NO960082L - Fremgangsmåte for å fjerne metallioner fra væske - Google Patents

Fremgangsmåte for å fjerne metallioner fra væske

Info

Publication number
NO960082L
NO960082L NO960082A NO960082A NO960082L NO 960082 L NO960082 L NO 960082L NO 960082 A NO960082 A NO 960082A NO 960082 A NO960082 A NO 960082A NO 960082 L NO960082 L NO 960082L
Authority
NO
Norway
Prior art keywords
cellulose
liquid
separation
metal ions
cellulose material
Prior art date
Application number
NO960082A
Other languages
English (en)
Other versions
NO960082D0 (no
Inventor
Robert J Michalowski
Steven H Christiansen
R Keith Frank
Teresa Littleton
Jaime Simon
Walter Vaughn
David A Wilson
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of NO960082D0 publication Critical patent/NO960082D0/no
Publication of NO960082L publication Critical patent/NO960082L/no

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents

Abstract

Oppfinnelsen er en forbedring i en fremgangsmåte for fremstilling av cellulosegjenstander, idet fremgangsmåten omfatter separasjon av cellulose- materiale fra en blanding som inneholder en væske, metallkationer og cellulose- materiale. Forbedringen omfatter at det til blandingen tilsettes minst ett til- bakeholdingsmateriale som binder minst ett metallkation og som ved separasjonen holdes tilbake i cellulosematerialet. Egnede tilbakeholdingsmidler er enten organiske eller uorganiske og inkluderer chelatdannende polymerer, både synte- tiske og naturlige, kolloidale suspen- sjoner av uorganiske forbindelser, og blandede metallhydroksyder. I hvert tilfelle forblir metallkationene i cellulosegjenstanden, som for eksempel kan være papir, i stedet for å gå inn i avløpsvannet fra hvilket det ellers ville være nødvendig å fjerne dem.
NO960082A 1993-07-09 1996-01-08 Fremgangsmåte for å fjerne metallioner fra væske NO960082L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/089,354 US5447603A (en) 1993-07-09 1993-07-09 Process for removing metal ions from liquids
PCT/US1994/007428 WO1995002086A2 (en) 1993-07-09 1994-06-30 Process for removing metal ions from liquids

Publications (2)

Publication Number Publication Date
NO960082D0 NO960082D0 (no) 1996-01-08
NO960082L true NO960082L (no) 1996-03-08

Family

ID=22217208

Family Applications (1)

Application Number Title Priority Date Filing Date
NO960082A NO960082L (no) 1993-07-09 1996-01-08 Fremgangsmåte for å fjerne metallioner fra væske

Country Status (9)

Country Link
US (1) US5447603A (no)
EP (1) EP0707671A1 (no)
JP (1) JPH08512365A (no)
AU (1) AU1198195A (no)
BR (1) BR9406950A (no)
CA (1) CA2166491A1 (no)
FI (1) FI960086A (no)
NO (1) NO960082L (no)
WO (1) WO1995002086A2 (no)

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AT515174B1 (de) 2013-10-15 2019-05-15 Chemiefaser Lenzing Ag Cellulosesuspension, Verfahren zu ihrer Herstellung und Verwendung
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Also Published As

Publication number Publication date
US5447603A (en) 1995-09-05
EP0707671A1 (en) 1996-04-24
CA2166491A1 (en) 1995-01-19
BR9406950A (pt) 1996-08-06
FI960086A0 (fi) 1996-01-08
FI960086A (fi) 1996-03-06
AU1198195A (en) 1995-02-06
NO960082D0 (no) 1996-01-08
WO1995002086A2 (en) 1995-01-19
JPH08512365A (ja) 1996-12-24
WO1995002086A3 (en) 1995-03-09

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