Abstract
This work deals with the preparation of activated carbon (AC) from Korch ( Erythrina brucei ) sawdust (EB), Bamboo ( Arundinaria alpina ) sawdust (AA), and Cassava peel ( Manihot esculenta ) powder (ME) to remove methylene blue (MB) from aqueous solution. The effect of temperature, chemical impregnation (H 3 PO 4 , ZnCl 2 , KOH and H 2 SO 4 ) were done. The optimum temperature used to prepare activated carbon of EB, AA and ME were700 , 400 and 600 respectively. High surface area AC was obtained by chemical activation of biomaterial with H 3 PO 4 . The effect of various process parameters like pH, contact time, adsorbent dose on the efficiency MB removal was investigated. The optimum pH value and contact time for AC of EB, AA and ME was determined as 6, 5, 4 and 40, 50, 60 min respectively. The optimum adsorbent dose of EB, AA and ME were determined 0.04, 0.06 and 0.12g respectively in 25ml of solution. Thermodynamic analysis asserted endothermic and spontaneous nature of the system. Equilibrium data were represented better by Langmuir model than Freundlich which describes monolayer adsorption. The linear regression analysis of kinetic data confirmed that Pseudo-second order rate expression. Keywords : activated carbon, E. brucei , A. alpina , M. esculenta , methylene blue. DOI : 10.7176/FSQM/86-03 Publication date : April 30 th 2019
Highlights
Liquid waste effluents released from textiles, cosmetics, printing, dying, food processing and paper making industries contains many different organic pollutant dyes
Studies were conducted to investigate the potential of activated carbon (AC) prepared from EB, AA and ME as adsorbents for the removal of methylene blue (MB) from aqueous solutions
For AC of AA the result was best fitted with Freundlich model whereas for AC of EB and ME it was best fitted with Langmuir model
Summary
Liquid waste effluents released from textiles, cosmetics, printing, dying, food processing and paper making industries contains many different organic pollutant dyes. Discharge of these colored pollutants presents a major environmental problem because of their toxic and carcinogenic effects on living organisms Textile wastewater is characterized by high chemical oxygen demand, low biodegradability and high salt content and is a source of pollution related to color. The treatment method selected for these organic pollutants will depend primarily on the pollutant concentration, the effluent flow and the discharge body. Synthetic dyes present high solubility and low biodegradability. For these reasons, conventional physiochemical techniques are not suitable for synthetic dye removal. Adsorption has significant advantages: low operating cost, high flexibility, simple design and operation, easy automation, and the capability to operate at a very low concentration (Cooper, P. (1995)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
