Research Abstracts

Extracellular polymeric substances (EPS) are considered as the major cause of membrane fouling in membrane bioreactors. Recent studies have revealed a linear relationship between fouling rate (increase of filtration resistance over time) and polysaccharide (PS) concentration [1]. Several factors lik

A comprehensive study was aimed at testing materials of construction of multistage flash (MSF) distillation plants. The study included testing corrosion resistance and performance of several alloys under real operating conditions similar to those of high, medium, and low temperature stages of the he

Biosorption experiments were performed using different pretreated activated sludge as bioadsorbent for Cu2+, Cd and Ni2+. Pretreatment with NaOH was found to improve the adsorption capacity of the sludge where as treatment with HCl reduces it. The treated and untreated sludge show great affinity tow

The treatment of effluents from the regeneration of cation exchanger by the membrane distillation (MD) process has been investigated. The composition of these effluents is complex due to the content of residual acid (1–50 g HCl/dm3) and different amounts of various salts (ranging in concentration fr

The purpose of this study was to determine the treatability of 2,4 dichlorophenol (DCP) in an anaerobic/aerobic sequential reactor system when molasses was used as carbon source. Laboratory scale upflow anaerobic sludge blanket (UASB) reactor/completely stirred tank reactor (CSTR) were operated at d

The objective of this research project was to develop a process that makes use of low-grade heat provided from solar irradiation to drive a distillation-desalination process. An optimized distillation process re-uses input heat, by using the heat-of-condensation as the heat source for pre-heating th

Application of membrane extraction process to the removal of phenol from its aqueous solution was investigated. The ability of poly (dimethylsiloxane), i.e. PDMS and poly (methyl vinyl) siloxane (PVMS) in the membrane extraction of water–phenol mixtures was compared. It was found that PDMS was more

Multistage flash (MSF) distillation technology has been serving heavily as a primary source of freshwater in most Gulf States and elsewhere in the world for the past half a century. Though the technology has a proven record of operational reliability, corrosion continues to pose serious threat to MS

A new desalination technology named Desalination Pipeline is proposed. The Desalination Pipeline system enables simultaneously desalination and efficient transport of distilled water by applying the working principle of a heat pipe without its liquid recirculation function. The energy source for the

Changes of properties (specific filtration resistance, floc size, supernatant TOC and zeta potential) of activated sludge mixed liquor after monomeric and polymeric coagulants [Al2(SO4)3, FeCl3, PAC (polymeric aluminum chloride) and PFS (polymeric ferric sulfate)] addition were studied in this paper