生物炭基材料对水溶液中环丙沙星的去除效能及机制解析
发布时间：2021-06-10 10:09
不同药物的大量生产和使用,特别是环丙沙星,因其致命性,对环境构成了严重威胁。由于这些药物代谢不全,使其存在于水生环境中。因此,它引起了科学界的关注。用于处理水的各种材料,如石墨烯、生物炭、碳纳米管、粘土矿物和蒙莫里龙石等。生物炭从废物生物量中获得,在改变环境补救方面起着至关重要的作用,如提高土壤肥力、减缓气候变化和水处理等为了利用生物炭的多功能性,本文研究了在450℃温度下通过热解产生的不同生物炭基材料的应用,通过应用吸附、声催化降解和膜过滤等不同技术从水中去除丙烯酸.吸附技术中,使用两种基于生物炭的吸附剂来去除丙叶沙辛,通过在不同的条件下（如不同pH,不同温度,不同的时间间隔和不同的电解质）进行不同的吸附实验来测量其吸附能力。因此,评估了不同的动力学和吸附等温线模型及机理。为了对环丙沙星进行声催化降解,将超声辐射应用于基于生物炭的新型声催化剂,该超声也用于吸附目的。为了确认成功降解,与中间产品一起检测出活性氧种（ROS）,该物质负责降解有机物。膜过滤与其他净水技术相比具有多种优点。主要原因是多功能生物炭也建在聚合物网络的膜中。制备的膜经过不同的表征分析,经鉴定效果良好,以最少的结垢去...
【文章来源】：山东大学山东省 211工程院校 985工程院校 教育部直属院校
【文章页数】：153 页
【学位级别】：博士
【文章目录】：
ABSTRACT
摘要
CHAPTER 1. INTRODUCTION AND STATEMENT OF PURPOSE
1.1 Research background
1.2 Emergence of pharmaceuticals in water
1.2.1 Emergence of ciprofloxacin in water
1.2.2 Toxic effects of ciprofloxacin
1.3 Removal of ciprofloxacin
1.3.1 Adsorption
1.3.2 Advanced oxidation process
1.3.3 Membrane filtration
1.4 Biochar and its characteristics
1.5 Chitosan
1.6 Humic acid
1.7 Research Objectives
1.8 Thesis Organization
CHAPTER 2. ENHANCEMENT OF CIPROFLOXACIN SORPTION ON CHITOSAN/BIOCHAR HYDROGEL BEADS
2.1 Introduction
2.2 Materials and methods
2.2.1 Materials
2.2.2 Biochar preparation
2.2.3 Chitosan biochar hydrogel beads preparation
2.2.4 Characterization methods
2.2.5 Water content in CBHB
2.2.6 Adsorption experiments
2.2.7 Desorption and regeneration studies
2.3 Results and discussions
2.3.1 Characterization results
2.3.2 pH effect
2.3.3 Solvent Effect
2.3.4 Adsorption kinetics
2.3.5 Adsorption isotherms
2.3.6 Mechanism of adsorption
2.3.7 Electrolytic effects
2.3.8 Desorption
2.4 Summary
CHAPTER 3. ENHANCED REMOVAL OF CIPROFLOXACIN USING HUMIC ACIDMODIFIED HYDROGEL BEADS
3.1 Introduction
3.2 Materials and methods
3.2.1 Materials
3.2.2 Preparation of biochar, HA-BC and hydrogel beads
3.2.3 Characterization methods
3.2.4 Adsorption experiments
3.2.5 Desorption and regeneration studies
3.3 Results and discussions
3.3.1 Characterization results
3.3.2 Role of humic acid on adsorption
3.3.3 pH effect
3.3.4 Electrolytic effects
3.3.5 Adsorption kinetics
3.3.6 Adsorption isotherms
3.3.7 Mechanism of adsorption
3.3.8 Desorption
3.4 Summary
CHAPTER 4. SONOCATALYTIC DEGRADATION OF CIPROFLOXACIN USING HYDROGEL BEADS OF Ti02 INCORPORATED BIOCHAR AND CHITOSAN
4.1 Introduction
4.2 Materials and methods
4.2.1 Materials
4.2.2 Biochar preparation and its incorporation with Ti〇2
4.2.3 Preparation of hydrogel beads from Ti-BC
4.2.4 Characterization methods
4.2.5 Adsorption and degradation experiments
4.3 Results and discussion
4.3.1 Characterization of biochar,Ti-BC and TBCB
4.3.2 Adsorption kinetics
4.3.3 Adsorption isotherms
4.3.4 Influence of different operational parameters on sonocatalytic process
4.3.5 Intermediates during degradation
4.3.6 Regeneration of catalyst
4.4 Summary
CHAPTER 5. REMOVAL OF CIPROFLOXACIN USING BIOCHAR COMPOSITE MEMBRANES
5.1 Introduction
5.2 Materials and methods
5.2.1 Materials
5.2.2 Preparation of biochar/PES membranes
5.2.3 Characterization of membranes
5.2.4 Filtration experiments
5.3 Results and discussion
5.3.1 Morphology and structure of membranes
5.3.2. Properties of membranes
5.3.3 Performance of membranes
5.3.4 Regeneration of membrane
5.4 Summary
CHAPTER 6. CONCLUSIONS, INNOVATIONS AND PROSPECTS
6.1 Conclusions
6.2 Innovations
6.3 Prospects
References
Acknowledgement
Publications
附件
学位论文评阅及答辩情况表
【参考文献】：
期刊论文
