Towards practical integration of MBR with electrochemical AOP: Improved biodegradability of real pharmaceutical wastewater and fouling mitigation

Gharibian, Soorena; Hazrati, Hossein

doi:10.1016/j.watres.2022.118478

Cited by 32 publications

(53 citation statements)

References 57 publications

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“…The cake layer resistance (Rc) of CMBR and BMBR is the key element of the filtration resistance. This is consistent with previous studies which also suggested that the membrane sludge cake layer representing the reversible fouling dominates the membrane filtration resistance [ 50 , 51 ]. The lower Rp/Rt from BMBR compared to CMBR was observed, indicating that BMBR exhibited lower irreversible fouling caused by pore clogging owing to the lower SMP concentration [ 51 ].…”

Section: Resultssupporting

confidence: 93%

Biochar Addition in Membrane Bioreactor Enables Membrane Fouling Alleviation and Nitrogen Removal Improvement for Low C/N Municipal Wastewater Treatment

Wang

Shen

et al. 2023

Membranes

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Membrane bioreactors (MBRs) are frequently used to treat municipal wastewater, but membrane fouling is still the main weakness of this technology. Additionally, the low carbon-nitrogen (C/N) ratio influent has been shown to not only increase the membrane fouling, but also introduce challenges to meet the effluent discharge standard for nitrogen removal. Herein, the authors addressed the challenges by adding cost-effective biochar. The results suggested that the biochar addition can enable membrane fouling alleviation and nitrogen removal improvement. The reduced membrane fouling can be ascribed to the biochar adsorption capacity, which facilitates to form bigger flocs with carbon skeleton in biochar as a core. As a result, the biochar addition significantly altered the mixed liquor suspension with soluble microbial product (SMP) concentration reduction of approximately 14%, lower SMP protein/polysaccharide ratio from 0.28 ± 0.02 to 0.22 ± 0.03, smaller SMP molecular weight and bigger sludge particle size from 67.68 ± 6.9 μm to 113.47 ± 4.8 μm. The nitrogen removal is also dramatically improved after biochar addition, which can be due to the initial carbon source release from biochar, and formation of aerobic–anaerobic microstructures. Microbial diversity analysis results suggested more accumulation of denitrification microbes including norank_f__JG30-KF-CM45 and Plasticicumulans. Less relative abundance of Aeromonas after biochar addition suggested less extracellular polymer substance (EPS) secretion and lower membrane fouling rate.

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Section: Resultssupporting

confidence: 93%

Biochar Addition in Membrane Bioreactor Enables Membrane Fouling Alleviation and Nitrogen Removal Improvement for Low C/N Municipal Wastewater Treatment

Wang

Shen

et al. 2023

Membranes

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“…Natural Textile industries [41,[46][47][48][49][50] Slaughterhouses [41,51,52] Landfill leachates [40,41,[53][54][55][56] Pharmaceutical industries [13] Table 1.…”

Section: Type Of Water Referencesmentioning

confidence: 99%

“…In recent years, the number of studies using fluorescence techniques for the characterization of dissolved organic matter (DOM) in natural and wastewaters has significantly increased [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. There are several reasons for this fact: fluorescence is a fast, sensitive, and nondestructive analytical technique that requires small volumes of the sample.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, global parameters such as biochemical oxygen demand (BOD) and chemical oxygen demand (COD) provide no information on the structure and properties of DOM, in addition to being time-consuming methods (5 days and 2 hours, respectively). Other more sophisticated techniques, such as gas chromatography-mass spectrometry (GC/MS), infrared spectroscopy (FTIR), and 1 H-and 13 C-nuclear magnetic resonance (NMR), require complicated and laborious procedures for extraction-purification of the aqueous samples. Moreover, when analyzing complex matrices, such as wastewaters, FTIR, and NMR signals, usually overlap into broad and poorly resolved bands, thus making the interpretation of the spectra difficult [17].…”

