GB2225335A - Edible oil waste treatment composition - Google Patents

Edible oil waste treatment composition Download PDF

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Publication number
GB2225335A
GB2225335A GB8924413A GB8924413A GB2225335A GB 2225335 A GB2225335 A GB 2225335A GB 8924413 A GB8924413 A GB 8924413A GB 8924413 A GB8924413 A GB 8924413A GB 2225335 A GB2225335 A GB 2225335A
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GB
United Kingdom
Prior art keywords
oil waste
treatment composition
waste treatment
oil
water
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Withdrawn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
GB8924413A
Other versions
GB8924413D0 (en
Inventor
Shinji Komine
Eiichi Osawa
Keiji Watanabe
Shunji Tsuruoka
Hiroyuki Nagai
Satoshi Horiguchi
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.)
Gakushu Kenkyusha KK
Gakken Holdings Co Ltd
Original Assignee
Gakken Co Ltd
Gakushu Kenkyusha KK
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 Gakken Co Ltd, Gakushu Kenkyusha KK filed Critical Gakken Co Ltd
Publication of GB8924413D0 publication Critical patent/GB8924413D0/en
Publication of GB2225335A publication Critical patent/GB2225335A/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/02—Refining fats or fatty oils by chemical reaction
    • C11B3/06—Refining fats or fatty oils by chemical reaction with bases

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Detergent Compositions (AREA)

Abstract

An edible oil waste treatment composition comprises an inorganic weak acid alkali salt and a surface active agent, which composition is mixed into an oil waste together with a given amount of water and then stirred.

