TAILIEUCHUNG - Summary of doctoral thesis in Environmental technology: Study on the production of modified biochar and activated carbon derived from corncob and their application in ammonium removal from domestic water

Objectives of this dissertation: Develop the optimal preparation procedure of modified biochar and activated carbon derived from an agricultural byproduct, such as corncob wastes; Investigate the physical and chemical properties of modified biochar and activated carbon; apply modified biochar and activated carbon in removal of ammonium from synthesised and real water under batch and column experiments. | MINISTRY OF EDUCATION VIETNAM ACADEMY OF AND TRAINING SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY SCIENCE AND TECHNOLOGY . VU THI MAI STUDY ON THE PRODUCTION OF MODIFIED BIOCHAR AND ACTIVATED CARBON DERIVED FROM CORNCOB AND THEIR APPLICATION IN AMMONIUM REMOVAL FROM DOMESTIC WATER Major Environmental Engineering Code 62 52 03 20 SUMARY OF DOCTORAL THESIS IN ENVORONMET TECHNOLOGY Hanoi - 2018 1 The thesis has been completed at Institute for Environemtal Technology Graduate university science and technology Vietnam Academy of Science and Technology Science supervisor Trinh Van Tuyen 2. Doan Dinh Phuong Reviewer 1 Reviewer 2 Reviewer 3 The thesis was defended at National level Council of Thesis Assessment held at Graduate University of Science and Technology Vietnam Academy of Science and Technology at .on Thesis can be futher referred at -The Library of Graduate University of Science and Technology -National Library of Vietnam 2 INTRODUCTION 1. Background In recent years groundwater levels in Vietnam have been declining in quantity and quality due to the impacts of climate change and exploitation for economic. Vietnam has abundant surface and ground water resources the average total runoff is 848 km3 year however approximately 6 million Hanoi inhabitants receive 80 of their drinking water from groundwater. Excessive presence of ammonium could negatively affect the quality of groundwater and surface water. Households might suffer potential health risks from using directly water resources with uncontrolled quality. In some areas in Vietnam groundwater often contains a higher level of iron manganese arsenic ammonium concentrations than the allowable limitation. According to previous reports the presence of ammonium concentration in groundwater in some areas exceeded the surface water quality standards in Vietnam. Such typical areas are in the northern . Vinh Phuc Bac Ninh Hai Duong Hung Yen Hanoi provinces and the south . Ho Chi Minh

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