[1]Modification of a magnetic carbon composite for ciprofloxacin adsorption[J]. Haixin Mao,Shikui Wang,Jian-Ying Lin,Zengshuang Wang,Jun Ren. Journal of Environmental Sciences. 2016(11)
[2]环丙沙星对3种作物的毒性[J]. 李通,金彩霞,朱雯斐,刘国光,刘海津,郑立庆. 生态毒理学报. 2013(03)
本文编号：3222179
【文章来源】：山东大学山东省 211工程院校 985工程院校 教育部直属院校
【文章页数】：153 页
【学位级别】：博士
【文章目录】：
ABSTRACT
摘要
CHAPTER 1. INTRODUCTION AND STATEMENT OF PURPOSE
1.1 Research background
1.2 Emergence of pharmaceuticals in water
1.2.1 Emergence of ciprofloxacin in water
1.2.2 Toxic effects of ciprofloxacin
1.3 Removal of ciprofloxacin
1.3.1 Adsorption
1.3.2 Advanced oxidation process
1.3.3 Membrane filtration
1.4 Biochar and its characteristics
1.5 Chitosan
1.6 Humic acid
1.7 Research Objectives
1.8 Thesis Organization
CHAPTER 2. ENHANCEMENT OF CIPROFLOXACIN SORPTION ON CHITOSAN/BIOCHAR HYDROGEL BEADS
2.1 Introduction
2.2 Materials and methods
2.2.1 Materials
2.2.2 Biochar preparation
2.2.3 Chitosan biochar hydrogel beads preparation
2.2.4 Characterization methods
2.2.5 Water content in CBHB
2.2.6 Adsorption experiments
2.2.7 Desorption and regeneration studies
2.3 Results and discussions
2.3.1 Characterization results
2.3.2 pH effect
2.3.3 Solvent Effect
2.3.4 Adsorption kinetics
2.3.5 Adsorption isotherms
2.3.6 Mechanism of adsorption
2.3.7 Electrolytic effects
2.3.8 Desorption
2.4 Summary
CHAPTER 3. ENHANCED REMOVAL OF CIPROFLOXACIN USING HUMIC ACIDMODIFIED HYDROGEL BEADS
3.1 Introduction
3.2 Materials and methods
3.2.1 Materials
3.2.2 Preparation of biochar, HA-BC and hydrogel beads
3.2.3 Characterization methods
3.2.4 Adsorption experiments
3.2.5 Desorption and regeneration studies
3.3 Results and discussions
3.3.1 Characterization results
3.3.2 Role of humic acid on adsorption
3.3.3 pH effect
3.3.4 Electrolytic effects
3.3.5 Adsorption kinetics
3.3.6 Adsorption isotherms
3.3.7 Mechanism of adsorption
3.3.8 Desorption
3.4 Summary
CHAPTER 4. SONOCATALYTIC DEGRADATION OF CIPROFLOXACIN USING HYDROGEL BEADS OF Ti02 INCORPORATED BIOCHAR AND CHITOSAN
4.1 Introduction
4.2 Materials and methods
4.2.1 Materials
4.2.2 Biochar preparation and its incorporation with Ti〇2
4.2.3 Preparation of hydrogel beads from Ti-BC
4.2.4 Characterization methods
4.2.5 Adsorption and degradation experiments
4.3 Results and discussion
4.3.1 Characterization of biochar,Ti-BC and TBCB
4.3.2 Adsorption kinetics
4.3.3 Adsorption isotherms
4.3.4 Influence of different operational parameters on sonocatalytic process
4.3.5 Intermediates during degradation
4.3.6 Regeneration of catalyst
4.4 Summary
CHAPTER 5. REMOVAL OF CIPROFLOXACIN USING BIOCHAR COMPOSITE MEMBRANES
5.1 Introduction
5.2 Materials and methods
5.2.1 Materials
5.2.2 Preparation of biochar/PES membranes
5.2.3 Characterization of membranes
5.2.4 Filtration experiments
5.3 Results and discussion
5.3.1 Morphology and structure of membranes
5.3.2. Properties of membranes
5.3.3 Performance of membranes
5.3.4 Regeneration of membrane
5.4 Summary
CHAPTER 6. CONCLUSIONS, INNOVATIONS AND PROSPECTS
6.1 Conclusions
6.2 Innovations
6.3 Prospects
References
Acknowledgement
Publications
附件
学位论文评阅及答辩情况表
【参考文献】：
期刊论文
[1]Modification of a magnetic carbon composite for ciprofloxacin adsorption[J]. Haixin Mao,Shikui Wang,Jian-Ying Lin,Zengshuang Wang,Jun Ren. Journal of Environmental Sciences. 2016(11)
[2]环丙沙星对3种作物的毒性[J]. 李通,金彩霞,朱雯斐,刘国光,刘海津,郑立庆. 生态毒理学报. 2013(03)
本文编号：3222179
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