CA2105716A1 - Method of cleaning oil contaminated filter medium extracted from oil filters - Google Patents
Method of cleaning oil contaminated filter medium extracted from oil filtersInfo
- Publication number
- CA2105716A1 CA2105716A1 CA 2105716 CA2105716A CA2105716A1 CA 2105716 A1 CA2105716 A1 CA 2105716A1 CA 2105716 CA2105716 CA 2105716 CA 2105716 A CA2105716 A CA 2105716A CA 2105716 A1 CA2105716 A1 CA 2105716A1
- Authority
- CA
- Canada
- Prior art keywords
- filter medium
- oil
- emulsifying agent
- biodegradable
- contaminated filter
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D41/00—Regeneration of the filtering material or filter elements outside the filter for liquid or gaseous fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
Abstract
ABSTRACT OF THE DISCLOSURE
A method of cleaning oil contaminated filter medium extracted from oil filters is described. Firstly, treat the oil contaminated filter medium with a biodegradable emulsifying agent, thereby emulsifying oil in the filter medium. Secondly, soak the oil contaminated filter medium in a bath of biodegradable solvent compatible with the biodegradable emulsifying agent, thereby dissolving remaining oil in the filter medium. The clean filter medium resulting from this method absorbs oil and repels water, permitting recycling of the filter medium for secondary uses in which the ability to absorb oil is a prerequisite.
A method of cleaning oil contaminated filter medium extracted from oil filters is described. Firstly, treat the oil contaminated filter medium with a biodegradable emulsifying agent, thereby emulsifying oil in the filter medium. Secondly, soak the oil contaminated filter medium in a bath of biodegradable solvent compatible with the biodegradable emulsifying agent, thereby dissolving remaining oil in the filter medium. The clean filter medium resulting from this method absorbs oil and repels water, permitting recycling of the filter medium for secondary uses in which the ability to absorb oil is a prerequisite.
Description
21~71~ ;~
The present invention relates to a method of cleaning oil contaminated filter medium extracted from oil filters. -. ~.
BACKGROU~lD OF TH:E INVENTION
It is recognized that metal canister oil filters commonly used in automobiles represent an environmental hazard when disposed of in land fill sites. Efforts are presently being made to integrate the disposal of these oil filters into existing recycling programs. Thes~e efforts involve separating -~
the filter medium from the metal canister. The metal canisters are then recycled as scrap metal, leaving the filter medium to be disposed of separately. The filter medium most 15 commonly found in these oil filters is a wet strength grade of absorbent paper with a plasticized coating on one side. To this point there has been no effective manner of cleaning the filter medium to a sufficient degree to permit the used filter medium to be adapted for a secondary use. In fact, the filter medium has not been cleaned to a sufficient degree to permit safe disposal in landfill sites. The oil contaminated filter medium is presently incinerated. -25 SUMM~RY OF TEIE INVENTION -I What is required is a method of cleaning oil contaminated filter medium extracted from oil filters to a sufficient degree to allow for safe landfill disposal or recycling for a ~ `
secondary use.
According to the present invention there is provided a method of cleaning oil contaminated filter medium extracted from oil filters which includes the following described steps.
Firstly, treat the oil contaminated filter medium with a biodegradable emulsifying agent, thereby emulsifying oil in the filter medium. Secondly, soak the oil contaminated filter medium in a bat;h of biodegradable solvent compatible with the biodegradable emulsifying agent, thereby dissolving remaining oil in the filter medium.
.'", ::
211~7~6 Although beneficial results may be obtained through the use of the method, as descrlbed, it is preferred that measures be incorporated in the method to recycle as much of the solvent and emulsifying agent as possible. This makes economic sense as it reduces the cost of the methodO Thi~
also enhances the beneficial results obtained as it reduces the residue of solvent and emulsifying agent in -the filter medium. Even more beneficial :results may, therefore, be obtained by introducing intermediate steps of wringing excess solvent and emulsifying agent from the filter medium. There are a number of different presses and other mechanical means by which this may be done.
Although beneficial results may be obtained through the 15 use of the method, as described, it is preferred that measures -~
be taken to enhance the effectiveness of the emulsifying agent. The agitation of the filter medium has been found to be beneficial. Even more beneficial results may, therefore, be obtained by agitating the fil-ter medium during the emulsifying step.
. ' ~;.