Description

Oil waste treatment compositions The present invention relates to an oil waste treatment composition used when fats and oils such as edible oil are discarded.
When, for example, the edible oil, which is one of fats and oils, is repeatedly used in frying in homes, it gradually undergoes deterioration of flavor or the like, and is then discarded sooner or later. The deterioration occurs for the reason that when the edible oil is heated or exposed to the air for a long period of time, a higher fatty acid triglyceride, CHZ(ORCO;CH(OR'CO)CHZ(ORCO), which is the main component of edible oil, is hydrolyzed.
because of water content in the air to produce a free fatty acid RCOOH, R'COOH or R"COOH, or decomposed because of oxygen in the air.
If, however, the edible oil having deteriorated is discarded as oil waste by directly throw it from the inlet of a drain pipe, there is caused clogging of the drain pipe or generation of bad smell.
To solve this problem, various oil waste treatment compositions are commercially available in recent years.
Some of such oil waste treatment compositions are mixed in oil waste before the oil waste is discarded, to solidify the oil waste. Some others are mixed in oil waste to produce soap from the oil waste.
However, operation to solidify the oil waste, using the former oil waste treatment compositions, necessarily takes a relatively long time.
Operation to make the oil waste into soap, using the latter oil waste treatment compositions, also takes labor and time. In addition, the quality of the soap obtained from the oil waste and oil waste treatment composition is unsatisfactory.
On account of the problems involved in the conventional -oil waste treatment compositions as mentioned above, the present invention was made to effectively solve the problems.
Accordingly, an object of the present invention is to provide an oil waste treatment composition capable of treating oil waste in a short time and with a simple operation.
To achieve the above object, the present invention provides an oil waste treatment composition comprising an inorganic weak acid alkali salt and a surface active agent, said composition being intended to be mixed in use into an oil waste together with a given amount of water and then stirred.
The present invention provides also a method of disposing an oil waste, comprising the steps of: heating the oil waste to a given temperature; mixing an oil waste treatment composition, together with a given amount of water, into the heated oil waste, said oil waste treatment composition comprising an inorganic weak acid alkali salt and a surface active agent; stirring for a given time a mixture comprising the oil waste treatment composition, water and oil waste thus mixed; diluting the mixture thus stirred, with a given amount of water; and then discarding the diluted mixture.
Preferred embodiments of the present invention will be described below, from which further features, objects and advantages of the present invention will become selfexplanatory.
As in Examples 1 and 2 described below, oil waste treatment compositions A and B according to the present invention comprises (a) from 75 to 85 wt.% of an inorganic weak acid alkali salt and (b) from 15 to 25 wt.% of an anionic surface active agent.
Example 1 The oil waste treatment composition A used in this Example 1 is composed of the following.
(a) Inorganic weak acid alkali salt: Sodium metasilicate (Na2SiO3) 40 wt.S Sodium carbonate (Na2CO3) 40 wt.S (b) Anionic surface active agent: Sodium a-olefin sulfonate [a mixture of RCH2CH(OH)(CH2)mS03Na and RCH=CH(CH2)nSO3Na] 20 wt.% The components of this oil waste treatment composition A, sodium metasilicate, sodium carbonate and sodium a-olefin sulfonate, are in a proportion of 2:2:1 in weight ratio.
Using this oil waste treatment composition A, the following experiments were carried out.
First, 50 g of the oil waste treatment composition A was mixed, together with 200 g of water, into 400 g of oil waste (an edible oil having deteriorated) heated to 70eC.
Next, the resulting mixture was stirred for a-period of 1 minute, 2 minutes, 3 minutes, 5 minutes and 10 minutes to prepare samples 1, 2, 3, 4 and 5, respectively. For example, the samples 1 and 5 were prepared in the following way: Sample 1 Oil waste treatment composition A 50 g Water 200 g Oil waste, 70C 400 g These were all added and stirred for 1 minute.
Sample 5 Oil waste treatment composition A 50 g Water 200 g Oil waste, 70'C 400 g These were all added and stirred for 10 minute.
Thereafter, 2,000 mQ of water was added in each of the samples 1 to 5, which were then left to stand, and the states of the resulting solutions 1, 2, 3, 4 and 5 were observed. For example, the solutions 1 and 5 were obtained in the following way.
Solution 1 ( Sample 1 + 2,000 mQ of water) Solution 5 (= Sample 5 + 2,000 mQ of. water) Films of fats and oils remained unsaponified and unemulsified were observed on the surfaces of the solutions 1 and 2, and hence these solutions were not suited to be thrown away as they were.
On the other hand, no films of fats and oils were observed on the surfaces of any solutions 3, 4 and 5, and there were obtained uniform aqueous solutions suited to be thrown away.
Example 2 The oil waste treatment composition B used in this Example 2 is composed of the following.
(a) Inorganic weak acid alkali salt: Anhydrous sodium metasilicate (Na2SiO3) 17.4 wt.% Anhydrous sodium carbonate (Na2CO3) 40.4 wt.% Anhydrous sodium bicarbonate (NaHCO3) 20.2 wt.% (b) Anionic surface active agent: Sodium lauryl sulfonate (C12H250SO3Na) 22.0 wt.% In place of the above sodium lauryl sulfonate, a suitable kind of sodium alkylsulfonate ROS03Na may also be used.
When, for example, 50 g of the oil waste treatment composition B is used, each component is contained in the weight as follows: Anhydrous sodium metasilicate 8.7 g Anhydrous sodium carbonate 20.2 g Anhydrous sodium bicarbonate 10.1 g Sodium lauryl sulfonate 11.0 g Using this oil waste treatment composition B, the following experiments were carried out.
