Chemical Engineering

Model of turbulence penetration into a suspension layer on a sediment bed and effect on vertical solute transfer

submitted by pfliig1r 2 days ago

The vertical diffusional mass (solute) transfer through a suspended sediment layer, e.g. at the bottom of a lake, reservoir or estuary, by the propagation of velocity fluctuations from above was in...

1 dig(s)

Evaluation of Reynolds stress, k-ε and RNG k-ε turbulence models in street canyon flows using various experimental datasets

submitted by midenoj 2 days ago

In this study the Reynolds-averaged Navier-Stokes computational fluid dynamics methodology is used, which has proved to be a powerful tool for the simulations of the airflow and pollutant dispersio...

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Characteristics of surface layer turbulence in coastal area of Qatar

submitted by BridgeFra 2 days ago

A characterization of the atmospheric surface layer in coastal region of Qatar is presented in the present paper. The micrometeorological data is collected in the New Doha International Airport (25...

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Biological conversion of forage sorghum biomass to ethanol by steam explosion pretreatment and simultaneous hydrolysis and fermentation at high solid content

submitted by ndohrgaaclein 2 days ago

In this work, forage sorghum biomass was studied as feedstock for ethanol production by a biological conversion process comprising the steps of hydrothermal steam explosion pretreatment, enzymatic ...

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Dilute acid pretreatment for cellulosic alcohol production

submitted by ldrogaa 2 days ago

Dilute acid pretreatment can be an effective and traditional method to make raw biomass feedstock more suitable for biomass-to-ethanol conversion. Four types of biomass feedstock including switchgr...

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Experimental study on two-stage air supply downdraft gasifier and dual fuel engine system

submitted by soaram1222 2 days ago

Biomass is a widely used renewable energy resource with net balanced carbon dioxide absorptions and emissions. An inefficient use of solid biomass in combustion process emits more gaseous pollutant...

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Economic analysis of novel synergistic biofuel (H2Bioil) processes

submitted by babmellir2059 2 days ago

Fast-pyrolysis based processes can be built on small-scale and have higher process carbon and energy efficiency as compared to other options. H2Bioil is a novel process based on biomass fast-hydrop...

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Manganese oxide as catalyst for tar cleaning of biomass-derived gas

submitted by JesusAug 2 days ago

The possibilities to upgrade raw gas with the use of a manganese oxide have been investigated in an application for secondary tar cleaning of biomass-derived gas. Experiments were conducted in a re...

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Analysis of greenhouse gas emissions from microalgae-based biofuels

submitted by amor 2 days ago

Energy supply for transportation causes a major part of the anthropogenic greenhouse gas (GHG) emissions responsible for climate change. Therefore, several governments have introduced measures to p...

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Crystallization of nanomaterials

submitted by LerIssac 3 days ago

Which acts as the cornerstone of their practical applications, we review recent advances in crystallization strategy, formation mechanism, and theoretical modeling of nanomaterials. Considering the...

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Slip flow in doubly connected microchannels

submitted by BridgeFra 13 days ago

For the practical engineering design of doubly connected microchannels. The proposed models are preferable since the effects of various independent parameters are demonstrated and the difficulty an...

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Solubility of osthole in a binary system of ethanol and water

submitted by GlennNasi 13 days ago

Was measured by UV spectrophotometry from 288.2 to 328.2K. The solubility of osthole in the system increased with temperature. A synergistic effect appeared at x 2 =0.5527 (equivalent to 80% ethano...

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Effects of variation in working fluids and operating conditions on the performance of a thermoacoustic refrigerator

submitted by lekicora 14 days ago

The performance of a thermoacoustic refrigerator is evaluated based on the cooling power, coefficient of performance (COP), and the entropy generation rate within the device. The effect of the vari...

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Non-recirculating and recirculating inertial flows of a viscoplastic fluid around a cylinder

submitted by lhat 14 days ago

Were studied numerically. The Herschel-Bulkley constitutive equation was considered. The flow morphology, the stress and pressure fields around the cylinder and the drag coefficient were determined...

1 dig(s)