Biomass and RDF Gasification Utilizing Ballistic Heating TGA Analysis

2017 ◽  
pp. 33-51 ◽  
Author(s):  
M. J. Castaldi
Keyword(s):  
Tga Analysis

Development of a New Method for Determination of the Oil Content from Microalgae Lipid Fraction

2017 ◽  
Vol 68 (4) ◽  
pp. 671-674
Author(s):  
Ana Maria Galan ◽  
Ioan Calinescu ◽  
Elena Radu ◽  
Elena Emilia Oprescu ◽  
Gabriel Vasilievici ◽  
...  
Keyword(s):  
Sunflower Oil ◽  
Oil Content ◽  
Lipid Fraction ◽  
New Method ◽  
Ms Analysis ◽  
Qualitative Determination ◽  
Tga Analysis

The purpose of this study was to develop a method for rapid quantitative and qualitative determination of the oil from microalgae lipid fraction obtained from Nannochloris sp biomass. The lipid fraction was first refluxed with 4% KOH in MeOH (60, 90, 120 min), followed by reaction with 20% BF3 in MeOH, using different times of reflux (90,120, 150 min) for each time of reflux with 4% KOH in MeOH. The FAME samples were analyzed by GC-MS analysis. 120 min reflux with 4% KOH in MeOH, 90 min with 20% BF3 in MeOH and a ratio lipid fraction: 4% KOH in MeOH: 20% BF3 in MeOH=1:20:27, were required to obtain the higher percent of oil in the microalgae lipid fraction. The relevance of the method developed was proved by TGA analysis and by transesterification of a sunflower oil sample in the same conditions.

scholarly journals Effects of Acid Washing and Additives on Qualities of Waste Lubricating Oil

1970 ◽  
Vol 43 (4) ◽  
pp. 529-536
Author(s):  
M Naimul Haque ◽  
M Yunus Miah ◽  
S Ali Ashruf ◽  
M Rafiqul Islam ◽  
A Kumar Das
Keyword(s):  
Pour Point ◽  
Environmental Problem ◽  
Economic Effect ◽  
Viscosity Index ◽  
Maximum Yield ◽  
Lubricating Oil ◽  
Acid Washing ◽  
Different Types ◽  
Fuller’S Earth ◽  
Tga Analysis

Waste lubricating oil has been reclaimed by treatment with commercial sulphuric acid followed by adsorption on fuller's earth. A maximum yield (75%) of reclaimed oil at acid- oil ratio of 10:100 with addition of 10% (w/v) fuller's earth has been obtained. Properties of reclaimed oil such as viscosity index, pour point, colour etc. have been improved from 93.4, +2, 5.0 to 109, -10.5, 4.0 by addition of certain proportion of additives. TGA analysis of waste lubricating oil, reclaimed oil and fresh lubricating oil has also been studied. The reclaimed oil obtained after addition of different types of additives is very comparable to SAE 30 grade lubricating oil in terms of properties and is applicable as a standard lubricant. Such a reuse of waste lubricating oil, in addition to its economic effect will help to reduce environmental problem. Key words: Lubricating oil, TGA analysis, Envirormentl problem and Vscosity index.      doi: 10.3329/bjsir.v43i4.2243 Bangladesh J. Sci. Ind. Res. 43(4), 529-536, 2008

scholarly journals Synthesis and Characterisation of Ligand Free Cadmium Imprinted Polymer for Sensing of Cd(II) from Aqueous Solution

2019 ◽  
Vol 4 (3) ◽  
pp. 153-157
Author(s):  
Anuradha Baghel ◽  
Akula Bhuvaneswari ◽  
Virendra Vikram Singh ◽  
Mannan Boopathi ◽  
Beer Singh
Keyword(s):  
Aqueous Solution ◽  
Complete Removal ◽  
Carbonyl Oxygen ◽  
Sem Analysis ◽  
Bet Surface Area ◽  
Imprinted Polymer ◽  
Selective Electrode ◽  
Ligand Free ◽  
Interference Study ◽  
Tga Analysis

