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마이크로웨이브로 처리한 폐주물철을 이용한 크롬 제거 증진에 관한연구

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Author(s)
박진영
Issued Date
2016
Keyword
크롬제거
Abstract
Abstract


A study on enhancement of chromium removal using waste cast iron treated by microwave

By: Park, Jin Young
Advisor: Prof. Cheong Kyung-Hoon Ph. D
Department of Environmental Engineering
Graduate School of Chosun University

A laboratory experiment was performed to the Cr6+ removal from wastewater using waste cast iron (WCI) and waste cast iron treated by microwaves (M/W WCI)
The removal efficiency of Cr6+ was influenced by pH range (pH 2~12) and the efficiency was higher in lower pH conditions. The optimum Cr6+ removal was observed in the pH 2. The removal efficiency of Cr6+ was increased with increasing of dosage of WCI and M/W WCI. Adsorption equilibrium data of Cr6+ on WCI and M/W WCI reasonably fitted Langmuir isotherm model. The adsorption reaction can be described by the secondary-order reversible reaction. The adsorption energy obtain from D-R model for WCI and M/W WCI was 28.86 and 21.32 kJ/mole respectively at 25℃ indicating a chemisorption processes as primary adsorption mechanism.
Alternative Title
A study on the enhancement of chromium removal using waste cast iron treated by microwaves
Alternative Author(s)
Pakr jin young
Department
일반대학원 환경공학과
Advisor
정경훈
Awarded Date
2016-08
Table Of Contents
CONTENTS

List of Tables ⅲ
List of Figures ⅳ
ABSTRACT ⅵ

1. 서 론 1

2. 이론적 고찰 2

가. 중금속 2
1) 중금속의 정의 2
2) 중금속에 의한 영향 3
3) 중금속 허용기준 5
나. 크롬 9
1) 크롬의 정의 9
2) 크롬에 의한 영항 11
다. 크롬의 처리기술 13
1) 환원 침전법 13
2) 이온교환(ion exchange) 14
3) Ferrite Process 15
4) 흡착제거 16
라. 흡착 17
1) 흡착의 개념 17
2) 흡착의 특성 18
마. 흡착등온선 20

3. 실험방법 및 분석방법 22

가. 폐주물철의 Microwave 처리 22
1) 처리법 22
2) 폐주물철의 표면 변화 22
3) XRD 분석 23
나. 용액의 제조 23
다. 회분식 실험 23
1) pH 변화에 따른 Fe용출 실험 23
2) pH 변화에 따른 크롬 제거 23
3) 투입량에 따른 크롬 제거 24
4) 초기농도에 따른 크롬 제거 24
라. 분석 방법 25

4. 결과 및 고찰 26

가. 폐주물철의 Microwave 처리 26
1) 폐주물철의 SEM-EDS 측정 26
2) XRD 분석 29
나. 회분식 실험 31
1) pH 변화에 따른 Fe용출 31
2) pH 변화에 따른 크롬 제거 32
3) 투입량에 따른 크롬 제거 34
4) 초기 농도에 따른 크롬 제거 35
다. 흡착등온선 36
라. Langmuir와 Freundlich model 37
마. 흡착속도 상수 42

5. 결론 46

REFERENCES 47
Degree
Master
Publisher
조선대학교
Citation
박진영. (2016). 마이크로웨이브로 처리한 폐주물철을 이용한 크롬 제거 증진에 관한연구.
Type
Dissertation
URI
https://oak.chosun.ac.kr/handle/2020.oak/12902
http://chosun.dcollection.net/common/orgView/200000265677
Appears in Collections:
General Graduate School > 3. Theses(Master)
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