« Previous AbstractThe solution NMR structure of Antheraea polyphemus PBP provides new insight into pheromone recognition by pheromone-binding proteins    Next AbstractPartial ozonation pre-treatment for sludge solubilization and simultaneous degradation of bisphenol A: quantification studies »

J Hazard Mater

Title:		Parameter optimization of ferro-sonication pre-treatment process for degradation of bisphenol A and biodegradation from wastewater sludge using response surface model
Author(s):		Mohapatra DP; Brar SK; Tyagi RD; Surampalli RY;
Address:		"INRS-ETE, Universite du Quebec, Quebec, Canada"
Journal Title:		J Hazard Mater
Year:		2011
Volume:		20110226
Issue:		1-Feb
Page Number:		100 - 107
DOI:		10.1016/j.jhazmat.2011.02.004
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"In this study, the application of response surface model in predicting and optimizing the ferro-sonication pre-treatment for degradation of bisphenol A (BPA), an endocrine disrupter compound from wastewater sludge (WWS) was investigated. The ferro-sonication pre-treatment process was carried out according to central composite design (CCD) with four independent variables such as wastewater sludge solids concentration, pH, ultrasonication time and FeSO(4) concentration. The effect of ferro-sonication pre-treatment was assessed in terms of increase in sludge solids (suspended solids (SS) and volatile solids (VS)) and organic matter (chemical oxygen demand (COD) and soluble organic carbon (SOC)) solubilization and simultaneous BPA degradation from WWS. It was observed that among all the variables studied, ultrasonication time had more significantly affected the efficiency of the ferro-sonication pre-treatment process followed by FeSO(4) and solids concentration. Through this optimization process, it was found that maximum BPA degradation of 88% could be obtained with 163 min ultrasonication time, 2.71 mg/L FeSO(4) concentration, pH 2.81 with 22 g/L SS. Further, the effect of ferro-sonication pre-treatment on biodegradation of WWS was also studied. It was observed that ultrasonication time had significant effect and the higher biodegradation (32.48%) was observed at 180 min ultrasonication time"
Keywords:		"Air Pollutants, Occupational Benzhydryl Compounds *Biodegradation, Environmental Endocrine Disruptors Estrogens, Non-Steroidal Free Radical Scavengers Phenols/chemistry/*metabolism Sewage/*chemistry *Sonication Waste Disposal, Fluid/methods Water Pollutan;"
Notes:		"MedlineMohapatra, D P Brar, S K Tyagi, R D Surampalli, R Y eng Research Support, Non-U.S. Gov't Netherlands 2011/03/01 J Hazard Mater. 2011 May 15; 189(1-2):100-7. doi: 10.1016/j.jhazmat.2011.02.004. Epub 2011 Feb 26"