A Survey of Effective Parameters in Biomass Separation Using Vacuum Membrane Filtering: A Case Study of Pectin Acidic Solution

Authors
shoaib gholami 1
Saeid Minaei 2
Alireza Mahdavian 3
1 MSc, Biosystems Engineering Department, Faculty of Agriculture, Tarbiat Modares University (TMU), Tehran, Iran
2 Professor, Biosystems Engineering Department, Faculty of Agriculture, Tarbiat Modares University (TMU), Tehran, Iran
3 Assistant Professor, Biosystems Engineering Department, Faculty of Agriculture, Tarbiat Modares University (TMU), Tehran, Iran
10.22034/FSCT.20.138.64
Abstract
Pectin, which is made from citrus peel and waste, is one of the most commonly used compounds in the food industry. For large scale production, a combination of membrane-vacuum filtering has been suggested as an alternative to traditional methods of purifying the acidic solution for pectin extraction. This study investigates the main factors involved in membrane filtering system for separation of fibrous materials from an acidic pectin solution under vacuum. These factors which include: filter-aid-particle size, amount of filter-aid (perlite) added to the solution, and the vacuum level, affect, separation quality, volumetric flow rate, and energy consumption . A vacuum separation device was developed for this purpose in order to separate the fibrous material dissolved in solution. The independent variables were examined at three levels, the data were analyzed, and the optimum value for each variable was determined using the response surface method (RSM). Results revealed that increasing the vacuum level from 0.2 to 0.4 bar increases the flow-rate 6.5 folds, while, further increase in the vacuum level decreases the flow-rate. This indicates clogging of the paper filter and decreased flow-rate at vacuum level of 0.6 bar and perlite particle size of 100 microns. The evaluation results showed that thickness of the perlite layer has the greatest effect on the separation efficiency and when increased from 1 to 2 cm, increases the efficiency 2.5 folds. The maximum value of separation efficiency was obtained at a vacuum level of 0.2 bar, particle size of 20 microns and perlite thickness of 2 cm. The energy consumption of 60-micron perlite was 0.74 Wh in the optimal state, and the larger and smaller sizes of perlite had 4.5 times the energy consumption. These findings are applicable in the industrial scale implementation of a biomaterial separation system using vacuum membrane filtering.
Keywords
Extraction
yield
energy consumption
Orange peel
Perlite

Subjects

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