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Showing papers in "Chemical Engineering & Technology in 2020"




Journal ArticleDOI
TL;DR: Challenges in modeling due to specific assumptions and limitations will be highlighted to provide a useful basis for researchers and end-users for further process modeling of biomass gasification in Aspen Plus.
Abstract: Aspen Plus has become one of the most common process simulation tools for both academia and industrial applications In the last decade, the number of the papers on Aspen Plus modeling of biomass gasification has significantly increased This review focuses on recent developments and studies on modeling biomass gasification in Aspen Plus including key aspects such as tar formation and model validation Accordingly, challenges in modeling due to specific assumptions and limitations will be highlighted to provide a useful basis for researchers and end-users for further process modeling of biomass gasification in Aspen Plus

59 citations









Journal ArticleDOI
TL;DR: In this paper, the influence of Ni-based catalysts on the ESR process has been discussed, and different promoters and supports were utilized to enhance the hydrogen yield and the catalyst stability.
Abstract: Ethanol steam reforming (ESR) is one of the potential processes to convert ethanol into valuable products. Hydrogen produced from ESR is considered as green energy for the future and can be an excellent alternative to fossil fuels with the aim of mitigating the greenhouse gas effect. The ESR process has been well studied, using transition metals as catalysts coupled with both acidic and basic oxides as supports. Among various reported transition metals, Ni is an inexpensive material with activity comparable to that of noble metals, showing promising ethanol conversion and hydrogen yields. Additionally, different promoters and supports were utilized to enhance the hydrogen yield and the catalyst stability. This review summarizes and discusses the influences of the supports and promoters of Ni-based catalysts on the ESR process.

Journal ArticleDOI
TL;DR: In this article, a forward osmosis (FO) using aquaporins (AQP)based biomimetic membranes and optimizing the chromium rejection through response surface methodology (RSM) were presented.
Abstract: Due to the lack of affordable and feasible wastewater treatment technologies, various industries in developing countries are discharging chromium (Cr) without meeting the environmental standards. Here, the aim was to employ forward osmosis (FO) using aquaporins (AQP)‐based biomimetic membranes and optimize the Cr rejection through response surface methodology (RSM). The initial concentration of draw solution, feed solution, and time was selected as independent variables in order to optimize Cr rejection and water flux. A high Cr rejection efficiency and water flux were achieved under the optimal conditions. These results revealed that the FO process applying an AQP membrane beside the RSM could be considered to treat wastewaters containing heavy metals.














Journal ArticleDOI
TL;DR: In this paper, a review summarizes recent developments in bimetallic catalysts in DRM which focused on the evaluation of catalysts, deactivation studies, and reaction mechanisms of developed bimetal catalysts.
Abstract: Catalytic dry reforming of methane (DRM) is a promising way for renewable syngas production due to the utilization of both CO2 and CH4 greenhouse gases. Current approaches were made to improve the catalytic activity and coke resistance by introducing a second metal into the Ni-based catalytic system. This bimetallic catalytic system showed a significant improvement in coke resistance due to the synergistic effect of both metals towards the reaction. This review summarizes recent developments in bimetallic catalysts in DRM which focused on the evaluation of catalysts, deactivation studies, and reaction mechanisms of developed bimetallic catalysts.



Journal ArticleDOI
TL;DR: A review of recent studies on the performances of MFC-MBR systems, regarding the design and configuration of the integrated system, irrespective of whether optimization was done or not in the operating system is given in this article.
Abstract: Membrane bioreactors (MBR) have gained much attention due to their ability to achieve higher treatment efficiency However, high external energy consumption in aeration for membrane fouling mitigation has been limiting their application Microbial fuel cells (MFC) can ideally extract energy from wastewater in the form of electricity and reduce membrane fouling Thus, the use of MFC-MBR is rapidly expanding However, the MFC-MBR design and operation is not fully mature and further research is needed to optimize the process efficiency and enhance the applicability This review gives an overview of recent studies on the performances of MFC-MBR systems, regarding the design and configuration of the integrated system, irrespective of whether optimization was done or not in the operating system