scholarly journals TG/DTA-FTIR Study on Total Resource Recovery from Tetra Pak Waste by Pyrolysis under a CO2 Environment

2018 ◽  
Vol 43 (3-4) ◽  
pp. 229-235
Author(s):  
Hanxin Huo ◽  
Yuhui Ma
Keyword(s):  
Cooling Process ◽  
Infrared Spectrometer ◽  
Thermal Analyser ◽  
Differential Thermal Analyser ◽  
Tetra Pak ◽  
Pyrolytic Char ◽  
Paper Filler ◽  
Main Component ◽  
Total Resource ◽  
Co2 Environment

Pyrolysis of Tetra Pak waste under CO2 was investigated using a thermogravimetric/differential thermal analyser coupled with a Fourier transform infrared spectrometer. Experimental results showed that cellulose was decomposed between 270 and 390 °C, leading to the formation of aldehydes, ketones, carboxylic acids and levoglucosan. Thermal cracking of polyethylene occurred between 440 and 530 °C and the main products were aliphatic hydrocarbons. CO can be produced by the gasification of pyrolytic char by CO2 at temperatures ranging from 860–970 °C. Aluminium (Al) foil remained in a “thin layer shape” despite melting above 660 °C. CaO was generated from the decomposition of CaCO3 used as a paper filler at 722 °C. The reaction between CaO and the CO2 atmosphere during the cooling process led to the formation of new CaCO3 which was the main component of ash after gasification and was easy to separate from Al foil.

Differential Thermal Analyser (DTA)

2016 ◽  
Author(s):  
Michael Hess ◽  
Giuseppe Allegra ◽  
Jiasong He ◽  
Kazuyuki Horie ◽  
Joon-Seop Kim ◽  
...  
Keyword(s):  
Thermal Analyser ◽  
Differential Thermal Analyser

A pyrometric differential thermal analyser for high temperatures

1977 ◽  
Vol 20 (1) ◽  
pp. 17-22 ◽  
Author(s):  
F. Wehner ◽  
E.-Th. Henig ◽  
H.L. Lukas
Keyword(s):  
High Temperatures ◽  
Thermal Analyser ◽  
Differential Thermal Analyser

Thermal and Structural Properties of Erbium/Neodymium Co-Doped Lithium-Magnesium-Tellurite Glass

2015 ◽  
Vol 1107 ◽  
pp. 466-470 ◽  
Author(s):  
Ramli Arifin ◽  
S. Akmar Roslan ◽  
M.R. Sahar ◽  
S.K. Ghoshal ◽  
K. Hamzah
Keyword(s):  
Thermal Stability ◽  
Structural Properties ◽  
Tellurite Glass ◽  
Rare Earth Doping ◽  
X Ray Diffraction ◽  
Co Doping ◽  
Thermal Analyser ◽  
Differential Thermal Analyser ◽  
The Difference ◽  
Inorganic Glasses

Detailed characterizations of inorganic glasses via optimized rare earth doping/co-doping are challenging. Tellurite glasses with composition (78-x)TeO2-10Li2O-10MgO-2Nd2O3-xEr2O3, (where x = 0.4 to 2.0 mol%) are prepared by melt-quenching technique. The effects of Er2O3 concentration on the thermal stability and structural properties are examined. The X-ray diffraction pattern confirms the glassy nature of all samples. The temperature of glass transition (Tg), crystallization (Tc), melting (Tm) and the difference (Tc-Tg) are determined by differential thermal analyser (DTA). The values of Tc, Tg and Tm are found to vary in the range of 419-430 °C, 300-345 °C and 885-890 °C, respectively. The glass sample with 0.4 mol% Er2O3 shows highest thermal stability. The FTIR spectra measured in the range of 400 - 4000 cm1 exhibits two major absorption peaks around 1600 - 3600 cm1 and 900 - 1200 cm1 assigned to the stretching vibrational mode of OH and Te-OH respectively. Improvements in the optical and thermal properties due to co-doping may be useful for the development of tellurite glass based photonics.

