WO2024097329A1 - Séparateur smb pour purification d'acide organique à l'aide d'une résine cationique fortement acide - Google Patents
Séparateur smb pour purification d'acide organique à l'aide d'une résine cationique fortement acide Download PDFInfo
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- WO2024097329A1 WO2024097329A1 PCT/US2023/036656 US2023036656W WO2024097329A1 WO 2024097329 A1 WO2024097329 A1 WO 2024097329A1 US 2023036656 W US2023036656 W US 2023036656W WO 2024097329 A1 WO2024097329 A1 WO 2024097329A1
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- Prior art keywords
- acid
- purifying
- organic
- organic acid
- smb
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- 150000007524 organic acids Chemical class 0.000 title claims abstract description 71
- 239000002253 acid Substances 0.000 title claims description 43
- 239000011347 resin Substances 0.000 title claims description 24
- 229920005989 resin Polymers 0.000 title claims description 24
- 150000001768 cations Chemical class 0.000 title claims description 10
- 238000000746 purification Methods 0.000 title description 12
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000004587 chromatography analysis Methods 0.000 claims abstract description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000855 fermentation Methods 0.000 claims abstract description 21
- 230000004151 fermentation Effects 0.000 claims abstract description 21
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- 239000003480 eluent Substances 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 12
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 12
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 10
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- 239000011707 mineral Substances 0.000 claims description 9
- 235000000346 sugar Nutrition 0.000 claims description 9
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims description 8
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 8
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 8
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 8
- 235000015165 citric acid Nutrition 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 150000008163 sugars Chemical class 0.000 claims description 6
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 5
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 5
- 239000001530 fumaric acid Substances 0.000 claims description 5
- 235000011087 fumaric acid Nutrition 0.000 claims description 5
- 239000004310 lactic acid Substances 0.000 claims description 5
- 235000014655 lactic acid Nutrition 0.000 claims description 5
- 239000001630 malic acid Substances 0.000 claims description 5
- 235000011090 malic acid Nutrition 0.000 claims description 5
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 claims description 4
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 4
- DSLZVSRJTYRBFB-LLEIAEIESA-N D-glucaric acid Chemical compound OC(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O DSLZVSRJTYRBFB-LLEIAEIESA-N 0.000 claims description 4
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 4
- QXKAIJAYHKCRRA-UHFFFAOYSA-N D-lyxonic acid Natural products OCC(O)C(O)C(O)C(O)=O QXKAIJAYHKCRRA-UHFFFAOYSA-N 0.000 claims description 4
- QXKAIJAYHKCRRA-FLRLBIABSA-N D-xylonic acid Chemical compound OC[C@@H](O)[C@H](O)[C@@H](O)C(O)=O QXKAIJAYHKCRRA-FLRLBIABSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 4
- DSLZVSRJTYRBFB-UHFFFAOYSA-N Galactaric acid Natural products OC(=O)C(O)C(O)C(O)C(O)C(O)=O DSLZVSRJTYRBFB-UHFFFAOYSA-N 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 4
- 235000011054 acetic acid Nutrition 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 4
- 235000011037 adipic acid Nutrition 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 claims description 4
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 4
- 235000019253 formic acid Nutrition 0.000 claims description 4
- DSLZVSRJTYRBFB-DUHBMQHGSA-N galactaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)[C@@H](O)[C@H](O)C(O)=O DSLZVSRJTYRBFB-DUHBMQHGSA-N 0.000 claims description 4
- 239000000174 gluconic acid Substances 0.000 claims description 4
- 235000012208 gluconic acid Nutrition 0.000 claims description 4
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 4
- 239000011976 maleic acid Substances 0.000 claims description 4
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 235000006408 oxalic acid Nutrition 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000011975 tartaric acid Substances 0.000 claims description 4
- 235000002906 tartaric acid Nutrition 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 6
- 150000001720 carbohydrates Chemical class 0.000 abstract description 3
- 235000014633 carbohydrates Nutrition 0.000 abstract description 3
- -1 color Chemical class 0.000 abstract description 2
- 235000010633 broth Nutrition 0.000 description 17
- 235000005985 organic acids Nutrition 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 229930006000 Sucrose Natural products 0.000 description 4
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 4
- 239000003957 anion exchange resin Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000005720 sucrose Substances 0.000 description 4
- 238000005349 anion exchange Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 239000003729 cation exchange resin Substances 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 235000013379 molasses Nutrition 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000219310 Beta vulgaris subsp. vulgaris Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920002307 Dextran Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229930091371 Fructose Natural products 0.000 description 1
- 239000005715 Fructose Substances 0.000 description 1
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 235000021536 Sugar beet Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 229940023913 cation exchange resins Drugs 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000005595 deprotonation Effects 0.000 description 1
- 238000010537 deprotonation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000003599 food sweetener Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/18—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns
- B01D15/1814—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns recycling of the fraction to be distributed
- B01D15/1821—Simulated moving beds
- B01D15/1828—Simulated moving beds characterized by process features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/18—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns
- B01D15/1814—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns recycling of the fraction to be distributed
- B01D15/1821—Simulated moving beds
- B01D15/185—Simulated moving beds characterized by the components to be separated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/26—Selective adsorption, e.g. chromatography characterised by the separation mechanism
- B01D15/36—Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction
- B01D15/361—Ion-exchange
- B01D15/362—Cation-exchange
Definitions
- This disclosure relates generally to simulated moving bed (SMB) separation and purification systems and methods.
