scholarly journals The Application of Membrane Separation Technology in the Dairy Industry

2018 ◽  
Author(s):  
Qiming Chen ◽  
Liming Zhao ◽  
Lei Yao ◽  
Qianqian Chen ◽  
Waheed Ahmad ◽  
...  
Keyword(s):  
Membrane Separation ◽  
Dairy Industry ◽  
Separation Technology

Purification of alkaline cleaning solutions from the dairy industry using membrane separation technology

Desalination ◽  
1998 ◽  
Vol 119 (1-3) ◽  
pp. 21-29 ◽  
Author(s):  
Gun Trägårdh ◽  
Dan Johansson
Keyword(s):  
Membrane Separation ◽  
Dairy Industry ◽  
Separation Technology ◽  
Alkaline Cleaning

Separation of Biologically Active Compounds by Membrane Operations

2017 ◽  
Vol 23 (2) ◽  
pp. 218-230 ◽  
Author(s):  
Xiaoying Zhu ◽  
Renbi Bai
Keyword(s):  
Energy Consumption ◽  
Bioactive Compounds ◽  
Membrane Fouling ◽  
Membrane Separation ◽  
Separation Efficiency ◽  
High Energy ◽  
Separation Processes ◽  
Membrane Processes ◽  
Separation Technology ◽  
Pressure Driven

Background: Bioactive compounds from various natural sources have been attracting more and more attention, owing to their broad diversity of functionalities and availabilities. However, many of the bioactive compounds often exist at an extremely low concentration in a mixture so that massive harvesting is needed to obtain sufficient amounts for their practical usage. Thus, effective fractionation or separation technologies are essential for the screening and production of the bioactive compound products. The applicatons of conventional processes such as extraction, distillation and lyophilisation, etc. may be tedious, have high energy consumption or cause denature or degradation of the bioactive compounds. Membrane separation processes operate at ambient temperature, without the need for heating and therefore with less energy consumption. The “cold” separation technology also prevents the possible degradation of the bioactive compounds. The separation process is mainly physical and both fractions (permeate and retentate) of the membrane processes may be recovered. Thus, using membrane separation technology is a promising approach to concentrate and separate bioactive compounds. Methods: A comprehensive survey of membrane operations used for the separation of bioactive compounds is conducted. The available and established membrane separation processes are introduced and reviewed. Results: The most frequently used membrane processes are the pressure driven ones, including microfiltration (MF), ultrafiltration (UF) and nanofiltration (NF). They are applied either individually as a single sieve or in combination as an integrated membrane array to meet the different requirements in the separation of bioactive compounds. Other new membrane processes with multiple functions have also been developed and employed for the separation or fractionation of bioactive compounds. The hybrid electrodialysis (ED)-UF membrane process, for example has been used to provide a solution for the separation of biomolecules with similar molecular weights but different surface electrical properties. In contrast, the affinity membrane technology is shown to have the advantages of increasing the separation efficiency at low operational pressures through selectively adsorbing bioactive compounds during the filtration process. Conclusion: Individual membranes or membrane arrays are effectively used to separate bioactive compounds or achieve multiple fractionation of them with different molecule weights or sizes. Pressure driven membrane processes are highly efficient and widely used. Membrane fouling, especially irreversible organic and biological fouling, is the inevitable problem. Multifunctional membranes and affinity membranes provide the possibility of effectively separating bioactive compounds that are similar in sizes but different in other physical and chemical properties. Surface modification methods are of great potential to increase membrane separation efficiency as well as reduce the problem of membrane fouling. Developing membranes and optimizing the operational parameters specifically for the applications of separation of various bioactive compounds should be taken as an important part of ongoing or future membrane research in this field.

scholarly journals Status and progress of membrane separation technology in water capture in flue gas

2021 ◽  
Vol 657 (1) ◽  
pp. 012112
Author(s):  
Danghui Ren ◽  
Zhimin Li ◽  
Hongchang Ding
Keyword(s):  
Flue Gas ◽  
Membrane Separation ◽  
Separation Technology

scholarly journals Membrane Separation Technology in Carbon Capture

10.5772/65723 ◽  
2017 ◽  
Author(s):  
Guozhao Ji ◽  
Ming Zhao
Keyword(s):  
Carbon Capture ◽  
Membrane Separation ◽  
Separation Technology

Chapter 7 Forward Osmosis Membrane Separation Technology

2021 ◽  
pp. 267-324
Author(s):  
Lin Wang ◽  
Wanzhu Zhang ◽  
Bingzhi Dong
Keyword(s):  
Membrane Separation ◽  
Forward Osmosis ◽  
Separation Technology

Glycerol removal from biodiesel using membrane separation technology

Fuel ◽  
2010 ◽  
Vol 89 (9) ◽  
pp. 2260-2266 ◽  
Author(s):  
Jehad Saleh ◽  
André Y. Tremblay ◽  
Marc A. Dubé
Keyword(s):  
Membrane Separation ◽  
Separation Technology

A more Sustainable Polyurethane Membrane for Gas Separation at Room Temperature and Low Pressure

2019 ◽  
Vol 965 ◽  
pp. 125-132
Author(s):  
Gabriela H.G. Santos ◽  
Maíra A. Rodrigues ◽  
Helen Conceição Ferraz ◽  
Luiza Cristina Moura ◽  
Jussara Lopes de Miranda
Keyword(s):  
Room Temperature ◽  
Membrane Separation ◽  
Polymer Membranes ◽  
Low Pressure ◽  
Gas Separations ◽  
Low Power Consumption ◽  
X Ray ◽  
Separation Technology ◽  
Scanning Electron ◽  
Polyurethane Membrane

Membrane separation technology has been recently attracted more attention as an option for gas separations due to its compact system, ease of operation and low power consumption. In this study, polymer membranes with different percentages of polyurethane were synthesized and submitted to permeability and selectivity tests for the following gases, CO2, N2, O2 and CH4, at two pressures of 4 and 8 bar and at room temperature. The membranes were characterized by FTIR-ATR, Scanning electron microscope (SEM), Thermogravimetric analysis (TGA) and X-ray diffractometer (XRD). At low pressure of 4 bar and room temperature, the membrane with low percentage of PU, 10 %, presented the higher selectivity to CO2 in relation to both N2 and CH4. The same behavior was observed at a high pressure of 8 bar, with higher selectivity to CO2 in relation to all studied gases, N2, O2 and CH4, compared to the already analogous reported membranes submitted at greater pressures.

Sign in / Sign up

Export Citation Format

Share Document