scholarly journals Background CO<sub>2</sub> levels and error analysis from ground-based solar absorption IR measurements in central Mexico

2017 ◽  
Vol 10 (7) ◽  
pp. 2425-2434 ◽  
Author(s):  
Jorge L. Baylon ◽  
Wolfgang Stremme ◽  
Michel Grutter ◽  
Frank Hase ◽  
Thomas Blumenstock
Keyword(s):  
Beam Splitter ◽  
Total Carbon ◽  
Central Mexico ◽  
Data Set ◽  
Solar Absorption ◽  
Diurnal Cycles ◽  
Infrared Spectrometer ◽  
The Mean ◽  
Main Component ◽  
Total Column

Abstract. In this investigation we analyze two common optical configurations to retrieve CO2 total column amounts from solar absorption infrared spectra. The noise errors using either a KBr or a CaF2 beam splitter, a main component of a Fourier transform infrared spectrometer (FTIR), are quantified in order to assess the relative precisions of the measurements. The configuration using a CaF2 beam splitter, as deployed by the instruments which contribute to the Total Carbon Column Observing Network (TCCON), shows a slightly better precision. However, we show that the precisions in XCO2 ( =  0.2095  ⋅  Total Column CO2Total Column O2) retrieved from  >  96 % of the spectra measured with a KBr beam splitter fall well below 0.2 %. A bias in XCO2 (KBr − CaF2) of +0.56 ± 0.25 ppm was found when using an independent data set as reference. This value, which corresponds to +0.14 ± 0.064 %, is slightly larger than the mean precisions obtained. A 3-year XCO2 time series from FTIR measurements at the high-altitude site of Altzomoni in central Mexico presents clear annual and diurnal cycles, and a trend of +2.2 ppm yr−1 could be determined.

Formation of Bio-Fuel from Waste Plastic Scrap

2015 ◽  
Vol 766-767 ◽  
pp. 551-556
Author(s):  
B. Kanimozhi ◽  
Amit Tanaji Shinde ◽  
Ashutosh Kumar ◽  
Alok Kumar
Keyword(s):  
Laboratory Testing ◽  
Waste Plastics ◽  
Pyrolysis Process ◽  
Cooling Process ◽  
Waste Plastic ◽  
Three Phase ◽  
Gaseous Hydrocarbons ◽  
Main Component ◽  
Cooling Coil ◽  
Electric Supply

The objective of the paper is to investigate the formation of Bio-fuel from waste plastic scrap. The experiment was carried out by converting the waste plastic into useful alternative oil by means of pyrolysis process. Main component of working model were furnace as heating coil and condenser as cooling coil tube. The arrangements have made to continue the process constantly. The waste plastics have kept in furnace. The furnace having heating coils which provides required heat to melt the waste plastics by three phase electric supply. Due to the high temperature in furnace waste plastics have been melted and liquefied at 350°C and formed as a vapour at 450° C. Then these vapours were sent to condenser which cools from heated vapour into liquefied oil by cooling process with slow down temperature of 30°C to 35°C. Here the vapour is fully consisting of gaseous hydrocarbons property. These hydro carbons can be used as a bio fuel after the condensation. The fuel properties were tested in reputed laboratory testing centre.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF COMPLEX DIAQUADIHYDANTOIN NICKEL(II) SULFAT MONOHIDRAT)

2016 ◽  
Vol 10 (2) ◽  
pp. 137
Author(s):  
Sentot Budi Rahardjo ◽  
Surya Dewi Marliyana ◽  
Nur Asih Siwi Wulandari
Keyword(s):  
Thermal Analysis ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Functional Group ◽  
Synthesis And Characterization ◽  
Infra Red ◽  
Thermal Analyser ◽  
Differential Thermal Analyser

