Research Abstracts

RGDS was successfully immobilized on the PLLA scaffolds via plasma treatment. It was observed that the immobilized RGDS promoted attachment of ROS cells to PLLA. Also, more cells were found in the RGDS-modified scaffold than in the unmodified scaffold, tending to form mineralized foci. The results s

In the present work, cell-specific peptides were immobilized on chitosan and PLA scaffolds. The amount of immobilization, determined by HPLC, was confirmed to be in the effective range. Results from cultures of human fetal skin fibroblasts, rat osteosarcoma, and periodontal fibroblasts demonstrated

The membrane distillation (MD) process for the treatment of wastewater from ion-exchanger regeneration was proposed. The precipitation of salt deposits on the membrane surface was observed when such wastewater was directly used as a feed. A rapid decline of the permeate flux from 532 to 410 dm3/m2d

The use of aluminum sulfate (alum) coagulation prior to reverse osmosis (RO) treatment has been shown to be problematic. Membrane fouling was theorized to occur through soluble aluminum (AP +) reacting with ambient silica (H4SiO 2) to form kaolinite (AI2Si2Os(OH)4) within the RO unit. Chelating agen

The feasibility of VMD for concentration of ethylene glycol (EG) from a used coolant liquid is presented. VMD experiments were performed with water-EG mixtures using a flat-sheet polypropylene membrane at various temperatures and recirculation rates. Results show that the membrane almost completely

The impact of reject brine chemical composition and disposal from inland desalination plants on soil and groundwater in the eastern region of Abu Dhabi Emirate, namely Al Wagan, Al Quaa and Um Al Zumool, was evaluated. Twenty five inland BWRO desalination plants (11 at Al Wagan, 12 at Al Quaa, and 2

The location of big SWRO plants is usually limited by environmental restrictions such as the presence of the Posidonia habitat in the Mediterranean coast. The unknown impacts of brine on the flora and fauna associated at sea grasses has caused environmental damages either high cost disposal solution

Desalination of brackish water containing silica at high recovery levels leads to a rapid flux decline, due to the precipitation of a colloidal solution consisting of polymerized silica nano-particles. The critical flux (CF) phenomenon postulates that there is a certain permeate flux level below whi

A decision support model for the selection of treatment preferences for permeate polishing is presented. The model is based on the analytical hierarchical process that integrates multi-criteria issues into the selection of post- treatment technology for a specific seawater reverse osmosis (SWRO) pla

Water resources in Middle East is very limited and do not satisfy the future water demand. The water shortage is very remarkable in the Arabian Gulf countries which are located in the arid region. The available water resources in the Arabian Gulf countries are mainly the ground water which is not en