The Current Opinion journals were developed out of the recognition that it is increasingly difficult for specialists to keep up to date with the expanding volume of information published in their subject. Elsevier’s Current Opinion journals comprise of 26 leading titles in life sciences and adjacent fields.

Current Opinion in Chemical Engineering

5-Year Impact Factor: 3.933
Issues per year: 4 issues
Editorial Board

Current Opinion in Chemical Engineering

Current Opinion in Chemical Engineering is devoted to bringing forth short and focused review articles written by experts on current advances in different areas of chemical engineering. Only invited review articles will be published.

The goals of each review article in Current Opinion in Chemical Engineering are:
1. To acquaint the reader/researcher with the most important recent papers in the given topic.
2. To provide the reader with the views/opinions of the expert in each topic.

The reviews are short (about 2500 words or 5-10 printed pages with figures) and serve as an invaluable source of information for researchers, teachers, professionals and students. The reviews also aim to stimulate exchange of ideas among experts.

Themed sections:
Each review will focus on particular aspects of one of the following themed sections of chemical engineering:
1. Nanotechnology
2. Energy and environmental engineering
3. Biotechnology and bioprocess engineering
4. Biological engineering (covering tissue engineering, regenerative medicine, drug delivery)
5. Separation engineering (covering membrane technologies, adsorbents, desalination, distillation etc.)
6. Materials engineering (covering biomaterials, inorganic especially ceramic materials, nanostructured materials).
7. Process systems engineering
8. Reaction engineering and catalysis.

Selection of the topics to be reviewed:
Section Editors of each themed section are authorities in the field and are selected by the Editors of the journal. They divide their section into a number of topics ensuring that the field is comprehensively covered and that all issues of current importance are emphasized. Section Editors commission reviews from authorities on each topic that they have selected. Each issue of the journal will focus on two themed sections. There will be four issues of the journal per year covering each themed section once per year.

Authors write short review articles in which they present most recent developments in their subject, emphasizing the aspects that, in their opinion, are most important. In addition, they provide short annotations to the papers that they consider to be most interesting from all those published in their topic over the previous three to four years. The review articles undergo internal review by the Section Editors, Editorial Board members and the Editors.

Editorial Overview:
Section Editors write a short overview at the beginning of the section to introduce the reviews and to draw the reader's attention to any particularly interesting developments.

Best Cited over the last year.

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Electrochemical conversion of CO2to useful chemicals: Current status, remaining challenges, and future opportunities

The rise of atmospheric CO 2 levels must be slowed, or better reverted, to avoid further undesirable climate change. Electrochemical reduction of CO 2 into value-added chemicals using renewable energy is one approach to help address this problem as it will recycle 'spent' CO 2 (carbon neutral cycle) and it provides a method to store or utilize otherwise wasted excess renewable energy from intermittent sources, both reducing our dependence on fossil fuels. Current electrolysis cells accomplish…

Volume 2, Issue 2, 01 May 2013, Pp 191-199
Huei Ru Molly Jhong | Sichao Ma | Paul Ja Kenis

Forty years of Heat Integration: Pinch Analysis (PA) and Mathematical Programming (MP)

Process Integration (PI) supporting Process Design, Integration, and Optimisation has been around from the early 1970s. PI was developed originally from Heat Integration, which remains the cornerstone for PI continuous advance. It has been closely related to the development of Chemical, Mechanical and Power Engineering supported by the extended implementation of mathematical modelling, simulation and optimisation, and by the application of information technology. Its development has accelerated…

Volume 2, Issue 4, 01 January 2013, Pp 461-474
Jiří Jaromír Klemeš | Zdravko Kravanja

Stimuli responsive self-folding using thin polymer films

The ability to manipulate the curvature of thin films in response to a specific stimulus such as light, heat, pH, electric fields or chemicals can be utilized to create a variety of smart three dimensional (3D) materials. Because of the high structural and chemical variability of polymers that can be created by synthetic approaches, thin films composed of polymers are especially useful in creating a wide range of stimuli-responsive structures. Moreover, since polymer thin films can be patterned…