Section: Introductionmentioning

confidence: 99%

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Application of Excitation-Emission Matrix Fluorescence (EEMF) in the Wastewater Field

Rodríguez-Vidal¹

2023

Fluorescence Imaging - Recent Advances and Applications

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Fluorescence is a versatile and useful analytical technique for the analysis of waters, both natural waters (freshwaters and marine waters) and wastewaters (urban wastewaters and industrial effluents). Among the various fluorescence techniques currently available, excitation-emission matrix fluorescence (EEMF) is the most used nowadays since it provides comprehensive information on the dissolved organic matter (DOM) present in water. EEMF spectra can be represented either in the form of a 3D-graph or a 2D-contour map and fluorescence peaks can be studied by the fast and simple peak-picking method (more suitable for routine measurements in water treatment plants, allowing a rapid response in case of potential problems in the sequence of treatment) or using mathematical tools such as PARAFAC (more suitable for research purposes and accurate identification of the fluorophores). The EEMF peaks commonly found in waters are peaks A and C (humic substances), peaks B1, B2, T1, and T2 (protein-like peaks), and peak M (microbial-like peak). EEMF was first applied to the characterization of natural waters, but in recent years, more attention is being paid to the wastewater field. Urban wastewaters have been mostly studied, whereas there are fewer studies focused on industrial effluents. This chapter provides a brief review of these EEFM applications.

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“…Based upon the literature reviewed, it is apparent that AnMBRs have been extensively studied for the treatment of either synthetized and real wastewaters at the laboratory and pilot scales. It can be indicated that AnMBRs technology was demonstrated to be particularly effective in the treatment of such wastewaters as: municipal, e.g., [42,47], domestic, e.g., [48,49], pharmaceutical, e.g., [50,51], food, e.g., [52,53], textile, e.g., [54,55] and distillery, e.g., [56,57]. Among them, both municipal and domestic wastewaters are the most abundant.…”

Section: Introductionmentioning

confidence: 99%

Energy-Efficient AnMBRs Technology for Treatment of Wastewaters: A Review

Tomczak

Gryta

2022

Energies

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In recent years, anaerobic membrane bioreactor (AnMBRs) technology, a combination of a biological reactor and a selective membrane process, has received increasing attention from both industrialists and researchers. Undoubtedly, this is due to the fact that AnMBRs demonstrate several unique advantages. Firstly, this paper addresses fundamentals of the AnMBRs technology and subsequently provides an overview of the current state-of-the art in the municipal and domestic wastewaters treatment by AnMBRs. Since the operating conditions play a key role in further AnMBRs development, the impact of temperature and hydraulic retention time (HRT) on the AnMBRs performance in terms of organic matters removal is presented in detail. Although membrane technologies for wastewaters treatment are known as costly in operation, it was clearly demonstrated that the energy demand of AnMBRs may be lower than that of typical wastewater treatment plants (WWTPs). Moreover, it was indicated that AnMBRs have the potential to be a net energy producer. Consequently, this work builds on a growing body of evidence linking wastewaters treatment with the energy-efficient AnMBRs technology. Finally, the challenges and perspectives related to the full-scale implementation of AnMBRs are highlighted.

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Towards practical integration of MBR with electrochemical AOP: Improved biodegradability of real pharmaceutical wastewater and fouling mitigation

Cited by 32 publications

References 57 publications

Biochar Addition in Membrane Bioreactor Enables Membrane Fouling Alleviation and Nitrogen Removal Improvement for Low C/N Municipal Wastewater Treatment

Biochar Addition in Membrane Bioreactor Enables Membrane Fouling Alleviation and Nitrogen Removal Improvement for Low C/N Municipal Wastewater Treatment

Application of Excitation-Emission Matrix Fluorescence (EEMF) in the Wastewater Field

Energy-Efficient AnMBRs Technology for Treatment of Wastewaters: A Review

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