水熱碳化技術(shù)是一項(xiàng)新興的熱化學(xué)轉(zhuǎn)化技術(shù),可將生物質(zhì)轉(zhuǎn)化為水熱炭、生物油以及其他化學(xué)品等潛在的終端產(chǎn)品。由于其環(huán)境友好性,如降低溫室氣體的排放,對于許多環(huán)境專家來說,是一個(gè)熱點(diǎn)的研究領(lǐng)域。另一方面,人類面臨著地表重金屬污染和工業(yè)廢水的排放導(dǎo)致了嚴(yán)重的健康問題,以及世界范圍內(nèi)的土壤退化問題。在本研究中,對基于水熱碳化技術(shù)制備的碳質(zhì)材料進(jìn)行了水溶液中重金屬Cr（VI）的去除和土壤改良劑兩種不同用途的應(yīng)的研究。首先,采用糠醛渣（FR）、桉樹木屑（ESD）、玉米秸稈（CS）和玉米芯（CC）等為原料,將其在微波輔助水熱碳化反應(yīng)器中以水作為反應(yīng)介質(zhì)進(jìn)行處理,然后對隨后的固體炭質(zhì)產(chǎn)物采用低濃度氫氧化鉀（KOH）進(jìn)行處理,并考察制備的炭質(zhì)材料對Cr（VI）的吸附性能,具體考察對pH、接觸時(shí)間、溫度、溶液濃度等重要參數(shù)對吸附性能的影響。研究結(jié)果表明,采用微波輔助處理KOH濃度,可提高Cr（VI）的吸附能力（FR為36.91 mg/g,ESD為34.07 mg/g,CS為30.15 mg/g,CC為29.46 mg/g）。在吸附最佳條件下（pH 2,25°C,以及2.5 g/L吸附劑用量）,Cr（VI）初始... 

【文章來源】：大連理工大學(xué)遼寧省 211工程院校 985工程院校 教育部直屬院校

【文章頁數(shù)】：82 頁

【學(xué)位級別】：碩士

【文章目錄】：
摘要
Abstract
1 Introduction to Hydrothermal Carbonization of Waste Biomass
    1.1 Research Background
    1.2 Brief Overview of Waste Biomass
        1.2.1 Development Biomass Resource in China
    1.3 Biomass Conversion Technologies
        1.3.1 Hydrothermal Carbonization（HTC）
        1.3.2 End products of HTC
    1.4 Parameters Influencing of HTC
        1.4.1 Effect of Reaction Temperature
        1.4.2 Effect of Reaction Time
        1.4.3 Effect of biomass:water ratio
    1.5 Pyrolysis
    1.6 Gasification
    1.7 Research Objectives
    1.8 Biochar Applications
    1.9 Scope of Thesis
2 Adsorption and kinetic study of furfural residue
    2.1 Introduction
    2.2 Materials and methods
        2.2.1 Reagents
        2.2.2 Preparation of raw materials
        2.2.3 Microwave-assisted HTC
        2.2.4 Modification of prepared hydrochar
        2.2.5 Adsorption experiments
        2.2.6 Analytical method
    2.3 Detailed discussion
        2.3.1 Adsorption capacity and evaluation of hydrochars on Cr（VI）
    2.4 Optimum conditions for microwave-assisted HTC and KOH treatment
        2.4.1 Microwave-assisted HTC temperature
        2.4.2 Potassium hydroxide（KOH）concentration optimization
    2.5 Experiments
        2.5.1 pH experiments
        2.5.2 Contact time experiments
        2.5.3 Kinetics studies
        2.5.4 Adsorption isotherm
        2.5.5 Adsorption thermodynamics parameters
    2.6 Characterization
        2.6.1 Brunauer-Emmett-Teller（BET）
        2.6.2 Scanning Electron Microscope（SEM）
        2.6.3 Fourier Transform Infrared Spectroscopy（FTIR）
3 Soil amendment biochar from HTC for soil application
    3.1 Introduction
    3.2 Materials and Method
        3.2.1 Materials
        3.2.2 Hydrothermal carbonization（HTC）
    3.3 Water holding capacity（WHC）test
    3.4 Soil characterization
    3.5 Hydrochar characterization
    3.6 Statistical Analysis
    3.7 Results and Discussion
        3.7.1 HTC of cattle manure and Eucalyptus sawdust
    3.8 Characterization of hydrochar properties
    3.9 Effects of hydrochar addition on soil properties
        3.9.1 Water holding capacity（WHC）
        3.9.2 Cation exchange capacity（CEC）
4 Heavy Metal Adsorption from Agricultural Waste
    4.1 Production and preparation of ESD,CS and CC
    4.2 Hydrothermal carbonization,modification and characterization
    4.3 Adsorption Experiments
    4.4 Results and discussion
        4.4.1 Adsorption performance on raw material and hydrochar
    4.5 Adsorption parameter
        4.5.1 Effect of pH
        4.5.2 Effect of contact time
        4.5.3 Effect of hydrochar dosage
        4.5.4 Effect of temperature
    4.6 Characterization
        4.6.1 Brunauer-Emmett-Teller（BET）
        4.6.2 Scanning Electron Microscope（SEM）
        4.6.3 Fourier Transform Infrared Spectroscopy（FTIR）
5 Conclusions
    5.1 Future Recommendations
Research Publications in Master Study
References
Acknowledgement


【參考文獻(xiàn)】：
期刊論文
[1]Synthesis of a novel illite@carbon nanocomposite adsorbent for removal of Cr(Ⅵ) from wastewater[J]. Gaofeng Wang,Shan Wang,Wen Sun,Zhiming Sun,Shuilin Zheng.  Journal of Environmental Sciences. 2017(07)



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