Adsorptive performance of coal based magnetic activated carbon for perfluorinated compounds from treated landfill leachate effluents

Schematic diagram of PFCs adsorption mechanism on MAC. [Display omitted] •We present a simple one-step synthetic method for preparing magnetic activated carbon from anthracitic coal in the presence of Fe3O4.•Coal based magnetic activated carbon was applied for removal of PFCs from landfill leachate....

Full description

Saved in:
Bibliographic Details
Published in:Process safety and environmental protection 2018-07, Vol.117, p.383-389
Main Authors: Zhang, Chunhui, Jiang, Shan, Tang, Jiawei, Zhang, Yizhen, Cui, Yuying, Su, Changluo, Qu, Yao, Wei, Lei, Cao, Heshan, Quan, Jingwei
Format: Article
Language:English
Subjects:
Activated carbon
Adsorption
Adsorptive performance
Adsorptivity
Coal based activated carbon
Dosage
Effluents
Isotherms
Lake shores
Landfill
Landfill leachate
Landfills
Leachates
Magnetic activated carbon (MAC)
Magnetic separators
Magnetometers
Morphology
Organic chemistry
Perfluorinated compounds (PFCs)
Perfluoro compounds
Perfluorochemicals
Regeneration
Separators
Surface area
Surface chemistry
Waste disposal sites
Wastewater treatment
Water pollution treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Schematic diagram of PFCs adsorption mechanism on MAC. [Display omitted] •We present a simple one-step synthetic method for preparing magnetic activated carbon from anthracitic coal in the presence of Fe3O4.•Coal based magnetic activated carbon was applied for removal of PFCs from landfill leachate.•PFCs as emerging contaminants were effectively removed by coal based magnetic activated carbon. Coal based powder Magnetic activated carbon (MAC) were prepared, characterized and used successfully for adsorption of PFCs in treated landfill leachate effluents. The morphologies and surface chemistries of MAC were studies by N2 gas adsorption isotherms, SEM, and Lakeshore 7300 vibrating sample magnetometer. The surface areas (SBET), the Langmuir surface area (SLangmuir), the micropore volume and the total pore volume of MAC were calculated according to the corresponding N2 isotherms. Batch adsorption studies were performed at different adsorption dosage and contact time. With 8g/150mL adsorption dosage and 120min contact time, after adsorption by MAC, the removal efficiencies of PFHxA, PFHpA, PFOA, PFNA and PFDoA in leachate samples can reach 72.8–89.6%, respectively. The MAC can be recycled by the high-intensity magnetic separators. The optimal regeneration time for ultrasonic is 4h.
ISSN:0957-5820
1744-3598
DOI:10.1016/j.psep.2018.05.016