Insight into the microbial distribution and succession and biofouling mechanism in membrane distillation for desulfurization wastewater treatment

Biofouling phenomena in membrane distillation: mechanisms and mitigation strategies

“…(2022) 32 reported a change of plump sphere or short rod to lankier rhabditiform with a microbial community transformation from Algoriphagus, Marinobater, Sulfurihydrogenibium to Chelativorans, Acinetobater, Idiomarina. Change in microbial community was attributed to elevated temperatures and high saline conditions.…”

“…Different modes of MD operations (closed and open loop) affect biolm development differently. 19,32 Liu et al, (2020a) 55 used lake water (Xuanwu Lake) characterized by Proteobacteria, Actinobacteria, Bacteroidetes, and Cyanobacteria to assess biolm development in MD. Early biolm development consisted of genera Acidovorax and Acetobacteraceae, which was replaced by thermophilic Methyloversatilis at stage 2 of ux decay.…”

“…2 .Mechanistic relationship of the salinity, heat, nutrient, and flow stresses on the distribution of bacteria on membrane surfaces during MD operation. 30,32 Fig. 3 .Biofilm progression on membrane surfaces.…”

“…The viability of these strains was explained by their halotolerant mechanism induced by a change in morphology to withstand heat. 32 Under open loop operation, the membrane biolm was dominated by Anoxybacillus, Meiothermus, Schlegelella, Tepidimonas, and Vulcaniibacterium. These examples show the dependence of microorganisms on process parameters.…”

“…64 Dominating chemical cleaning involves removal of inorganic and organic foulants using acidic and basic solutions respectively with limited information on biofouling treatment. 80 Zheng et al , (2022) 32 used HCl and water to remove microbial accumulates from the membrane surface. The process ensured complete removal of Euryarchaeota.…”