Chemical Engineering & Technology

Cover image for Vol. 38 Issue 3

March, 2015

Volume 38, Issue 3

Pages 378–555

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Highlights
    7. Research Articles
    8. Communication
    9. Overview
    1. You have free access to this content
      Cover Chem. Eng. Technol. 3/2015

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201590006

  2. Editorial Board

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Highlights
    7. Research Articles
    8. Communication
    9. Overview
    1. Editorial Board Chem. Eng. Technol. 3/2015 (page 378)

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201590007

  3. Overview

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Highlights
    7. Research Articles
    8. Communication
    9. Overview
    1. Overview Contents: Chem. Eng. Technol. 3/2015 (page 379)

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201590008

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Highlights
    7. Research Articles
    8. Communication
    9. Overview
    1. You have free access to this content
      Contents: Chem. Eng. Technol. 3/2015 (pages 380–386)

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201590009

  5. Highlights

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Highlights
    7. Research Articles
    8. Communication
    9. Overview
    1. Highlights: Chem. Eng. Technol. 3/2015 (pages 388–389)

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201590010

  6. Research Articles

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Highlights
    7. Research Articles
    8. Communication
    9. Overview
    1. Discrete Modeling of Growth of Hairy Roots in a Mist Bioreactor (pages 391–398)

      Ritu Ranjan, Sambasiva Rao Katuri and Rajesh Khanna

      Article first published online: 21 JAN 2015 | DOI: 10.1002/ceat.201400402

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      Industrial production of secondary metabolites from hairy roots remains challenging. A design strategy is developed to evaluate the impact of decisive parameters on the growth of hairy roots in a reactor by defining a discrete mathematical model. Its integration with spatio-temporal variation of nutrients in a reactor will be an essential contribution to large-scale production of hairy roots.

    2. Multiple Regression Analysis of Catalytic Dehydrogenation of Isopropanol in a Chemical Heat Pump System (pages 399–408)

      Mehmet Selçuk Mert, İnci Salt, Fatma Karaca, Hatice Hande Mert and Esen Bolat

      Article first published online: 22 DEC 2014 | DOI: 10.1002/ceat.201400277

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      As a clean technology, chemical heat pumps are able to upgrade low-level thermal energy to upper levels and store energy without losses. Dehydrogenation of isopropanol can serve as a first step in such a system. The enhancing effects of Raney-Ni, Pt/C, and Ru/C type catalysts and alkaline NaOH additive on the dehydrogenation reaction of isopropanol were investigated statistically.

    3. Reactivation and Reuse of Platinum-Based Spent Catalysts for Combustion of Exhaust Organic Gases (pages 409–415)

      Zebao Rui, Shangren Wu, Hongbing Ji and Zili Liu

      Article first published online: 21 JAN 2015 | DOI: 10.1002/ceat.201400467

      Thumbnail image of graphical abstract

      Catalytic combustion of trace methane and toluene over a Pt-based spent catalyst modified by different pretreatment techniques was performed to assess the possibility of recycling the spent catalyst. NaBH4 solution treatment is a nondestructive and environmentally friendly method leading to better performance of the reactivated catalyst in comparison with the high-temperature gas treatment.

    4. Fouling Resistance on Chemically Etched Hydrophobic Surfaces in Nucleate Pool Boiling (pages 416–422)

      Longfei Hui, Mingyan Liu, Yongwei Cai and Yan Lv

      Article first published online: 8 JAN 2015 | DOI: 10.1002/ceat.201400194

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      Surface topography and chemistry modifications are commonly applied to improve the pool boiling and anti-fouling performance of surfaces. Rough surfaces could enhance pool boiling but show higher fouling resistance. Highly hydrophobic micro- and nano-scale coating surfaces on stainless-steel substrates were fabricated and their performance in a pool boiling process was evaluated.

    5. Bed Expansion and Particle Classification in Liquid Fluidized Beds with Structured Internals (pages 423–430)

      Stella Piovano, Gabriel L. Salierno, Emiliano Montmany, Mauro D'Agostino, Mauricio Maestri and Miryan Cassanello

      Article first published online: 21 JAN 2015 | DOI: 10.1002/ceat.201400463

      Thumbnail image of graphical abstract

      A liquid-solid fluidized bed with internal allows extending the liquid velocity operation range before elutriation. A correlation to estimate the bed expansion in liquid-solid fluidized beds using structured packing as internals is proposed. Structured packing as internal in a liquid fluidized bed significantly favors classification of particles by density.

    6. Silica-Supported Phosphotungstic Acid for Gas Phase Dehydration of Glycerol (pages 431–440)

      Martin Herbon, Andreas Lange, Michael Weiß, Wladimir Suprun and Dirk Enke

      Article first published online: 4 FEB 2015 | DOI: 10.1002/ceat.201400495

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      Raw glycerol containing water is an interesting alternative for the synthesis of fine and crude chemicals, notably for conversion into acrolein, but the required catalysts are still in development. Tungsten-heteropolyacids incorporated by sol–gel inclusion into a hierarchically structured silica network show high leaching stability and catalytic activity in the gas phase dehydration of glycerol.

