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WO2010008262A1 - Procédé d'élimination de composés de type sulfure dans des eaux sulfureuses - Google Patents

Procédé d'élimination de composés de type sulfure dans des eaux sulfureuses Download PDF

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Publication number
WO2010008262A1
WO2010008262A1 PCT/MX2008/000088 MX2008000088W WO2010008262A1 WO 2010008262 A1 WO2010008262 A1 WO 2010008262A1 MX 2008000088 W MX2008000088 W MX 2008000088W WO 2010008262 A1 WO2010008262 A1 WO 2010008262A1
Authority
WO
WIPO (PCT)
Prior art keywords
product obtained
hydrotalcite
solution
water
sulfate
Prior art date
Application number
PCT/MX2008/000088
Other languages
English (en)
Spanish (es)
Inventor
Genoveva Rosano Ortega
Garcia Prudencio Fidel Pacheco
Original Assignee
Universidad Popular Autónoma Del Estado De Puebla, A. C.
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 Universidad Popular Autónoma Del Estado De Puebla, A. C. filed Critical Universidad Popular Autónoma Del Estado De Puebla, A. C.
Priority to PCT/MX2008/000088 priority Critical patent/WO2010008262A1/fr
Priority to MX2009011353A priority patent/MX2009011353A/es
Publication of WO2010008262A1 publication Critical patent/WO2010008262A1/fr

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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F2101/101—Sulfur compounds
    • 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
    • C02F2101/103—Arsenic compounds
    • 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
    • C02F2101/106—Selenium compounds
    • 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
    • C02F2101/108—Boron compounds
    • 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
    • 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
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/36—Organic compounds containing halogen

Definitions

  • the present invention relates to a process for the removal of sulfide type compounds in sulphurous waters, and a method of purification of sulphurous waters.
  • Hydrotalcites are double-layered hydroxides with the general formula: [Mg 6 Al 2 (OH) I6 ] CO 3 nH 2 O.
  • the structure of the hydrotalcite is similar to that of brucite, Mg (OH) 2 , in which Magnesium is octahedrally coordinated to six hydroxyl groups. These octahedra, by sharing their edges (edges), form two-dimensional sheets.
  • Mg 2+ cations are replaced by Al 3+
  • hydrotalcite is formed and the laminar array acquires a positive residual charge.
  • an anion that resides in the interlaminar zone along with water molecules is required.
  • the positive charge is compensated by CO3 2 "
  • hydrotalcite type compounds will decompose in an appreciable manner under heating and that, if the heating does not exceed certain levels below the temperatures discussed, the resulting decomposed materials can be rehydrated (and, optionally, resupplied with several anions, for example CO3, which were removed during the heating process) and thus reproduce the original hydrotalcite compound, or a very similar one.
  • the decomposition products of said heating hydrotalcite type compounds "collapsed", or "metastable". However, if those collapsed or metastable materials are heated beyond certain temperatures (for example 900 0 C), then the decomposition products resulting from such hydrotalcite type compounds cannot be hydrated and therefore are not capable of forming the original hydrotalcite type compound.
  • hydrotalcite-forming ingredients for example, compositions containing magnesium and compositions containing aluminum
  • certain prescribed conditions for example, certain time ranges, pH conditions, temperatures, etc.
  • the resulting materials or mixture will exhibit various catalytic properties. Therefore, many production processes are based on fine points of time, temperature, pH conditions in order to obtain maximum quantities of a given type of precipitated hydrotalcite type product.
  • the mixture or precipitated products of such initial chemical reactions have also been heat treated to obtain various collapsed hydrotalcite materials having specific catalytic properties.
  • Such materials have been used, for example, as sorbents (especially SO x sorbents for catalytic fluid and hydrocarbon cracking processes), hydrocarbon cracking catalysts, catalytic linkers, anion exchangers, acid waste collectors, and stabilizers of polymers.
  • hydrotalcite-type compounds usually involve precipitation or drying of a mixture of a hydrotalcite-type product, washing, and optionally, heat treatment of the resulting dry mix. Once done, the type compounds Hydrotalcite, or its thermal decomposition products, have been used as catalysts.
  • the present invention describes a method for the removal of sulfide-type compounds in sulphurous waters, and a method of purification of sulphurous water removal from the synthesis of a hydrotalcite-like compound using as a raw material a sulfate-based composition of aluminum, ferric sulfate, calcium sulfate, magnesium sulfate, and colloidal silica.
  • a method for the synthesis of a hydrotalcite-like compound is provided.
  • a hydrotalcite type compound is provided.
  • a method for the removal of sulfide type compounds in sulphurous waters there is provided a method for the removal of sulfide type compounds in sulphurous waters.
  • a method of purification of sulphurous waters is provided.
  • methods for the synthesis of hydrotalcite-type compounds useful for the anion sorption are provided.
  • hydrotalcite compounds useful for anion sorption are provided.
  • a seventh aspect of the present invention methods for removing anions from a mixture are provided.
  • FIG. 1 Diffractogram of the hydrotalcite type compound, using JCPDS 14-0191 (stars) as the reference standard.
  • the present invention may be adapted by making the pertinent modifications widely known in the state of the art, to take advantage of the hydrotalcite compounds of the present invention in technologies for immobilization of hazardous substances in wastewater, such as arsenic, halides, boron, selenium, chromium ions nitrites
  • the present invention may be adapted by making modifications widely known in the state of the art, to take advantage of the hydrotalcite type compounds of the present invention in technologies for reducing sulfur and nitrogen content in fuels such as gasoline and diesel.
  • the present invention may be adapted by making the modifications widely known in the state of the art, to take advantage of the hydrotalcite type compounds of the present invention in technologies for reducing the emission of SO x and NO x in gas mixtures.
  • Example 1 Synthesis of Hydrotalcite type compound
  • a composition containing aluminum sulfate (9.7 g / L), ferric sulfate (4.7 g / L), calcium sulfate (2.3 g / L), sodium sulfate were added magnesium (20.0 g / L), colloidal silica (0.3 g / L), and density of 1.1 g / cm 3 at proposed temperatures of 25, 45 or 65 ° C. Based on the molar concentrations of Mg and Al that were proposed to be synthesized, calculations were performed to determine the amount of
  • Mg (OH) 2 was gradually added as a 20% solids suspension and verified the pH of the solution.
  • the mixture was kept under continuous stirring using a Heidolph R2R stirrer, model 2051 electronic with Pendrahulic blades, for an approximate time of 5 minutes at a moderate speed (600-800 rpm) that allowed to maintain the homogeneous mixture. 20% NaOH solids were added until a pH of 7 was reached. The pH of the solution was monitored constantly. The suspension was always kept under stirring to allow proper mixing. Once the pH was adjusted, 400 milliliters of Na 2 C 3 solution from 3.2, 15, 20, or 32% was added and the mixture was allowed to homogenize.
  • the elemental and morphological composition of said hydrotalcite-like compound was determined by scanning electron microscopy using a low vacuum scanning electron microscope (JEOL 5900 LV brand) with probe for elemental analysis.
  • the preparation of the standard solution was prepared as follows: 5g of Na 2 SO 4 was dried in an oven at OO ⁇ 5 ° C, for at least two hours; subsequently, he retired from The stove is reagent and placed in a desiccator for 30 min or the time required for it to reach constant weight. To prepare a standard solution with 800mg SO 4 2 " L " 1 , 1.18 g of dry Na 2 SO 4 was weighed, which in a volumetric IL flask was dissolved in approximately 500 ml of tristylated water and made up to brand. The pH of the solution was determined and espectrofotomet ⁇ 'UV-Vis concentration of sulfate ions, in order to verify.
  • the parameters to be determined were: SO 4 2 " by spectrophotometry, and total hardness by the volumetric method with EDTA. In principle, the concentration of these parameters was monitored throughout the development of the sorption tests in" bat "in order to study and evaluate the use of hydrotalcites in the treatment of sulphurous water.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

