ENVIRONMENTAL PROJECT COLLABORATIONS WITH

SOUTH KOREAN PARTNERS

The aim of the projects where the exchange of ideas, problems, and results using governmental tools and funds from both countries. These projects established the basis for co-operation between groups of researchers in both countries, Romania and Korea. The synergistic effect was possible through sharing experience and knowledge. The environmental actions are chosen and studied to develop the novel concepts and technology in the field. In addition, cooperation and exchange of experience between two research groups on common topics in the environmental engineering field serve as the entrance gate for the wider and deeper partnership in the environmental engineering and other field of application in general.

The coordinators of both countries were carrying on common scientific interest and they know the real technical problems associated their research activities.

The results of bilateral activities have been published as scientific papers with co-authorship, oral/poster presentations in technical meetings and technical reports.

Using reciprocal relationships, partners are developing new research projects and useful collaborations.

KOREAN-ROMANIAN JOINTS COMMITTEE

ON SCIENTIFIC & TECHNOLOGICAL

COOPERATION

First: Seoul 3 December 2007 Second: Bucharest, September 15, 2009

2008-2009: 8 projects

2010-2011: 5 projects

National Authority for Scientific Research

International Cooperation Bureau, Ministry of Education

Fist project (2008-2009), named “The advanced Treatment of Water and Wastewater with Ultrasound”, acronym TWWU, was coordinated by PhD. Eng. David Elena, ICSI Rm. Valcea, Romania and Professor Khim Jeehyeong, Dept. of Civil, Environmental, and Architectural Eng., Korea University, Seoul, Korea.

First ICSI project (2008-2009), named “The advanced Treatment of Water and Wastewater with Ultrasound”, acronym TWWU, was coordinated by Professor Khim Jeehyeong, Dept. of Civil, Environmental, and Architectural Eng., Korea University, Seoul, Korea.

Ultrasound in Environmental Technology: The advanced treatment of water and wastewater is one of the key issues in both countries of Romania and Korea. The conventional oxidation processes based on the biological and chemical oxidation power are not good enough to treat the nonbiodegradabe minor trace organics or strong wastes.

One of the emerging ideas in the advanced treatment is the use of ultrasound, which has wave length of more than 20KHz. The irradiation of ultrasound itself creates the cavitation phenomena. The breakdown of organic pollutant occurs in the cavitation bubble as well as in the interfacial area. Also, the ultrasound can be combined with the other chemical oxidation process and have synergistic effects.

30,000,000 Hz

1,000,000 Hz

20,000 Hz

20 Hz

Ultrasound

Diagnostic medical US

Audible sound

Applied to environmental treatments

1. Irradiation of sound energy to aqueous phase

Ultrasound is applied to homogeneous or heterogeneous aqueous phase

2. Formation of sound field

3. Induction of cavitation

5,000 K1,000 atm

4. Chemical & Physical effects of cavitation → Transformation / Transfer phenomena

Cavitation bubble

Pyrolytic center

Temp. : ~ 3000 – 5000 KPressure : ~ 1000 atm

Interfacial region

Temp. : ~ 300 – 2000 K

Bulk solution

Temp. : ~ 300 K

■ Chemical effects : Transformation (Degradation)

Cavitationbubble

Volatilepollutants

Non-volatilepollutants

H2O / O2

Radicaloxidation

5,000 K1,000 atm

Volatiles : PyrolysisNon-volatiles : Radical oxidation

H2O

O2

H· + H2O

O· + H2O

H· + O2

2HO·

2HOO·

→

→

→

→

→

→

→

H· + ·OH

2O·

HO· + H2

2·OH

HOO·

H2O2

H2O2 + O2

PyrolysisRadical oxidation

RESULTS

Useful links: *The chemistry of ultrasound * Sonoelectrochemistry * Japan Society of Socochemistry * European Society of Chemistry * Ultrasonic Industry Association * Cavitation And Bubble Dynamics * ASHLAND * Ultrasonics Sonochemistry * HIELSCER - Ultrasound Technology * Sonochemistry * RSC - Advancing the Chemical Sciences * AAAS - Science

Scientifically contributions: 15 articles, abstracts or presentations

Web page: http://www.icsi.ro/proiecte/internationale/twwu/engleza/index.html

Actual project (2010-2011), named “The investigation, remediation and monitoring of soil and groundwater contamination; exchange of ideas and development of cooperative research projects”, acronym INREMAS, is coordinated by PhD. Eng. Iordache Ioan, National Research&Development Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, Romania and Professor Cho Jong Soo, Catholic University, Industry-Academic Cooperation Foundation, Seoul, Korea. Key issues:

•Investigation•Remediation•Monitoring

The Korean team will prepare a program (seminars, reports, visits, etc.) about remediation of soil and groundwater and the Romanian part a program (seminars, reports, visit, etc.) about monitoring and investigation. Objectives and foreseen advantages:

The specific objectives of this project are as follows:•To have meeting twice a year and have workshops to discuss about the investigation, remediation and monitoring of soil and groundwater contaminated sites,•To publish technical papers in international conferences and journals.

And the contributions from this project will be as follows:•to bridge research ideas and experience between environmental researchers and engineers in two countries,•to extend the knowledge in the investigation, remediation techniques and monitoring of soil and groundwater contaminated sites,•to train and educate graduate students in this field of research, science and technology

Actual project (2010-2011), named “The investigation, remediation and monitoring of soil and groundwater contamination; exchange of ideas and development of cooperative research projects”,

Ex. Reactive barriers

RESULTS-1-Scientifically and technical visits in Romania 2010:

Isotope Ratio Mass Spectrometry Lab Gas Analysis Lab

Microbiology Lab Micro-production

Materials LabChemical & Physical

Analysis Lab Gas chromatography Lab

Radioactivity Analysis Lab

RESULTS-2-Web pages:

http://www.icsi.ro/proiecte/internationale/inremas/engleza/index.html

Scientifically contributions:

15 articles, abstracts or presentations.

Expectations

1.New fruitfully collaborations;

2.Increase the diversity of partners: research institutes,

professional associations, foundations and industrial (private)

companies;

3.Till at this moment was prepared new proposals that imply

both research centers and industry.

For more details about collaborations, results or intentions, please visit:

http://www.icsi.ro/proiecte/internationale.html

Thank you for attention!