Feasibility study of ultrasound as water disinfection technology

Autor:	Tina Željko, Julija Volmajer Valh, Simona Vajnhandl, Alenka Majcen Le Marechal
Rok vydání:	2014
Předmět:	business.industry Ultrasound Environmental engineering Ocean Engineering Ultrasound exposure Laboratory scale Biology Pollution Work related Treatment time Water disinfection business Bacterial cellular morphologies Water Science and Technology Biomedical engineering
Zdroj:	Desalination and Water Treatment. :1-7
ISSN:	1944-3986 1944-3994
DOI:	10.1080/19443994.2014.927331
Popis:	This article presents a section of project work related to the use of ultrasound technology as an eco-friendly water disinfection process. Scientific and economical evaluations are presented for two different ultrasound systems. The effects of ultrasound frequencies (20, 279 and 817 kHz), amplitude (acoustic power) and the treatment time for bacteria survival were studied. Experiments performed on a laboratory scale using two biological indicator micro-organisms Bacillus subtilis and Escherichia coli indicated that disinfection efficiency is affected by bacteria morphology, ultrasound frequencies and energy densities entering the system. As the spore-forming bacteria B. subtilis seemed less vulnerable to ultrasound exposure, a significant E. coli inhibition of 2.97 ± 0.58 log was achieved in 5 min treatment time at 817 kHz.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d46adc61a7a384434ed5534f8929b92e https://doi.org/10.1080/19443994.2014.927331 Zobrazit plný text záznamu