Effect of organic on chemical oxidation for biofouling control in pilot-scale seawater cooling towers

Al‐Bloushi, Mohammed; Saththasivam, Jayaprakash; Jeong, Sanghyun; Amy, Gary L.; Leiknes, Tor Ove

doi:10.1016/j.jwpe.2017.09.002

Cited by 12 publications

(5 citation statements)

References 20 publications

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“…The free radicals that show both oxidizing and disinfecting abilities are responsible for attacking essential cellular components, such as proteins, leading to cell death. The H 2 O 2 efficiency to control microorganisms’ growth relates to the concentration used, exposure time, temperature, and amount of cell. ,− Another environmentally friendly alternative is the use of ozone (O 3 ), a safe and strong oxidizer that possesses microbicidal action against an array of microorganisms with an efficiency of about 100 to 300 times higher than that of chlorine . However, the O 3 has a short half-life, reducing the biocide contact areas in the equipment, and needs many injection points. ,,, …”

Section: Strategies To Reduce Biofouling In Cooling Water Systemsmentioning

confidence: 99%

“…Another environmentally friendly alternative is the use of ozone (O 3 ), a safe and strong oxidizer that possesses microbicidal action against an array of microorganisms with an efficiency of about 100 to 300 times higher than that of chlorine. 85 However, the O 3 has a short half-life, reducing the biocide contact areas in the equipment, and needs many injection points. 13,80,85,86 The use of environmentally friendly biocides on the industrial-scale has many positive effects but also has some disadvantages.…”

Section: Strategies To Reduce Biofouling In Cooling Water Systemsmentioning

confidence: 99%

“…85 However, the O 3 has a short half-life, reducing the biocide contact areas in the equipment, and needs many injection points. 13,80,85,86 The use of environmentally friendly biocides on the industrial-scale has many positive effects but also has some disadvantages. First, the cost−benefit ratio is lower than the chlorine-based biocides since the production of the environmentally friendly biocides is costly, and commonly more concentration of the product is needed to ensure adequate effectiveness.…”

Section: Strategies To Reduce Biofouling In Cooling Water Systemsmentioning

confidence: 99%

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Industrial Cooling Systems and Antibiofouling Strategies: A Comprehensive Review

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et al. 2021

Ind. Eng. Chem. Res.

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The biofouling on cooling systems surfaces is one of the major problems in industrial processes because it causes operational drawbacks that interfere in the process performance. The application of biofouling control methods is essential in cooling system operation to minimize biofilm formation on the equipment surfaces, thus maintaining energy demand, increasing operational performance, and providing cost savings. In this context, this work presents a literature review on strategies to control biofilm on surfaces using chemical and physical methods, improving the understanding of the biofouling formation mechanism, and the adverse effects on industrial cooling system equipment. This review examines the chemical and physical methods efficiently employed as antibiofouling strategies for cooling systems, theoretical framework, recent research findings, antimicrobial mechanisms involved, advantages, limitations, feasibility, and operational range. A comparison between chemical and physical methods is highlighted, as are gaps in the literature concerning antibiofouling strategies for the surfaces of cooling systems.

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Section: Strategies To Reduce Biofouling In Cooling Water Systemsmentioning

confidence: 99%

Section: Strategies To Reduce Biofouling In Cooling Water Systemsmentioning

confidence: 99%

Section: Strategies To Reduce Biofouling In Cooling Water Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Industrial Cooling Systems and Antibiofouling Strategies: A Comprehensive Review

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Veiga

et al. 2021

Ind. Eng. Chem. Res.

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“…It consists of three identical parallel counter flow induced draft CT systems. The systems are shown in Figure 1, and the detailed information was described in a previous study (Al-Bloushi et al 2017). In short, each CT unit has a total volume of 62 l, and a cooling capacity of 15 kW.…”

Section: System Operationmentioning

confidence: 99%

Effect of phosphate availability on biofilm formation in cooling towers

et al. 2020

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Phosphate limitation has been suggested as a preventive method against biofilms. P-limited feed water was studied as a preventive strategy against biofouling in cooling towers (CTs). Three pilot-scale open recirculating CTs were operated in parallel for five weeks. RO permeate was fed to the CTs (1) without supplementation (reference), (2) with supplementation by biodegradable carbon (P-limited) and (3) with supplementation of all nutrients (non-P-limited). The P-limited water contained 10 mg PO 4 l À1. Investigating the CT-basins and coupons showed that P-limited water (1) did not prevent biofilm formation and (2) resulted in a higher volume of organic matter per unit of active biomass compared with the other CTs. Exposure to external conditions and cycle of concentration were likely factors that allowed a P concentration sufficient to cause extensive biofouling despite being the limiting compound. In conclusion, phosphate limitation in cooling water is not a suitable strategy for CT biofouling control.

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“…The cooling tower pilot facility is located at the King Abdullah University of Science and Technology (KAUST) in Saudi Arabia. The process and operating parameters have been previously described [8,9]. Two parallel cooling towers were considered in this study.…”

Section: Pilot Set-upmentioning

confidence: 99%

Sialic Acids: An Important Family of Carbohydrates Overlooked in Environmental Biofilms

et al. 2020

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Sialic acids in the structural matrix of biofilms developing in engineered water systems constitute a potential target in the battle against biofouling. This report focuses specifically on the presence of sialic acids as part of the extracellular polymeric substances (EPS) of biofilms forming in cooling towers and the potential effect of nutrient starvation on sialic acid presence and abundance. Two cooling water compositions were compared in parallel pilot-scale cooling towers, one poor in nutrients and one enriched in nutrients. Fresh deposits from the two cooling towers were collected after a five-week operation period. EPS extractions and analyses by Fourier transform infrared spectroscopy (FTIR) and high-resolution mass spectrometry (MS), along with 16S rRNA gene amplicon sequencing were performed. The results of MS analyses showed the presence of pseudaminic/legionaminic acids (Pse/Leg) and 2-keto-3-deoxy-d-glycero-d-galacto-nononic acid (KDN) in both biofilm EPS samples. FTIR measurements showed the characteristic vibration of sialic acid-like compounds ν(C=O)OH in the nutrient poor sample exclusively. Our findings, combined with other recent studies, suggest that bacterial sialic acids are common compounds in environmental biofilms. Additionally, the conservation of sialic acid production pathways under nutrient starvation highlights their importance as constituents of the EPS. Further in-depth studies are necessary to understand the role of sialic acids in the structural cohesion and protection of environmental biofilm layer.

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Effect of organic on chemical oxidation for biofouling control in pilot-scale seawater cooling towers

Cited by 12 publications

References 20 publications

Industrial Cooling Systems and Antibiofouling Strategies: A Comprehensive Review

Industrial Cooling Systems and Antibiofouling Strategies: A Comprehensive Review

Effect of phosphate availability on biofilm formation in cooling towers

Sialic Acids: An Important Family of Carbohydrates Overlooked in Environmental Biofilms

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