Summary of doctoral thesis in Environmental engineering: Inhibitory effect of Eupatorium fortunei Turcz. extracts on the growth of a toxic cyanobacterial species Microcystis aeruginosa Kutzing in fresh waterbodies

Develop the process of producing crude extracts, fractions and pure chemical compounds isolated from E. fortunei; tudy of inhibitory effect of the crude ethanol extracts from E. fortunei on the growth of and evaluating their ecological safety to non-target aquatic organisms. | MINISTRY OF EDUCATION AND VIETNAM ACADEMY OF SCIENCE TRAINING AND TECHNOLOGY GRADUATE UNIVERSITY OF SCIENCE AND TECHNOLOGY PHAM THANH NGA INHIBITORY EFFECT OF EUPATORIUM FORTUNEI TURCZ. EXTRACTS ON THE GROWTH OF A TOXIC CYANOBACTERIAL SPECIES Microcystis aeruginosa IN FRESH WATERBODIES Major Environmental Engineering Code SUMMARY OF DOCTORAL THESIS IN ENVIRONMENTAL ENGINEERING Hanoi - 2019 The doctoral thesis was completed at Institute of Environmental Technology IET Graduate University of Science and Technology Vietnam Academy of Science and Technology Supervisors Prof. Dr. Dang Dinh Kim Dr. Le Thi Phuong Quynh Reviewer 1. Reviewer 2. Reviewer 3. This doctoral thesis will be defended at Graduate University of Science and Technology Vietnam Academy of Science and Technology at on 2019 This doctoral thesis can be found at Library of the Graduate University of Science and Technology VAST. 1 INTRODUCTION 1. NECESSITY OF DOCTORAL THESIS Eutrophication is a widespread problem in aquatic ecosystems around the world due to sewage and surface run-off. It significantly affects water quality and induces off-flavor problem. Moreover cyanobacterial blooms usually break out along with release of cyanotoxins which cause a series of adverse effects such as decreasing water quality and biodiversity and illness in animals and humans. Among all sorts of microalgae Microcystis aeruginosa one of the most common representative species responsible for the water blooming can produce hepatotoxins and neurotoxins which may lead to headache fever abdominal pain nausea vomiting and even cancer. Therefore it is of great importance to inhibit the growth of cyanobacteria especially M. aeruginosa in eutrophic waters. Basically there are three short-term approaches to control harmful algal blooms such as chemical physical and biological approaches. Chemical treatments can effectively and rapidly remove algal bloom. However some algicidal chemicals can cause secondary pollution of .

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