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GR1005326B - Electrochemical method of nitrate of nitrite ions removal from aqueous solutions via their conversion to nitrogen - Google Patents

Electrochemical method of nitrate of nitrite ions removal from aqueous solutions via their conversion to nitrogen

Info

Publication number
GR1005326B
GR1005326B GR20060100042A GR20060100042A GR1005326B GR 1005326 B GR1005326 B GR 1005326B GR 20060100042 A GR20060100042 A GR 20060100042A GR 20060100042 A GR20060100042 A GR 20060100042A GR 1005326 B GR1005326 B GR 1005326B
Authority
GR
Greece
Prior art keywords
nitrate
nitrogen
electrochemical method
conversion
aqueous solutions
Prior art date
Application number
GR20060100042A
Other languages
Greek (el)
Inventor
Γεωργιος Κυριακου
Ιωαννης Κατσουναρος
Χρηστος Πολατιδης
Δημητριος Ιψακης
Original Assignee
Γεωργιος Κυριακου
Ιωαννης Κατσουναρος
Χρηστος Πολατιδης
Δημητριος Ιψακης
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 Γεωργιος Κυριακου, Ιωαννης Κατσουναρος, Χρηστος Πολατιδης, Δημητριος Ιψακης filed Critical Γεωργιος Κυριακου
Priority to GR20060100042A priority Critical patent/GR1005326B/en
Publication of GR1005326B publication Critical patent/GR1005326B/en

Links

Classifications

    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4676—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electroreduction
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46133—Electrodes characterised by the material
    • 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
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • 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
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/163—Nitrates
    • 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
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/166—Nitrites
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/46115—Electrolytic cell with membranes or diaphragms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

An electrochemical method having both high-rate conversion of nitrate ions and high selectivity of nitrogen production (about 90 per cent), which is based on the use of a tin cathode at high cathodic potential (-2.5 V vs. Ag/AgCl) is presented. Thismethod is effective in any nitrate concentration, as well as in any concentration of chloride or carbonate/bicarbonate ions. The final concentration of both nitrate and nitrite is under the maximum contaminant level (MCL) in drinking water. The method can be applied for the reduction of nitrite, as well.
GR20060100042A 2006-01-23 2006-01-23 Electrochemical method of nitrate of nitrite ions removal from aqueous solutions via their conversion to nitrogen GR1005326B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR20060100042A GR1005326B (en) 2006-01-23 2006-01-23 Electrochemical method of nitrate of nitrite ions removal from aqueous solutions via their conversion to nitrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR20060100042A GR1005326B (en) 2006-01-23 2006-01-23 Electrochemical method of nitrate of nitrite ions removal from aqueous solutions via their conversion to nitrogen

Publications (1)

Publication Number Publication Date
GR1005326B true GR1005326B (en) 2006-10-18

Family

ID=36790819

Family Applications (1)

Application Number Title Priority Date Filing Date
GR20060100042A GR1005326B (en) 2006-01-23 2006-01-23 Electrochemical method of nitrate of nitrite ions removal from aqueous solutions via their conversion to nitrogen

Country Status (1)

Country Link
GR (1) GR1005326B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542657A (en) * 1968-04-16 1970-11-24 Hydronics Corp Electrolytic reduction of nitrate from solutions of alkali metal hydroxides
DE3838181A1 (en) * 1988-11-10 1990-05-23 Linde Ag Process and apparatus for removing nitrogen compounds from aqueous solutions
US5614078A (en) * 1995-06-01 1997-03-25 Upscale Technologies, Inc. Method and apparatus for removing nitrates from water
US6531050B1 (en) * 1999-03-24 2003-03-11 Ionex Limited Water purification process
EP1364914A1 (en) * 2001-02-26 2003-11-26 Sanyo Electric Co., Ltd. Method and system for treating nitrogen-containing compound

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542657A (en) * 1968-04-16 1970-11-24 Hydronics Corp Electrolytic reduction of nitrate from solutions of alkali metal hydroxides
DE3838181A1 (en) * 1988-11-10 1990-05-23 Linde Ag Process and apparatus for removing nitrogen compounds from aqueous solutions
US5614078A (en) * 1995-06-01 1997-03-25 Upscale Technologies, Inc. Method and apparatus for removing nitrates from water
US6531050B1 (en) * 1999-03-24 2003-03-11 Ionex Limited Water purification process
EP1364914A1 (en) * 2001-02-26 2003-11-26 Sanyo Electric Co., Ltd. Method and system for treating nitrogen-containing compound

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PEEL J W ET AL: "Electrocatalytic reduction of nitrate in water", WATER RESEARCH, ELSEVIER, AMSTERDAM, NL, vol. 37, no. 10, May 2003 (2003-05-01), pages 2512 - 2519, XP004421958, ISSN: 0043-1354 *

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