<p>The purpose of the research is to find out the synthesis, formula and characteristic of complex of Nickel(II) with hydantoin (hyd). Complex of nickel(II) with  hydantoin  have been synthesized in 1 : 1 mole ratio of metal to ligan in methanol.The formula of  complex which are predicted from analysis of % Ni in complex by Atomic Absorption Spectroscopy (AAS) is Ni(hyd)<sub>2</sub>(H<sub>2</sub>O)<sub>3</sub>.SO<sub>4</sub>.  Ratio  of  cation  and  anion  of  complex  is  measured  by conductivitymeter  correspond to 1: 1.  The thermal analysis  is determined  by Differential Thermal  Analyser  (DTA)  indicate  that  complex  contain  some  hydrate,  thus  possibility formula  of  complex  is  [Ni(hyd)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]SO<sub>4</sub>.H<sub>2</sub>O (Diaquadihydantoinnikel(II) sulfat monohidrat).  Data  of  infra  red  spectra  show  a  shift  of  N-H  group  and  tertier  N  group 138 absorption  and  indicate  this  functional  group  coordinated  to  the  center  ion.  Magnetic Suscepbility measurement show that the complex is paramagnetic with μ<sub>eff</sub>  = 3.2  BM. The UV-Vis spectra appear do to 2 transition peak on  λ  =  740 nm (13,513 cm<sup>-1</sup>) and  405 nm (24,691 cm<sup>-1</sup>).  The peak indicate that structure of complex is octahedral with transition <sup>3</sup>A<sub>2g</sub>→ <sup>3</sup>T<sub>1g</sub>(P)(ν<sub>2</sub>) andtransition <sup>3</sup>A<sub>2g</sub>  → <sup>3</sup>T<sub>1g</sub>(F)(ν<sub>3</sub>). One peak which  is  not appear is transition <sup>3</sup>A<sub>2g</sub> → <sup>3</sup>T<sub>2g</sub> (F)(ν<sub>1</sub>) which also estimate of 10 Dq (Δ<sub>0</sub>) is 103.615 kJ mol<sup>-1</sup>.</p>

scholarly journals A Significant Role of MoO3 on the Optical, Thermal, and Radiation Shielding Characteristics of B2O3-P2O5 -Li2O Glasses

2021 ◽  
Author(s):  
kh. S. Shaaban
Keyword(s):  
Glass Transition ◽  
Energy Gap ◽  
Radiation Shielding ◽  
Melt Quenching ◽  
Dispersion Parameters ◽  
The Status ◽  
Thermal Analyser ◽  
Differential Thermal Analyser ◽  
Glass Crystallisation

Abstract Glasses based on borophosphate with the formula 42.5P2O5 – 42.5B2O3 – (15-x) Li2O – xMoO3 mol% where 𝑥 = (0 ≤ 𝑥 ≥ 15) were manufactured using the melt-quenching methodology. The status of prepared samples wasidentified by (XRD). The temperature of the glass transition Tg, the temperature of onset glass crystallisation Tc and the temperature of the crystallisation Tp were evaluated using a differential thermal analyser (DTA). The energy gap (𝐸𝑜𝑝𝑡), Urbach (𝐸𝑢), and parameters of dispersion were calculated through the data of optical spectra. Physical properties were determined and calculated, such as molar refractivity, metallization, electron polarizability, electronegativity, loss of reflection and dispersion parameters. Raising MoO3 at the expense of Li2O was used to assess the level of protection. For radiation protection applications, the glasses under investigation had superior characteristics.

scholarly journals Micro Differential Thermal Analyser

1968 ◽  
Vol 71 (12) ◽  
pp. 2002-2006 ◽  
Author(s):  
Akira YAMAMOTO ◽  
Kiyotsugu YAMADA ◽  
Jun-ichi AKIYAMA ◽  
Takayuki OKINO
Keyword(s):  
Thermal Analyser ◽  
Differential Thermal Analyser
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