Research Abstracts

The electrosorption of different salt solutions with carbon nanotube and nanofibre (CNT–CNF) composite film electrodes was studied. The electrochemical properties of CNT–CNF film were systematically investigated using ac impedance spectroscopy and cyclic voltammetry, and it was found that capacitive

Approximately 857,000 tonnes of tea is produced in India per year, which is 27.4% of total world production. After processing, tea factory waste is about 190,400 tonnes. Batch adsorption studies have been carried out for evaluating the suitability of tea factory waste as a low-cost adsorbent for the

The characteristics and behaviors of soluble microbial products (SMP) in sequencing batch membrane bioreactors (SBMBRs) were investigated at various sludge retention times (SRTs). SMP concentrations in SBMBRs reached a minimum at SRT of 40 days and were consistently higher than those in effluents. T

A comprising thermodynamic approach is presented to investigate the behavior of saline solutions with respect to CaCO3, CaSO4 and SiO2 scaling in water treatment processes. The Pitzer activity coefficient model is used to describe the aqueous species activities and the corresponding equilibrium reac

Separation of phosphoric acid from industrial rinsing water containing dissolved aluminium was evaluated with four commercial flat sheet nanofiltration membranes. The MPF34 (Koch) and Desal-5 DK (GE Osmonics) membranes effectively retained aluminium. The aluminium removal efficiency of the NF membra

The thermal performance of the refrigerant-charged integrated solar water heater was analyzed to show its applicability in Nigeria, using data of several sunny and cloudy days. This unit, having three identical small-scale solar water heating systems using refrigerants R-134a, R12, and ethanol, was

The ability of untreated local rubber wood sawdust (RWS) to remove Cr(VI) was carried out under a bench-scale shaking condition by varying parameters such as initial Cr(VI) concentrations, adsorbent dosage, pH, temperature and eluting agent. Complete Cr(VI) removal was achieved at pH less than 2, in

Microporous asymmetric PVDF hollow fiber membranes were prepared from commercially available polyvinylidenefluoride and N,N-dimethylacetamide (DMAc) by the dry-jet wet phase inversion process. Lithium chloride and water were used as additives. Mean pores size and effective surface porosity were eval

An aromatic polymide hollow fibre membrane designed for a reverse osmosis system of 35,000 ppm total dissolved solids in take water was subjected to a low salinity of around 3000 ppm. The applied pressure and feed water temperature were varied to study their effects on permeation and salt rejection.

The treatment of wastewater containing suspended solids (SS) is an important topic related to strict environmental regulation and wastewater reuse in the preparation of carclazyte catalyst. This study indicated that the addition of an inorganic flocculant, anhydrous aluminum sulphate (AAS), to waste