Investigation of the usage of ceramic tubular filtration membrane modules directly and as chitin/chitosan packed adsorption column for the treatment of phenolic resin containing wastewater

In this study, it is aimed to purify industrial wastewater containing phenolic resin by the use of ceramic support (alumina), micro and ultra filtration modules in direct filtration, and by using ceramic membrane support modules as columns packed with chitin/chitosan powder in a circulation adsorption system.. The ceramic membrane support, micro and ultra filters which have different pore shapes and sizes were compared. The best performance was achieved by ultrafiltration and the yield in phenolic resin removal was 78,8%. The removal with the microfilter and support filter was calculated as 31,3% and 1,6%, respectively. By using the support filter as a packed column in the high pressure circulation system employing chitin as the filler adsorbent properties, the adsorption properties of chitin for the phenolic resin adsorption, were determined. The adsorption capacity of the chitin of the phenolic resin was determined as 11,6 mg / g. The adsorbent properties of chitosan as an alternative adsorbent were investigated in the batch system. For this purpose, parameters that affect the adsorption and the optimum values were determined. Temperature, initial concentration of adsorbate and the amount of adsorbent were investigated as parameters. The maximum removal percentage was 44% at 20oC and the adsorption capacity was determined as 11,0 mg / g. Adsorption capacity decreased with increasing temperature. It was observed that the adsorption data were in accordance with Freundlich isotherm model and Lagergren first order kinetics. In the literature, the adsorption capacity of chitosan of the phenolic compounds that were converted to quinine was given as 21,5 mg / g. In addition, the adsorption capacity of the activated carbon obtained from the rice stems was given as 4,9, 11,4, 12,9 and 14,2 mg / g for phenol, and mono, di, trichloro phenols, respectively. No adsorption data for -polymerized phenolic resins has been reported in the literature. This study provided new information to the literature in the field. The phenolic resin adsorption capacities of chitin and chitosan being 11,6 and 11,0 mg / g, respectively, these values were similar to those of the activated carbon produced from agricultural wastes. The activation energy of phenol and 2,4-dicholorophenol adsorption on activated carbon was reported to be 6,69 kj / mol and 9,20 kj / mol, respectively. The adsorption activation energy of phenolic resin on chitosan determined in this study was determined as 6,4 kj / mol. These findings indicate that the adsorption of phenolic resins on chitin and chitosan is favorable for industrial applications. Keywords: Ceramic membrane filter, adsorption, chitin, chitosan, resol phenolic resin.