Volume 2, Issue 1, 01 February 2013, Pp 112-119
David H. Gracias

Catalysis on faceted noble-metal nanocrystals: Both shape and size matter

Experimental studies with single-crystal surfaces and computational simulations have long established that the activity and selectivity of a heterogeneous catalyst for a structure-sensitive reaction can be maximized by controlling the arrangement of atoms on the surface. The essence of these studies, however, could not be materialized until very recently when it became possible to generate faceted nanocryst als with controlled shapes and sizes, including those with high-index facets. In…

Volume 2, Issue 2, 01 May 2013, Pp 142-150
Shuifen Xie | Sang Il Choi | Xiaohu Xia | Younan Xia

Recent advances in preparation and morphology control of polymeric membranes formed by nonsolvent induced phase separation

Nonsolvent induced phase separation (NIPS) is the most widely used method to prepare membranes for separation processes. Even though it has been used for about five decades, NIPS still attracts much attention nowadays. In the present article, we first discuss some recent advances in the fundamentals of NIPS, including the mechanism of membrane formation and the selection of polymer, solvent, and nonsolvent. We will also review the recent researches about modification of membranes by blending…

Volume 2, Issue 2, 01 May 2013, Pp 229-237
Da Ming Wang | Juin Yih Lai

Nanocrystal photovoltaics: A review of recent progress

Crystalline inorganic light-absorbing photovoltaic (PV) device layers can be deposited from solution using semiconductor nanocrystal inks to alleviate the problems due to high-temperature and vacuum processing. Inks can be formulated using various semiconductor nanocrystals, so that it is possible to tune band gap energy and target specific compositions of the absorber layers. Nanocrystal PV devices have exhibited efficiencies of up to 7%, and higher efficiencies of 12% have been achieved by…

Volume 2, Issue 2, 01 May 2013, Pp 160-167
C. Jackson Stolle | Taylor B. Harvey | Brian A. Korgel

Life Cycle Assessment: A review of the methodology and its application to sustainability

Life Cycle Assessment (LCA) is an analytical tool that captures the overall environmental impacts of a product, process or human activity from raw material acquisition, through production and use, to waste management. This comprehensive view makes LCA unique in the suite of environmental management tools. As found in all complex assessment tools, LCA has its limitations as well as its strengths. Although the International Standardization Organization (ISO) provides a general framework for…

Volume 2, Issue 3, 01 January 2013, Pp 273-277
Mary Ann Curran

Advances in ZnO-based materials for light emitting diodes

ZnO and related semiconductors are alternatives to GaN-based compounds for fabrication of UV/blue light emitting diodes (LEDs). Progress in development of ZnO LEDs has been disappointing due to the difficulty of achieving robust p-type doping and the low crystal quality of heterojunctions and quantum wells. We critically review reports of p-type doping using group V impurities and summarize recent progress and prospects for further advancement of ZnO-based light emitters. © 2013 Elsevier Ltd.…

Volume 3, Issue , 01 February 2014, Pp 51-55
S. J. Pearton | F. Ren

Recent developments in thin film (nano)composite membranes for solvent resistant nanofiltration

© 2015 Elsevier Ltd. All rights reserved. By separating organic mixtures at a molecular level, solvent resistant nanofiltration is offering a sustainable and reliable solution to many separation challenges in modern process industry. As solvent permeance is usually inversely proportional to the thickness of the selective layer, so-called thin film composite membranes offer great potential. They consist of a thin polymeric top-layer on a support which is generally prepared from another type of…

Volume 8, Issue , 01 January 2015, Pp 45-54
Sanne Hermans | Hanne Mariën | Cedric Van Goethem | Ivo Fj Vankelecom

High capacity lithium ion battery anodes of silicon and germanium

Lithium ion batteries with significantly higher energy and power density desired for new personal electronic devices, electric vehicles, and large-scale energy storage, require new materials. This review focuses on the replacement of the graphite anode with silicon or germanium. Si and Ge both have significantly higher Li storage capacities than graphite, but also undergo significant volumetric expansion and contraction during lithiation and delithiation. Si and Ge nanomaterials can tolerate…

Volume 2, Issue 3, 01 January 2013, Pp 286-293
Timothy D. Bogart | Aaron M. Chockla | Brian A. Korgel

Pervaporation as a tool in chemical engineering: A new era?