BRIEF DESCRIPTION OF THE DRAWINGS --~
-These and other features of the invention will become more apparent from the following description in which re~erence is made to the appended drawings, wherein~
FIGURE 1 is a flow diagram of a method according to the teachings of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred method of cleaning oil contaminated filter medium 10 extracted from oil filters will now be described with reference to FIGVR~ 1 7 , ' Referring to FIGURE 1, the preferred method includes the following steps;. Firstly, treat the oil contaminated filter 7 1 ~
` medium 10 with a biodegradable emulsifying agent by placing filter medium 10 in a bath of biodegradable emulsifying agent 12, and agitating with mechanical agitator 14. This serves to emulsifying oil in filter medium 10. Secondly, wring excess ~¦ 5 emulsifying agent out of filter medium through the use of a first set of mechanical wringers 16. Thirdly, soak the oil ~ contaminated filter medium 10 ;n a bath of biodegradable i solvent compatible 18 with the biodegradable emulsifying agent. This dissolves remaininq oil in the filter medium.
10 Fourthly, wring excess solvent out of filter medium 10 through the use of a second set of mechanical wringers 20. After the described steps are performed the oil contc~mination level in ~, filter medium 10 is reduced to less than one percent (1%). It¦~ is important that the solvent and emulsifying agent both be 15 biodegradable, otherwise the process will be counter-productive as the solvent and emulsifying agent will contaminate filter medium 10. There is no point in substituting one form of contamination for the oil contamination. It is also important that the emulsifying 20 agent selected be compatible with the solvent being used to Z ensure best results. Beneficial results have been obtained through the use of an orange based food grade solvent. The use of biogradable solvents and emulsifying agents render filter medium 10 suitable for disposal in land fill sites. However, 25 filter medium 10 is suitable for use in a variety of secondary ~ uses after processing according to this method, and such a $ valuable product should not have to be disposed of in land fill sites. Filter medium 10 has tremendous oil absorbing capabilities, which i8 why it was selected for use in the oil 30 filters in the first place. After processing in accordance with the described method, filter medium 10 has a residue of j solvent which makes it repel water. Filter medium 10 can be ~ used in mechanic shops as oil absorbent mats. The oil ¦ absorbent mats can be cleaned by following the described ~ 35 method. The fact that filter medium 10 repels water after ¦ processing in accordance with the described method enables it ,..
210~71 6 ., to be used in the clean up of oil spills on bodies of water, such as our lakes and rivers.
It will be apparent to one skilled in the art that modifications may be made to the described method without departing from the spirit and scope of thP invention as defined by the Claims.
';'.~.~`
; ''`','~
~ .
~ , ' .
', ' '~ .~ 1'`' ."''' ~`' " ::
' ' ~ '' .
, :' '' -, .
~,~
The present invention relates to a method of cleaning oil contaminated filter medium extracted from oil filters. -. ~.
BACKGROU~lD OF TH:E INVENTION
It is recognized that metal canister oil filters commonly used in automobiles represent an environmental hazard when disposed of in land fill sites. Efforts are presently being made to integrate the disposal of these oil filters into existing recycling programs. Thes~e efforts involve separating -~
the filter medium from the metal canister. The metal canisters are then recycled as scrap metal, leaving the filter medium to be disposed of separately. The filter medium most 15 commonly found in these oil filters is a wet strength grade of absorbent paper with a plasticized coating on one side. To this point there has been no effective manner of cleaning the filter medium to a sufficient degree to permit the used filter medium to be adapted for a secondary use. In fact, the filter medium has not been cleaned to a sufficient degree to permit safe disposal in landfill sites. The oil contaminated filter medium is presently incinerated. -25 SUMM~RY OF TEIE INVENTION -I What is required is a method of cleaning oil contaminated filter medium extracted from oil filters to a sufficient degree to allow for safe landfill disposal or recycling for a ~ `
secondary use.
According to the present invention there is provided a method of cleaning oil contaminated filter medium extracted from oil filters which includes the following described steps.
Firstly, treat the oil contaminated filter medium with a biodegradable emulsifying agent, thereby emulsifying oil in the filter medium. Secondly, soak the oil contaminated filter medium in a bat;h of biodegradable solvent compatible with the biodegradable emulsifying agent, thereby dissolving remaining oil in the filter medium.
.'", ::
211~7~6 Although beneficial results may be obtained through the use of the method, as descrlbed, it is preferred that measures be incorporated in the method to recycle as much of the solvent and emulsifying agent as possible. This makes economic sense as it reduces the cost of the methodO Thi~
also enhances the beneficial results obtained as it reduces the residue of solvent and emulsifying agent in -the filter medium. Even more beneficial :results may, therefore, be obtained by introducing intermediate steps of wringing excess solvent and emulsifying agent from the filter medium. There are a number of different presses and other mechanical means by which this may be done.