- SMB simulated moving bed
- this disclosure relates to systems and methods for an SMB separator for organic acid purification using a strong acid cation resin.
- Organic acids such as lactic acid, malic acid, fumaric acid, and citric acid are widely used in the food industry as flavorings and acidulants.
- Industrially the upstream process for producing many commercially available organic acids typically involves the fermentation of either cane or beat sugar molasses or corn syrups.
- molasses is commonly used due to the integrated sugars, amino acids, and salts aiding in the growth of the bacteria or yeast to produce the desired organic acid.
- the fermentation broth containing the organic acid product must undergo several purification steps to reduce the residual sugar, ash, and color content of the fermentation broth before crystallizing the organic acid. It is common to utilize a two-step precipitation process to remove most of the color and monovalent salts from the fermentation broth.
- a technology that has been historically investigated into for the purification of these organic acids is ion exchange, as it would eliminate the gypsum byproduct waste of the gypsum purification process.
- These methods use various types of anion exchange resin to bind the deprotonated organic acid followed by elution with salt, caustic, or acid as taught in EP2592952B1, US6641734, US5382681, US6087139, and US2664441 for which the contents of each are hereby incorporated by reference. This facilitates the removal of the residual sugar, ash, and color impurities in the fermentation broth.
- anion exchange for organic acid purification is the high amount of chemical required during the elution step of the ion exchange cycle.
- Strong acid cation (SAC) exchange resins have been extensively used to purify neutral sugars such as sucrose, glucose, and fructose in the sweetener industries using SMB chromatography.
- the eluent for regenerating the SAC resin is simply condensate water produced elsewhere in the plant. This minimizes the amount of chemical consumed and disposed of compared to an ion exchange process.
- organic acids could be purified from fermentation broths using a SAC resin instead of anion exchange as is typically practiced.
- SAC resins are typically used to purify positively -charged compounds from impurities.
- the use of a cation exchange resin to purify organic acids which tend to dissociate into negatively-charged compounds is not known to be used for purification by those skilled in the art.
- Other drawbacks and inefficiencies also exist with current systems and methods.
- An additional advantage from this process is that unlike anion exchange resins, cation exchange resins are resistant to organic foulants such as dextran and polysaccharides often found in fermentation broths. Furthermore, SAC resins are available in smaller resin particle sizes compared to anion exchange resins which further reduce the resin and eluent requirements for the SMB process utilizing a SAC resin.
- Disclosed embodiments include processes for purifying an organic acid including separating an organic acid from a fermentation broth (FB) by adding an acid to the FB to form protonated organic acid, creating a solution of dissolved solids from the protonated organic acid, processing the solution of dissolved solids by using it as feedstock in a simulated moving bed (SMB) chromatography system that uses a dilute acid as an eluent and a strong acid cation (SAC) exchange resin, and wherein each step of the SMB chromatography system is divided into two sub-periods wherein a first sub-period encompasses a span of time where the feedstock and the eluent are injected into distinct columns within a recirculation loop and, concurrently, extract and raffinate fractions are also withdrawn from the SMB chromatography system at defined points and during a second sub-period an internal solids profile is recirculated within the SMB chromatography system without any additional material added or removed.
- SMB
- the FB comprises salt, color waste, fermentable sugars.
- the organic acid is selected from the group including, but not limited to, citric acid, malic acid, fumaric acid, acetic acid, tartaric acid, glycolic acid, glucaric acid, lactic acid, xylonic acid, gluconic acid, galactaric acid, succinic acid, maleic acid, itaconic acid, malonic acid, terephthalic acid, phthalic acid, glutaric acid, adipic acid, 3-hydroxyproponic acid, formic acid, and oxalic acid.
- the process of purifying an organic acid includes adding an acid to the FB to lower the pH of the FB to be substantially between 1.0-2.0. In some embodiments, the step of adding an acid to the FB includes adding 93% concentrated sulfuric acid.
- the eluent used in the SMB chromatography system comprises acidified water where the acid used is a mineral acid.
- the acidified water includes, but is not limited to, sulfuric acid, hydrochloric acid, nitric acid, or phosphoric acid.
- the process of purifying an organic acid includes adjusting the pH of the acidified water to be substantially between 1.0-2.0.
