title: Regeneration of activated carbon saturated with odors by non-thermal plasma.
abstract: The dielectric barrier discharge (DBD) regeneration process of an activated carbon (AC) saturated with dimethyl sulfide was studied on a laboratory scale. The results showed sustainable high regeneration efficiency (RE) (>90%) in successive regeneration cycles (10 cycles). Energy density, humidity and oxygen content were key factors for DBD system, with optimum conditions of 761JL(-1), 0-1vol% and 5%, respectively. The high efficiency was likely attributed to the improvement of structure and surface properties of AC by DBD. After the first regeneration, surface area, micropore volume and total pore volume of AC increased by 8%, 23% and 15% respectively, while average pore size decreased by 9.5%. The number of carboxylic groups doubled (from 0.22 to 0.48mmolg(-1)) while that of phenolic groups remarkably decreased (from 0.48 to 0.26mmolg(-1)) after successive regeneration cycles, which helped to maintain high RE. The results suggested DBD as a novel, efficient alternative process for odor-saturated AC regeneration.
authors: Institute of Environment Science & Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China. chenjie_0002@126.com
authors: Jie
authors: J
authors: Chen
authors: Xinchao
authors: X
authors: Pan
authors: Jianwei
authors: J
authors: Chen
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D004867:Equipment Design; D009812:Odorants / Q000032:analysis*; D058626:Plasma Gases / Q000737:chemistry*; D016062:Porosity; D013440:Sulfides / Q000032:analysis / Q000302:isolation & purification*; D013499:Surface Properties
chemical_list: D058626:Plasma Gases; D013440:Sulfides; D002606:Charcoal; C004784:dimethyl sulfide