Although beneficial results may be obtained through the 15 use of the method, as described, it is preferred that measures -~
be taken to enhance the effectiveness of the emulsifying agent. The agitation of the filter medium has been found to be beneficial. Even more beneficial results may, therefore, be obtained by agitating the fil-ter medium during the emulsifying step.
. ' ~;.
BRIEF DESCRIPTION OF THE DRAWINGS --~
-These and other features of the invention will become more apparent from the following description in which re~erence is made to the appended drawings, wherein~
FIGURE 1 is a flow diagram of a method according to the teachings of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred method of cleaning oil contaminated filter medium 10 extracted from oil filters will now be described with reference to FIGVR~ 1 7 , ' Referring to FIGURE 1, the preferred method includes the following steps;. Firstly, treat the oil contaminated filter 7 1 ~
` medium 10 with a biodegradable emulsifying agent by placing filter medium 10 in a bath of biodegradable emulsifying agent 12, and agitating with mechanical agitator 14. This serves to emulsifying oil in filter medium 10. Secondly, wring excess ~¦ 5 emulsifying agent out of filter medium through the use of a first set of mechanical wringers 16. Thirdly, soak the oil ~ contaminated filter medium 10 ;n a bath of biodegradable i solvent compatible 18 with the biodegradable emulsifying agent. This dissolves remaininq oil in the filter medium.
10 Fourthly, wring excess solvent out of filter medium 10 through the use of a second set of mechanical wringers 20. After the described steps are performed the oil contc~mination level in ~, filter medium 10 is reduced to less than one percent (1%). It¦~ is important that the solvent and emulsifying agent both be 15 biodegradable, otherwise the process will be counter-productive as the solvent and emulsifying agent will contaminate filter medium 10. There is no point in substituting one form of contamination for the oil contamination. It is also important that the emulsifying 20 agent selected be compatible with the solvent being used to Z ensure best results. Beneficial results have been obtained through the use of an orange based food grade solvent. The use of biogradable solvents and emulsifying agents render filter medium 10 suitable for disposal in land fill sites. However, 25 filter medium 10 is suitable for use in a variety of secondary ~ uses after processing according to this method, and such a $ valuable product should not have to be disposed of in land fill sites. Filter medium 10 has tremendous oil absorbing capabilities, which i8 why it was selected for use in the oil 30 filters in the first place. After processing in accordance with the described method, filter medium 10 has a residue of j solvent which makes it repel water. Filter medium 10 can be ~ used in mechanic shops as oil absorbent mats. The oil ¦ absorbent mats can be cleaned by following the described ~ 35 method. The fact that filter medium 10 repels water after ¦ processing in accordance with the described method enables it ,..
210~71 6 ., to be used in the clean up of oil spills on bodies of water, such as our lakes and rivers.
It will be apparent to one skilled in the art that modifications may be made to the described method without departing from the spirit and scope of thP invention as defined by the Claims.
';'.~.~`
; ''`','~
~ .
~ , ' .
', ' '~ .~ 1'`' ."''' ~`' " ::
' ' ~ '' .
, :' '' -, .
~,~
Claims (3)
1. A method of cleaning oil contaminated filter medium extracted from oil filters, comprising the steps of:
a. firstly, treating the oil contaminated filter medium with a biodegradable emulsifying agent, thereby emulsifying oil in the filter medium; and b. secondly, soaking the oil contaminated filter medium in a bath of biodegradable solvent compatible with the biodegradable emulsifying agent, thereby dissolving remaining oil in the filter medium.
a. firstly, treating the oil contaminated filter medium with a biodegradable emulsifying agent, thereby emulsifying oil in the filter medium; and b. secondly, soaking the oil contaminated filter medium in a bath of biodegradable solvent compatible with the biodegradable emulsifying agent, thereby dissolving remaining oil in the filter medium.
