauer⁻Emmett⁻Teller) test showed that the adsorption occurred mainly on the surface of the coking coal and its macropores and mesopores. When the pollutants further diffused to the mesopores and micropores, the adsorption rate decreased. The result of X-ray photoelectron spectroscopy and fourier transform infrared spectroscopy spectra showed that the coking coal mainly adsorbed the nitrogen and oxygen species and the halogenated hydrocarbon organic compounds in the ROC. The chlorinated hydrocarbons and heterocyclic organics in ROC are adsorbed on the surface of coking coal.

Record ID

LAPSE:2019.0531

Keywords

Adsorption, adsorption mechanism, aromatic structure, kinetics

Subject

Reaction Engineering

Suggested Citation

Xu H, Qin Q, Zhang C, Ning K, Zhao R, Wang P, Deng J, Huang G. Adsorption of Organic Constituents from Reverse Osmosis Concentrate in Coal Chemical Industry by Coking Coal. (2019). LAPSE:2019.0531

Author Affiliations

Xu H: Engineering Research Center for Mine and Municipal Solid Waste Recycling, School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China [ORCID]
Qin Q: Engineering Research Center for Mine and Municipal Solid Waste Recycling, School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Zhang C: Engineering Research Center for Mine and Municipal Solid Waste Recycling, School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Ning K: Engineering Research Center for Mine and Municipal Solid Waste Recycling, School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Zhao R: Engineering Research Center for Mine and Municipal Solid Waste Recycling, School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Wang P: Engineering Research Center for Mine and Municipal Solid Waste Recycling, School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Deng J: Engineering Research Center for Mine and Municipal Solid Waste Recycling, School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China [ORCID]
Huang G: Engineering Research Center for Mine and Municipal Solid Waste Recycling, School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
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Journal Name

Processes

Volume

7

Issue

1

Article Number

E44

Year

2019

Publication Date

2019-01-16