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The catalytic gasification properties and reaction kinetics of rice husk (RH) were studied by thermogravimetric analysis (TGA). The homogeneous model (HM) and shrinking core model (SCM) were used to simulate the gasification behaviors. The results indicated that magnesia and ferric oxide had obvious effects on the pyrolysis and gasification properties. They could increase the pyrolysis rate and gasification...
An 8-pixel quartz crystal resonator array with a fundamental resonance frequency of 73 MHz has been designed and fabricated. We established a protocol for selectively functionalizing the surface of resonator array via electrochemical desorption. The creation of hydrophobic and hydrophilic surface with methyl terminated and carboxylate terminated alkanethiols is characterized by Fourier transform spectroscopy...
Batch experiments were carried out to determine the capacity of Pseudomonas fluorescens biomass to adsorb Sr(II) ions from aqueous solution with respect to pH, initial Sr(II) concentration, contact time and biomass dose. The FTIR results of Pseudomonas fluorescens biomass showed that biomass has different functional groups and these functional groups are able to react with metal ion in aqueous solution...
In the present study we reported the feasibility of extra cellular biopolymer( PFC02) produced by Pseudomonas alcaligenes as an alternative biosorbent to remove Co(II) metallic ions from environmental and industrial wastewater. The effects such as pH, dosage of biosorbent, Co(II) initial concentration and sorbate-sorbent contact time and agitating speed on the adsorption capacities of PFC02 were studied...
FTIR micro-spectroscopic imaging analysis is a new and potential tool for subtle changes detection in biochemical composition. The excellent performance and limitation of FTIR technique are briefly discussed in this paper. In order to explore an automatic and efficacious method for chemical composition distinction, principal component analysis (PCA) and least square support vector machine (LS-SVM)...
Nb2O5-Al2O3 nanolaminate films have been grown by atomic layer deposition using (Nb(OC2H5)5)/H2O, and Al(CH3)3/H2O precursors, respectively. Effect of rapid thermal annealing (RTA) on the optical properties of the nanolaminate has been studied using Fourier transform infrared spectroscopy (FTIR), and spectroscopic ellipsometry. From the FTIR result, Al2O3 suppresses the formation of interfacial layer...
Selective catalytic reduction (SCR) of nitrogen oxide (NO) technology has widely applied in a combustion process to decline the concentration of NO due to its impact on the environments concerns. In this study, mesoporous SBA-15 was used as support material to load Cu catalyst to undergo the DeNOx reaction by CO. Cu/SBA-15 catalyst were prepared by polyol method and investigated by XRD, TEM and FTIR...
This paper presents the Carbon Nano-coils (CNCs) which were coated with nickel (Ni) and gold (Au) using electro-less plating method. The property of products was observed by Scanning Electron Microscope (SEM) and Energy Dispersive Spectrometer (EDS) and X-ray diffraction (XRD) and Fourier transformed infrared spectroscopy (FTIR), which shows formation of oxygen containing groups such as OH and COOH...
An anaerobic membrane bioreactor (AnMBR) was employed for the treatment of low-strength municipal wastewater in this study. The membrane filtration performance and pollutant removal efficiency were investigated. A series of measurements, i.e., three dimensional excitation-emission matrix (EEM) analysis, gel filtration chromatography (GFC), Fourier transform infrared (FTIR) analysis, characterization...
Cellulose acetate (CA) fibers loaded with naproxen ester prodrug, naproxen methyl ester, were prepared through a wet-spinning technique by using N, N-dimethylacetamide (DMAc) as a solvent. The chemical and morphological characterizations of the medicated fibers were investigated by means of scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), as well as the studies...
Our senior design project deal with two types of solar cell technologies: industry standard Si-based and the emerging one based on novel dye sensitized materials. Dye sensitized solar cells will be fabricated in a laboratory setting. FTIR and Raman microscopy will be used to study the surface make-up of the novel solar cells. A thin film flexible photovoltaic cell will be characterized. The efficiency...
To study the degradation of low-density polyethylene (LDPE) and cross-linked polyethylene (XLPE) by partial discharge (PD), experiments were conducted in a nitrogen (N2) and (N2+O2) gas atmosphere. After being subjected to the PD, samples were examined using atomic force microscopy (AFM) and FTIR. The AFM images clearly revealed the creation of pits on the surface of degraded samples. A large difference...
An extracellular biopolymer (PS-2) produced by Pseudomonas fluorescence C-2 was used as an alternative biosorbent to remove toxic Pb(II) metallic ions from aqueous solutions. The prepared biosorbent PS-2 were characterized by FTIR and SEM. The effect of experimental parameters such as pH, dosage of biosorbent , Pb(II) initial concentration and contact time on the adsorption was studied. It was found...
The objective of this study is to assess the environmentally friendly Ni(II) adsorption from synthetic wastewater using extracellular biopolymer(PS-2) produced by Pseudomonas fluorescence C-2. The ability of PS-2 to remove the Ni(II) ions was investigated by using batch biosorption procedure. The effects such as pH, dosage of biosorbent, Ni(II) initial concentration and sorbate-sorbent contact time...
Polyacrylonitrile (PAN) fiber was modified with NH2OH and FeCl3 aqueous solution to prepare Fe (III)-amidoximated PAN fiber complex (Fe-AO-PAN), which was characterized using FTIR, XPS, and DRS respectively. Then the photocatalytic activity of Fe-AO-PAN was evaluated in degradation of a typical organic dye, Rhodamine B in the presence of H2O2 under visible light irradiation. The results indicated...
In the present study we reported the feasibility of extracellular biopolymer(PF-9) produced by Pseudomonas fluorescence C-9 as an alternative biosorbent to remove Co(II) and Cd(II) metallic ions from environmental and industrial wastewater. The ability of PF-9 to remove the metallic ions was investigated by using batch biosorption procedure. The effects such as, pH, biosorbent dosage, sorbate concentrations...
Pyrolysis efficiency of used tyres and effect of temperature and pressure in subcritical/supercritical water were studied. Products were analyzed by GS-Mass, FTIR and elementary analyzer. Process of pyrolysis in supercritical /subcritical water was described and analyzed. It demonstrated that compared to subcritical condition, used tyres are decomposed much more completely in supercritical water and...
The mechanism of Pb ( II ) biosorption by Saccharomyces Cerevisiae is investigated by scanning electron microscopy-energy dispersive x-ray (SEM-EDX) spectroscopy, Fourier transform infrared(FTIR) spectroscopy and x-ray photoelectron spectroscopy(XPS). The SEM figures show that the shapes of Saccharomyces Cerevisiae cells doesn't obviously change after the adsorption,but there are many "spots"...
In zero-valent iron (Fe0) treatment systems, the co-presence of humic acid and divalent cations was found to impose combined effects that differ from corresponding individual effects. This study investigated the reactions of Fe0 with humic acid-containing solutions in batch experiments using HPSEC, TEM, FTIR, and XPS analyses. The formation of soluble iron-humate complexes in monovalent cation solution...
The structure evolution of maize straw (MS) particles during pyrolysis was studied. The samples were characterized by ultimate analysis, Fourier transform infrared spectroscopy (FTIR), true density measurement and N2 isothermal adsorption/desorption method. The H/C and O/C atomic ratios decreased from 1.59 and 0.84 in the raw MS to 0.21 and 0.33 at 1173 K respectively, which implied that the char...
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