TY - JOUR ID - 772 TI - Application of Nanofiltration and Reverse Osmosis for Tanning Wastewater JO - International Journal of Environmental Research JA - IJER LA - en SN - 1735-6865 AU - Kiril Mert, B. AU - Kestioglu, K. AD - Sakarya University, Faculty of Engineering, Department of Environmental Engineering, Esentepe, Sakarya, 54187, Turkey AD - Uludag University, Faculty of Engineering and Architecture, Department of Environmental Engineering, Gorukle, Bursa, 16059, Turkey Y1 - 2014 PY - 2014 VL - 8 IS - 3 SP - 789 EP - 798 KW - Nanofiltration KW - reverse osmosis KW - Cr(III) KW - Removal efficiency KW - Cost DO - 10.22059/ijer.2014.772 N2 - The aim to achieve in this study is to recover the Cr(III) and process waters used in thewastewaters of chrome tanning operation by membrane process during leather production. In the treatmentalternative contains, cartridge filter, nanofiltration (NF(NP10)), nanofiltration NF(XN45) and reverse osmosisRO(ACM2) membranes. The raw chrome wastewater from the cartridge filter was given to NF(NP10)membranes with 3 different pressures (12bar, 16bar, 18bar). In this alternative, the most appropriate pressure is determined as 20 bar and the COD, Cr(III) and SS values were detected as, in order, 65%, 49% and 87% for the removal efficiency. 2,7 times more concentration for Cr(III) was achieved in the NF (XN45) membrane, which was used after NF(NP10) membrane and COD, SS, SO4-2, Na+ and conductivity parameters showed removal efficiencies as, 75%, 89%, 95%, 38% and 16%. The permeate from RO(ACM2) membrane was decreased to the discharge criteria’s; (Cr(III):2 mg/L, COD: 200 mg/L). As a result, the investment and the process cost of these membranes are more feasible. UR - https://ijer.ut.ac.ir/article_772.html L1 - https://ijer.ut.ac.ir/article_772_1badda3ab4d440985c8bcb24c9362b6f.pdf ER -