First, 50 g of the oil waste treatment composition B was mixed, together with 200 mQ of water, into 400 g of oil waste (an edible oil having deteriorated) heated to 100 e C. Next, the resulting mixture was stirred for a period of 1 minute, 2 minutes, 3 minutes or 5 minutes to prepare samples 6, 7, 8 and 9, resectively. For example, .the samples 6 was prepared in the following way: Sample 6 Oil waste treatment composition B 50 g Water 200 mQ Oil waste, 100'C 400 g These were all added and stirred for 1 minute.
Thereafter, 2,000 mQ of water was added in each of the samples 6 to 9, which were then left to stand, and the states of the resulting solutions 6, 7, 8 and 9 were observed. For example, the solutions 6 was obtained in the following way.
Solution 6 (= Sample 6 + 2,000 mQ of water) No films of fats and oils were observed on the surfaces of any solutions 6, 7, 8 and 9, and there were obtained uniform aqueous solutions suited to be thrown away.
In respect of the sample 7, a comparative test was further carried out according to the evaluation method on detergency of kitchen synthetic detergents, as prescribed in JIS K3370, to compare it with a commercially available pipe cleaning agent C. As a result, the drain pipe cleaning effect of the sample 7 was found to be superior to the drain pipe cleaning effect of the commercially available pipe cleaning agent C.
Consideration relating to Examples 1 and 2 First, the oil waste contains the following main component (i), and the component (ii) produced as a result of hydrolysis of the main component (i).
(i) Higher fatty acid triglyceride: CH2(ORCO)CH(OR'C03CH2(OR"CO) (ii) Free fatty acid: RCOOH, R'COOH, R"COOH, and glycerol CH2OHCH(OH)CH2OH When the oil waste treatment composition A or B is mixed in the oil waste together with a given amount of water and also the mixture is stirred, the following physical phenomenon and chemical reaction take place at the same time.
As the physical phenomenon, the solution in which the inorganic weak acid alkali salt (a) has been dissolved, and the oil waste are emulsified by the action of the surface active agent (b). This results in an increase in the contact area between the oil waste and the aqueous alkali solution.
Under such conditions, as the chemical reaction, the inorganic weak acid alkali salt (a) and the triglyceride and free fatty acid in the oil waste cause saponification reaction and neutralization reaction. Because of the great contact area between the oil waste and the aqueous alkali solution, the saponification reaction and neutralization reaction proceed at a great rate.
For example, the following takes place in Example 1.
Saponification reaction CH2(0RCO)CH(OR'CO)CH2(0R"CO) + inorganic weak acid alkali salt (a) ) soap (RCOONa, RCOOK, R'COONa, R'COOK, R"COONa, R"COOK) + glycerol + inorganic weak acid Neutralization reaction RCOOH, R'COOH, R"COOH + inorganic weak acid alkali salt (a) - g soap (RCOONa, RCOOK, R'COONa, R'COOK, R"COONa, R"COOK) + inorganic weak acid From the experiments using the above oil waste treatment compositions A and B, what follows can be understood.
In the instance of the oil waste treatment composition A, mere stirring for 3 minutes as in the solution 3 can give the aqueous solution on the surface of which no film of fats and oils is observed and which is suited to be thrown away.
In the instance of the oil waste treatment composition B, mere stirring for 1 minute as in the solution 6 can give the aqueous solution on the surface of which ho film of fats and oils is observed and which is suited to be thrown away.
The temperature of the oil waste at the time the oil waste treatment composition A or B is mixed may preferably range from 50'C to 100CC, and the amount of the water initially mixed in the oil waste together with the oil waste treatment composition may preferably be about the half of the volume of the oil waste.
As will be understood from what are described above, use of the oil waste treatment composition according to the present invention can give a uniform aqueous solution suited to be thrown away, as a result of mere stirring for 3 minutes at maximum. In other words, there is provided an oil waste treatment composition capable of treating the oil waste by simple operation in a short time.
Moreover, as will be seen also from the detergency comparison test relating to the sample 7 in Example 2, the soap-like substance obtained as a result of the mixing and stirring of the oil waste treatment composition of the present invention, water, and oil waste, have a satisfactory detergency. Hence, it is also possible to clean the drain pipe when the treated oil waste is thrown from the inlet of the drain pipe, with further addition of water. Namely, it is possible to use the treated oil waste as a drain pipe cleaning solution, with its cleaning ability higher than the cleaning ability of the commercially available drain pipe cleaning agent.
On the other hand, as previously described, the oil waste treatment compositions A and B according to the present invention contain (a) from 75 to 85 wt.% of the inorganic weak acid alkali salt and (b) from 15.to 25 wt.% of the anionic surface active agent. In this respect, presupposing that the amount of the water initially mixed in the oil waste together with the oil waste treatment composition is about the half of the volume of the oil waste, such a weight proportion of the surface active agent is necessary and enough for the aqueous alkali solution and oil waste to be emulsified and mixed.
In the above oil waste treatment compositions A and B, the sodium metasilicate, sodium carbonate, anhydrous sodium metasilicate, anhydrous sodium carbonate, and anhydrous sodium bicarbonate used as the inorganic weak acid alkali salt (a) are inexpensively available and also harmless. In this respect, it is preferred to use the silicates and carbonates as described above as the inorganic weak acid alkali salt (a).
As the anionic surface active agent (b), the petroleum type sodium a-olefin sulfonate and sodium lauryl sulfonate are used, which are readily obtainable and inexpensive. In place of such petroleum anionic surface active agents, however, it is possible to use nonionic surface active agents of an alcohol type, or soap. For practical reasons, the petroleum anionic surface active agents may preferably be used.

