EP2571964A4 - Biodégradation de mélanges de combustibles hydrocarbonés renouvelables - Google Patents

Biodégradation de mélanges de combustibles hydrocarbonés renouvelables

Info

Publication number
EP2571964A4
EP2571964A4 EP11784330.0A EP11784330A EP2571964A4 EP 2571964 A4 EP2571964 A4 EP 2571964A4 EP 11784330 A EP11784330 A EP 11784330A EP 2571964 A4 EP2571964 A4 EP 2571964A4
Authority
EP
European Patent Office
Prior art keywords
biodegradation
hydrocarbon fuel
fuel blends
renewable hydrocarbon
renewable
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP11784330.0A
Other languages
German (de)
English (en)
Other versions
EP2571964A2 (fr
Inventor
Michael Robert Foster
John Thomas Gannon
David Teh-Wei Tsao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Butamax Advanced Biofuels LLC
Original Assignee
Butamax Advanced Biofuels LLC
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
Application filed by Butamax Advanced Biofuels LLC filed Critical Butamax Advanced Biofuels LLC
Publication of EP2571964A2 publication Critical patent/EP2571964A2/fr
Publication of EP2571964A4 publication Critical patent/EP2571964A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/18Organic compounds containing oxygen
    • C10L1/182Organic compounds containing oxygen containing hydroxy groups; Salts thereof
    • C10L1/1822Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms
    • C10L1/1824Organic compounds containing oxygen containing hydroxy groups; Salts thereof hydroxy group directly attached to (cyclo)aliphatic carbon atoms mono-hydroxy
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/14Organic compounds
    • C10L1/18Organic compounds containing oxygen
    • C10L1/182Organic compounds containing oxygen containing hydroxy groups; Salts thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/08Reclamation of contaminated soil chemically
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/04Liquid carbonaceous fuels essentially based on blends of hydrocarbons
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00Use of additives to fuels or fires for particular purposes
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20Bacteria; Culture media therefor
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/26Processes using, or culture media containing, hydrocarbons
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/32Processes using, or culture media containing, lower alkanols, i.e. C1 to C6
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00Preparation of oxygen-containing organic compounds
    • C12P7/02Preparation of oxygen-containing organic compounds containing a hydroxy group
    • C12P7/04Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
    • C12P7/16Butanols
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/12Inorganic compounds
    • C10L1/1216Inorganic compounds metal compounds, e.g. hydrides, carbides
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/12Inorganic compounds
    • C10L1/1266Inorganic compounds nitrogen containing compounds, (e.g. NH3)
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00Liquid carbonaceous fuels
    • C10L1/10Liquid carbonaceous fuels containing additives
    • C10L1/12Inorganic compounds
    • C10L1/1275Inorganic compounds sulfur, tellurium, selenium containing compounds
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Genetics & Genomics (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Biomedical Technology (AREA)
  • Virology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Emergency Medicine (AREA)
  • Combustion & Propulsion (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
EP11784330.0A 2010-05-21 2011-05-20 Biodégradation de mélanges de combustibles hydrocarbonés renouvelables Withdrawn EP2571964A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34712710P 2010-05-21 2010-05-21
PCT/US2011/037360 WO2011146849A2 (fr) 2010-05-21 2011-05-20 Biodégradation de mélanges de combustibles hydrocarbonés renouvelables

Publications (2)

Publication Number Publication Date
EP2571964A2 EP2571964A2 (fr) 2013-03-27
EP2571964A4 true EP2571964A4 (fr) 2014-03-19

Family

ID=44971251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11784330.0A Withdrawn EP2571964A4 (fr) 2010-05-21 2011-05-20 Biodégradation de mélanges de combustibles hydrocarbonés renouvelables

Country Status (11)

Country Link
US (1) US20110283604A1 (fr)
EP (1) EP2571964A4 (fr)
JP (1) JP2013529242A (fr)
KR (1) KR20130121696A (fr)
CN (1) CN102906234A (fr)
AU (1) AU2011255275A1 (fr)
BR (1) BR112012029362A2 (fr)
CA (1) CA2797555A1 (fr)
MX (1) MX2012013379A (fr)
NZ (1) NZ602828A (fr)
WO (1) WO2011146849A2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006081089A1 (fr) * 2005-01-25 2006-08-03 Bp Corporation North America Inc. Composition d'essence oxygenee a pression de vapeur reid (rvp) reduite et procede
US7426960B2 (en) 2005-05-03 2008-09-23 Luca Technologies, Inc. Biogenic fuel gas generation in geologic hydrocarbon deposits
US8734543B2 (en) 2008-05-08 2014-05-27 Butamax Advanced Biofuels Llc Oxygenated gasoline composition having good driveability performance
US10192038B2 (en) 2008-05-22 2019-01-29 Butamax Advanced Biofuels Llc Process for determining the distillation characteristics of a liquid petroleum product containing an azeotropic mixture
CA2801062C (fr) 2010-06-16 2019-04-02 Butamax(Tm) Advanced Biofuels Llc Composition d'essence oxygenee a base de butanol offrant de bonnes performances de manipulation
MX2012014538A (es) 2010-06-16 2013-02-07 Butamax Tm Advanced Biofuels Composicion de gasolina y butanol oxigenados que tienen un buen desempeño de capacidad de conduccion.
JP2013541003A (ja) 2010-09-20 2013-11-07 ビュータマックス・アドバンスド・バイオフューエルズ・エルエルシー ブタノール含有燃料のマルチメディア評価
US8356678B2 (en) * 2010-10-29 2013-01-22 Racional Energy & Environment Company Oil recovery method and apparatus
US8968429B2 (en) 2011-09-23 2015-03-03 Butamax Advanced Biofuels Llc Butanol compositions for fuel blending and methods for the production thereof
EP2758492A1 (fr) 2011-09-23 2014-07-30 Butamax Advanced Biofuels LLC Procédé pour la production d'essence en utilisant du butanol dans le stock d'essence
MX365334B (es) 2011-12-30 2019-05-30 Butamax Advanced Biofuels Llc Composiciones inhibidoras de la corrosion para gasolinas oxigenadas.
US9004162B2 (en) * 2012-03-23 2015-04-14 Transworld Technologies Inc. Methods of stimulating acetoclastic methanogenesis in subterranean deposits of carbonaceous material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497829A (zh) * 2008-02-01 2009-08-05 王皓冀 一种高效环保节能汽油添加剂

