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FOCUS
Bulkflow heat exchanger provides
consistent cooling
This article describes a solution mining facility that installed a Bulkflow heat exchanger a little over a year ago to produce table salt. Besides salt, the
Bulkflow heat exchanger has been successfully applied to chemicals, fertilisers, polymers, detergents,
catalysts, minerals, oilseeds, grains, food products, sugar and biosolids. ...
- Andy Nix
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CASE STUDY
Generating high-pressure steam in boiler from biomass
LANXESS India Private Limited has embarked on a unique
green initiative to shift to eco-friendly fuel to generate
high-pressure steam by using briquettes produced from
renewable energy source - biomass. ...
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PROCESS
Effect of a rod promoter on velocity in a square gas-solid fluidized bed
Gas-solid fluidized bed is characterized by the formation of bubbles, channels and slugs. The expansion beyond the point of incipient fluidization is primarily due to the gas bubbles. Experiments were carried out extensively to study the effectiveness of rod promoter in reducing bed fluctuation in gas-solid fluidized bed. The correlations for the bed
fluctuation ratio and the bed expansion ratio were developed for the un-promoted rod promoted squared bed. The calculated values of bed expansion ratio and the bed fluctuation ratio by the developed correlations agree fairly well their respective experimental values. The effect of a rod promoter on minimum fluidization velocity in a square gas-solid fluidized bed has been studied. ....
- Basanta K Sahu, Saroj K Padhi, R K Singh and G K Roy
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TECHNOLOGY
Enhanced power generation in microbial based biological fuel cell using methylene blue as an electronophore
Microbial fuel cells (MFCs) are special types of biofuel cells, producing electric power by employing microorganisms instead of isolated enzymes, to assist redox reactions. In this work, methylene blue (MB) was utilized as an electron mediator in microbial fuel cell (MFC) consuming glucose to study both its efficiency during electricity generation and its role in growth and metabolism of Klebsiella pneumoniae. In this study, the variation of open circuit potential (OCP), biomass growth curve, current density and power density with time
was recorded. It is proved that the addition of mediator will enhance the power output and the role of electronophore (ie) methylene blue on the performance of MFCs in generating electric current was investigated. ...
- M Vijay and R M Meyyappan |
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RESEARCH
Salt effect on the enthalpy of mixing of methanol + ethyl acetate at 303.15 K
The effect of the dissolved salts, namely NaCl, CaCl2, ZnCl2, CdCl2 and NH4Cl on the endothermic enthalpy of mixing of the binary system methanol + ethyl acetate has been investigated at 303.15 K in an isothermal batch calorimeter with vapour space. The salt NaCl and NH4Cl decrease the endothermic value. A shift in peak towards higher mole fraction of methanol is noticed on addition of 5% ZnCl2 and
CdCl2. The experimental values of the enthalpy of mixing were fitted into a modified Redlich - Kister equation and deviations and parameters are reported. ...
- R Tamilarasan, M Dharmendirakumar and M Raajenthiren |
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