Phenolic removal processes in biological sand filters, sand columns and microcosms.
This study evaluated the removal processes involved in the removal of the phenolic component of winery wastewater in biological sand filters, sand columns and sand microcosms. It was found that at low influent phenolic concentrations, complete organic removal was accomplished, but at high concentrations, there was incomplete substrate removal and an accumulation of potentially toxic metabolites, including catechol. The sand provided a suitable substrate for the treatment of phenolic-laden waste, and both biotic (48%) and abiotic (52%) removal mechanisms effected the removal of model phenolics. Prior acclimation of microbial communities increased the biodegradation rate of phenolic acids significantly.
Biocatalysis and Technical Biology (BTB) Research Group, Cape Peninsula University of Technology, Bellville Campus, P.O. Box 1906, Bellville 7535, South Africa. welzp@cput.ac.za
P J
PJ
Welz
J-B
JB
Ramond
D A
DA
Cowan
S G
SG
Burton
D000042:Absorption; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*; D012987:Soil / Q000737:chemistry*; D014462:Ultrafiltration / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
D010636:Phenols; D012987:Soil; D062065:Wastewater; D014874:Water Pollutants, Chemical