Progress of Cryogenics and Isotopes Separation

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The National Conference with international participation on New Cryogenic and Isotope Technologies for Energy and Environment - EnergEn 2018 is organized by the National Research-Development Institute for Cryogenic and Isotopic Technologies - ICSI Rm. Valcea with the scientific participation of the University of Pitesti and the University of Craiova and will be held at Baile Govora, in 2018.
REMOVAL OF ORGANIC COMPOUNDS FROM WATER BY SONOCHEMICAL PROCESSES Print

REMOVAL OF ORGANIC COMPOUNDS FROM WATER BY SONOCHEMICAL PROCESSES

Mihaela Iordache1, Ioan Iordache2*, Luisa Roxana Popescu1, Adriana Marinoiu2

1National Research and Development Institute for Industrial Ecology – INCD-ECOIND Bucharest-Subsidiary Ramnicu Valcea, 1 Uzinei Street, Ramnicu Valcea 240050, Romania

2National Research and Development Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, Uzinei Street no. 4, PO Box Râureni 7, 240050, Râmnicu Vâlcea, Romania

 

ABSTRACT

The paper describes the wastewater micro-pollutant removal by sonochemical processes. The work discloses the sonochemical degradation of the next organochlorine compounds: 1, 2 Dichloro-propane, 1, 2 Dichloroethane, and 1,1,2,2 Tetrachloroethane from aqueous solutions. The experiments were realized with two types of equipment: ultrasound bath UCD-150 and sonotrode UP 200 Ht.

The experimental results showed high efficient removal for all three compounds: 1,1,2,2 Tetrachloroethane 88.8 %, 1, 2 Dichloropropane 86.6 % and 1, 2 Dichloroethane 80.0 % in bath ultrasound treatment after 50 minute. The degradation of 1, 2 Dichloropropane, 1, 2 Dichloroethane, 1,1,2,2 Tetrachloroethane was much better for sonotrode with 14 mm diameter (81.0 %, 74.0 % respectively 67.5 %) than for sonotrode with 40 mm diameter (76.0 %, 63.0 % and 62.8 %). This difference between the two probes regarding removal efficiency can be explained by different amplitudes of equipment.

Keywords: chlorinated organic compounds, ultrasonic irradiation, sonochemical processes.

 

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*Corresponding author: Ioan Iordache, e-mail: Iordache.Ioan @icsi.ro, phone: 0250 732744, fax: 0250 732746