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Scaling mitigation in submerged vacuum membrane distillation and crystallization (VMDC) with periodic air-backwash
Julian H.a,b, Ye Y.a, Li H.a, Chen V.a
a UNESCO Centre for Membrane Science and Technology, School of Chemical Engineering University of New South Wales, Sydney, 2052, Australia
b School of Chemical Engineering, Institut Teknologi Bandung, Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2017 Elsevier B.V.The applicability of periodic air-backwash to alleviate crystal fouling in submerged VMDC for inland brine water treatment was investigated in this study. Using polypropylene membrane and modelled inland brine solution at very high concentrations, the effect of air-backwash was evaluated against water production for operation parameters, such as backwash pressure, frequency and duration. At the optimized operation parameters, the flux decline was successfully delayed, resulted in up to 150% and 25% increase in permeate productivity and crystal production, respectively. Incorporation of feed stirring and relaxation mode to submerged VMDC operation with air-backwash further increased the permeate productivity and crystal production by 230% and 32%. Application of chemical cleaning once every 10 h of submerged VMDC operation using 2 wt% of citric acid and 50 wt% of ethanol resulted in sustained performance up to 6 cycles of operation for accelerated tests of highly concentrated feed.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Backwash,Crystal production,Membrane distillation,Operation parameters,Optimized operations,Polypropylene membrane,Sustained performance,Vacuum membrane distillation[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Backwash,Crystallization,Fouling,Membrane distillation,Process relaxation[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This research was supported under Australian Research Council’s Discovery Projects funding scheme ( DP130104048 ). Helen Julian gratefully acknowledges the financial support from Indonesian Endowment Fund for Education .[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.memsci.2017.10.035[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]