Abstract：
:In the current study, a new hybrid ultrasonic-electrocoagulation reactor (U-E reactor) has been used to inactivate Escherichia coli in water. The new hybrid reactor consists of an ultrasonic bath fitted with four perforated aluminium electrodes. These perforated electrodes are designed to act as baffle-plates to enhance the water-mixing process. The electrodes eliminate the need for external mixing devices, which in turn, enhances the cost-effectiveness of the unit. Initially, the ability of the electrocoagulation to inactivate E. coli was optimised for different operating parameters such as electrolysing time (Te), electrodes spacing (ES) and current density (CD). The ultrasonic field was then applied over different time periods (Tu), during the course of the electrolysing process. Statistical analyses have been conducted to assess the relative effect of each operating parameter on the inactivation of E. coli. An economic study has also been conducted to assess the operating costs of the U-E reactor. The results revealed that the new U-E reactor inactivated 100% of the E. coli within 11 min of electrolysis at ES of 5 mm, CD of 1.5 mA/cm2, and an operation cost of 0.212 US $/m3. It was been established that the relative effect of operating parameters on E.coli inactivation followed the order: Te>Tu>CD>ES.
journal_name
Chemospherejournal_title
Chemosphereauthors
Hashim KS,Ali SSM,AlRifaie JK,Kot P,Shaw A,Al Khaddar R,Idowu I,Gkantou Mdoi
10.1016/j.chemosphere.2020.125868subject
Has Abstractpub_date
2020-05-01 00:00:00pages
125868eissn
0045-6535issn
1879-1298pii
S0045-6535(20)30059-Xjournal_volume
247pub_type
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