La présente invention concerne un procédé de synthèse de composés de type hydrotalcite, des composés de type hydrotalcite, un procédé d'élimination dans l'eau de composés de type sulfures à l'aide de composés de type hydrotalcite, des procédés d'élimination d'anions en solution. La présente invention est d'une extrême utilité pour les technologies relatives au traitement de l'eau pour la rendre potable ainsi qu'à l'élimination de substances dangereuses.
PCT/MX2008/000088 2008-07-14 2008-07-14 Procédé d'élimination de composés de type sulfure dans des eaux sulfureuses WO2010008262A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/MX2008/000088 WO2010008262A1 (fr) 2008-07-14 2008-07-14 Procédé d'élimination de composés de type sulfure dans des eaux sulfureuses
MX2009011353A MX2009011353A (es) 2008-07-14 2009-10-21 Proceso para la remoción de compuestos tipo sulfuro en aguas sulfurosas.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/MX2008/000088 WO2010008262A1 (fr) 2008-07-14 2008-07-14 Procédé d'élimination de composés de type sulfure dans des eaux sulfureuses

Publications (1)

Publication Number Publication Date
WO2010008262A1 true WO2010008262A1 (fr) 2010-01-21

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Country Status (1)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5114898A (en) * 1990-01-18 1992-05-19 Board Of Trustees Operating Michigan State University Layered double hydroxide sorbents for the removal of SOx from flue gas and other gas streams
US6171991B1 (en) * 1998-02-11 2001-01-09 Akzo Nobel Nv Process for producing an anionic clay-containing composition
MXPA03007376A (es) * 2003-08-18 2004-10-15 Univ Popular Autonoma Del Esta Proceso de tratamiento para agua sulfurosa mediante hidrotalcitas.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5114898A (en) * 1990-01-18 1992-05-19 Board Of Trustees Operating Michigan State University Layered double hydroxide sorbents for the removal of SOx from flue gas and other gas streams
US6171991B1 (en) * 1998-02-11 2001-01-09 Akzo Nobel Nv Process for producing an anionic clay-containing composition
MXPA03007376A (es) * 2003-08-18 2004-10-15 Univ Popular Autonoma Del Esta Proceso de tratamiento para agua sulfurosa mediante hidrotalcitas.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DAS, J. ET AL.: "Adsorption of phosphate by layered double hydroxides in aqueous solutions", APPLIED CLAY SCIENCE, vol. 32, 23 March 2006 (2006-03-23), pages 252 - 260 *

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