Research Abstracts

Mono- and pentamine immobilized silica were prepared through the treatment of silica with 3-aminopropyltriethoxysilane and 3-glycidoxypropyltrimethoxysialne. The success of immobilization process was confirmed by means of FT-IR and thermogravimetry (TG). The surface properties of the modified silica

An automatic vacuum membrane bioreactor (AVMBR) equipped with an on-line air–water–chemicals backwashing system was developed for a purpose of the reclamation of domestic wastewater (300–800 mg-COD/L) and traditional Chinese medicine (TCM) wastewater (259–12775 mg-COD/L). The experimental setups wer

The availability of freshwater to meet different water needs has raised serious concerns in the last decades all around the world. Water scarcity, deterioration of quality and increasing demand have led to the development and use of alternative sources of water. Reclamation and recycling are now con

This study was conducted to (1) determine appropriate conditions for nitrogen removal by a combined constructed wetland (CW) system and (2) evaluate the effects of hydraulic loading rate (HLR), nitrogen loading rate (NLR), effluent recirculation, plant uptake, and seasonal change on the removal effi

An inorganic polymer, poly-silicic-ferric (PSF) coagulant was prepared by co-polymerization, and the hydrolysis products distribution of PSF was calculated from the pH changes during the hydrolysis process of PSF. The characterization of PSF and total phosphorus (TP) removal by PSF were studied in c

Adsorbent prepared from maize cob powder (MCP), an agricultural waste, was successfully used to remove the malachite green from an aqueous solution. The adsorption was carried out by varying the parameters such as agitation time, dye concentration, adsorbent dose and pH at constant temperature of 27

Solution of Congo red, an azoıque dye, was decoloured by direct UV photolysis at 254 nm and at pH 6.6 of the ¨ solution. It has been observed, that decolouration process of Congo red solutions, became slow when concentration increased in the medium. For example, for the lowest concentration (10 ppm)

A lab-scale anaerobic/anoxic/aerobic (A1/A2/O) system with three cycles was developed to purify high-strength coking effluent, 8,000–15,000 mg chemical oxygen demand (COD)/L, characterized by high levels of toxic organics and ammonia, 1200–1700 mg phenol/L and 700–1800 mg ammoniacal-nitrogen/L. Besi

Characterization and anaerobic treatment of leachates generated by Jebel Chakir landfill has been carried out. The characterization shows that leachates contain high concentration of carbon and nitrogen. The total volatile fatty acid (VFA) represents 30% of total organic carbon. The COD reduction du

A set of quantitative descriptive and analytical data from the wastewater treatment plant (WWTP) of Sfax, located on the south-east of Tunisia, has been processed by multivariate statistical techniques in order to investigate the evolution of the wastewater quality over a period of 12 years (1984–19