Research Papers by James O. Leckie

A three-stage submerged MBR was operated under a prolonged SRT condition—more than 800 days—to treat high strength industrial wastewater. Throughout the entire experiment, chemical and biological effects on sludge production and nitrification/denitrification were investigated. The trend of MLSS grow

The physiochemical properties of 17 widely used commercial RO and NF polyamide (PA) membranes were fully characterized by atomic force microscopy, transmission electron microscopy, contact angle measurement, streaming potential analysis, and flux and rejection performance tests. The surface properti

The physiochemical properties of reserve osmosis (RO) and nanofiltration (NF) polyamide (PA) membranes are largely determined by their PA chemistry and coatings, if any. Knowledge on such inherent relationship is critically needed in advancing membrane technology. This paper presents a consistent an

High strength industrial wastewater was treated using a pilot scale submerged membrane bioreactor (MBR). The MBR was maintained at higher sludge concentration of 14,500 mg/l at prolonged sludge retention time (SRT). It was found that the prolonged SRT MBR could achieve both COD and TOC overall remov