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Journal of Zhejiang University SCIENCE B 2007 Vol.8 No.7 P.493-497


Investigation and evaluation of ultrasound reactor for reduction of fungi from sewage

Author(s):  DEHGHANI Mohammad Hadi, MAHVI Amir Hossein, JAHED Gholam Reza, SHEIKHI Razieh

Affiliation(s):  Department of Environmental Health Engineering, School of Public Health, Medical Sciences/University of Tehran, P.O. Box 14155-6145, Tehran, I.R. Iran

Corresponding email(s):   mohadehghani@yahoo.com

Key Words:  Ultrasound reactor, Sewage, Fungi, Cavitation, Frequency

DEHGHANI Mohammad Hadi, MAHVI Amir Hossein, JAHED Gholam Reza, SHEIKHI Razieh. Investigation and evaluation of ultrasound reactor for reduction of fungi from sewage[J]. Journal of Zhejiang University Science B, 2007, 8(7): 493-497.

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T1 - Investigation and evaluation of ultrasound reactor for reduction of fungi from sewage
A1 - DEHGHANI Mohammad Hadi
A1 - MAHVI Amir Hossein
A1 - JAHED Gholam Reza
A1 - SHEIKHI Razieh
J0 - Journal of Zhejiang University Science B
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DOI - 10.1631/jzus.2007.B0493

The objective of the investigation was to study the application of ultrasound reactor technology (USRT) as a disinfectant for reduction of fungi from sewage effluent. fungi are carbon heterotrophs that require preformed organic compounds as carbon sources. USRT is an attractive means to improve water quality because of the system simplicity and no production of toxic by-products. An ultrasound reactor produces strong cavitation in aqueous solution causing shock waves and reactive free radicals by the violent collapse of the cavitation bubble. These effects should contribute to the physical disruption of microbial structures and inactivation of organisms. There was significant reduction in fungal growth, with decreased fungal growth with increasing USRT. In this study, ultrasound irradiation at a frequency of 42 kHz was used to expose suspensions of fungi to evaluate the disinfection efficacy of the ultrasound reactor. Also, this study showed that in this system more than 99% reduction of sewage fungi was achieved after 60 min.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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