GB2327671A - Removal of volatile organic compounds - Google Patents

Removal of volatile organic compounds Download PDF

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Publication number
GB2327671A
GB2327671A GB9715863A GB9715863A GB2327671A GB 2327671 A GB2327671 A GB 2327671A GB 9715863 A GB9715863 A GB 9715863A GB 9715863 A GB9715863 A GB 9715863A GB 2327671 A GB2327671 A GB 2327671A
Authority
GB
United Kingdom
Prior art keywords
organic compounds
volatile organic
inorgano
clay
organo
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.)
Withdrawn
Application number
GB9715863A
Other versions
GB9715863D0 (en
Inventor
Robert Mcintyre Weir
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9715863A priority Critical patent/GB2327671A/en
Publication of GB9715863D0 publication Critical patent/GB9715863D0/en
Publication of GB2327671A publication Critical patent/GB2327671A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/12—Naturally occurring clays or bleaching earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • 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
    • 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
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Dispersion Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)

Abstract

A process for removing volatile organic compounds from a fluid comprises contacting the fluid with an organo or inorgano clay in a container. Preferably, the container is a filter bag and may include a closure device. The fluid is either air or a liquid.

Description

ENVIRONMENTAL CONTROL This inventIon atas to environmental control, and more particularly to Ine controi or volatile organis compounds in an air stream and in other situations.
It has been well established that organo/inorgano clays, such as those used, for example, in the treatment process operated under the name ENVIROTREAT (R.T.M.), react with a very wide variety of organic compounds which are found in contaminated land. The organo/inorgano clays react with volatile organic compounds through a number of complex chemical bonding processes. The various organic compounds react in different ways depending upon the structure thereof and the chemical groups from which they are constituted, but typical bonding processes will include Lewis acid/base bonding, Van der Waals reaction, Hydrogen bonding, transition metal ligand bonding and absorption due to hydrophobicity.
The present invention proposes to treat volatile organic compounds in airstreams and in liquids.
According to the present invention, there is provided a process for the treatment of volatile organic compounds in an airstream or in a liquid, the process comprising passing said airstream through, or subjecting said liquid to, a quan, .y of organo/inorgano clay in a container.
In a first embodiment of the invention, volatile organic compounds are removed from a waste airstream, such as, for example, from a process plant or factory which is generating the pollution, by subjecting said airstream to a quantity of organo/inorgano clay. The organo/inorgano clay will be located in a container,.more particularly a filter bag, the airstream being passed through said container so as to obtain an efficient mass transfer between the gaseous and solid phases.
The amount of clay, in powder form, used in a particular application and to achieve the desired absorption rate of the volatile organic compounds into the clay, will be dependent upon the type of pollutants being removed from the airstreams, the allowable pressure drop in the system, the required life span of the charge of organo/inorgano clay used, and the volume of the air stream.
A typical absorption rate is approximately 1:20, although, as will be appreciated, this will vary and will be totally dependent upon the pollutants being removed.
The reactions which occur between the organo/inorgaro clays) and volatile organic compounds are irreversible and the material created by the bonding processes is stable and inert. Thus, the material created can be safely disposed of in normal land-fill sites. It may even improve the quality of the site because the organo/inorgano clays are used in the treatment of contaminated land.
A second embodiment of the invention relates to the removal of volatile organic compounds from liquids and waste organic materials which are generated in the home and in other situations such as spent cooking fat, waste engine oil, washing liquids from painting processes and similar substances.
A quantity of organo/inorgano clay will be contained in a vessel such as a bucket or similar container, the bucket or other container being provided with a lid or other closure device to prevent the escape of fumes. The waste material(s) are poured into the vessel and will react with the organo/inorgano clay - as referred to above - to form a safe and stable material which can be disposed of in a normal disposal system.
The quantity of waste organic material which can be treated will be dependent upon the amount of the organo inorgano clay employed, the nature of the contaminants, and the size of the container.
Thus, the invention provides an effective and relatively inexpensive way of treating volatile organic compounds, not only in industrial situations but also in domestic situations, and in a way that the material can be safely disposed of after treatment.