    7. Copper Ion Cementation in Presence of a Magnetic Field (pages 441–445)

      Olfat A. Fadali, Mohamed Obaid, Mohamed S. Mahmoud, Taha E. Farrag, Kim TaeWoo, Khalil Abdelrazek Khalil and Nasser A. M. Barakat

      Article first published online: 21 JAN 2015 | DOI: 10.1002/ceat.201400153

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      Relatively few reports are available on the effect of the direction of a magnetic field on an electrochemical process. Here, the copper cementation process was selected to investigate the effect of changing the direction of an electromagnetic field. The rate of cementation was enhanced in both parallel and perpendicular direction of the magnetic field with the latter being more effective.

    8. Raschig Super-Ring Operating Characteristics in Unpulsed Liquid-Liquid Extraction Columns (pages 446–454)

      Mark W. Hlawitschka, Stephan Schmidt, Hans-Jörg Bart and Michael Schultes

      Article first published online: 4 FEB 2015 | DOI: 10.1002/ceat.201400561

      Thumbnail image of graphical abstract

      Raschig Super-Rings are known to offer good performance in rectification, absorption, and desorption columns. Hydrodynamics and separation efficiency of four packing materials, namely, two Raschig Super-Rings and two Pall-Rings, were experimentally examined for the first time. Hydrodynamic studies confirm a significantly higher load capacity of the Raschig Super-Ring.

    9. Green Process of Propylene Oxide Reaction for Thermal Hazard Assessment by Differential Scanning Calorimetry and Simulation (pages 455–462)

      Tien-Szu Wang, Shang-Hao Liu, Yu-Chi Lin, Ying-Cyuan Chen and Chi-Min Shu

      Article first published online: 4 FEB 2015 | DOI: 10.1002/ceat.201400117

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      Since H2O2 is a strong oxidant with serious fire and explosion risks at higher concentrations, a prudent assessment of H2O2 application is required. The effect of the runaway reaction of propylene oxide in the presence of H2O2 was evaluated by differential scanning calorimetry and simulation. Thermal stability parameters were defined for the design of safer process conditions.

    10. Simulation of a Lignite-Based Polygeneration System Coproducing Electricity and Tar with Carbon Capture (pages 463–472)

      Zhihang Guo, Qinhui Wang, Mengxiang Fang, Zhongyang Luo and Kefa Cen

      Article first published online: 3 FEB 2015 | DOI: 10.1002/ceat.201300759

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      To coproduce tar and electricity, an innovative lignite pyrolysis-based polygeneration system is proposed and evaluated by steady-state simulation. The integration of carbon capture and storage into the polygeneration system is simulated and optimized. The effects of capturing CO2 on performance and CO2 emissions of the polygeneration system are studied.

    11. Numerical Simulation of Single-Bubble Dynamics in High-Viscosity Ionic Liquids Using the Level-Set Method (pages 473–481)

      Danilo Carvajal, Carlos Carlesi, Victor Meléndez-Vejar, Dreidy Vásquez-Sandoval, Alessandro H. A. Monteverde-Videla and Samir Bensaid

      Article first published online: 3 FEB 2015 | DOI: 10.1002/ceat.201400449

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      Ionic liquids (ILs) represent promising solvents for CO2 capture. In order to study the dynamics of formation and rise of bubbles in high-viscosity ILs, computational fluid dynamics models based on the level-set method were created and validated with experimental data. The models predict the velocity and pressure fields near the bubble surface, the bubble rising velocity, and shape dynamics.

    12. Application of Strong Porous Polymer Sheets for Superior Oil Spill Recovery (pages 482–488)

      Junaid Saleem, Alireza Bazargan, John Barford and Gordon McKay

      Article first published online: 23 JAN 2015 | DOI: 10.1002/ceat.201400068

      Thumbnail image of graphical abstract

      Natural and synthetic sorbents to control oil spills are increasingly demanded due to environmental concerns. Newly developed super oil sorbent polymer sheets made of porous ultrahigh-molecular-weight polyethylene provide exceptionally high uptake and retention capacities together with a mechanically strong structure. They are applicable in all types of oil spill sites.

    13. Assessment of Scale-Up Parameters of Microwave-Assisted Extraction via the Extraction of Flavonoids from Cocoa Leaves (pages 489–496)

      Chung-Hung Chan, Rozita Yusoff and Gek-Cheng Ngoh

      Article first published online: 5 FEB 2015 | DOI: 10.1002/ceat.201400459

      Thumbnail image of graphical abstract

      With the emergence of non-conventional extraction techniques such as microwave-assisted extraction (MAE), the extraction of active compounds from plants has increased in recent years. Kinetic modeling of MAE of flavonoids from cocoa leaves was performed to investigate suitable scale-up parameters for the process.

