Research Papers by Jian-Jun Qin

Boron removal is a critical issue in the production of drinking water and of ultra-pure water in the electronics industry. Boron rejection in a RO process is typically in the range of 40–60%. The objective of this study was to distinguish the factor contributing to enhanced boron rejection in reclam

A pilot study for reclamation of secondary treated sewage effluent in Singapore was conducted using a MF/RO system with the capacity of 20 m3/d. A 0.1 µm MF membrane from Asahi and RE-4040-FL RO membrane from Saehan were used in this study. The pilot plant consists of six spiral-wound RO elements. T

Solvent-resistant hollow-fiber UF membranes were selected by measurement of fiber swelling and treatability studies on spent solvent cleaning rinse. The experimental results indicated that the membranes made of both cellulose acetate (CA) and polyacrylonitrile (PAN) materials could tolerate the solv

Hydrophilic hollow fiber ultrafiltration membranes produced from a blend of polysulfone/poly(vinyl pyrrolidone) (PVP, K90) were post-treated with a hypochlorite solution. The results showed that the fluxes of all membranes that were treated with hypochlorite were 4.7–5.3 times higher but the rejecti