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WO2006103713A3 - Use of chromiferous tanning waste for obtaining a chromium-oxide based product, mainly directed to the ceramic industry - Google Patents

Use of chromiferous tanning waste for obtaining a chromium-oxide based product, mainly directed to the ceramic industry Download PDF

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Publication number
WO2006103713A3
WO2006103713A3 PCT/IT2006/000204 IT2006000204W WO2006103713A3 WO 2006103713 A3 WO2006103713 A3 WO 2006103713A3 IT 2006000204 W IT2006000204 W IT 2006000204W WO 2006103713 A3 WO2006103713 A3 WO 2006103713A3
Authority
WO
WIPO (PCT)
Prior art keywords
chromium
solid
based product
oxide based
chromiferous
Prior art date
Application number
PCT/IT2006/000204
Other languages
French (fr)
Other versions
WO2006103713A2 (en
Inventor
Leonardo Regoli
Luca Lemmi
Original Assignee
Leonardo Regoli
Luca Lemmi
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 Leonardo Regoli, Luca Lemmi filed Critical Leonardo Regoli
Publication of WO2006103713A2 publication Critical patent/WO2006103713A2/en
Publication of WO2006103713A3 publication Critical patent/WO2006103713A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C01G37/033—Chromium trioxide; Chromic acid
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
    • C02F2103/24—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof from tanneries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Glass Compositions (AREA)

Abstract

The invention concerns the use of tanning bath waste to obtain a chromium- oxide based product for use in other industrial fields and in particular in the ceramics field, refractory materials field, and for use in pigments for glass and colorants for metallic foil. For this purpose, it is possible to use a process wherein the precipitation of a solid is induced using a reactive precipitant, the process further comprising the steps of solid/liquid separation, washing, a successive solid/liquid separation, and a drying action. If necessary, the solid can also be heated to separate residual organic impurities.
PCT/IT2006/000204 2005-04-01 2006-03-30 Use of chromiferous tanning waste for obtaining a chromium-oxide based product, mainly directed to the ceramic industry WO2006103713A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPI20050035 ITPI20050035A1 (en) 2005-04-01 2005-04-01 PROCEDURE FOR THE SYNTHESIS OF A CHROMIUM OXIDE CONCENTRATE OBTAINED FROM THE BATHROOM FLOAT OF CHROMIUM TANNING AND PRINCIPALLY USABLE AS MATTERS BEFORE THE CERAMIC INDUSTRY
ITPI2005A000035 2005-04-01

Publications (2)

Publication Number Publication Date
WO2006103713A2 WO2006103713A2 (en) 2006-10-05
WO2006103713A3 true WO2006103713A3 (en) 2006-12-07

Family

ID=36952428

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2006/000204 WO2006103713A2 (en) 2005-04-01 2006-03-30 Use of chromiferous tanning waste for obtaining a chromium-oxide based product, mainly directed to the ceramic industry

Country Status (2)

Country Link
IT (1) ITPI20050035A1 (en)
WO (1) WO2006103713A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014199193A1 (en) 2013-06-10 2014-12-18 Trivalent Chrome Cc Production of chromium oxide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE426081C (en) * 1922-10-19 1926-03-05 Georges Croulard Process for the recovery of chromium from waste water or lye containing chromate or bichromate
US2110187A (en) * 1933-08-23 1938-03-08 Dudley A Willams Method of treating chrome liquors
US4108596A (en) * 1975-07-11 1978-08-22 Revere Copper And Brass, Incorporated Recovery of chromium values from waste streams by the use of alkaline magnesium compounds
US4401573A (en) * 1980-05-12 1983-08-30 Luigi Stoppani S.P.A. Continuous process for the removal of chromium from waste waters and valorization of the recovered chromium
US4569830A (en) * 1982-12-30 1986-02-11 Giovanni Tibaldi Method and plant to recover chromium salts from tannery reflux water

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE426081C (en) * 1922-10-19 1926-03-05 Georges Croulard Process for the recovery of chromium from waste water or lye containing chromate or bichromate
US2110187A (en) * 1933-08-23 1938-03-08 Dudley A Willams Method of treating chrome liquors
US4108596A (en) * 1975-07-11 1978-08-22 Revere Copper And Brass, Incorporated Recovery of chromium values from waste streams by the use of alkaline magnesium compounds
US4401573A (en) * 1980-05-12 1983-08-30 Luigi Stoppani S.P.A. Continuous process for the removal of chromium from waste waters and valorization of the recovered chromium
US4569830A (en) * 1982-12-30 1986-02-11 Giovanni Tibaldi Method and plant to recover chromium salts from tannery reflux water

Also Published As

Publication number Publication date
ITPI20050035A1 (en) 2006-10-02
WO2006103713A2 (en) 2006-10-05

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