A hybrid adsorption membrane process for removal of dye from synthetic and actual wastewater

In this work, three new configurations in a hybrid adsorption-membrane technique (HAMT) were adopted for the removal of methyl green dye (MG) from synthetic wastewater and tested the capability of HAMT on real sample from textile industry. The hybrid process involved the simultaneous activity of mesoporous material MCM-41 as an adsorbent, coupled with an ultrafiltration membrane (UF). The effects of the feed flow rate (100-200 ml/min), MG concentration (10-50 mg/l) and MCM-41 dose (0.008-0.06 g) were tested for each system configuration. The results proved the significant effect of the feed flow rate, feed concentration, and MCM-41 dose on both permeate flux and MG rejection. The rustles showed that the optimum configuration performance was in the following order: Batch filtration with the retentate full recycled > Semi-batch filtration > Single-pass continuous filtration. Where the highest permeate flux and rejection coefficient were 42.5 L/hr. m2 and 94.79 % for Batch filtration. This technique proved to be highly efficient in actual wastewater treatment by applying the resulted optimum conditions. Dye removal from actual sample more than 97 % and permeate flux equal 39 L/hr. m(2) was achieved, proving that the HAMT is effective in removing dyes from synthetic and actual wastewater.