title: Recovery of protein from poultry processing wastewater using membrane ultrafiltration.
abstract: The feasibility of using ultrafiltration (UF) to recover protein from poultry processing wastewater (PPW) after primary treatment was investigated. By using polysulfone membrane with 30,000 molecular-weight-cut-off, almost all crude proteins in PPW were retained, subsequently reducing the chemical oxygen demand (COD) in the effluent to less than 200 mg L(-1). Similar to the processing of proteinaceous materials, the average fluxes reached only 100 Lm(-2) h(-1). By identifying the optimal values of key operation parameters, including pH, volumetric flow rate, and transmembrane pressure (6.74, 683 mL min(-1) and 14 psi, respectively) using response surface methodology (RSM), the flux was improved to higher than 200 Lm(-2) h(-1). Although severe membrane fouling was still inevitable after processing, flushing the membrane with a cleaning reagent was found capable of effectively restoring membrane performance.
authors.affiliation: Department of Nutrition and Food Science, University of Maryland, 3102 Marie Mount Hall, College Park, MD 20742, USA. ymlo@umd.edu
authors.forename: Y Martin
authors.initials: YM
authors.lastname: Lo
authors.forename: Donghua
authors.initials: D
authors.lastname: Cao
authors.forename: Sanem
authors.initials: S
authors.lastname: Argin-Soysal
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Tae-Shik
authors.initials: TS
authors.lastname: Hahm
mesh_terms: D000818:Animals; D005223:Fats; D005240:Feasibility Studies; D005525:Food-Processing Industry; D006863:Hydrogen-Ion Concentration; D008567:Membranes, Artificial; D008962:Models, Theoretical; D011200:Poultry; D011312:Pressure; D011506:Proteins / Q000302:isolation & purification*; D013997:Time Factors; D014462:Ultrafiltration / Q000295:instrumentation / Q000379:methods*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014877:Water Pollution, Chemical / Q000517:prevention & control
chemical_list: D005223:Fats; D008567:Membranes, Artificial; D011506:Proteins