Cadmium(II)-imprinted polymer [Cd(II)-IIP] was synthesized without using the conventional complexing ligand to reduce unnecessary step for complexing Cd(II). During synthesis of Cd(II)-IIP, the complete removal of Cd(II) from the polymer was confirmed using EDAX and AAS. Synthesized polymers ([Cd(II)-IIP], non-imprinted polymer (NIP) and polymer with cadmium (CdP) were also characterized and compared. SEM analysis of Cd(II)-IIP indicated the changes in surface morphology after imprinting, the polymer looked like a flaky material in comparison with NIP and CdP. BET surface area of Cd(II)-IIP (68 m2/g) was found to be more than that of NIP (24.6 m2/g) and CdP (17 m2/g). Cd(II)-IIP formed a complex with Cd(II) in the solution through carbonyl oxygen of the acrylamide as confirmed by FTIR. TGA analysis showed less char yield for Cd(II)-IIP than NIP. Cd(II)-IIP was further explored for the fabrication of ion selective electrode (ISE), which on binding with Cd(II) gave higher potential than NIP-ISE. Interference study was also performed using Cd(II)-IIP as such and also with fabricated ISE with Cd(II)-IIP using different cations such as Pb(II), Zn(II), Mn(II), Hg(II), and found that imprinted polymer showed more selectivity towards Cd(II) in aqueous solutions.

scholarly journals Facile Preparation and Characterization of Carbon Fibers with Core-Shell Structure from Graphene-Dispersed Isotropic Pitch Compounds

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 521
Author(s):  
Dong Lee ◽  
Yong-Hwan Choi ◽  
Kyong Rhee ◽  
Kap Yang ◽  
Byung-Joo Kim
Keyword(s):  
Carbon Fibers ◽  
Shell Structure ◽  
Thermal Characteristics ◽  
Surface Region ◽  
Petroleum Residue ◽  
Core Shell ◽  
Isotropic Pitch ◽  
Core Shell Structure ◽  
Tga Analysis

In this study, isotropic pitch-based carbon fibers were prepared from a mixture of petroleum residue and graphene nanoplatelets with different contents. The softening point and synthetic yield of synthesized isotropic pitches were analyzed and compared to characterize the nature of the pitches. The surface and thermal characteristics of the fibers were observed using scanning electron microscopy and thermogravimetric analysis (TGA), respectively. From the results, it was observed that the prepared carbon fibers had an interesting core-shell structure. In the TGA analysis with air, the carbon fiber having 0.1 wt.% of graphene showed a higher residue yield than that of the sample having 1.0 wt.% of graphene. This result can be explained due to the graphene being placed on the surface region of the carbon fibers and directly helping to increase the surface area of the carbon fibers, resulting in rapid oxidation due to the enhanced contact area with oxygen.

scholarly journals DMSO Intercalation in Selected Kaolinites: Influence of the Crystallinity

2020 ◽  
Vol 4 (4) ◽  
pp. 66
Author(s):  
Jean-Aimé Mbey ◽  
Jean Mermoz Siéwé ◽  
Cyrill Joël Ngally Sabouang ◽  
Angelina Razafitianamaharavo ◽  
Sakeo Kong ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Thermogravimetric Analysis ◽  
Thermal Analyses ◽  
Domain Size ◽  
Coherent Scattering ◽  
Coherent Scattering Domain ◽  
Scanning Calorimetry ◽  
Xrd Patterns ◽  
Coherent Scattering Domain Size ◽  
Tga Analysis