- Also disclosed are systems for purifying an organic acid including a simulated moving bed (SMB) chromatography system for processing a solution of dissolved solids by using it as feedstock and that uses a dilute acid as an eluent, a strong acid cation (SAC) exchange resin, and wherein each step of the SMB chromatography system is divided into two sub-periods wherein a first sub-period encompasses a span of time where the feedstock and the eluent are injected into distinct columns within a recirculation loop and, concurrently, extract and raffinate fractions are also withdrawn from the SMB chromatography system at defined points and during a second sub-period an internal solids profile is recirculated within the SMB chromatography system without any additional material added or removed.
- SMB simulated moving bed
- the solution of dissolved solids is formed by separating an organic acid from a fermentation broth (FB) by adding a mineral acid to the FB to form protonated organic acid.
- the mineral acid is selected from the group including, but not limited to, sulfuric acid, hydrochloric acid, nitric acid, or phosphoric acid.
- the FB comprises salt, color waste, fermentable sugars.
- the organic acid is selected from the group including, but not limited to, citric acid, malic acid, fumaric acid, acetic acid, tartaric acid, glycolic acid, glucaric acid, lactic acid, xylonic acid, gluconic acid, galactaric acid, succinic acid, maleic acid, itaconic acid, malonic acid, terephthalic acid, phthalic acid, glutaric acid, adipic acid, 3-hydroxyproponic acid, formic acid, and oxalic acid.
- system for purifying an organic acid included an acid added to the FB to lower the pH of the FB to be substantially between 1.0-2.0.
- the acid added to the FB comprises 93% concentrated sulfuric acid.
- the system for purifying an organic acid includes adjusting the pH of the mineral acid to be substantially between 1.0-2.0.
- FIG. 1 illustrates the disclosed exemplary embodiments’ effectiveness of using a SAC resin in an SMB system to purify organic acids from sucrose, ash, and color.
- FIG. 2 depicts an SMB system to produce purified organic acid from a fermentation broth according to embodiments of the disclosure.
- a fermentation broth containing approximately 30,000 ppm salt, 275.0 absorbance units of color, 1-2 w/w% sucrose and 7-8 w/w% organic acid was adjusted with 93% concentrated sulfuric acid to lower the pH to between 1.0 - 2.0 to fully protonate the target organic acid to be purified.
- the deionized (DI) water used as eluent was also pH adjusted to 1.0 - 2.0 pH with 93% concentrated sulfuric acid. Otherwise, the more neutral pH of DI water would raise the pH of the fermentation broth causing the citric acid to deprotonate. To stop this deprotonation from occurring it was also important that the starting fluid in the column be the pH adjusted eluent, and that the resin be soaked in the eluent prior to beginning a run of the process. The results from one of the exemplary runs are shown FIG. 1.
- a SMB chromatography system was used to purify the organic acid from the various other impurities on a continuous basis.
- a solution containing 30-40% total dissolved solids of a citric acid containing material was processed using the SMB system as configured in FIG. 2 in which items 1-6 indicate individual columns of the SMB.
- a solution of diluted sulfuric acid at pH 1.5 was used as the eluent for the SMB system as indicated at 10 on FIG. 2.
- step is herein defined as the subset of operation wherein the feedstock is introduced (e.g., injected) into a single column (e.g., 1-6) upon which at the end of the “step” the configuration of valves advances such that material is introduced into the next downstream column within the recirculation loop L.
- the SMB separation of the SMB system was operated such that each step was divided into two subperiods as described in US5102553, the disclosure of which is incorporated by reference herein.
- the first sub-period encompassed a span of time where the feedstock and eluent were injected into distinct columns within the recirculation loop (for example, as shown at column 1 and 4, respectively).
- extract and raffinate fractions were also withdrawn from the SMB separator at defined points (for example, as shown between columns 2 and 3 and columns 4 and 5, respectively).
- the SMB separator was filled with Mitsubishi UBK- 522M strong acid cation resin in the potassium form.
- the SMB separator was loaded at approximately 45.9 lbs. dissolved solids per cubic foot resin per day (approximately 736 kilograms dissolved solids per cubic meter resin per day).
- the total resin volume for this experiment was 0.65 cubic feet (18.5 liters) distributed amongst 6 columns.
- Table 1 The product and by-product stream produced by the SMB chromatography system and the associated operating parameters of the system are listed in Table 1 below.
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Abstract
La divulgation concerne des systèmes et des procédés pour enrichir un acide organique d'un bouillon de fermentation contenant une couleur, des sels et des hydrates de carbone résiduel à l'aide d'une chromatographie sur lit mobile simulé ("SMB") pour produire un extrait d'acide organique de haute pureté. Un mode de réalisation du procédé purifie l'acide citrique d'un bouillon de fermentation en deux flux de produit : un premier flux de produit riche en impuretés de sel, de couleur et d'hydrates de carbone, et un second flux de produit comprenant un extrait enrichi en acide organique.
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US18/499,697 | 2023-11-01 | ||
US18/499,697 US20240140899A1 (en) | 2022-11-02 | 2023-11-01 | Smb separator for organic acid purification using a strong acid cation resin |
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