Biological performance and fouling mitigation in the biochar-amended anaerobic membrane bioreactor (AnMBR) treating pharmaceutical wastewater

Chen, Linlin; Cheng, Peijin; Lu, Ye; Chen, Hui; Xu, Xiangyang; Zhu, Liang

doi:10.1016/j.biortech.2020.122805

Cited by 95 publications

(19 citation statements)

References 48 publications

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“…The membranes with smoothed surfaces were less prone to fouling; therefore, flux decline over time was not observed in this study. Previous studies [ 7 , 21 , 26 , 41 ] also reported that the loosely bound EPS had a large effect on the membrane pores for adsorption and deposition of organic and inorganic compounds. In addition, the EPS formation around the biomass granule induced the surface roughness increase, especially at a high loading rate [ 33 , 34 ].…”

Section: Resultsmentioning

confidence: 94%

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Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment

et al. 2021

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The characteristics of foulant in the cake layer and bulk suspended solids of a 10 L submerged anaerobic membrane bioreactor (AnMBR) used for treatment of palm oil mill effluent (POME) were investigated in this study. Three different organic loading rates (OLRs) were applied with prolonged sludge retention time throughout a long operation time (270 days). The organic foulant was characterized by biomass concentration and concentration of extracellular polymeric substances (EPS). The thicknesses of the cake layer and foulant were analyzed by confocal laser scanning microscopy and Fourier transform infrared spectroscopy. The membrane morphology and inorganic elements were analyzed by field emission scanning electron microscope coupled with energy dispersive X-ray spectrometer. Roughness of membrane was analyzed by atomic force microscopy. The results showed that the formation and accumulation of protein EPS in the cake layer was the key contributor to most of the fouling. The transmembrane pressure evolution showed that attachment, adsorption, and entrapment of protein EPS occurred in the membrane pores. In addition, the hydrophilic charge of proteins and polysaccharides influenced the adsorption mechanism. The composition of the feed (including hydroxyl group and fatty acid compounds) and microbial metabolic products (protein) significantly affected membrane fouling in the high-rate operation.

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Section: Resultsmentioning

confidence: 94%

“…The EPS concentration was not correlated to the biomass concentration, but EPS content increased with the increase in OLR in the reactor. The increase in OLR may have promoted sludge aggregation [ 26 , 27 ]. As shown in Figure 2 a, high concentrations of protein were produced rather than polysaccharide.…”

Section: Resultsmentioning

confidence: 99%

Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment

et al. 2021

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“…Temperature plays an important role in biogas production [3,54,104]. It has been reported that the activity of methanogenic archaea is affected at psychrophilic temperatures, decreasing the amount of the biogas produced [54].…”

Section: Production Of Methane/biogasmentioning

confidence: 99%

Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment: A Literature Review

et al. 2021

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Currently, there is growing scientific interest in the development of more economic, efficient and environmentally friendly municipal wastewater treatment technologies. Laboratory and pilot-scale surveys have revealed that the anaerobic membrane bioreactor (AnMBR) is a promising alternative for municipal wastewater treatment. Anaerobic membrane bioreactor technology combines the advantages of anaerobic processes and membrane technology. Membranes retain colloidal and suspended solids and provide complete solid–liquid separation. The slow-growing anaerobic microorganisms in the bioreactor degrade the soluble organic matter, producing biogas. The low amount of produced sludge and the production of biogas makes AnMBRs favorable over conventional biological treatment technologies. However, the AnMBR is not yet fully mature and challenging issues remain. This work focuses on fundamental aspects of AnMBRs in the treatment of municipal wastewater. The important parameters for AnMBR operation, such as pH, temperature, alkalinity, volatile fatty acids, organic loading rate, hydraulic retention time and solids retention time, are discussed. Moreover, through a comprehensive literature survey of recent applications from 2009 to 2021, the current state of AnMBR technology is assessed and its limitations are highlighted. Finally, the need for further laboratory, pilot- and full-scale research is addressed.

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“…In recent decades, numerous researchers have explored the efficiency of membrane bioreactor (MBR) in the antibiotic pollution treatment that evidenced that MBR is operational in handling antibiotic pollution [14].…”

Section: Biological Treatment (Bt)mentioning

confidence: 99%

“…The blend of conventional anaerobic biological skill and advanced membrane technique expertise holds the benefits of greater organic elimination, less energy ingestion, and biogas retrieval. In unison, effectual parting of hydraulic retention time (HRT) and the sludge retention time (SRT), less generation of bio-solids and greater permeate value are personified in AnMBR owing to film segment [14].…”

Section: Hybrid Systems (Hss)mentioning

confidence: 99%

Metal Organic Frameworks (MOFs) as Formidable Candidate for Pharmaceutical Wastewater Treatment

Ahmad

Abbasi

Nazir

et al. 2021

Inorganic-Organic Composites for Water and Wastewater Treatment

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In recent years, the pharmaceutical field has significantly achieved magnificent progress owing to the necessities of human health and life; however, it also led to drastic environmental issues. The existence of pharmaceuticals in water bodies, which could cause adverse effects on human beings and environment, rose up distress worldwide. The pharmaceutical components found in water bodies have mainly two origins: manufacturing procedures in pharmaceutical industry and common usage of pharmaceutics. The essence of pharmaceutical wastewater (PWW) is intricate, including large amount of organic matter, high salt, microbial toxicity, and non-biodegradable. In sight of water scarcity means, it is essential to figure out and expand techniques for pharmaceutics derived wastewater in water management. Nevertheless, numerous treatment methods have been established to serve pharmaceutical wastewater including biological treatments, membrane technologies, hybrid technologies, advanced oxidation processes, absorption methods, etc. Recently, metal organic frameworks (MOFs), metallic ions clusters linked with organic bridging linkers, have been utilized in number of uses such as storage, separation, sensing, catalysis, adsorption, and many others. The viability of MOFs toward wastewater treatment (WWT) for various pollutants is fundamentally because of the extreme porosity, discrete pore structure, and superficial modification. This chapter highlights the origin and treatment of pharmaceutical wastewaters via the utilization of MOFs and their hybrid systems. A brief perception of the future work in the field has also been discussed.

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Biological performance and fouling mitigation in the biochar-amended anaerobic membrane bioreactor (AnMBR) treating pharmaceutical wastewater

Cited by 95 publications

References 48 publications

Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment

Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment

Anaerobic Membrane Bioreactors for Municipal Wastewater Treatment: A Literature Review

Metal Organic Frameworks (MOFs) as Formidable Candidate for Pharmaceutical Wastewater Treatment

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