2. A method of cleaning oil contaminated filter medium extracted from oil filters, comprising the steps of:
a. firstly, treating the oil contaminated filter medium with a biodegradable emulsifying agent, thereby emulsifying oil in the filter medium;
b. secondly, wringing excess emulsifying agent out of the filter medium;
c. thirdly, soaking the oil contaminated filter medium in a bath of biodegradable solvent compatible with the biodegradable emulsifying agent, thereby dissolving remaining oil in the filter medium; and d. fourthly, wringing excess solvent out of the filter medium.
a. firstly, treating the oil contaminated filter medium with a biodegradable emulsifying agent, thereby emulsifying oil in the filter medium;
b. secondly, wringing excess emulsifying agent out of the filter medium;
c. thirdly, soaking the oil contaminated filter medium in a bath of biodegradable solvent compatible with the biodegradable emulsifying agent, thereby dissolving remaining oil in the filter medium; and d. fourthly, wringing excess solvent out of the filter medium.
3. The method as defined in Claim 1 and 2, the treatment of the filter medium with the emulsifying agent including agitation of the filter medium in a bath of emulsifying agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2105716 CA2105716A1 (en) | 1993-09-08 | 1993-09-08 | Method of cleaning oil contaminated filter medium extracted from oil filters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2105716 CA2105716A1 (en) | 1993-09-08 | 1993-09-08 | Method of cleaning oil contaminated filter medium extracted from oil filters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2105716A1 true CA2105716A1 (en) | 1995-03-09 |
Family
ID=4152279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2105716 Abandoned CA2105716A1 (en) | 1993-09-08 | 1993-09-08 | Method of cleaning oil contaminated filter medium extracted from oil filters |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2105716A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0932459A1 (en) * | 1996-07-30 | 1999-08-04 | University Of Chicago | Efficient continuous dryer for flexible polyurethane foam and cleaning apparatus |
| CN111659184A (en) * | 2020-06-08 | 2020-09-15 | 芜湖职业技术学院 | Sewage pretreatment device |
-
1993
- 1993-09-08 CA CA 2105716 patent/CA2105716A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0932459A1 (en) * | 1996-07-30 | 1999-08-04 | University Of Chicago | Efficient continuous dryer for flexible polyurethane foam and cleaning apparatus |
| EP0932459A4 (en) * | 1996-07-30 | 2000-02-09 | Univ Chicago | Efficient continuous dryer for flexible polyurethane foam and cleaning apparatus |
| CN111659184A (en) * | 2020-06-08 | 2020-09-15 | 芜湖职业技术学院 | Sewage pretreatment device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0302313B1 (en) | Process and apparatus for treating objects with solvents in a closed vessel | |
| DE69034057T2 (en) | Detergent compositions | |
| DE69529832T2 (en) | AQUEOUS METAL CLEANER | |
| US5244566A (en) | Process for deabsorbing oil from oil absorbent | |
| JP3766623B2 (en) | PCB contamination treatment method | |
| CA2105716A1 (en) | Method of cleaning oil contaminated filter medium extracted from oil filters | |
| US5779813A (en) | Method and apparatus for decontamination of poly chlorinated biphenyl contaminated soil | |
| US5590671A (en) | Mobile battery cleaning system | |
| US4601817A (en) | Treatment of hazardous materials | |
| US5762716A (en) | Methods for wiping a metal contaminated surface with a water soluble fabric | |
| DE4040944C2 (en) | Process for cleaning containers | |
| EP3341462B1 (en) | Process for cleaning contaminated plastic material for recycling | |
| US5207923A (en) | Process and apparatus for waste water treatment | |
| US4184949A (en) | Process for separating hydrocarbon pollution from a hydroorganic medium | |
| DE4233600C1 (en) | Treatment of plastic wastes contg. metallic or organic impurities - involves washing with aq. alkaline medium to provide material useful as additive for building materials | |
| JP4032455B2 (en) | Oil-contaminated soil treatment method | |
| JPS585309B2 (en) | How to wash industrial bag filters and rags contaminated with oil and metal powder, etc. | |
| EP1216735B1 (en) | Removal of oil from waste water | |
| DE4240387A1 (en) | Organic contaminant esp. oil sepn. | |
| US5986147A (en) | Method and solution for removal of poly chlorinated biphenyl | |
| WO1999025493A1 (en) | Improvements in recycling methods | |
| DE4231306C2 (en) | Process for cleaning machine-contaminated machine parts and device for cleaning metallic machine parts contaminated by polymers | |
| Quitmeyer | Aqueous cleaners challenge chlorinated solvents | |
| US4500363A (en) | Method of extracting perchlorethylene from dry cleaner filter cartridges | |
| DE3009739A1 (en) | Decontaminating radioactive garments by dry cleaning - using solvent which is continuously pumped through agitated drum and sump and particle filters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |