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Extraction of polycosanol from cane vinasse

A technology of molasses alcohol waste liquid and pliol, which is applied in the field of extracting pliol from molasses alcohol waste liquid, and can solve problems such as soil and groundwater pollution

Inactive Publication Date: 2016-07-20
DOW GLOBAL TECH LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is growing concern that molasses alcohol effluents used as fertilizers or disposed of by these methods will contaminate soil and / or groundwater

Method used

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  • Extraction of polycosanol from cane vinasse
  • Extraction of polycosanol from cane vinasse
  • Extraction of polycosanol from cane vinasse

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0038] Example 1: Microfiltration of molasses alcohol waste (step a))

[0039] The feed is molasses alcohol waste liquid. Microfiltration was purchased from NovasepProcess KERASEP TM performed by a ceramic membrane. Using MicroKerasep TM Pilot plant to achieve a total filtration area of ​​0.023m 2 . The molasses alcohol spent liquor was loaded into the feed tank, pumped to circulate the liquor at 5 m / s with the transmembrane pressure set at 400 kPa (4 bar). Operate the system in batches. Permeate withdrawal was continued until no permeate flow was measured. The volumetric concentration factor [VCF=volume of feed / volume of retentate] was monitored. The permeate is collected to be fed to reverse osmosis.

[0040] Three membranes with cut-off sizes of 0.1 μm, 0.2 μm and 0.45 μm were tested. Membranes with a cutoff of 0.1 μm had the highest flow rates and the least tendency to become clogged. Perform microfiltration using a membrane with a particle cut-off of 0.1 μm unti...

example 2

[0042] Example 2: Reverse Osmosis (RO) (step b))

[0043] The feed was the permeate from Example 1. The pilot plant was equipped with a 4000 kPa (40 bar), 1250 l / h piston pump, RO / NF helical housing module. Pressure is set with a back pressure needle valve and flow rate is controlled with a flow meter. The feed was loaded into the feed tank and then concentrated until 4000 kPa (40 bar) was reached. Operating system in batch mode. The pressure was adjusted to keep the permeate flow rate below 100 liters / hour to prevent bursting of the element. Registered (registered) VCF, until the maximum operating pressure is reached. The operation was carried out at a constant pressure of 3000 kPa (30 bar). Membrane is FILMTEC purchased from Filmtec Corporation TM BW30-2540 film.

[0044] The flow rate decreased continuously with the concentration increasing, and the maximum VCF reached was 3.9. The average flow rate at this concentration is about 10l / h.m 2 . After the concentratio...

example 3

[0055] Example 3: Ion exclusion chromatography (step c)).

[0056] The chromatography column is a 25 mm x 1000 mm glass column with adjustable plunger and sleeve for temperature control, distributed with 25 μm PTFE frit. The total resin exchange capacity is about 460ml. A circulating water bath was used at 60 °C, along with a peristaltic pump and an autosampler.

[0057]Resin is Dowex TM 99320 Resin and Amberlite TM CR1310 resin (both available from Dow Chemical Co.).

[0058] resin filled

[0059] Resin loading was performed in a column half filled with degassed demineralized water. After heating to the proper temperature by recirculating hot water (flow rate = 4BV / h) during at least 30 minutes, the resin level was adjusted.

[0060] Before any separation, the resin was compacted by performing a double pulse test, but without any sampling and data recording (flow rate = 4BV / h). Compaction is due to the expansion and contraction of the resin, after which the product is ...

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PUM

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Abstract

Provided is a process for extracting polycosanol from cane vinasse comprising providing a cane vinasse concentrate, wherein the amount of organic compounds in said cane vinasse concentrate is 35 g / l or more, and wherein said cane vinasse concentrate is effectively free of solid particles having diameter of 10 [mu]m or higher, performing an ion exclusion chromatography step c) on said cane vinasse concentrate to produce an extract (EC) and a raffinate (RC), performing a concentration step y) on said raffinate (RC) to produce a permeate (PY) and a retentate (RY), and performing a separation step d)ii) on said retentate (RY) to produce a retentate (RDII) that contains polycosanol.

Description

Background technique [0001] An important method of producing ethanol is the fermentation of sucrose extracted from sugar cane. A by-product of this process is canevinasse, which is a dilute aqueous liquid containing salts and organic compounds. Molasses alcohol effluent typically has a dark color, unpleasant odor, and acidic pH. At present, the common disposal method of molasses alcohol waste liquid is to treat it as waste or as fertilizer. Common waste disposal methods for molasses alcohol effluent involve depositing in the soil or in lagoons. There is growing concern that molasses alcohol effluents used as fertilizers or disposed of by these methods will contaminate soil and / or groundwater. There will be a need to find a way to extract valuable compounds from molasses alcohol effluent, instead of simply treating molasses alcohol effluent as waste or using it as a fertilizer of dubious value. [0002] US2002 / 0169311 describes a process in which artificial molasses alcohol...

Claims

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Application Information

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IPC IPC(8): B01D15/02B01D15/36B01D61/14C13B20/14C13B20/16
CPCB01D15/365B01D61/027C13B20/148B01D15/362B01D15/3804B01D2311/2697B01D2311/2626C07C29/74
Inventor P·E·M·阿尔茨R·拉莫斯S·皮斯S·巴杜安
Owner DOW GLOBAL TECH LLC
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