Most applications of pervaporation today are in solvent dehydration. This is about to change, considering the new trends in membrane development and the needs in chemical engineering. This paper identifies three areas in which pervaporation can become a breakthrough technology, if the right direction in development is chosen: organophilic separation, membrane reactors and bioethanol upgrading. The most attention is paid to the development of more selective membranes. Even though such membranes…

Volume 4, Issue , 01 May 2014, Pp 47-53
Bart Van Der Bruggen | Patricia Luis

Sustainable design and synthesis of energy systems

© 2015 Elsevier Ltd. All rights reserved. This paper provides an overview of sustainable design and synthesis of energy systems. We review recent progress and present major research challenges of the superstructure optimization based approach in terms of: (1) systematic generation of comprehensive process superstructures; (2) building optimization models that integrate techno-economic assessment with life cycle sustainability analysis while addressing uncertainty issues; (3) efficient…

Volume 10, Issue , 01 November 2015, Pp 77-86
Jian Gong | Fengqi You

Gas-liquid membrane contactors for acid gas removal: Recent advances and future challenges

Gas-liquid membrane contactor, which integrates the absorption process with membranes, is an emerging membrane technology that is of particular interest to acid gas absorption. This article presents a short review on the recent development of membrane contactor technology. With the analysis of key challenges being addressed for membrane contactor development, the state-of-the-art of highly hydrophobic microporous membranes, novel liquid absorbents and membrane module design and process…

Volume 2, Issue 2, 01 May 2013, Pp 255-262
Yuan Zhang | Rong Wang

Recent progress in polycrystalline zeolite membrane research

Zeolite membranes possess a highly defined microporous structure which is capable of very unique separation principally based around molecular size exclusion, adsorption, and diffusion. Polycrystalline membranes of different zeolites have been prepared in the laboratory. These zeolite membranes show excellent separation performance for mixture with a strongly adsorbing component. These unique properties have let to industrial application of zeolite membranes for pervaporation separation of…

Volume 2, Issue 2, 01 May 2013, Pp 209-216
Ys Lin | Mikel C. Duke

Microfluidics for advanced drug delivery systems

©2015 Elsevier Ltd. All rights reserved. Considerable efforts have been devoted toward developing effective drug delivery methods. Microfluidic systems, with their capability for precise handling and transport of small liquid quantities, have emerged as a promising platform for designing advanced drug delivery systems. Thus, microfluidic systems have been increasingly used for fabrication of drug carriers or direct drug delivery to a targeted tissue. In this review, the recent advances in these…

Volume 7, Issue , 01 January 2015, Pp 101-112
Reza Riahi | Ali Tamayol | Seyed Ali Mousavi Shaegh | Amir M. Ghaemmaghami | Mehmet R. Dokmeci | Ali Khademshosseini

Recent progress in artificial photosynthesis: CO2 photoreduction to valuable chemicals in a heterogeneous system

Multiple-hole oxidation process is the bottleneck for solar fuel synthesis. Formation of higher carbon chain is usually very difficult caused by weakly bonded CO. A new strategy couples the photoreduction of CO 2 with water photolysis. Junction photocatalyst system performs much better than single materials. Solid-state mediator is proven effective as alternative liquid mediators. © 2012 Elsevier Ltd © 2013 Elsevier Ltd.

Volume 2, Issue 2, 01 May 2013, Pp 200-206
Albertus D. Handoko | Kimfung Li | Junwang Tang

Transformation of biomass via the selective hydrogenolysis of CO bonds by nanoscale metal catalysts

Selective hydrogenolysis of CO bonds is a key transformation in the depolymerization of biomass and deoxygenated biomass-derived platform compounds for the production of renewable chemical feedstocks and fuels. Recently, many highly efficient homogeneous and heterogeneous catalysts have been developed for these reactions and herein we highlight the use of dispersed and immobilized nanoscale metal catalysts for the hydrogenolysis of CO bonds. Bifunctional systems comprising a nanoscale metal…

Volume 2, Issue 2, 01 May 2013, Pp 178-183
Ning Yan | Paul J. Dyson

Intelligent nanoparticles for advanced drug delivery in cancer treatment

©2015 Elsevier Ltd. All rights reserved. Treatment of cancer using nanoparticle-based approaches relies on the rational design of carriers with respect to size, charge, and surface properties. Polymer-based nanomaterials, inorganic materials such as gold, iron oxide, and silica as well as carbon based materials such as carbon nanotubes and graphene are being explored extensively for cancer therapy. The challenges associated with the delivery of these nanoparticles depend greatly on the type of…

