Thermodynamic database MALT for Windows with gem and CHD

Yokokawa, Harumi; Yamauchi, Shigeru; Matsumoto, Takafumi

doi:10.1016/s0364-5916(02)00032-9

Cited by 95 publications

(52 citation statements)

References 6 publications

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“…Figure 2 shows coexistence lines of Cu 2 O/CuO [5], Cu/Cu 2 O and EuO/Eu 2 O 3 calculated using program MALT-2 [6]. For the preparation of CuLa 1−x Eu x O 2 , sintering was performed at 1273 K under N 2 gas flow with oxygen partial pressure, p(O 2 ), of about 10 −4 atm.…”

Section: Resultsmentioning

confidence: 99%

151Eu Mössbauer measurements of CuLa1 − x Eu x O2 with luminescent property

2011

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An increase of the asymmetric ratio of photoluminescence lines from CuLa 1−x Eu x O 2 was observed under 100 K, suggesting a lower site symmetry for the Eu cation. Mössbauer spectra of CuLa 0.8 Eu 0.2 O 2 measured at 77 K revealed that the valence of Eu is trivalent and that the crystal structure of CuLa 1−x Eu x O 2 might contain a EuO 6 octahedron with lower symmetry. The thermodynamic stability of the valence of Cu and Eu was calculated, showing agreement with Mössbauer spectra.

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Section: Resultsmentioning

confidence: 99%

151Eu Mössbauer measurements of CuLa1 − x Eu x O2 with luminescent property

2011

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“…MALT database was constructed to define the chemical behavior based on the chemical thermodynamic data, especially for using in industrial application. The database of MALT stores about 4,932 compounds in gaseous, liquid, crystal and amorphous form [9]. In this simulation we involved 16 elements consist of carbon (C), hydrogen (H), oxygen (O), nitrogen (N), sulfur (S), chlorine (Cl), phosphorus (P), silicon (Si), aluminum (Al), calcium (Ca), sodium (Na), iron (Fe), potassium (K), lead (Pb), copper (Cu), and zinc (Zn) and there were 765 chemical compounds in the gaseous and condensed form.…”

Section: Material-oriented Little Thermodynamic (Malt) Calculationmentioning

confidence: 99%

Influence of Coagulant Species on Sulfur Oxide (SOx) Emission from the Textile Sewage Sludge Combustion

Rahman¹,

Kishimoto²,

Urabe³

2013

IJESD

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Abstract-Simulation of textile sewage sludge combustion to investigate the typical flue gas generation was carried out by Material-oriented Little Thermodynamic (MALT) software simulation. Textile sewage sludge was modeled on the basis of loadings of effluents, daily usage of dyeing material, heavy chemical for wastewater treatment and daily production of activated sludge. Combustion temperature was set in the range of 500 °C to 1100 °C. In this research the influence of coagulant species used in wastewater treatment on flue gas especially on sulfur oxide (SO x ) generation was investigated. The replacement of conventional coagulant FeSO 4 and Al 2 (SO 4 ) 3 to FeCl 3 gave the result of more than 18% reduction of SO x at the combustion temperature of 850 °C and 19% at the temperature not less than 950 °C. The distribution ratio of sulfur element indicated that SO x especially in the form of SO 2 was generated at the combustion temperature of 700 °C and the concentration increased with a rise in combustion temperature.Index Terms-Textile sewage sludge, coagulant, sulfur oxide (SO x ), MALT. I. INTRODUCTIONTextile sewage sludge as a by-product from textile wastewater treatment causes a serious problem to be faced in textile industry due to its large amount of production and toxicity characteristic. As an illustration, a textile industry common effluent treatment plant (CETP) in Tripur India generated 200 ton of textile sewage sludge everyday [1]. Even in Leuwi Gajah Indonesia, one of textile industry produces sludge at a rate of 5 ton/day [2]. In order to reduce the volume of sludge, an incineration process by combustion is often carried out. This process is advantageous to eliminating the toxicity problem by heat treatment [3]. Another merit of the process is energy recovery from the result of waste burning in an incinerator [4]. Apart from the beneficial role, the combustion process has a disadvantage of releasing various types of gas, volatile organic compound, dioxin, furan and particulates matter [4]. The flue gas generation is another problem due to the difficulty of keeping emission regulation standards. Sulfur oxide (SO x ) in the form of SO 2 and SO 3 is one of major pollutant releasing from combustion treatment. SO x has a corrosive characteristic and plays a significant role for occurrence of acid rain when react Manuscript received April 15, 2013; revised June 13, 2013 with water to form sulfuric acid (H 2 SO 4 ) in the atmosphere. In sewage sludge combustion, the generation of SO x is coming from oxidation of sulfur compounds belong to material constituent of sludge. Generally the emission derived from the combustion treatment depends on the combustion design, the operational condition and the characteristic of waste [4].This research tried to investigate the emission characteristic from the material constituent of sludge point of view. In textile industry, the chemical composition of textile sewage sludge depends on heavy chemicals used in textile processing and textile wastewater treatment process. ...

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“…Equation (3) is correct only when Te vapor molecule is composed of single Te atom such as PbTe and Te. Thermodynamic data 12) suggest that the assumption of PbTe formation is preferable both in gas and liquid as exhibited in Table 4. The Gibbs' free energy change ÁG in PbTe formation reaction is highly negative, and hence Eq.…”

Section: Evaporation Of Te In Lbementioning

confidence: 99%

“…2 is that the vapor increases with Te fraction in LBE (x Te ). To look into the detail of this tendency, the partial vapor pressure of Te obtained Gibb's free energy change 12) 450…”

Section: Evaporation Of Te In Lbementioning

confidence: 99%

Equilibrium Evaporation Behavior of Polonium and Its Homologue Tellurium in Liquid Lead-Bismuth Eutectic

Ohno

Kurata

Miyahara

et al. 2006

J. Nucl. Sci. Technol.

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Experimental study using the transpiration method investigates equilibrium evaporation behavior of radionuclide polonium ( 210 Po) generated and accumulated in liquid lead-bismuth eutectic (LBE) cooled nuclear systems. The experiment consists of two series of tests: preliminary evaporation tests for homologue element tellurium (Te) Bi vapor in a cover gas region of a typical LBE-cooled nuclear system is specifically estimated based on the obtained experimental results, and the importance of 210 Po evaporation behavior is quantitatively demonstrated.

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Thermodynamic database MALT for Windows with gem and CHD

Cited by 95 publications

References 6 publications

151Eu Mössbauer measurements of CuLa1 − x Eu x O2 with luminescent property

151Eu Mössbauer measurements of CuLa1 − x Eu x O2 with luminescent property

Influence of Coagulant Species on Sulfur Oxide (SOx) Emission from the Textile Sewage Sludge Combustion

Equilibrium Evaporation Behavior of Polonium and Its Homologue Tellurium in Liquid Lead-Bismuth Eutectic

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