Results 51 to 60 of about 351 (174)

Prediction of the isothermal evaporation experiment of actual salt lake brine at 25 ℃ utilizing the extended UNIQUAC model

Desalination and Water Treatment
In the realm of salt lake resource research, 25 °C stands out as the preponderantly adopted temperature for isothermal evaporation experiments. Expediting the exploration of its experimental procedures holds profound implications for the efficacious ...
Yongming Zhang, Shichun Zhang, Yanfang Ma, Aijun Jiao, Zhenhai Fu, Haigang Liu   +5 more
doaj   +1 more source

Modeling wax formation with predictive UNIQUAC: from petroleum and fuels to biofuels [PDF]

MATEC Web of Conferences, 2013
A decade ago a model was proposed by us to describe the wax formation in crude oils and distillate fuels. Based on the Predictive UNIQUAC concept the model was very successful and was widely adopted by the industry [1]. With the advent of biofuels the incorporation of methyl or ethyl esters in the diesel was required and the presence of saturated long ...
openaire   +3 more sources

Optimal design of reduced vapor transfer dividing wall structures with and without heat integration

AIChE Journal, Volume 70, Issue 11, November 2024.
Abstract A dividing wall column (DWC) is a prime example of process intensification, whereby significant energy and cost savings can be achieved for some systems compared to operation in conventional design of two columns in series. It has been theorized that the vapor and liquid thermal coupling streams in the DWC could be replaced by liquid‐only ...
Fanyi Duanmu, Eva Sorensen
wiley   +1 more source

Liquid‐Liquid Phase Equilibrium of Glycerolysis Precursors: Experimental and Modeling Study

Chemical Engineering &Technology, Volume 47, Issue 1, Page 208-216, January 2024.
Glycerol and oleic acid are mutually immiscible components. Their rigorous reaction produces glycerol esters and water. Such mutual immiscibility of glycerol and free fatty acids limits glycerolysis, a reaction capable of upgrading waste‐derived oils. The glycerol solubility in the fatty phase increases when glycerol esters are added to the immiscible ...
Kapil Mamtani, Christian L. da Silveira, Mohammed M. Farid, Kaveh Shahbaz   +3 more
wiley   +1 more source

Biogas Production Optimization in the Anaerobic Codigestion Process: A Critical Review on Process Parameters Modeling and Simulation Tools

Journal of Chemistry, Volume 2024, Issue 1, 2024.
Many operational parameters, either discretely or collectively, can influence the biodegradation performance towards enhancing biogas yield and quality. Among the operating parameters, organic loading rate (OLR), inoculum‐substrate ratio, and carbon‐nitrogen ratio (C/N) are the most critical parameters in the optimization and enhancement of biogas ...
Mohammed Kelif Ibro, Venkata Ramayya Ancha, Dejene Beyene Lemma, Claudio Di Iaconi   +3 more
wiley   +1 more source

On the application of nonelectrolyte UNIQUAC-NRF model for strong aqueous electrolyte solutions

Fluid Phase Equilibria, 2016
Abstract An excess Gibbs free energy model composed of a short range term, expressed by the nonelectrolyte UNIQUAC-NRF model, and a long range contribution based on the Pitzer-Debye-Huckel equation is implemented for strong aqueous electrolyte solutions.
Pahlevanzadeh, Hassan, Mohseni Ahooei, Amir   +1 more
openaire   +3 more sources

Parametric and Nonparametric Approaches of Reid Vapor Pressure Prediction for Gasoline Containing Oxygenates: A Comparative Analysis Using Partial Least Squares, Nonlinear, and LOWESS Regression Modelling Strategies with Physical Properties

Modelling and Simulation in Engineering, Volume 2024, Issue 1, 2024.
This study provides insights into the challenges involved in predicting the Reid vapor pressure (RVP) of gasoline‐oxygenate blends (GOB), which is an important indicator of fuel quality and compliance with environmental and performance standards. Given the enormous variety of gasoline compositions and ratios available, there is a significant demand for
Hayder M. Issa, Chen Lin Soo
wiley   +1 more source

Separation Process for Methanol–Methylal–Methyl Formate Multicomponent System in Polyformaldehyde Production Waste Liquid: Modeling and Techno-Economic Analysis

Separations
The vapor–liquid equilibrium (VLE) data of the ternary system methanol–methyl formate–methylal was measured at atmospheric pressure using a modified Rose equilibrium kettle with vapor–liquid double circulation method.
Huajie Liu, Jun Fan, Weiping Liu, Yong Wang, Qiuhong Ai, Yonglin Li   +5 more
doaj   +1 more source

Vapor-Liquid Equilibria Data for 2-Piperidineethanol and 1-(2-Hydroxyethyl)pyrrolidine in Aqueous Solutions and a UNIQUAC Model Representation. [PDF]

J Chem Eng Data, 2022
Hartono A, Nøkleby C, Kim I, Knuutila HK.   +3 more
europepmc   +1 more source

Parameter Interaksi Biner Kesetimbangan Uap-Cair Campuran yang Melibatkan Alkohol Rantai Bercabang atau Aseton untuk Optimasi Proses Pemurnian Bioetanol

Jurnal Teknik Kimia dan Lingkungan, 2019
Parameter interaksi biner kesetimbangan uap-cair campuran yang melibatkan alkohol rantai bercabang atau aseton telah ditentukan pada penelitian ini. Data kesetimbangan uap-cair kondisi isobarik pada tekanan atmosferik telah dipilih total sebanyak 14 ...
Asalil Mustain, Khalimatus Sa'diyah, Agung Ari Wibowo, Dhoni Hartanto   +3 more
doaj   +1 more source