Журнал гражданской и экологической инженерии

The increasing growth of rapid industrial developments causes the formation of huge amount of wastewater loaded with numerous organic compounds unacceptable for the environment and human health as well. Many processes for treating industrial wastewater involve varieties technologies for reduction of toxicity in order to meet environmental-based treatment standards. This article reviews the recent developments and technical applicability of various treatments for the removal of different contaminants from industrial wastewater. A particular focus is given to the factors affecting the selection of appropriate technologies for controlling and managing of a specified industry effluent. Subsequent to the selection of appropriate treatment technology, more pilot-plant scale experiments with real industrial wastewater must be performed on a larger scale. However, there are a very wide variety of technologies for choosing a suitable individual to treat specified wastes; intergradations of more than one technology could be more economic for removal of high strength and toxic industrial. The new integrated technology requires assessing the complete wastewater treatment in order to be reused in the industry itself.

The efficiency of modified cassava peels biomass for the removal of ultramarine blue (UB), has been thoroughly investigated in this study. The effect of changing absorbent concentration, UB concentration, contact time and pH had been studied. Maximum absorption occurred at pH of 10.There was a general increase in UB absorption with increase in absorbent concentration, UB concentration, time and temperature, respectively. The pseudo second order equation with R2 of 0.952, provided a better description of the adsorption process than the first order, showing that adsorption occurred mainly due to intra-particle diffusion. The Freundlich and Langmuir isotherms were applied to the equilibrium data. The adsorption capacity (Qm) obtained from the Langmuir isotherm was 0.952 (mg/g).The separation factor RL was obtained as 0.663 is less than unity, indicating that modified cassava peels biomass is a good absorbent for UB. The assessed thermodynamic parameters showed that the adsorption of UB on modified cassava peels biomass was endothermic.