Volume 7, Issue , 01 January 2015, Pp 84-92
David S. Spencer | Amey S. Puranik | Nicholas A. Peppas

Extended P-graph applications in supply chain and Process Network Synthesis

The fast development of new products, process technologies and production methods has made the decision making in process design and synthesis a complicated task. Combination of all feasible process pathways and solutions creates a huge super structure. Thus, to determine the optimum solution and flexible alternative solution is a big challenge for Process Network Synthesis (PNS). Process graph (P-graph) approach has been extended gradually to provide a friendly and fast optimum result for PNS…

Volume 2, Issue 4, 01 January 2013, Pp 475-486
Hon Loong Lam

Supramolecular nanostructures as drug carriers

© 2014 Elsevier Ltd. Supramolecular nanostructures are well-defined nanoscale objects that are constructed by self-assembly of rationally designed or naturally occurring molecular building units. These non-covalently linked assemblies carry some advantageous features such as dynamic and stimulus-responsive structures for interfacing with biological systems and particularly for use as drug carriers. In this brief review, we examine several recent examples on the use of discrete supramolecular…

Volume 7, Issue , 01 January 2015, Pp 75-83
Ran Lin | Honggang Cui

Thin film solar cells from sintered nanocrystals

Formation of semiconductor thin films from nanocrystal (NC) inks is emerging as a very important technology for thin film photovoltaics. It enables routes to low-cost solar cells via high-throughput and low-capital cost manufacturing techniques based on simple coating or printing methods. Most approaches can be categorized by whether the nanocrystals are to be left intact or are to be sintered into a polycrystalline film. The sintering approach has yielded much higher solar cell performance.…

Volume 2, Issue 2, 01 May 2013, Pp 168-177
Cori N. Bucherl | Karl R. Oleson | Hugh W. Hillhouse

Structured catalysts for non-adiabatic applications

Although a number of advantages of structured catalysts over randomly packed catalyst pellets have been well known for many years, there is now growing interest in their potential for engineering the heat management in strongly exothermic or endothermic catalytic processes, primarily via an efficient heat conductive mechanism in their thermally connected structure. Herein we review the recent literature in this emerging field, addressing first conductive honeycomb monolith catalysts, and then…

Volume 5, Issue , 01 January 2014, Pp 55-67
Enrico Tronconi | Gianpiero Groppi | Carlo Giorgio Visconti

Identifying optimal active sites for heterogeneous catalysis by metal alloys based on molecular descriptors and electronic structure engineering

Broadly speaking, bottom-up catalyst design is based on detailed understanding of the molecular transformations that govern catalytic processes and controlling these transformations through targeted synthesis of optimal catalysts. In this document, we highlight recent progress in this area and comment on how it might affect the future of catalyst discovery. We mainly focus on the design of optimal active sites for metal alloy catalysts. Rather than focusing on listing relevant examples and…

Volume 2, Issue 3, 01 January 2013, Pp 312-319
Adam Holewinski | Hongliang Xin | Eranda Nikolla | Suljo Linic

High performance polymer membranes for CO2separation

Membrane technology for gas separation applications was commercialized about three decades ago for natural gas upgrading and nitrogen blanketing purposes, in particular, using a limited number of polymer materials such as polysulfone, cellulose acetate, and polyimide. There are still many opportunities for the development of new polymer membrane materials for gas separation applications as the separation performance of existing membrane materials should be improved. In this review, we introduce…

Volume 2, Issue 2, 01 May 2013, Pp 238-244
Seungju Kim | Young Moo Lee

Engineering clostridia for butanol production from biorenewable resources: From cells to process integration

© 2014 Elsevier Ltd. All rights reserved. Renewable feedstocks such as lignocellulosic biomass, CO 2 and syngas are readily available and low cost but difficult to ferment. There are microbes that can utilize cellulose or gases to produce ethanol and organic acids as major products, but few can produce n-butanol in a significant amount. Metabolic engineering can be applied to both cellulolytic and acetogenic clostridia to produce n-butanol directly from cellulose and CO 2 . In addition,…

Volume 6, Issue , 01 January 2014, Pp 43-54
Jufang Wang | Xiaorui Yang | Chih Chin Chen | Shang Tian Yang