Systematic Approach to Quantify Adsorption
and Biodegradation Capacities on Biological
Activated Carbon following Ozonation
張怡怡
Liang CH;Chiang PC;Chang EE;;
摘要Abstract
The goal this research was to develop a systematic aproach to quantify adsorption and biodegradation capacities on bioogical activated cabon (BAC).The role of adsorption and biodegradation on BAC was studied using a continuous column.Several media,i.e.,granular activated carbon (GAC),seeded glass bead and seeded GAC,and a target compound
(p-hydroxybenzoic acid)were selected.Before breakthrough,the effluent of the GAC column ccontained a small amount of p-hydroxybenzoic acid that contributed thegreatest amount of organic carbon to the effluent of the glass bead column,which suggests that adsorption should be the prevailing mechanism for removal the p-hydroxybenzoic acid,and biodegradation should be responsile for reducing the ozonation intermediates.Also,the bioactivity approach (biomass respiration potential,BRP)of BAC can not only reveal the importance of biodegradation mechanisms for the intermediates of ozonation,but also quantify the extent of the adsorption or biodegradation reaction occuring on BAC.
