Porous surface modified polyvinylidene ï‌‚uoride (PVDF) hollow fiber membranes are fabricated through a dry-wet phased inversion process. Surface modifying macromolecules (SMM) (1 wt. %) are used as additives in the spinning dope. The performance of the surface modified membrane in contactor application for CO2 stripping from water is assessed through the fabricated gas–liquid membrane contacto...

The determination of apparent nutrient digestibility and availability coefficients (ADC and AAC) of ingredients is an important process in the formulation of cost efficient diets for fish. Collection of feces by repeated manual stripping is commonly practiced. However, due to the stress and possible physical damage imposed on fish during repeated stripping, this practice may influence ADC and A...

This paper discusses nitrogen removal mechanisms in an aerobic membrane bioreactor (MBR) treating high strength pet food wastewater characterized by oil & grease, COD, BOD5, TSS, TKN, NH4-N concentrations of 2800 mg/L, 25000 mg/L, 10000 mg/L, 4500 mg/L, 1650 mg/L and 1300 mg/L respectively. An MBR operating at SRT >25 days achieved mixed liquor total suspended solids (MLTSS) concentrations >300...

Sarkhoon gas plant, located in south of Iran, has been installed to removal H2S contained in a high pressure natural gas stream. The solvent used for the H2S removal from gaseous stream is 34% by weight (wt%) Di-ethanol amine (DEA) solutions. Due to increasing concentration of heat stable salt (HSS) in solvent, corrosivity of amine solution had been increased. Reports indicated that there was c...

N??c r? rác là n??c th?i t? bãi chôn l?p ch?a các thành ph?n ô nhi?m ? n?ng ?? cao. Do ?ó, vi?c x? lý c?n m?t h? th?ng ph?c t?p bao g?m quá trình hóa h?c, lý, sinh h?c và nâng N?ng cao c?a amoniac trong ng?n c?n s? phát tri?n vi v?t nên lo?i b? amoni xu?ng th?p h?n, t?o ?i?u ki?n thu?n l?i cho ti?p theo. Trong nghiên c?u này, tháp tách khí ?? t?ng h?p ?ã ???c thi?t k? th? nghi?m. ?nh h??ng pH, ...