An exergy calculator tool for process simulationAsia-Pacific Journal of Chemical Engineering - Tập 2 Số 5 - Trang 431-437 - 2007
Juan M Montelongo-Luna, William Y. Svrcek, Brent R. Young
AbstractThe constant tightening of environmental regulations and the ongoing
need to reduce operating costs have posed a challenge for the design of any
chemical process. Process engineers use process simulators to help them perform
calculations that will, ultimately, result in design parameters or operating
conditions for a plant or process. Exergy is a potential indicator that can aid
in the des... hiện toàn bộ
Supported ionic liquids as green catalyst for 2‐butanol synthesis from transesterification of sec‐butyl acetateAsia-Pacific Journal of Chemical Engineering - Tập 11 Số 6 - Trang 901-909 - 2016
Jinbei Yang, Ting Zeng, Dongren Cai, Ling Li, Wenli Tang, Ruoyu Hong, Ting Qiu
AbstractTwo supported ionic liquids using molecular sieve SBA‐15 as supporter
were prepared and employed as efficient catalysts for the synthesis of 2‐butanol
(SBOH) via the transesterification of sec‐butyl acetate and methanol (MeOH).
[SBA‐15‐Ps‐im]HSO4 performed better in the catalytic activity and was chosen for
further studying the influence of experimental conditions. The effects of
various p... hiện toàn bộ
Ethanol‐tolerant Pt‐alloy cathodes for direct ethanol fuel cell (DEFC) applicationsAsia-Pacific Journal of Chemical Engineering - Tập 4 Số 1 - Trang 17-24 - 2009
F.J. Rodríguez‐Varela, O. Savadogo
AbstractThe electroactivity of Pt1Co1(a/o)/C and Pt3Cr1(a/o)/C for the oxygen
reduction reaction (ORR) in ethanol‐containing medium was studied. It was found
that these cathodes present a high tolerance to this alcohol. The onset
potential of the ORR decreased at 14 and 12 mV in the presence of 0.5 M ethanol
on Pt1Co1/C and Pt3Cr1/C, respectively. The tolerance of the Pt alloys is one
order of mag... hiện toàn bộ
CFD modeling of rotary cement kilnsAsia-Pacific Journal of Chemical Engineering - Tập 3 Số 2 - Trang 106-118 - 2008
Kaustubh S. Mujumdar, Vivek V. Ranade
AbstractRotary cement kilns are widely used to convert calcineous raw meal into
cement clinker, and are key components in the cement industry. In this article,
we report a comprehensive computational fluid dynamics (CFD)‐based model to
capture key transport processes in rotary cement kilns. Separate but coupled
computational models were developed for the bed and the freeboard regions of the
rotary... hiện toàn bộ
Design and optimization of isolated energy systems through pinch analysisAsia-Pacific Journal of Chemical Engineering - Tập 6 Số 3 - Trang 518-526 - 2011
Santanu Bandyopadhyay
AbstractIsolated energy systems seem to be a promising option for electrifying
remote locations where grid extension is not feasible or economical. Integration
of battery bank as means of energy storage with different renewable energy
systems can enhance the system reliability and its overall performance.
Therefore, appropriate choices of generator sizes and the battery bank capacity
are critical ... hiện toàn bộ
Ammonium ion removal using activated zeolite and chitosanAsia-Pacific Journal of Chemical Engineering - Tập 15 Số 3 - 2020
Nurliyana Nasuha Safie, Abu Zahrim Yaser, Nidal Hilal
AbstractStudies have previously been done on efficacies of chitosan and zeolite
in ammonium ion (NH4+) removal. However, no study compares the adsorption
performance of natural zeolite (NZ) and activated NZ (ANZ) with high molecular
weight chitosan (HMWC) and low molecular weight chitosan (LMWC). Hence, this
study investigates the potentials of NZ, ANZ, LMWC, and HMWC in NH4+ removal.
The characte... hiện toàn bộ
Discussion of shale rock wettability and the methods to determine itAsia-Pacific Journal of Chemical Engineering - Tập 13 Số 6 - 2018
James J. Sheng
AbstractBecause of ultra‐low permeability of shale rocks, capillary pressure is
very high. Wettability not only determines the value of capillary pressure, but,
more importantly, it also determines whether the capillary pressure is a driving
force or a resistance to fluid flow. This paper is to address the wettability
characteristics of shale rocks. First, the common methods to determine
wettabili... hiện toàn bộ
The energy challenge of direct contact membrane distillation in low temperature concentrationAsia-Pacific Journal of Chemical Engineering - Tập 2 Số 5 - Trang 400-406 - 2007
V.A. Bui, Minh H. Nguyen, J.‐F. Müller
AbstractDirect contact membrane distillation (DCMD) was operated at low
temperatures from 25 to 40 °C to suit the purpose of thermally concentrating
sensitive liquid foods, especially fruit juices to high solid content
concentrate with most of the quality attributes preserved.A lab scale DCMD unit
has been set up at the Centre for Plant and Food Science, University of Western
Sydney. Hollow fibre ... hiện toàn bộ
Carbon dioxide adsorption by modified carbon nanotubesAsia-Pacific Journal of Chemical Engineering - Tập 10 Số 6 - Trang 885-892 - 2015
Narges Omidfar, Ali Mohamadalizadeh, Seyed Hamed Mousavi
AbstractIn 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 highest CO2
uptake of 65.2 mg CO2 adsorbed per g adsorbent. One of the MWCNTs were modified
with urea (CH4N2O) un... hiện toàn bộ
Simultaneous heat integration and the synthesis of biogas processes from animal wasteAsia-Pacific Journal of Chemical Engineering - Tập 6 Số 5 - Trang 734-749 - 2011
Rozalija Drobež, Zorka Novak Pintarič, Bojan Pahor, Zdravko Kravanja
AbstractThe objective of this work was to perform simultaneous heat integration
and the synthesis of biogas process based on the mixed‐integer nonlinear
programming (MINLP) model. A synthesis model recently developed by Drobež et al.
[R. Drobež, Z. Novak Pintarič, B. Pahor, Z. Kravanja. Chem. Biochem. Eng. Q,
2009; 23, 445–459] has been upgraded for simultaneous heat integration. An
industrial cas... hiện toàn bộ