The present study deals with the relation between crystalline order in kaolinites and their ability to intercalate DMSO. Raw clays and kaolinite–DMSO complexes are analyzed using FTIR, XRD powder diffraction and differential scanning calorimetry and thermogravimetric analysis (DSC-TGA). The crystallinity is accessed using the Hinckley index (HI) from the raw clays’ XRD patterns and the p2 factor from their FTIR spectra. The intercalation ratio is evaluated from XRD and compared among the samples. The thermal analyses show a decrease in the dehydroxylation temperature in the DMSO–kaolinite complexes, indicating a decrease in the interlayer cohesion that may be useful to improve the delamination of kaolinite. The analysis of the coherent scattering domain size in the raw and the DMSO-intercalated samples indicates that the ordering is not affected during the DMSO intercalation. From these results, it is deduced that DMSO intercalation is favored by an increased crystallinity, as revealed by the intercalation ratio from XRD and the DSMO release during DSC-TGA analysis.

scholarly journals Functional Supramolecular of Inclusion Complex of Herbicide Fluroxypyr with HPβCD

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1294 ◽  
Author(s):  
Shuang Gao ◽  
Chao Bie ◽  
Yanyan Liu ◽  
Tianyu Zhang ◽  
Ying Fu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Inclusion Complex ◽  
Solution Method ◽  
Water Solubility ◽  
Herbicidal Activity ◽  
Saturated Solution ◽  
Phase Solubility ◽  
Bioactivity Assay ◽  
Ft Ir ◽  
Tga Analysis

In this study, hydroxypropyl-β-cyclodextrin (HPβCD) was used to form an inclusion complex with fluroxypyr to enhance water solubility and thermal stability. The inclusion complex was prepared by a saturated solution method and characterized by FT-IR, SEM, TGA, and XRD. All results indicated that fluroxypyr successfully entered the HPβCD cavity. In addition, the study of phase solubility identifies that the water solubility of fluroxypyr was greatly improved after the formation of the inclusion complex, and TGA analysis suggested that the formation of the inclusion complex improved the thermal stability. Bioactivity assay tests showed that the inclusion complex still had strong herbicidal activity. Our research showed that HPβCD was a promising carrier for improving the properties of fluroxypyr and, thus, expanding its use in agrochemical formulations.

scholarly journals Creating artificial Rhino Horns from Horse Hair

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ruixin Mi ◽  
Z. Z. Shao ◽  
F. Vollrath
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Composite Structures ◽  
Similar Chemical Composition ◽  
The Real ◽  
Similar Chemical ◽  
Horse Hair ◽  
Ft Ir ◽  
Tga Analysis

Abstract Demand for rhino horn is driving poaching with devastating effect for the few individuals left of the few species surviving from this once numerous, widespread and cosmopolitan clade of pachyderms. We bundled together tail hairs of the rhino’s ubiquitous near relative, the horse, to be glued together with a bespoke matrix of regenerated silk mimicking the collagenous component of the real horn. This approach allowed us to fabricate composite structures that were confusingly similar to real rhino horn in look, feel and properties. Spectral and thermal FT-IR, DSC and TGA analysis demonstrated the similar chemical composition and thermo-mechanical properties between the natural and the faux horns.

Reinforcement of NR with ENR Modified RHA

2012 ◽  
Vol 581-582 ◽  
pp. 663-667
Author(s):  
Zong Qiang Zeng ◽  
Hong Chao Liu ◽  
He Ping Yu
Keyword(s):  
Thermal Stability ◽  
Glass Transition ◽  
Transition Temperature ◽  
Natural Rubber ◽  
Rice Husk Ash ◽  
Dynamic Properties ◽  
Natural Rubber Latex ◽  
Morphological Structure ◽  
Rubber Latex ◽  
Tga Analysis

The rice husk ash (RHA) was first modified with epoxidized natural rubber latex (ENRL) and then blended with natural rubber latex (NRL) to prepare NR/RHA composite. The morphological structure, thermal stability and dynamic properties were studied with multiple instruments. FTIR and TGA analysis showed that ENR was grafted onto the surface of RHA. The composite prepared with modified RHA showed better dispersity and reinforcement compared to the composite with unmodified RHA, and the glass-transition temperature tended to be higher.

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