Claims (7)

  1. Claim 1:
    A process for the treatment of volatile organic compounds in an airstream or liquid, the process comprising passing said airstream through, or subjecting said liquid to a quantity of organo/inorgano clay in a container.
  2. Claim 2: A process according to claim 1 for the removal of volatile organic compounds from an airstream wherein the organo/inorgano clay is located in a container so as to obtain an efficient mass transfer between the gaseous and solid phases.
  3. Claim 3: A process according to claims 1 -2 wherein the said container is preferentially a filter bag.
  4. Claim 4: A process according to claim 1 for the removal of volatile organic compounds from liquids and waste organic materials generated in the home and other situations.
  5. Claim 5: A process according to claims I and 4 wherein the organo/inorgano clay is located in a container provided with a lid or other closure device to prevent the escape of fumes.
  6. Claim 6: A process according to claims 1 -5 wherein the said organo/inorgano clay is a reactive organo/inorgano clay providing an effective media for irreversible bonding with volatile organic compounds which is stable and inert.
  7. 7. A method for removing volatile organic compounds from airstreams and liquids wherein the volatile organic compounds are contacted with a reactive organo / inorgano clay in an appropriate container, thereby providing an effective and relatively inexpensive way of treating said volatile organic compounds and in a way that the material can be safely disposed of after treatment.
    Claim 7: A method for removing volatile organic compounds from airstreams and liquids wherein the volatile organic compounds are contacted with a reactive organo/inorgano clay in an appropriate container, thereby providing an effective and relatively inexpensive way of treating said volatile organic compounds and in a way that the material can be safely disposed of after treatment.
    Amendments to the claims have been filed as follows 1. A process for the treatment of volatile organic compounds in an airstream or a liquid, the process comprising passing said airstream through, or subjecting said liquid to a quantity of organo / inorgano clay in a container wherein the said organo I inorgano clay is a reactive organo / inorgano clay providing an effective media for irreversible chemical bonding with volatile organic compounds.
    2. A process according to Claim 1 for the removal of volatile organic compounds from an airstream wherein the reactive organo I inorgano clay is located in a container so as to obtain an efficient mass transfer between the gaseous and solid phases.
    3. A process according to Claims 1 and 2 wherein the said container is preferentially a filter bag.
    4. A process according to Claim 1 for the removal of volatile organic compounds from liquids and waste organic materials generated in the home and other situations.
    5. A process according to Claims 1 and 4 wherein the reactive organo / inorgano clay is located in a container provided with a lid or other closure device to prevent the escape of fumes.
    6. A process according to Claims 1 - 5 wherein the treatment process utilising the reactive inorgano I organo clay produces a stable and inert material.
GB9715863A 1997-07-29 1997-07-29 Removal of volatile organic compounds Withdrawn GB2327671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9715863A GB2327671A (en) 1997-07-29 1997-07-29 Removal of volatile organic compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9715863A GB2327671A (en) 1997-07-29 1997-07-29 Removal of volatile organic compounds

Publications (2)

Publication Number Publication Date
GB9715863D0 GB9715863D0 (en) 1997-10-01
GB2327671A true GB2327671A (en) 1999-02-03

Family

ID=10816555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9715863A Withdrawn GB2327671A (en) 1997-07-29 1997-07-29 Removal of volatile organic compounds

Country Status (1)

Country Link
GB (1) GB2327671A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB866383A (en) * 1958-05-27 1961-04-26 Gas Council Improvements in or relating to selective sorption of organic vapours
WO1983001204A1 (en) * 1981-09-30 1983-04-14 Radian Corp Method of organic waste disposal
EP0117890A2 (en) * 1983-01-29 1984-09-12 Johannes Heyen Device for removing in particular oil pollution from water surfaces
GB2150548A (en) * 1983-12-01 1985-07-03 English Clays Lovering Pochin Adsorbent for separating organic compounds from water
EP0474386A2 (en) * 1990-08-31 1992-03-11 Stephen A. Boyd Method of removing hydrocarbon contaminants from air and water
WO1995003999A1 (en) * 1993-07-30 1995-02-09 University Of Delaware Selective adsorption of organic material from water by modified clays
EP0841089A1 (en) * 1996-11-04 1998-05-13 McLeod, Neil Modified organoclays

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB866383A (en) * 1958-05-27 1961-04-26 Gas Council Improvements in or relating to selective sorption of organic vapours
WO1983001204A1 (en) * 1981-09-30 1983-04-14 Radian Corp Method of organic waste disposal
EP0117890A2 (en) * 1983-01-29 1984-09-12 Johannes Heyen Device for removing in particular oil pollution from water surfaces
GB2150548A (en) * 1983-12-01 1985-07-03 English Clays Lovering Pochin Adsorbent for separating organic compounds from water
EP0474386A2 (en) * 1990-08-31 1992-03-11 Stephen A. Boyd Method of removing hydrocarbon contaminants from air and water
WO1995003999A1 (en) * 1993-07-30 1995-02-09 University Of Delaware Selective adsorption of organic material from water by modified clays
EP0841089A1 (en) * 1996-11-04 1998-05-13 McLeod, Neil Modified organoclays

Also Published As

Publication number Publication date
GB9715863D0 (en) 1997-10-01

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)