Water disinfection using the novel approach of ozone and a liquid whistle reactor

Rashmi Chand, David H. Bremner, Kyu C. Namkung, Phillip J. Collier, Parag R. Gogate

Research output: Contribution to journalArticle

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Abstract

A novel approach of ozone treatment assisted by a liquid whistle reactor (LWR), which generates hydrodynamic cavitation, has been explored for water disinfection using a simulated effluent containing Escherichia coli (E. coli), one of the dominant markers in faecal coliforms. A suspension having an E. coli concentration of approximately 108 to 109 CFU mL−1 was introduced into the LWR to examine the effect of hydrodynamic cavitation alone and in combination with ozone. Operating conditions of inlet pressure and ozone doses as well as time of ozonation for individual operation along with the combined operation have been varied with the aim of maximizing the extent of disinfection and arriving at an optimum strategy for treatment. It has been observed that nearly 75% disinfection can be achieved in about 3 h of treatment time using an optimized combination of hydrodynamic cavitation and ozonation. This combination has been found to be a cost-effective technique for achieving maximum disinfection compared to the individual operation of hydrodynamic cavitation (lower extent of disinfection) and ozonation (higher costs of treatment usually due to higher cost of ozone generation)
Original languageEnglish
Pages (from-to)357-364
Number of pages8
JournalBiochemical Engineering Journal
Volume35
Issue number3
DOIs
StatePublished - Aug 2007

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Disinfection
Ozone
Water
Flagella
Hydrodynamics
Cavitation
Alphavirus
Ozonization
Liquids
Costs
Osteopetrosis
Birth Certificates
Escherichia coli
Costs and Cost Analysis
Frangula
Health Care Costs
Effluents
Galactosylceramidase
Biogenic Amines

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Chand, R., Bremner, D. H., Namkung, K. C., Collier, P. J., & Gogate, P. R. (2007). Water disinfection using the novel approach of ozone and a liquid whistle reactor. Biochemical Engineering Journal, 35(3), 357-364. DOI: 10.1016/j.bej.2007.01.032

Chand, Rashmi; Bremner, David H.; Namkung, Kyu C.; Collier, Phillip J.; Gogate, Parag R. / Water disinfection using the novel approach of ozone and a liquid whistle reactor.

In: Biochemical Engineering Journal, Vol. 35, No. 3, 08.2007, p. 357-364.

Research output: Contribution to journalArticle

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abstract = "A novel approach of ozone treatment assisted by a liquid whistle reactor (LWR), which generates hydrodynamic cavitation, has been explored for water disinfection using a simulated effluent containing Escherichia coli (E. coli), one of the dominant markers in faecal coliforms. A suspension having an E. coli concentration of approximately 108 to 109 CFU mL−1 was introduced into the LWR to examine the effect of hydrodynamic cavitation alone and in combination with ozone. Operating conditions of inlet pressure and ozone doses as well as time of ozonation for individual operation along with the combined operation have been varied with the aim of maximizing the extent of disinfection and arriving at an optimum strategy for treatment. It has been observed that nearly 75% disinfection can be achieved in about 3 h of treatment time using an optimized combination of hydrodynamic cavitation and ozonation. This combination has been found to be a cost-effective technique for achieving maximum disinfection compared to the individual operation of hydrodynamic cavitation (lower extent of disinfection) and ozonation (higher costs of treatment usually due to higher cost of ozone generation)",
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Chand, R, Bremner, DH, Namkung, KC, Collier, PJ & Gogate, PR 2007, 'Water disinfection using the novel approach of ozone and a liquid whistle reactor' Biochemical Engineering Journal, vol 35, no. 3, pp. 357-364. DOI: 10.1016/j.bej.2007.01.032

Water disinfection using the novel approach of ozone and a liquid whistle reactor. / Chand, Rashmi; Bremner, David H.; Namkung, Kyu C.; Collier, Phillip J.; Gogate, Parag R.

In: Biochemical Engineering Journal, Vol. 35, No. 3, 08.2007, p. 357-364.

Research output: Contribution to journalArticle

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T1 - Water disinfection using the novel approach of ozone and a liquid whistle reactor

AU - Chand,Rashmi

AU - Bremner,David H.

AU - Namkung,Kyu C.

AU - Collier,Phillip J.

AU - Gogate,Parag R.

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AB - A novel approach of ozone treatment assisted by a liquid whistle reactor (LWR), which generates hydrodynamic cavitation, has been explored for water disinfection using a simulated effluent containing Escherichia coli (E. coli), one of the dominant markers in faecal coliforms. A suspension having an E. coli concentration of approximately 108 to 109 CFU mL−1 was introduced into the LWR to examine the effect of hydrodynamic cavitation alone and in combination with ozone. Operating conditions of inlet pressure and ozone doses as well as time of ozonation for individual operation along with the combined operation have been varied with the aim of maximizing the extent of disinfection and arriving at an optimum strategy for treatment. It has been observed that nearly 75% disinfection can be achieved in about 3 h of treatment time using an optimized combination of hydrodynamic cavitation and ozonation. This combination has been found to be a cost-effective technique for achieving maximum disinfection compared to the individual operation of hydrodynamic cavitation (lower extent of disinfection) and ozonation (higher costs of treatment usually due to higher cost of ozone generation)

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Chand R, Bremner DH, Namkung KC, Collier PJ, Gogate PR. Water disinfection using the novel approach of ozone and a liquid whistle reactor. Biochemical Engineering Journal. 2007 Aug;35(3):357-364. Available from, DOI: 10.1016/j.bej.2007.01.032