Comparative study of suspended and attached growth in membrane bioreactors for wastewater treatment

Ibrahim, Rabialtu Sulihah; Sabeen, Ali Hussein; Noor, Zainura Zainon; Mutamim, Noor Sabrina Ahmad

doi:10.1111/wej.12525

Cited by 13 publications

(6 citation statements)

References 42 publications

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“…Attached‐growth biofiltration technology (AGB) is also known as ‘attached‐growth membrane bioreactor (AGMBR)’ (Hargreaves 2006; Ibrahim et al . 2019). In this system, substrates are transported from rearing units to specialized reactors to perform a specific operation.…”

Section: Types Of Biofloc Systemsmentioning

confidence: 99%

Use of biofloc technology in shrimp aquaculture: a comprehensive review, with emphasis on the last decade

El‐Sayed

2020

Reviews in Aquaculture

154

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In face of the shortage of, and competition with, land and water, the sustainability of aquaculture will have to depend on vertical development, through improving production environments, increasing productivity and enhancing aquaculture technologies. Biofloc technology (BFT) has emerged as new alternative for sustainable aquaculture, which could contribute to FAO Sustainable Development Goals (SDGs) related to food security. Extensive research has been carried out on the development and application of BFT in aquaculture since early 1990s, with emphasis on shrimp culture. Over 40% of BFT publications in aquaculture were directed to shrimp farming. Therefore, I strongly believe that the accumulated knowledge on the applications of BFT in shrimp farming and the experience gained, especially during the last 10 years (2010–2020), are now more than worthy of critical review and analysis. This review summarizes the most update knowledge on the use of BFT in different marine shrimp and freshwater prawn aquaculture. Emphasis has been on factors affecting shrimp production in BFT systems, integration of biofloc‐based shrimp farming with other aquatic farmed species, nutritional value of bioflocs as a natural food or feed ingredient for farmed shrimp and prawn, the application of BFT in different rearing phases, the use of biofloc as a natural probiotics and their effects on shrimp health and physiological functions, economic considerations and commercial applications of BFT‐based shrimp aquaculture, and the major challenges facing shrimp farming in biofloc systems.

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Section: Types Of Biofloc Systemsmentioning

confidence: 99%

Use of biofloc technology in shrimp aquaculture: a comprehensive review, with emphasis on the last decade

El‐Sayed

2020

Reviews in Aquaculture

154

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“…Meanwhile, the presence of sponge and attached growth biomass helped to promote denitrification and TN removal. Ibrahim et al (2020) explained the role of pores on the outside of porous carrier surface to protect biofilm loss and promote the growth of biofilm where the active layer is formed inside and outside of the carrier, leading to the removal of organics and nutrients from wastewater.…”

Section: Resultsmentioning

confidence: 99%

“…The use of small sponge size allowed effective operation of sponge moving carrier bed as it provided a high surface area for biomass attachment as well as a good physical scouring effect on the membrane surface to sustain higher membrane flux (Deng et al, 2014;Guo et al, 2009). This sponge media volume fraction of 10% has also been previously recommended as an optimal condition for the operation of SMB-MBR in terms of treatment performance and membrane fouling control (Guo et al, 2008;Ibrahim et al, 2020).…”

Section: Experimental Systemmentioning

confidence: 99%

Purification of polluted surface water by sponge moving bed membrane bioreactor with short hydraulic retention time operation

Sang

Chiemchaisri

2022

Water & Environment J

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A sponge moving bed membrane bioreactor (SMB‐MBR) was developed for high‐rate biological purification of polluted surface water for nonpotable utilization purposes. The SMB‐MBR contains polyurethane sponge cubes (10% v/v) and submerged hollow fibre membranes in a solid separation compartment and operated under a short hydraulic retention time of 1 h. High organic (96% biochemical oxygen demand [BOD], 85% soluble chemical oxygen demand [COD] and 84% COD) and nitrogen (99% ammonium nitrogen [NH4+], 98% total Kjeldahl nitrogen [TKN] and 87% total nitrogen [TN]) removals were achieved. In the SMB‐MBR, the suspended and attached biomass were allowed to develop under no sludge wastage operation. The co‐existence of heterotrophs, nitrifiers and denitrifiers in the biomass was confirmed under a high oxygen environment. Sustainable operation of SMB‐MBR could be achieved by maintaining stable membrane flux without chemical cleaning for 60 days. This research demonstrates the technical feasibility of applying the SMB‐MBR for clean water production when the polluted surface is the only raw water source.

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“…The relationship between the permeate flux and all these resistances is stated by Equations ( 12) and ( 13) (Ibrahim et al, 2020):…”

Section: Series Resistance Model For a Membranementioning

confidence: 99%

Hybrid electrochemical/membrane couplings processes for enhancing seawater pretreatment and desalination

Aouni,

Tounakti,

Ahmed

et al. 2024

Water Environment Research

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This research focuses on boosting seawater pretreatment and desalination through electrocoagulation (EC)/ultrafiltration (UF) and electrocoagulation (EC)/nanofiltration (NF) processes. We first optimized the key parameters of the EC process using aluminum (Al) and iron (Fe) electrodes. Experimental results show EC process is efficient under optimal conditions. Second, membrane filtration using UF (ES10B), NF(UTC60) and NF(200) as post‐processing steps to the EC process were experimented with. EC(Al)/NF(UTC60) combination resulted in the highest removal rate of organic matter (COD 98%, TOC 95%, fluorescence [humic and fulvic acids] 68%), optical density (OD600nm 75%, turbidity 70%, conductivity 64%). In terms of major ions removal, up to 55% was achieved as NF decreases conductivity, salinity, and hardness. EC(Al)/NF(UTC60) seawater permeate demonstrated the best results in terms of lowest flux decline (J/Jo = 0.9) and fouling, which was realized by resistance in series and recovery factor rate (%). Additionally, NF(UTC60) fouling reversibility led to a longer lifetime and higher recovery factor (93%).Practitioner Points Pretreatment by hybrid processes was experimented with to enhance the saline water treatment. Organic matter (COD 98%, TOC 95%, fluorescence [humic and fulvic acids] 68%) and turbidity were successfully removed. Salinity and hardness (conductivity 64%) were highly reduced by NF. Flux decline, retention rate, and membrane fouling were studied.

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Comparative study of suspended and attached growth in membrane bioreactors for wastewater treatment

Cited by 13 publications

References 42 publications

Use of biofloc technology in shrimp aquaculture: a comprehensive review, with emphasis on the last decade

Use of biofloc technology in shrimp aquaculture: a comprehensive review, with emphasis on the last decade

Purification of polluted surface water by sponge moving bed membrane bioreactor with short hydraulic retention time operation

Hybrid electrochemical/membrane couplings processes for enhancing seawater pretreatment and desalination

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