Research Abstracts

The present study is concerned with the sulfidation treatment of metal reagents of Cu(OH)2, ZnO or Ni(OH)2 as a means of metal resources recovery. The sulfidation was conducted separately for each reagent by contacting the reagent with Na2S solution (S2– to Me2+ molar ratio of 1.5) for 1 h to 7 d. T

In this study wastewater management options were investigated in terms of sustainability for an industry manufacturing 300 tons of energy drinks daily. A two stage management approach covering both in-plant control and end-of-pipe treatment was adopted for the industry under examination. The charact

The efficiency of packed bed reactors on the biological degradation of phenol was studied in this work. In particular, the effect of the specific surface area of the support material and the operating mode on biodegradation efficiency were determined. Phenol removal was studied using two pilot-scale

In this study, the coagulation process is evaluated in treatment of municipal wastewater on the basis of organic material (e.g. chemical oxygen demand, COD) and suspended solids (TSS) removal efficiency. Alum-coagulation was optimized on the samples (24 sampling campaigns) taken from 4 wastewater tr

Organized industrial estates (OIEs) have been supposed to an alternative to industrial pollution control, in particular, in developing countries. However, a wastewater management strategy should be well established in the planning phase of them to save investment and operational costs of the central

In this study the wastewaters originating from solid waste transport stations that are established to compress the collected solid wastes from households in order to ease further transportation to final disposal sites (e.g. sanitary landfills) were investigated in terms of characterization and treat

In this work, removal of acid orange 7 (AO7) by powdered activated carbon, from aqueous solutions with initial concentrations of 150 ppm to 350 ppm and initial pH values of 2.8, 5.8, 8.0 and 10.5 at 25°C was studied. Experiments were done in batch mode and the experimental solutions were agitated pe

Reactive dyes are extensively used in the last years due to their superior performance, but they are environmentally hazardous. In the present work, the decolorization and degradation of commercial reactive azo dyes (Procion Navy H-exl, Procion Crimson H-exl and Procion Yellow H-exl) were studied us

Since stainless steel must be rinsed with water after pickling operation with mixtures of nitric and hydrofluoric acids, the present investigation was undertaken to define a major step towards the close loop circulation of water in steel plant. This can be done by a new procedure for removing also n

In the context of gold extraction, leaching is the dissolution of the metal or even a mineral in a liquid phase. Thus, it is of a primary concern the dissolution of gold in an aqueous solution, operation which requires both a complexant and an oxidant to achieve acceptable leaching rates and yields.