Non-chemical biofouling mitigation systems for seawater cooling tower using granular activated carbon biofiltration and ultrafiltration

Al‐Bloushi, Mohammed; Raju, Arun Kumar S.; Lee, Jieun; Oh, Yumin; Jeong, Sanghyun

doi:10.1016/j.jece.2021.106784

Cited by 8 publications

(4 citation statements)

References 26 publications

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“…Both reversible and irreversible fouling for one cycle, Rrev(n) and Rirr(n), presented linear increase over multiple cycle filtration [13]. Rrev was relatively consistent for all the variation experiments, organic foulants accumulated on the surface of UF during the filtration process, therefore regularly backwash (filtration cycle) to reduce the risk of concentration polarization [10,11,12,13].…”

Section: Direct Uf Filtration Membrane In Pilot Scale Testmentioning

confidence: 71%

“…The dose of Activated Carbon for both PAC and GAC were performed at doses of 150 mg/L and 250 mg/L [11] with bed height of 0.5 m [12]. The PAC/GAC was dosed directly into the feed pipe prior to the modules (hydraulic retention time <30s) [9,11,12]. The hybrid experiments were carried out in a continuous system with an integrated panel control.…”

Section: Hybrid Activated Carbon/ultrafiltrationmentioning

confidence: 99%

“…From 4 th to 8 th cycles, there was constant decline in normalized permeability for both dose variants, especially when entering the 5 th (318 L/m 2 ) of 12%-20% due to entry pressure over the TMP limit (exceed 1.2 bar). Both PAC and GAC worked effectively to control an increase in pressure differential (TMP), as detailed at figure 4a for PAC and 4b for GAC [12,14]. Further analysis of the membrane resistance aims to analyze the reversible and irreversible fouling presented linear increase over multiple cycle filtration.…”

Section: Hybrid Activated Carbon/ultrafiltrationmentioning

confidence: 99%

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Combination of activated carbon/ultrafiltration as pre-treatment for seawater reverse osmosis plants

Budiningsih,

Laksono,

Adityosulindro

et al. 2024

E3S Web of Conf.

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Seawater Reverse Osmosis (SWRO) is a common technology to treat seawater to comply high freshwater demand. Currently, the main issue of seawater/brackish water as the potential sources for drinking water is vulnerable to organic pollutants. An effective pre-treatment is crucial to maintain the efficiency of SWRO for sustainable operation. Optimization of the process could be performed by a hybrid membrane combination using commercial Activated Carbon (AC) with based material coconut shell/coal and Ultrafiltration membrane (UF). For hybrid process, the activated carbon was continuously dosed into the pilot scale filtration employing PES Hollow Fiber membrane with active area of 4 m² and average pore size of 10 nm that represents a real operation filtration process (i.e., filtration flux, filtration time, backwashing, and cleaning in place), and was performed until 8 filtration cycle sequence. This study investigated membrane performance with combination technique PAC/UF and GAC/UF in Pilot scale experiments within resistance membrane and retention membrane. Combination of Activated Carbon/Ultrafiltration showed synergistic effects in the removal of organic content for COD 40%-96%, UV-VIS 43%-92% and Turbidity 73%-99%. High removal of organics pollutants (COD, UV-VIS and Turbidity) was attributed to small average pore distribution of Activated Carbon (<10 µm) that increase adsorption process. Moreover, hybrid Activated Carbon/UF adsorption kinetics can reduce filtration times to achieved optimal retention. Related to membrane performance, hybrid AC/UF resulted in less permeability declines almost double in first two filtration cycle and slightly less permeability decline until fifth cycle in comparison with single UF process. Better membrane performance can furtherly be explained from less irreversible fouling in case of AC/UF. Combination AC/UF enhanced the control of Irreversible fouling and resulted in better filtration performance as well as higher organic substance removal. Therefore, hybrid AC/UF could be seen as an effective system as pretreatment for SWRO.

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Section: Direct Uf Filtration Membrane In Pilot Scale Testmentioning

confidence: 71%

Section: Hybrid Activated Carbon/ultrafiltrationmentioning

confidence: 99%

Section: Hybrid Activated Carbon/ultrafiltrationmentioning

confidence: 99%

See 1 more Smart Citation

Combination of activated carbon/ultrafiltration as pre-treatment for seawater reverse osmosis plants

Budiningsih,

Laksono,

Adityosulindro

et al. 2024

E3S Web of Conf.

View full text Add to dashboard Cite

show abstract

“…The fact is that warm water and the presence of air are a favorable environment for the growth of aerobic microorganisms, fouling layers appear on the heat exchange surface, which sharply reduces the cooling efficiency of thermal equipment [1,2]. There are several methods of biofouling control technology: the use of chemicals, bio-filtration and frequent maintenance, which leads to increased economic costs for enterprises [3][4][5]. Therefore, the best option is to create conditions under which the growth of microorganisms will be particularly heavy.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on heat power of wet and pipe sections of wet/dry cooling tower with extended surface pipe exchanger

Madyshev,

Kharkov,

Mayasova

et al. 2024

J. Phys.: Conf. Ser.

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A hybrid system for recirculated water cooling of industrial enterprises is proposed. The major feature of the cooling system is a wet/dry cooling tower with an inner pipe exchanger. To enhance the heat transfer process, the outer surface of the heat exchanger pipe has fins. Design and function of the experimental setup are described. The goal of this work is to evaluate experimentally the heat power of the wet and pipe sections of the cooling tower. Results were presented as dependencies of the heat power in the wet/dry cooling tower on the mean gas velocity (from 0.89 to 3.20 m/s) and the ratio of the weight flow rates of the gas/liquid phases at various irrigation rates (13.7-35.6 m3/(m2.h)).

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Droplet Separation Efficiency of Vortex Chamber for Circulating Water Cooling

Madyshev,

Dmitrieva,

Sannikov

et al. 2024

Lecture Notes in Mechanical Engineering

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Non-chemical biofouling mitigation systems for seawater cooling tower using granular activated carbon biofiltration and ultrafiltration

Cited by 8 publications

References 26 publications

Combination of activated carbon/ultrafiltration as pre-treatment for seawater reverse osmosis plants

Combination of activated carbon/ultrafiltration as pre-treatment for seawater reverse osmosis plants

Experimental study on heat power of wet and pipe sections of wet/dry cooling tower with extended surface pipe exchanger

Droplet Separation Efficiency of Vortex Chamber for Circulating Water Cooling

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