Research Abstracts

There has been great demand for development of technologies that remove toxic heavy metal ions from wastewater. Chemical precipitation operation is known to remove heavy metal ions from water. In this study applicability of alkaline reagents such as Ca(OH)2 (lime) and NaOH (caustic soda) in removing

The transient performance of a stepped solar still with built-in latent heat thermal energy storage was studied. The still was designed for heating and humidification of agriculture greenhouses (GH) in remote areas. The solar still consists of five stepped basins with an inclined glass cover and is

This study investigated the feasibility of the once-through (OT) MSF design for constructing large-capacity desalting plants rather than the conventional brine recycle (BR) MSF configuration. This was to explore the possibility of improving MSF process economics through the application of a simpler

The separation of formic (C1), acetic (C2), propionic (C3), and n-valeric (C5) acids in binary water solutions has been studied using a reverse osmosis (RO) membrane pilot plant operating at different temperatures and pressures (usually 21°C and 1.72 MPa). The RO membrane, which is composite, polyam

Tanning of hides and skins to convert them into leather can have a considerable environmental impact. Wastewater treatment technology can successfully purify leather wastewater. The first part of this research investigated the influence of Al2(SO4)3 concentration on the velocity of tannery wastewate

Separation of ions from aqueous solutions was performed by reverse osmosis (RO) on an "-alumina-supported MFI-type zeolite membrane synthesized by in-situ crystallization. For the 0.1 M chloride single-salt solutions, the separation efficiency in terms of ion rejection was found to increase with the

Nanofiltration membranes (NF) have applications in several areas. One of the main applications has been in water treatment for drinking water production as well as wastewater treatment. NF can either be used to treat all kinds of water including ground, surface, and wastewater or used as a pretreatm

A basin-type solar still integrated with an inverted absorber asymmetric line-axis solar compound parabolic concentrator (CPC) is presented as a potential option for high-temperature solar distillation. A simple transient analysis of the system was carried out. Explicit expressions were obtained for

The potential of direct membrane filtration on either ultrafiltration (30, 200 and 400 kDa MWCO) or nanofiltration (200 Da MWCO) membranes was studied as a method of treatment of low load graywater for on site reuse. The graywater collected from a sports center’s public showers and characterized for

The object of this research is to experimentally investigate the principal operating parameters of a new desalination process working with an air multiple-effect humidification–dehumidification method. A test set-up was designed and constructed to carry out and optimize this technique. The main part