Process for separation of a mixture containing a microbial substance and a liquid

A technology of microorganisms and mixtures, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of high energy consumption, non-continuous operation, clogging of filters and regular maintenance, and achieve the effect of reduced energy consumption and less maintenance

Inactive Publication Date: 2013-10-30
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the disadvantage of the method of US2010 / 0184197 is that high energy consumption is required for filtering
The downside of this method is that it cannot be done continuously and it requires additional energy
[0011] Disadvantages of centrifugation to separate microorganisms from surrounding liquids are the high energy consumption of the separation process and the fact that the rotating parts of the centrifuge are subject to wear and require regular maintenance
Furthermore, extensive centrifugation can disrupt the cell walls of microorganisms even when not needed
[0012] The downside of traditional filtration to separate microorganisms from surrounding fluids is that the filters can clog and require regular maintenance

Method used

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  • Process for separation of a mixture containing a microbial substance and a liquid
  • Process for separation of a mixture containing a microbial substance and a liquid
  • Process for separation of a mixture containing a microbial substance and a liquid

Examples

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Embodiment 1

[0170] About 760 kg of an aqueous mixture comprising diatoms and having a dry matter content of about 1 wt % (based on the total weight of the mixture) was coagulated and flocculated using 10 ppmw of flocculant (Nalco 71303) to produce coagulated and flocculated water and algae of the slurry. The slurry was sent via a peristaltic pump to a dissolved air flotation (DAF) unit where air was blown into the slurry at a flow rate of 5 l / min (=20 NL / min) at a pressure of 4 bar. A concentrated aqueous slurry is skimmed from the top of the mixture in the DAF unit. The concentrated aqueous slurry has a dry matter content of about 4 wt%, based on the total weight of the slurry. About 25 kg of this concentrated aqueous slurry was then sent to a pre-filtration unit comprising a polymeric filter with a pore size of about 170 μm. This slurry is then sent to a deformable filter located in a so-called dynamic belt filter press. The deformable filter comprises a polypropylene filter with a m...

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Abstract

A process for separation of a mixture containing a microbial substance and a liquid using deformable filter is provided.

Description

technical field [0001] The present invention relates to a method for separating a mixture comprising microbial material and a liquid. Background technique [0002] As the supply of mineral crude oil decreases, the use of renewable energy is becoming increasingly important for the production of chemicals and fuel products. These fuels and chemical products from renewable energy sources are commonly referred to as biofuels and biochemicals, respectively. One of the benefits of using renewable energy is that compared with conventional energy, CO 2 The balance is more favorable. [0003] Biofuels and / or biochemicals derived from non-edible renewable energy sources are preferred because they do not compete with food production. [0004] For example, the oil can be obtained from the microorganisms by secretion of the oil by the microorganisms or by extraction of the oil after disruption of the cell walls of the cells of the microorganisms. [0005] For example, ethanol for fue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/00B01D29/76
CPCC11B1/00
Inventor H·范卡托文J·P·哈恩W·M·邦德J·L·W·C·丹博伊斯特尔特
Owner SHELL INT RES MAATSCHAPPIJ BV
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