This paper reports the study of the cross-flow microfiltration (MF) of glycerol fermentation broths with bacteria. A single channel tubular ceramic membrane with a nominal pore size of 0.14 µm was used. It has been demonstrated that the MF ceramic membrane has been successfully applied to bacteria cell removal and to effectively eliminate colloidal particles from glycerol fermentation broths. However, due to fouling, the significant reduction of the MF performance has been demonstrated. In order to investigate the impact of transmembrane pressure (TMP) and feed flow rate (Q) on MF performance, 24 experiments have been performed. The highest steady state permeate flux (138.97 dm/mh) was achieved for 0.12 MPa and 1000 dm/h. Fouling analysis has been studied based on the resistance-in series model. It has been found that the percentage of irreversible fouling resistance during the MF increases with increasing TMP and Q. The permeate flux regeneration has been achieved by membrane cleaning with 3 wt % NaOH and 3 wt % HPO at 45 °C. The results of this study are expected to be useful in industrially employing the MF process as the first step of glycerol fermentation broth purification.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7231405 | PMC |
| http://dx.doi.org/10.3390/membranes10040067 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-Yield Production of Polyhydroxybutyrate and Poly(3-hydroxybutyrate--3-hydroxyhexanoate) from Crude Glycerol by a Newly Isolated Species Oh_219.
Polymers (Basel)
January 2025
Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea.
Crude glycerol (CG), a major biodiesel production by-product, is the focus of ongoing research to convert it into polyhydroxyalkanoate (PHA). However, few bacterial strains are capable of efficiently achieving this conversion. Here, 10 PHA-producing strains were isolated from various media.
View Article and Find Full Text PDFEnhanced Tolerance to Antifungals as a General Feature of Rho Mutants in Yeast Species: Implications to Positive Selection of Respiratory Deficiency.
Microorganisms
January 2025
Centre for Bioscience, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester M1 5GD, UK.
Although the mitochondrial genome is an attribute of all eukaryotes, some yeast species (called petite-positive) can replicate without mitochondrial DNA (mtDNA). Strains without mtDNA (known as rho mutants or petite mutants) are respiration-deficient and require fermentable carbon sources (such as glucose) for their metabolism. However, they are compromised in many aspects of fitness and competitiveness.
View Article and Find Full Text PDFEffects of Glycerol Monooleate on Improving Quality Characteristics and Baking Performance of Frozen Dough Breads.
Foods
January 2025
Heyuan Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Heyuan 517000, China.
This study investigated the impact of glycerol monooleate (MO) at varying levels (0.3%, 0.6%, 0.
View Article and Find Full Text PDFComparative Proteomics of Two Flor Yeasts in Sparkling Wine Fermentation: First Approach.
Foods
January 2025
Department of Agricultural Chemistry, Edaphology and Microbiology, Agrifood Campus of International Excellence ceiA3, University of Córdoba, 14014 Córdoba, Spain.
The traditional method is considered the highest-quality sparkling wine making technique. Its main characteristic is that the entire sparkling transformation takes place in the bottle, producing complex, refined wines with fine, persistent bubbles. Currently, the second fermentation in the bottle is initiated by a few commercially available strains of .
View Article and Find Full Text PDFOptimization of the Cryoprotectants for Direct Vat Set Starters in Sichuan Paocai Using Response Surface Methodology.
Foods
January 2025
College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
The quality of Sichuan paocai in natural fermentation is often inconsistent due to the complexity of its microbial community and environmental influences. To address this, dominant microbial strains were selectively inoculated to improve the product's quality and safety. However, vacuum freeze-drying, commonly used to prepare direct vat set (DVS) starters, can significantly damage strains due to freezing stress.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!