Narayana Saibaba K.V and P. King
Waste water from cosmetic, textile and dye industry is one of the most serious environmental problems. Colors present in water even in small quantities can make it unusable and reduces aesthetic value of water. Dyes present in wastewater prevent reoxygenation in water by inhibiting the penetration of sunlight and hence disturb the biological activity of aquatic systems. Moreover, most dyes are toxic and harmful to human health. Therefore, treatment or decorization of these dyes from water is very important before their discharge into ecosystems. Turning agricultural waste into a value added product to generate income is a pet dream for many farmers and industrialists. Hence, the present work is aimed to generate income to farmers from waste resource and reduce the cost of water treatment and help for environment balance. The main objective of this work was to investigate the biosorption of dyes using agricultural waste. To achieve this, a simple, economical and green methodology has been used for the removal of acid dye from wastewater using Vigna unguiculata bean cover adsorbent. The influence of process parameters such as temperature, pH, adsorbent dosage, contact time and initial dye concentration were examined. Biosorption data was successfully described with Langmuir and Freundlich isotherms. Thermodynamics of dye removal process were studied and adsorption kinetics was also inspected using pseudo first order and pseudo second order kinetic models. Intra particle diffusion studies were also carried out using Weber-Morris model. Analysis of results was done using Artificial Neural Networks and Response Surface Methodology. Analysis of results revealed that parameters studied were influencing the dye binding behavior. Characterization of adsorbent was also done using SEM, FTIR and Nitrogen absorption method. The results obtained through these methods further concrete the results obtained from the adsorption studies experiments. In overall the results showed that adsorbent used is highly effective for the removal of dyes from waste water.
Narayana Saibaba K.V. has completed his B.Tech in Chemical Engineering with Biotechnology as specialization from Andhra University and Masters in Chemical Engineering with Petroleum Refining Engineering as elective from Andhra University. He also completed MBA with dual specialization in HRM and Finance. He is currently pursuing his Ph.D under the guidance of Prof. P. King. He has published more than 15 papers in international journals of repute. His papers also published in the CHEMCON. Prof. P. King published more than 100 papers in reputed journals and serving as editorial board member of several repute journals.