Assessment of the Total Volume Membrane Charge Density through Mathematical Modeling for Separation of Succinic Acid Aqueous Solutions on Ceramic Nanofiltration Membrane

Agata Marecka-Migacz,Jerzy Antczak,Jacek Różański,Krystyna Prochaska,Piotr Tomasz Mitkowski

doi:10.3390/pr7090559

Agata Marecka-Migacz, Jerzy Antczak + Show 3 more

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https://doi.org/10.3390/pr7090559

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Journal: Processes	Publication Date: Aug 23, 2019
Citations: 5	License type: CC BY 4.0

Affiliation: Poznań University of Technology

Abstract

Nanofiltration of aqueous solutions of succinic acid with the addition of sodium hydroxide or magnesium hydroxycarbonate has been investigated experimentally and modeled with the comprehensively described Donnan–Steric partitioning model. The experimental retentions of acid at the same pH varied between 16% and 78%, while the estimated total volume membrane charge densities were in the range of −35.73 and +875.69 mol/m3. This work presents a novel insight into the modeling of nanofiltration and investigates the relations between the estimated total volume membrane charge densities, ionic strength, and component concentration on the performance of ceramic membrane. In addition, this study takes into consideration other parameters such as pH regulation and viscosities of solutions.

Highlights

Diminishing resources of fossil fuels, vulnerability of their prices, global warming, and environmental pollution result in a large interest in renewable and unconventional energy sources.one of these resources is biodiesel, which is currently under rigorous investigation [1].Biodiesel is composed from renewable biological sources, such as vegetable oils and animal fats.It is biodegradable and nontoxic, and is characterized by low emission profiles and is environmentally benign [2,3], significant amounts of waste are generated during its production, which mainly consists of the glycerol phase
It is well known that the following key parameters primarily affect the rejection of organic solutes during NF separations and are related to:
It has to be clearly stated that the negatively hydrophilic solutes can be rejected by electrostatic repulsion through negatively charged membrane surfaces

Summary

Introduction

Diminishing resources of fossil fuels, vulnerability of their prices, global warming, and environmental pollution result in a large interest in renewable and unconventional energy sources.one of these resources is biodiesel, which is currently under rigorous investigation [1].Biodiesel is composed from renewable biological sources, such as vegetable oils and animal fats.It is biodegradable and nontoxic, and is characterized by low emission profiles and is environmentally benign [2,3], significant amounts of waste are generated during its production, which mainly consists of the glycerol phase. Diminishing resources of fossil fuels, vulnerability of their prices, global warming, and environmental pollution result in a large interest in renewable and unconventional energy sources. One of these resources is biodiesel, which is currently under rigorous investigation [1]. Biodiesel is composed from renewable biological sources, such as vegetable oils and animal fats. It is biodegradable and nontoxic, and is characterized by low emission profiles and is environmentally benign [2,3], significant amounts of waste are generated during its production, which mainly consists of the glycerol phase. Global primary energy consumption was projected to grow by 1.5 % per year between 2012 and 2035, whereas the energy from renewable resources, including biofuels, was expected to grow by 6.4% per year [5]

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