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Abstract: Influence of pulse discharge on pore structure and surface properties of granular activated carbon (GAC) were investigated with the combination of pulsed streamer discharge in the non equilibrium plasma water treatment reactor. The results showed that the textural properties of all three GAC were modified only slightly in pulse streamer discharge; however, their chemistry surface properties were influenced strongly. Both the acid and basic functional groups on the carbon surface could be increased. The results of repeated use indicated that GAC can be efficiently regenerate in situ during combined treatment. [Copyright &y& Elsevier]

Abstract: The degradation efficiency of organic contaminants and the catalysis of granule activated carbon (GAC) were investigated in a combined treatment of pulsed streamer discharge. The experimental result shows that the degradation rate could be observably increased and enhanced 22% in the combined treatment. This case indicates that synergetic effect can be formed in the combined treatment. The degradation rate could be enhanced 12.3% with saturated GAC in pulsed discharge. The data analysis indicates that regeneration of GAC can be achieved in this process. With the addition of H2O2, a synergistic effect was improved. Furthermore, it is also helpful to the regeneration of GAC. [Copyright &y& Elsevier]

Abstract: The catalysis of various granular activated carbons (GAC) was investigated with the combination of pulsed streamer discharge in the non equilibrium plasma water treatment reactor. The results showed that the removal efficiency of Methyl Orange (MO) could be increase significantly and the chemical oxygen demand (COD) can be removed effectually in the presence of GAC1 and GAC3 due to their catalysis and adsorption. The basic functional groups (BFG) on GAC surface displayed catalytic activity because the catalytic decomposition of ozone generated hydroxyl radicals in aqueous phase. The catalytic properties were favored by both the basicity of the carbon surface and the higher specific surface area (SBET) of carbon. [Copyright &y& Elsevier]