Chemical Engineering Research Bulletin 

About: Chemical Engineering Research Bulletin is an academic journal. The journal publishes majorly in the area(s): Aqueous solution & Boundary layer. It has an ISSN identifier of 0379-7678. It is also open access. Over the lifetime, 92 publications have been published receiving 908 citations.

Removal of methyl red from aqueous solution by activated carbon prepared from the Annona squmosa seed by adsorption

Abstract: The use of low-cost, locally available, highly efficiencient and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater This study investigates the potential use of activated carbon prepared from the Annona squmosa seed for the removal of methyl red (MR) dye from simulated wastewater The effects of different system variables, adsorbent dosage, initial dye concentration, pH and contact time were investigated and optimal experimental conditions were ascertained The results showed that as the amount of the adsorbent increased, the percentage of dye removal increased accordingly Optimum pH value for dye adsorption was 70 Maximum dye was sequestered within 50 min of the start of every experiment The adsorption of methylene blue followed the pseudo-second –order rate equation and fits the Langmuir, Freundlich, Dubinin-Radushekevich (D-R) and Tempkin equations well The maximum removal of MR was obtained at pH 7 as 8281% for adsorbent dose of 02 g/ 50 mL and 25 mg L -1 initial dye concentration at room temperature Furthermore, adsorption kinetics of MR was studied and the rate of adsorption was found to conform to pseudo-second –order kinetics with a good correlation (R 2 > 099) with intraparticle diffusion as one of the rate determining steps Activated carbon developed from the Annona squmosa seed can be an attractive option for dye removal from diluted industrial effluents since test reaction made on simulated dyeing wastewater showed better removal percentage of MR Keywords: Annona squmosa, Adsorption, Wastewater, Methyl red, Kinetics, Activated carbon DOI = 103329/cerbv14i13767 Chemical Engineering Research Bulletin 14 (2010) 11-18

A Review of Rare Earth Mineral Processing Technology

Abstract: The recent technological advancement has made the rare earth elements (REEs) more significant and they in turn have facilitated the culmination of more new technological applications owing to their unique physical and chemical properties. In this regard, renewable energy applications such as wind turbine and hybrid cars testify to the increasing demands on permanent magnet in the future. Considering such increasing demands on REEs, it is felt necessary to identify alternative producers of REEs outside of China as one of the measures to create a fair competition and control the price on the market. It is worth highlighting that the separation of rare earth can be both complex and challenging owing to similar properties which are shared by them. The purpose of this paper is to comprehensively review and summarize the rare earth processing routes, the mostly employed rare earth separation methods, supply and demand of rare earth around the world and some possible scenarios in rare earth market. This review has critically looked into a few authors‘ recent reviews on six major processes of rare earth processing steps and each step is considered as important to produce both high quality and better quantity of REEs. Chemical Engineering Research Bulletin 19(2017) 20-35

The influence of nickel loading on reducibility of NiO/Al 2 O 3 catalysts synthesized by sol-gel method

Abstract: The sol-gel method was used to synthesize nickel-alumina catalysts with various nickel loadings. Chemical and physical properties of support and supported nickel were characterized by TGA, DTA, EDX, SEM, BET, XRD and TPR techniques. Calcination temperature (500°C) was determined by performing thermogravimetric and differential thermal analysis on the samples. Energy dispersive X-ray (EDX) was used to determine the actual content of nickel on alumina. N 2 adsorption test revealed that the specific surface area varied between 550 and 223 m 2 /g for pure alumina and 30%Ni/Al, respectively. X-ray diffraction patterns showed no peaks due to NiO species and NiO species were well dispersed on the support by formation of NiAl 2 O 4 phase. Temperature-programmed reduction (TPR) indicated that the nickel species mainly presented in NiAl 2 O 4 phase and small amount of NiO. In the 20 percent nickel loading, the surface NiAl 2 O 4 phase, which is between NiO and bulk NiAl 2 O 4 phases in terms reducibility, was formed considering as a successful result. Keywords: Nickel-alumina catalysts; sol-gel method; thermogravimetric analysis; dispersion of NiO; reducibility DOI = 10.3329/cerb.v14i2.5052 Chemical Engineering Research Bulletin 14 (2010) 97-102

Effects of heat source/sink on MHD flow and heat transfer over a shrinking sheet with mass suction

Abstract: An analysis is made to study the effects heat source/sink on the steady two dimensional MHD boundary layer flow and heat transfer past a shrinking sheet with wall mass suction. In the dynamic system, a uniform magnetic field acts normal to the plane of flow. The governing partial differential equations are transformed into self-similar ordinary differential equations using similarity transformations. Then the obtained self-similar equations are solved by finite difference method using quasilinearization technique. From the analysis it is found that the velocity inside the boundary layer enhances with increase of wall suction and magnetic field and accordingly the thickness of the momentum boundary layer decreases. The temperature decreases with Hartmann number, Prandtl number and heat sink parameter and the temperature increases with heat source parameter. Furthermore, for strong heat source heat absorption at the sheet occurs. Key words: MHD boundary layer, heat transfer, shrinking sheet, heat source/sink, suction. DOI: http://dx.doi.org/10.3329/cerb.v15i1.6524 Chemical Engineering Research Bulletin 15 (2011) 12-17

Excess methanol recovery in biodiesel production process using a distillation column: a simulation study

Abstract: This paper presents an ASPEN PLUS TM simulation study for excess methanol recovery in continuous biodiesel production process using a distillation column. The feedstock used for biodiesel production was Triolein containing 15% free fatty acid (Oleic Acid). The special attention was devoted to the effect of different alcohol to oil ratio and important design and operating parameters of distillation column on excess methanol recovery from the product. The energy consumption is represented by reboiler heat duty of distillation column. Analysis of simulation results shows that for a certain distillation operating condition and reaction parameters it is possible to recover around 95-98% of excess methanol before phase separation of biodiesel and glycerol, although for high alcohol to oil ratio the energy requirement increases exponentially. DOI: 10.3329/cerb.v13i2.3538 Chemical Engineering Research Bulletin 13 (2009) 55-60