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6.035 Aktuelle Fachpublikationen aus der Branche Verfahrenstechnik

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H2S Reactive Absorption from Off‐gas in a Spray Column: Insights from Experimental and Modeling

26.08.2015 | Fatemeh Bashipour, Saied Nouri Khorasani, Amir Rahimi, Chemical Engineering & Technology, 2015

Abstract H2S removal from off‐gas stream was performed in a spray column by H2S reactive absorption into NaOH solution. The individual and interactive effects of three independent operating variables on percentage of absorbed H2S were investigated: the initial pH of scrubbing solution (pH0), ...

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Retention of biopolymers by ultrafiltration membranes

26.08.2015 | Elizabeth Arkhangelsky, Inna Levitsky, Vitaly Gitis, Chemical Engineering & Technology, 2015

Abstract Separation of biopolymers is one of increasingly important applications of ultrafiltration (UF) membranes. The efficiency of separation is often evaluated through pilot experiments and seldom predicted. Available predictions focus on correlations between UF pore width and biopolymer ...

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A kinetic model for invertase‐induced sucrose hydrolysis: considering the initial time lag

26.08.2015 | Ali Keramat, Ali Kargari, Morteza Sohrabi, Hamed Mirshekar, Hamidreza Sanaeepur, Chemical Engineering & Technology, 2015

Abstract The kinetics of sucrose hydrolysis by invertase was studied in order to find a comprehensive model for the reaction pathway and mechanism. First, three common models of Michaelis–Menten [MM], substrate inhibition [S2] and substrate clusters’ inhibition [S3(I)] were investigated and it ...

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Enhanced Silica Removal By Polyamine‐ and Polyacrylamide‐Polyaluminum Hybrid Coagulants

26.08.2015 | Ruben Miranda, Isabel Latour, Arne Hörsken, Rocío Jarabo, Angeles Blanco, Chemical Engineering & Technology, 2015

Abstract Silica removal is the main bottleneck for a high reuse of deinking paper mill effluents due to silica scaling on the reverse osmosis units generally used. This study analyzes the efficiency of inorganic‐organic hybrid coagulants formed by the combination of a polyaluminum nitrate ...

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Design and numerical simulation analysis of an integrative gas‐liquid‐solid separation hydrocyclone

26.08.2015 | Lixin Zhao, Yiqiang Li, Baorui Xu, Minghu Jiang, Chemical Engineering & Technology, 2015

Abstract Normally a gas‐liquid‐solid separation includes both de‐gassing and de‐sanding processes, which means a relatively more expensive facility investment and larger energy consumption. Based on an inner‐cone hydrocyclone developed before, an integrative de‐gassing and de‐sanding ...

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An efficient optimal method for a 2D strain estimation of ultrasound tissue‐mimicking material phantom

25.08.2015 | Haijiang Zhu, Shifeng Zhou, Ping Yang, Longbiao He, Jinglin Zhou, Polymer Engineering and Science, 2015

Elastography is a relatively new technique in ultrasound or magnetic resonance imaging (MRI). This fact has motivated many investigators to investigate the preparation of tissue‐mimicking material and the imaging of the tissue‐mimicking phantom. In this article, an efficient numerical ...

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Preparation and characterization of pH‐sensitive hydrogel microspheres based on atom transfer radical polymerization

25.08.2015 | Hong‐Zheng Zhu, Li‐Qin You, Hong‐Liang Wei, Guo‐Feng Wang, Hui‐Juan Chu, Jing Zhu, Juan He, Polymer Engineering and Science, 2015

In this study, we prepared pH‐sensitive hydrogel microspheres by means of atom transfer radical polymerization of hydroxyethyl methacrylate and 4‐vinylpyridine in inverse emulsion, using poly (ethylene glycol) dimethylacrylate as a crosslinker. One‐factor experiment was used to optimize ...

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HAZOP analysis‐based dynamic simulation and its application in chemical processes

25.08.2015 | Wende Tian, Tingzhao Du, Shanjun Mu, Asia-Pacific Journal of Chemical Engineering, 2015

Abstract Hazard and operability analysis (HAZOP) is widely applied in petroleum industry as a scientific and effective safety analysis method, but it is traditionally qualitative in essence and hereby has such shortages as vague conclusions, susceptible to human factor, lack of comprehensive ...

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Carbon dioxide adsorption by modified carbon nanotubes

24.08.2015 | Narges Omidfar, Ali Mohamadalizadeh, Seyed Hamed Mousavi, Asia-Pacific Journal of Chemical Engineering, 2015

Abstract In this study the CO2 adsorption of three different diameters of multi‐walled carbon nanotubes (MWCNT) and single‐walled carbon nanotube (SWCNT) was investigated for a mixture of CO2/Ar at a temperature of 70 °C and atmospheric pressure. The largest diameter of MWCNT showed the ...

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Effect of γ‐irradiation on glycolysis of PET waste and preparation of ecofriendly coatings using bio‐based and recycled materials

21.08.2015 | Vandana Jamdar, Mukesh Kathalewar, R.N. Jagtap, Kumar Abhinav Dubey, Anagha Sabnis, Polymer Engineering and Science, 2015

Recycling of postconsumer poly (ethylene terephthalate) (PET) is a worldwide concern due to large increasing volume of these materials produced by society. In the present study, we report the effect of gamma irradiation on degradation of PET and its subsequent effect on glycolysis by using ...

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