The aim of this study was the assessment of reduction of chemical oxygen demand (COD) and biological oxygen demand (BOD) of wastewater from coffee processing plant using activated carbon made up of Avacado Peels. The complete study was done in batch mode to investigate the effect of operating parameters. The results of the COD and BOD concentration reduction with avocado peel carbon (APC) and commercial activated carbon (CAC) were compared and optimum operating conditions were determined for maximum reduction. Adsorption isotherm was also studied besides the calculation of optimum treatment parameters for maximum reduction of COD and BOD concentration from effluent of the coffee processing plant. The maximum percentage reduction of COD and BOD concentration under optimum operating conditions using APC was 98.20% and 99.18% respectively and with CAC this reduction was 99.02% and 99.35% respectively. As the adsorption capacity of APC is comparable with that of CAC for reduction of COD and BOD concentration, it could be a lucrative technique for treatment of domestic wastewater generated in decentralized sectors.
NB: KINDLY ACCESS THIS LINK , IT MAY GIVE YOU AMPLE INFO TO THE EXCAT PROTOCOL. https://www.ncbi.nlm.nih.gov/pubmed/17493806
Dear Hussein,,,,,, recently i worked with tannery wastewater..... in tanning operation lots of chemicals are using during leather processing which are responsible for COD in wastewater. i found highest 21,600 mg/l and lowest 2,490 mg/l..