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4850745A (en) * 1988-06-17 1989-07-25 Sybron Chemicals, Inc. Bioremediation system
US5942117A (en) * 1992-08-04 1999-08-24 Yellowstone Environmental Science, Inc. Anaerobic biodegradation of unsaturated, saturated, aromatic and halogenated hydrocarbons
CA2221476A1 (fr) * 1997-11-18 1999-05-18 Laleh Yerushalmi Methode et systeme pour la biodegradation acceleree de l'eau contaminee aux hydrocarbures
US20040014196A1 (en) * 2002-02-21 2004-01-22 Southern Illinois University Biological anaerobic treatment of BTEX contamination
US20090199464A1 (en) * 2008-02-12 2009-08-13 Bp Corporation North America Inc. Reduced RVP Oxygenated Gasoline Composition And Method
WO2006099293A2 (fr) * 2005-03-11 2006-09-21 Mississippi State University Melange carburant/lubrifiant renouvelable pour moteur deux temps a combustion interne
WO2007004789A1 (fr) * 2005-07-01 2007-01-11 Pure Life Co Ltd Composition de carburant contenant du bioethanol et du biodiesel pour moteur a combustion interne
CN101250442A (zh) * 2008-03-07 2008-08-27 惠州国鼎能源科技有限公司 一种高标号环保无铅汽油及其制备方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497829A (zh) * 2008-02-01 2009-08-05 王皓冀 一种高效环保节能汽油添加剂

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 200956, Derwent World Patents Index; AN 2009-M57182, XP002719540 *
DOU ET AL: "Anaerobic BTEX biodegradation linked to nitrate and sulfate reduction", JOURNAL OF HAZARDOUS MATERIALS, ELSEVIER, AMSTERDAM, NL, vol. 151, no. 2-3, 1 February 2008 (2008-02-01), pages 720 - 729, XP022450965, ISSN: 0304-3894, DOI: 10.1016/J.JHAZMAT.2007.06.043 *
GOMEZ D E ET AL: "Comparing the effects of various fuel alcohols on the natural attenuation of Benzene Plumes using a general substrate interaction model", CONTAMINANT HYDROLOGY, ELSEVIER, AMSTERDAM, NL, vol. 113, no. 1-4, 1 April 2010 (2010-04-01), pages 66 - 76, XP026960663, ISSN: 0169-7722, [retrieved on 20100206] *

Also Published As

Publication number Publication date
EP2571964A2 (fr) 2013-03-27
US20110283604A1 (en) 2011-11-24
AU2011255275A1 (en) 2012-11-01
WO2011146849A2 (fr) 2011-11-24
KR20130121696A (ko) 2013-11-06
CN102906234A (zh) 2013-01-30
CA2797555A1 (fr) 2011-11-24
JP2013529242A (ja) 2013-07-18
BR112012029362A2 (pt) 2019-09-24
NZ602828A (en) 2014-06-27
MX2012013379A (es) 2013-02-11
WO2011146849A3 (fr) 2012-04-19

Similar Documents

Publication Publication Date Title
EP2571964A4 (fr) Biodégradation de mélanges de combustibles hydrocarbonés renouvelables
GB201003973D0 (en) Fuel compositions
GB201001920D0 (en) Fuel compostions
EP2584636A4 (fr) Pile à combustible
KR102165560B9 (ko) 핵연료 집합체
EP2549574A4 (fr) Pile à combustible
EG27102A (en) Solid fuel
GB2495061B (en) Fuel tank pipe structure
EP2619572A4 (fr) Évaluation multimédia de carburants contenant du butanol
EP2579376A4 (fr) Pile à combustible
EP2595226A4 (fr) Pile à combustible
EP2631976A4 (fr) Pile à combustible
EP2619439A4 (fr) Injecteur de carburant
EP2474598A4 (fr) Composition de carburant pour l'aviation
ZA201205282B (en) Solid fuel
EP2581975A4 (fr) Pile à combustible
EP2544289A4 (fr) Pile à combustible
EP2544283A4 (fr) Pile à combustible
GB201011006D0 (en) Fuel cell
EP2617801A4 (fr) Carburant solide
EP2617800A4 (fr) Combustible solide
EP2584637A4 (fr) Pile à combustible
EP2654113A4 (fr) Pile à combustible
EP2530771A4 (fr) Pile à combustible
EP2421946A4 (fr) Additif pour carburant

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20121204

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RIC1 Information provided on ipc code assigned before grant

Ipc: C10L 1/30 20060101ALI20140206BHEP

Ipc: C10L 1/182 20060101ALI20140206BHEP

Ipc: C10L 10/00 20060101ALI20140206BHEP

Ipc: C10L 1/12 20060101ALI20140206BHEP

Ipc: C10L 1/10 20060101AFI20140206BHEP

A4 Supplementary search report drawn up and despatched

Effective date: 20140213

17Q First examination report despatched

Effective date: 20160610

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20171031