Biofouling of seawater reverse osmosis membranes caused by dispersal of planktonic particulate bacterial aggregates (protobiofilms) from rotary energy recovery devices

Winters, Harvey; Eu, Hong Gay; Li, Sheng; Alpatová, Alla; Alshahri, Abdullah H.; Nasar, Nasreen; Ghaffour, Noreddine

doi:10.1016/j.desal.2022.115647

Cited by 10 publications

(4 citation statements)

References 45 publications

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“…Sun 28 indicated that the pump selection could be optimized to improve this problem, with a total energy recovery efficiency of 97.1%. To address the problem of membrane biofouling in seawater RO plants, Winters Harvey et al 93 found that bacterial aggregates are dispersed from the rotating ERD. The flow rate of seawater through the rotary energy recovery unit is an important factor in the dispersal of bacterial aggregates to the RO, and reducing the flow rate can lead to a reduction in membrane biofouling formation.…”

Section: Types Of Pressure Energymentioning

confidence: 99%

A review of the energy recovery and energy pressure of liquid

Zhang

Xue

et al. 2023

Energy Science & Engineering

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Due to the rapid development of today's industry, it not only greatly accelerates the consumption of energy, but also causes serious pollution to the environment. Therefore, reducing energy waste and recovering energy has become an important research direction today. This paper introduces the future development trend of renewable energy, discusses the progress of recovery of nonpolluting energy such as marine, bioenergy and thermal energy, and analyzes the efficiency and social benefits of various types of energy recovery. Energy recovery methods for natural gas pipelines are briefly analyzed, and current research advances in energy pressure recovery devices are provided, leading to a summary of methods to improve the efficiency of fluid energy recovery. Finally, it is concluded that although the current energy sources are diversified, the most valued energy sources at present and in the future should be solar energy and ocean, which are infinitely recyclable. This paper will benefit researchers to further understand and study the various aspects of energy recovery.

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Section: Types Of Pressure Energymentioning

confidence: 99%

A review of the energy recovery and energy pressure of liquid

Zhang

Xue

et al. 2023

Energy Science & Engineering

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“…It was found that the RO modules were ideal for desalination plants as the required operational maintenance was less as compared to the commercial membranes. But the RO-based plants can be affected by the presence of “protobiofilms,” which results in membrane biofouling of such plants, as discussed by Winters et al 27 . This can be reduced by decreasing the flow velocity into the Rotary Energy Recover Devices (RERD), which slows down the rate of biofilm formation and rate of RERD biofilm dispersal.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of permeate flux in reverse osmosis by varying strand geometry

Shoukat

Idrees

Sajid

et al. 2022

Sci Rep

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In regions with limited potable water availability, membrane desalination is being employed to filter water using a pressure-driven approach. Because of the high energy consumption required to produce the pressure differential needed for this method, researchers have been trying different geometric designs of spacer filaments to enhance the amount of permeate flux in terms of energy utilization. The purpose of spacer filaments is to support membranes structurally and induce turbulent mixing in spiral wound membrane desalination. In this paper, the improvement of mass transfer in desalination driven by reverse osmosis has been studied using Computational Fluid Dynamics (CFD) with the introduction of spiral wound membranes that are lined with spacer filaments in a zig-zag formation having alternating diameters for strands. The fluid flow characteristics for a 2-dimensional geometric model were resolved using the open-source program OpenFOAM by changing the Reynolds number to just before the inception of instabilities. Ratios of alternate strand diameters were also varied between one and two. Based on a detailed analysis of velocity contours, pressure distribution, wall shear stresses, and steady-state vortex systems, the research findings offer guidance for employing alternating strand design in zig-zag formation for optimum mass transfer and minimal pressure drop when accounting for concentration polarization.

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“…[ 1 , 2 , 3 , 4 , 5 ]. Additionally, biofilms cause extensive damage to the marine environment and agriculture [ 6 , 7 , 8 , 9 , 10 ]. There has thus been considerable interest in the biofilm formation mechanism [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Targeted Anti-Biofilm Therapy: Dissecting Targets in the Biofilm Life Cycle

Liu

Xie

et al. 2022

Pharmaceuticals

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Biofilm is a crucial virulence factor for microorganisms that causes chronic infection. After biofilm formation, the bacteria present improve drug tolerance and multifactorial defense mechanisms, which impose significant challenges for the use of antimicrobials. This indicates the urgent need for new targeted technologies and emerging therapeutic strategies. In this review, we focus on the current biofilm-targeting strategies and those under development, including targeting persistent cells, quorum quenching, and phage therapy. We emphasize biofilm-targeting technologies that are supported by blocking the biofilm life cycle, providing a theoretical basis for design of targeting technology that disrupts the biofilm and promotes practical application of antibacterial materials.

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Biofouling of seawater reverse osmosis membranes caused by dispersal of planktonic particulate bacterial aggregates (protobiofilms) from rotary energy recovery devices

Cited by 10 publications

References 45 publications

A review of the energy recovery and energy pressure of liquid

A review of the energy recovery and energy pressure of liquid

Numerical analysis of permeate flux in reverse osmosis by varying strand geometry

Targeted Anti-Biofilm Therapy: Dissecting Targets in the Biofilm Life Cycle

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