AR000310A1 - Method for producing lactic acid from municipal solid waste - Google Patents

Method for producing lactic acid from municipal solid waste

Info

Publication number
AR000310A1
AR000310A1 AR33454995A AR33454995A AR000310A1 AR 000310 A1 AR000310 A1 AR 000310A1 AR 33454995 A AR33454995 A AR 33454995A AR 33454995 A AR33454995 A AR 33454995A AR 000310 A1 AR000310 A1 AR 000310A1
Authority
AR
Argentina
Prior art keywords
lactic acid
solid waste
solution
sugar
municipal solid
Prior art date
Application number
AR33454995A
Other languages
Spanish (es)
Original Assignee
Controlled Environment Syst
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/422,529 external-priority patent/US5506123A/en
Application filed by Controlled Environment Syst filed Critical Controlled Environment Syst
Publication of AR000310A1 publication Critical patent/AR000310A1/en

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes

Landscapes

  • Processing Of Solid Wastes (AREA)

Abstract

Un método para producir ácido láctico a partir de desechos sólidos municipales, caracterizado por las siguientes etapas: (a) triturar loscomponentes celulósicos de desechos sólidos municipales; (b) hidrolizar con ácido el componente celulósico en la etapa (a) para obtener un componentesoluble y un componente insoluble; (c) separar los componentes soluble e insoluble obtenidos en la etapa (b); (d) separar el componente soluble obtenidOen la etapa (c) en una solución que contiene ácido y una solución que contiene azúcar; (e) concentrar la solución que contiene azúcar a aproximadamente 1-20%de azúcar; (f) ajustar el pH de la solución concentrada que contiene azúcar obtenida en la etapa (e) a aproximadamente 4,5 a 7,5;(g) fermentar conbacterias ácido lácticas la solución obtenida en la etapa (f) a aproximadamente 25 a aproximadamente 40°C para dar una solución que contiene ácido láctico; (h)eliminar las bacterias ácido lácticas a partir de la solución obtenida enla etapa (g); (i) procesar la solución obtenida en la etapa (h) para obtener unaforma comercialmente aceptable de ácido láctico; (j) secar el componente insoluble obtenido en la etapa (c); y (k) quemar el componente insoluble secoobtenido en la etapa (j) como combustible de caldera para producir energía.A method of producing lactic acid from municipal solid waste, characterized by the following stages: (a) crushing cellulosic components of municipal solid waste; (b) acid hydrolyzing the cellulosic component in step (a) to obtain a soluble component and an insoluble component; (c) separating the soluble and insoluble components obtained in step (b); (d) separating the soluble component obtained in step (c) into an acid-containing solution and a sugar-containing solution; (e) concentrating the sugar-containing solution to about 1-20% sugar; (f) adjust the pH of the concentrated sugar-containing solution obtained in step (e) to approximately 4.5 to 7.5; (g) ferment the solution obtained in step (f) with lactic acid bacteria to approximately 25 to about 40 ° C to give a solution containing lactic acid; (h) removing lactic acid bacteria from the solution obtained in step (g); (i) processing the solution obtained in step (h) to obtain a commercially acceptable form of lactic acid; (j) drying the insoluble component obtained in step (c); and (k) burning the dry insoluble component obtained in step (j) as boiler fuel to produce energy.

AR33454995A 1995-04-14 1995-12-07 Method for producing lactic acid from municipal solid waste AR000310A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/422,529 US5506123A (en) 1994-12-07 1995-04-14 Municipal solid waste processing facility and commercial lactic acid production process

Publications (1)

Publication Number Publication Date
AR000310A1 true AR000310A1 (en) 1997-06-18

Family

ID=32108159

Family Applications (1)

Application Number Title Priority Date Filing Date
AR33454995A AR000310A1 (en) 1995-04-14 1995-12-07 Method for producing lactic acid from municipal solid waste

Country Status (2)

Country Link
AR (1) AR000310A1 (en)
IN (1) IN188991B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115121279A (en) * 2021-03-25 2022-09-30 河南省高新技术实业有限公司 Solid catalyst, preparation method and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115121279A (en) * 2021-03-25 2022-09-30 河南省高新技术实业有限公司 Solid catalyst, preparation method and application thereof

Also Published As

Publication number Publication date
IN188991B (en) 2002-12-07

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