GB825704A - Improvements in and relating to the biological water-retting of flax and other fibrous plants - Google Patents

Improvements in and relating to the biological water-retting of flax and other fibrous plants

Info

Publication number
GB825704A
GB825704A GB1580955A GB1580955A GB825704A GB 825704 A GB825704 A GB 825704A GB 1580955 A GB1580955 A GB 1580955A GB 1580955 A GB1580955 A GB 1580955A GB 825704 A GB825704 A GB 825704A
Authority
GB
United Kingdom
Prior art keywords
retting
liquor
aeration
sludge
volatile fatty
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.)
Expired
Application number
GB1580955A
Inventor
Leofric John Rhodes
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 to BE548249D priority Critical patent/BE548249A/xx
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB1580955A priority patent/GB825704A/en
Priority to FR1154491D priority patent/FR1154491A/en
Publication of GB825704A publication Critical patent/GB825704A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
    • D01C1/00—Treatment of vegetable material
    • D01C1/04—Bacteriological retting
    • 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
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Zoology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Textile Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Activated Sludge Processes (AREA)

Abstract

Retting liquor, which has been used for retting flax or other fibrous plants, is rendered suitable for use in a further retting operation by subjecting it to aeration whilst in admixture with activated sludge. During retting, volatile fatty acids (e.g. acetic acid) are formed in the liquor and these act as inhibitors of the retting process. However, these acids are destroyed during the aeration. The activated sludge may be produced by the aeration of used retting liquor, provided the volatile fatty acid content thereof is sufficiently low and, if necessary, the used liquor may be diluted, or subjected to a preliminary aeration, to bring the volatile fatty acid content to the desired low level. But the bacteria which produce the sludge become progressively tolerant of greater amounts of the acid, so that the volatile fatty acid content of the liquor may be gradually increased to the maximum concentration in which the bacteria can remain active. Diffused aeration may be employed in the preliminary aeration step, while the aeration in the presence of activated sludge may be effected with brush aerators which may be carried by rafts floating on the liquor. The sludge in the reconditioned liquor may be allowed to settle before the liquor is used in a further retting operation, but the settling period may be limited so that a predetermined quantity of sludge remains in suspension and thus passes to the retting tanks.
GB1580955A 1955-06-02 1955-06-02 Improvements in and relating to the biological water-retting of flax and other fibrous plants Expired GB825704A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE548249D BE548249A (en) 1955-06-02
GB1580955A GB825704A (en) 1955-06-02 1955-06-02 Improvements in and relating to the biological water-retting of flax and other fibrous plants
FR1154491D FR1154491A (en) 1955-06-02 1956-05-29 Flax retting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1580955A GB825704A (en) 1955-06-02 1955-06-02 Improvements in and relating to the biological water-retting of flax and other fibrous plants

Publications (1)

Publication Number Publication Date
GB825704A true GB825704A (en) 1959-12-23

Family

ID=10065876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1580955A Expired GB825704A (en) 1955-06-02 1955-06-02 Improvements in and relating to the biological water-retting of flax and other fibrous plants

Country Status (3)

Country Link
BE (1) BE548249A (en)
FR (1) FR1154491A (en)
GB (1) GB825704A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1425440A1 (en) * 2001-07-10 2004-06-09 Fibre Laboratory Pty Ltd. Degumming of bast fibres
WO2006100560A1 (en) 2005-03-21 2006-09-28 Gruppo Fibranova S.R.L. Process and system for retting plant fibre for textile use
WO2009109994A1 (en) * 2008-03-05 2009-09-11 Council Of Scientific & Industrial Research A method for anaerobic process coupled separation and refining of plant materials
WO2017105336A1 (en) * 2015-12-18 2017-06-22 Ikea Supply Ag Cottonization by biodigestion of fibrous biomass

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1425440A1 (en) * 2001-07-10 2004-06-09 Fibre Laboratory Pty Ltd. Degumming of bast fibres
EP1425440A4 (en) * 2001-07-10 2005-08-17 Fibre Lab Pty Ltd Degumming of bast fibres
WO2006100560A1 (en) 2005-03-21 2006-09-28 Gruppo Fibranova S.R.L. Process and system for retting plant fibre for textile use
WO2009109994A1 (en) * 2008-03-05 2009-09-11 Council Of Scientific & Industrial Research A method for anaerobic process coupled separation and refining of plant materials
WO2017105336A1 (en) * 2015-12-18 2017-06-22 Ikea Supply Ag Cottonization by biodigestion of fibrous biomass
WO2017103092A2 (en) 2015-12-18 2017-06-22 Ikea Supply Ag Cottonization by biodigestion of packed fibrous biomass

Also Published As

Publication number Publication date
BE548249A (en)
FR1154491A (en) 1958-04-10

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