光催化氧化法处理腐殖酸溶液的实验研究-core.ac.uk.PDF

37 5 V o.l 37 No. 5 2009 5 CHEM ICA L ENGINEERING ( CH INA) M ay 2009 朱爱梅, 李 培, 张秋根, 刘庆林 ( , 361005) : , T iO 2 pH : T iO pH ; pH 2 , , : ; ; T iO ; 2 : X 703; O 625 : A : 1005-9954( 2009) 05-0062-04 Experimental studieson treatinghumid acid solution by photocatalytic oxidation ZHU A-ime,i LIPe,i ZHANG iu-gen, LIU ing-lin ( College of Chem istry and Chem ical Eng ineering, X iam en Un iversity, X iam en 361005, Fujian Prov ince, Ch ina) Abstract:Hum id acid (HA ) is the representation of organ icm atter in w astew ater. The behav iors of adsorption and photocatalytic ox idation of HA in w ater on T iO particles were studied. The effects of d ifferent factors on rem oval of 2 HA from water w ere investigated, such as m ass concentration of catalyst, initial value of pH, initial m ass concentration of HA, etc. The resu lts show that the adsorption am ount of HA in balance on T iO2 particles is independent of in itial pH value of the solution. The rem oval efficiency of HA is mi proved greatly w ith the decreasing of initial pH value and in itialm ass concentration ofHA. Comparing the rem oval eff iciency of photocatalytic ox idation w ith that of ultraviolet radiation alone, the photocataly tic ox idation is better than ultrav iolet radiation alone. Key words: photocatalytic ox idation; hum ic ac id; T iO ; adsorption 2 , T iO