Claims (11)

1. An oil waste treatment composition comprising an inorganic weak acid alkali salt and a surface active agent, said composition being intended to be mixed in use into an oil waste together with a given amount of water and then stirred.
2. An oil waste treatment composition according to Claim 1, wherein said surface active agent comprises a petroleum anionic surface active agent.
3. An oil waste treatment composition according to Claim 1 or 2, wherein; said surface active agent is contained in an amount of from 15 wt.% to 25 wt. % based on said oil waste treatment composition.
4. An oil waste treatment composition according to Claim 1, 2 or 3, wherein said inorganic weak acid alkali salt comprises a silicate or a carbonate.
5. A method of disposing an oil waste, comprising the steps of; mixing an oil waste treatment composition according to any one of Claims 1 to 4,together with a given amount of water1 into the oil waste; stirring for a given time a mixture comprising the oil waste treatment composition, water and oil waste thus mixed; diluting the mixture thus stirred, with a given amount of water; and then discarding the diluted mixture.
6. A method according to Claim 5, wherein the oil waste is heated prior to mixing with the oil waste treatment composition.
7. A method according to Claim 6, wherein the oil waste is heated to between 700C and 100 C.
8. A method according to Claim 5, 6 or 7, wherein said given amount of water corresponds substantially to half the amount of oil waste.
9. A method according to Claim 5, 6, 7 or 8, wherein the diluted mixture is discarded into a drain pipe as a drain pipe cleaning solution.
10. An oil waste treatment composition as claimed in Claim 1, substantially as herein described with reference to the examples.
11. A method of disposing of an oil waste according to Claim 5, substantially as herein described with reference to the examples.
GB8924413A 1988-11-16 1989-10-30 Edible oil waste treatment composition Withdrawn GB2225335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63289243A JPH02135298A (en) 1988-11-16 1988-11-16 Agent for treating waste oil

Publications (2)

Publication Number Publication Date
GB8924413D0 GB8924413D0 (en) 1989-12-20
GB2225335A true GB2225335A (en) 1990-05-30

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JP (1) JPH02135298A (en)
KR (1) KR910005993B1 (en)
GB (1) GB2225335A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100342352B1 (en) * 1999-09-17 2002-06-27 최영환 A manufacturing method of a cleanser for oid and a carbide
KR100763504B1 (en) * 2006-06-16 2007-10-04 주식회사 이엔에프테크놀로지 Treatment method for waste organic solvent containing crosslinkable photoresist component

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB808901A (en) * 1954-02-11 1959-02-11 Reginald William Groom A new or improved method of and equipment for cleansing surfaces of oily deposits
GB902600A (en) * 1960-06-24 1962-08-01 Exxon Research Engineering Co Oil separation process
GB1566787A (en) * 1977-02-28 1980-05-08 Montedison Spa Self-sequestering surfactants and their use in detergent compositions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB808901A (en) * 1954-02-11 1959-02-11 Reginald William Groom A new or improved method of and equipment for cleansing surfaces of oily deposits
GB902600A (en) * 1960-06-24 1962-08-01 Exxon Research Engineering Co Oil separation process
GB1566787A (en) * 1977-02-28 1980-05-08 Montedison Spa Self-sequestering surfactants and their use in detergent compositions

Also Published As

Publication number Publication date
GB8924413D0 (en) 1989-12-20
KR910005993B1 (en) 1991-08-09
JPH02135298A (en) 1990-05-24
KR900008031A (en) 1990-06-02

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