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(12) Patent Application: | (11) CA 2884187 |
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(54) English Title: | ON-SITE ACTIVATION OF SLUDGES, ORGANIC COMPOUNDS AND WASTEWATER FOR MICROBIAL DIGESTION USING PEROXODISULPHATE DERIVED FROM TOXIC SULFUR COMPOUNDS |
(54) French Title: | ACTIVATION SUR PLACE DE BOUES, COMPOSES ORGANIQUES ET EAUX USEES DESTINES A LA DIGESTION MICROBIENNE AU MOYEN DE PEROXODISULFATE DERIVE DE COMPOSES DE SOUFRE TOXIQUES |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | |
(74) Associate agent: | |
(45) Issued: | |
(22) Filed Date: | 2015-03-10 |
(41) Open to Public Inspection: | 2016-09-10 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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The Invention described herein is a method of chemically activating sludges,
wastewater containing organic compounds,
and other organic matter (generally referred to herein as "organics" unless it
is necessary to distinguish between them)
using a potent chemical oxidizer, peroxodisulfate ("persulfate", S2O8 2-),
typically derived from toxic sulfur-containing
gases, e.g. hydrogen sulfide or methyl mercaptan, or other sulfur compounds,
preferably on-site. The activation of
organics with persulfate can be accelerated through the use of heat, catalysts
(such a ferrous ion, Fe2+), radiation, or
ultraviolet light. The chemical activation Is controlled to limit the amount
of oxidation of the organics to a level sufficient
to accelerate subsequent microbial digestion, presumably Including chemical
disruption of cell walls, but significantly less
than the amount required to completely oxidize (mineralize) the organics
present. This moderate but sufficient level of
oxidation, will facilitate digestion of the remaining organics present but
limit the oxidation to less than the amount that
would eliminate or nearly eliminate the organics present, thus preventing them
being available for digestion. After
oxidative treatment with persulfate, the said organic compounds will contain a
greater proportion of oxidized groups,
such as carboxylic acids or alcohols, which will increase the water solubility
of the organic matter, rendering it more readily
digestible by microbial activity for subsequent biofuel production or other
useful processing. Sulfur-containing gases, such
as hydrogen sulfide and methyl mercaptan, can be converted to persulfate
directly at an organics processing site through
a variety of processes including combustion and electrochemical oxidation
together, or by electrochemistry alone,
preferably on a boron-doped diamond anode. The process can be applied to many
types of organic matter and wastes
Including cellulosic, lignocellulosic, and cellular residues for the
production of many types of biofuels, Including biogas
(mostly methane and CO2), and ethanol. Such activated (oxidized) organic
matter may also be used as a feedstock for
other chemical and biological processing.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 2884187 was not found.
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Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Inactive: IPC from PCS | 2023-11-25 |
Inactive: IPC from PCS | 2023-11-25 |
Inactive: IPC assigned | 2023-11-08 |
Inactive: IPC assigned | 2023-11-08 |
Inactive: IPC expired | 2022-01-01 |
Inactive: IPC removed | 2020-12-31 |
Inactive: IPC removed | 2020-12-31 |
Application Not Reinstated by Deadline | 2017-03-10 |
Inactive: Dead - No reply to s.37 Rules requisition | 2017-03-10 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2017-03-10 |
Deemed Abandoned - Failure to Respond to Notice Requiring a Translation | 2016-10-05 |
Application Published (Open to Public Inspection) | 2016-09-10 |
Inactive: Cover page published | 2016-09-09 |
Inactive: Incomplete | 2016-07-05 |
Inactive: Abandoned - No reply to s.37 Rules requisition | 2016-03-10 |
Inactive: Correspondence - Formalities | 2015-11-02 |
Inactive: Request under s.37 Rules - Non-PCT | 2015-09-25 |
Inactive: IPC assigned | 2015-04-29 |
Inactive: IPC assigned | 2015-04-29 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC removed | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC removed | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: First IPC assigned | 2015-03-31 |
Inactive: IPC assigned | 2015-03-31 |
Inactive: Filing certificate - No RFE (bilingual) | 2015-03-16 |
Reinstatement Requirements Deemed Compliant for All Abandonment Reasons | 2015-03-13 |
Application Received - Regular National | 2015-03-13 |
Inactive: Pre-classification | 2015-03-10 |
Small Entity Declaration Determined Compliant | 2015-03-10 |
Inactive: QC images - Scanning | 2015-03-10 |
Abandonment Date | Reason | Reinstatement Date |
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2017-03-10 | ||
2016-10-05 |
Fee Type | Anniversary Year | Due Date | Paid Date |
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Application fee - small | 2015-03-10 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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AXSIOM MANAGEMENT, INC. |
Past Owners on Record |
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IAN W. WYLIE |
TONI ILLINGWORTH |