    14. Effect of the Mg/Al Atomic Ratio of Ni-Mg-Al Catalysts for the Hydrodealkylation of 1,2,4-Trimethylbenzene (pages 497–503)

      Shuang Gao, Shubo Zhai, Jianbiao Yan, Zhenlu Wang and Liyan Wang

      Article first published online: 5 FEB 2015 | DOI: 10.1002/ceat.201400154

      Thumbnail image of graphical abstract

      1,2,4-Trimethyl-benzene (1,2,4-TMB) is the major component in C9+ heavy aromatics originating from the catalytic reforming process. The influence of the Mg content on the performance of Ni-Mg-Al catalysts in the hydrodealkylation of 1,2,4-TMB to benzene, toluene and xylenes (BTX) is investigated. Synergetic effects between Ni0, NiAl2O4 and MgAl2O4 increased the BTX yield.

    15. Application of Minihydrocyclones in Methanol-to-Olefin Process Wastewater Treatment (pages 504–510)

      Wen-Jie Lv, Qiang Yang, Liang Ma, Hong-Lai Liu and Hua-Lin Wang

      Article first published online: 9 FEB 2015 | DOI: 10.1002/ceat.201400272

      Thumbnail image of graphical abstract

      Methanol-to-olefins (MTO) is the most successful commercial technology of coal chemical industry but the problem of quench water combined with various fine catalyst particles limits the long-period operation of the MTO unit. A minihydrocyclone separation technology and parallel configuration are proposed, providing a simple and powerful guide in design and optimization of MTO units.

    16. Modeling of Mass Transfer in an Internal Loop Airlift Reactor (pages 511–520)

      Lijia Luo and Jingqi Yuan

      Article first published online: 5 FEB 2015 | DOI: 10.1002/ceat.201300450

      Thumbnail image of graphical abstract

      Advantages of an airlift reactor lie in its simple construction, low energy consumption, low shear stress, and high mass transfer efficiency. A complete mass transfer model was established for an internal loop airlift reactor considering all sections of the reactor. In order to solve the partial differential equations of the mass transfer model, a numerical method was developed.

    17. Variable Cascade Control Structure for Tubular Reactors (pages 521–529)

      Galo R. Urrea-García, Sergio Reséndiz-Camacho, José Álvarez-Ramírez and Guadalupe Luna-Solano

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201300518

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      A variable control structure is proposed that is able to adapt to variations of the temperature error along a tubular reactor. Controllers can be designed from simple input-output first-order models. Simulation results show that the variable structure enhances the performance and robustness properties of conventional cascade schemes.

    18. Generalized Pinch Analysis Scheme Using MATLAB (pages 530–536)

      Kshitij Tewari, Sumit Agrawal and Raj Kumar Arya

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201400475

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      In real-scale industrial problems, the calculations for pinch analysis can become tedious and time-consuming. Commercially available specialized simulation packages for pinch point analysis are very costly. A generalized low-cost and user-friendly MATLAB pinch analysis scheme using the temperature interval method is proposed and tested in several problems for accuracy and robustness.

    19. Knowledge-Based Conceptual Synthesis of Industrial-Scale Downstream Processes for Biochemical Products (pages 537–546)

      Karin Backhaus, Mirka Lochmüller, Markus Christian Arndt, Ole Riechert and Gerhard Schembecker

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201400111

      Thumbnail image of graphical abstract

      For the economic success of industrial biochemical products, a rigorous capture and evaluation of the available downstream processing options is an exigency. A generic process design workflow and assisting mathematical methods are presented. They are based on heuristic knowledge and accelerate the generation of alternative downstream routes.

  7. Communication

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Highlights
    7. Research Articles
    8. Communication
    9. Overview
    1. Treating Methanol-to-Olefin Quench Water by Minihydrocyclone Clarification and Steam Stripper Purification (pages 547–552)

      Qiang Yang, Wen-jie Lv, Lei Shi and Hua-lin Wang

      Article first published online: 8 JAN 2015 | DOI: 10.1002/ceat.201400429

      Thumbnail image of graphical abstract

      The methanol-to-olefin (MTO) process is a still developing technology for producing ethylene and propylene from naphtha thermal cracking. Recovering MTO quench water by minihydrocyclone and steam stripping treatment is applied in industrial plants. The method and equipment for this system increase the economic efficiency of the MTO device and are applicable to other water treatment systems.

  8. Overview

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Highlights
    7. Research Articles
    8. Communication
    9. Overview
    1. You have free access to this content
      Overview Contents: Chemie Ingenieur Technik 3/2015 (page 555)

      Article first published online: 24 FEB 2015 | DOI: 10.1002/ceat.201590011

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