GB2145405A - Process for the preparation of waste for transport and/or storage - Google Patents

Process for the preparation of waste for transport and/or storage Download PDF

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Publication number
GB2145405A
GB2145405A GB08421377A GB8421377A GB2145405A GB 2145405 A GB2145405 A GB 2145405A GB 08421377 A GB08421377 A GB 08421377A GB 8421377 A GB8421377 A GB 8421377A GB 2145405 A GB2145405 A GB 2145405A
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GB
United Kingdom
Prior art keywords
emulsion
waste
monomer
flame retarding
transport
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.)
Granted
Application number
GB08421377A
Other versions
GB2145405B (en
GB8421377D0 (en
Inventor
Pierre Albert Crouzet
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.)
BARROW INVESTMENTS
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BARROW INVESTMENTS
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 BARROW INVESTMENTS filed Critical BARROW INVESTMENTS
Publication of GB8421377D0 publication Critical patent/GB8421377D0/en
Publication of GB2145405A publication Critical patent/GB2145405A/en
Application granted granted Critical
Publication of GB2145405B publication Critical patent/GB2145405B/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/16—Processing by fixation in stable solid media
    • G21F9/167—Processing by fixation in stable solid media in polymeric matrix, e.g. resins, tars
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/16—Processing by fixation in stable solid media
    • G21F9/162—Processing by fixation in stable solid media in an inorganic matrix, e.g. clays, zeolites
    • G21F9/165—Cement or cement-like matrix

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Removal Of Specific Substances (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Catalysts (AREA)
  • Colloid Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)
  • Liquid Carbonaceous Fuels (AREA)

Abstract

A process for the preparation of waste for transport and/or storage, especially chemical and/or radioactive waste, wherein a strong thixotropic emulsion having a small water content is provided and waste in a liquid or semi-liquid form or in the form of a slurry is added to the emulsion. The emulsion may contain additives such as flame retarding agents and temperature dependent solidification catalysts.

Description

1 GB 2 145 405 A 1
SPECIFICATION
Process for the preparation of waste for transport and/or storage The present invention refers to a process for the preparation of chemical radioactive or other waste for transport and/or storage.
The problems concerned with the transport of chemical and/or radioactive waste are complex and extremely expensive treatments are required before transport of said waste. International regulations provided measures for the transport of such waste, wherein possible damage to the transport contain- ers, fire, etc. is taken into consideration.
The present invention provides a simple and inexpensive process for the preparation of waste for transport and/or storage, whilst offering simultaneously a hitherto unknown level of security.
According to the invention an emulsion is provided, said emulsion having a low water content and being highly thixotropic, and to said emulsion waste in a liquid, semi-liquid or slurry form is added.
Preferably the emulsion additionally contains at least one flame retarding additive. Preferably the emulsion additionally contains at least one catalyst, said catalyst being stable at low temperatures and active at high temperatures (e.g. above 60'Cl to solidify the emulsion.
The product of the process according to the 95 invention is a waste/emulsion gel suitable for trans port and/or storage.
In a preferred embodiment of the invention, using all of the said additives, the emulsion is extended by means of the waste in a liquid or semi-liquid form or in the form of a slurry [said waste coming from the nuclear, chemical or other industry]. The transport and/or the storage of waste processed according to the invention may provide advantages as follows:
a] In case of collision or damage to a container containing the waste product, the product cannot flow since it is in gel form and requires mixing/ stirring to cause liquification.
b] In case of fire the flame retarding products inhibit rapid expansion of the fire.
cl in a case where a fire causes a high temperature [e.g. above 60'Cl the emulsion becomes solid and allows a quick and mechanical removal of the waste.
In agreement with the International regulations the invention makes it possible to transport waste away from the source and to an independent factory for treatment.
An emulsion of the type as described in U.S. Patents Nos. 4 115 336 and 4 204 988, and Australian Patents Nos. 513 486 and 515 778, may be used in the process of the invention. Such an emulsion contains a resin [preferably an unsaturated polyester resin] and a monomer [preferably an unsaturated monomer].
According to the invention the percentage of water 125 in the emulsion is reduced to a value which permits the addition of water and liquids which accompany the different forms of wastes. The use of bromin ated, chlorinated, phosphated and other products in the preparation of the base resin may give the 130 emulsion high auto-extinction flame retarding properties. The emulsion may have the following additives:
a] Flame retarding agents, e.g. aluminium trihy- d rate, phosphate derivatives [trich lo roethyl phosphate] and chloro derivatives [chlorinated paraffins], bromo derivatives and especially decabromodiphenyl chloride [preferably at maximum dose] etc.
bl Commercial solidification catalysts which are compatible with polyester resins and which are stable at +1 50to +600C and which are active at WC or a higher temperature, e.g. tert butylperbenzoate or 1.1-bis- [tert-b utyl peroxyl-cycl oxen a ne, etc.
The emulsion preferably contains a thixotropic agent which is compatible with water, e.g. types of silica gel such as "AerosoV from Degussa, "Homoc& G 5V from Adriss, acetobutyrates, etc.
Suitable waste for addition to the emulsion is:
a] Mixed or umixed beads of ion exchange resins containing usual impurities - boron, lithium, ammonia, graphite, iron, etc. - having in general acidic pH values [but in some cases slightly basic].
bl Concentrates containing in general a high percentage of boric acid neutralized with sodium hydroxide to a pH value between 7 and 9 with a secondary product such as anti-foaming agents, detergents, oxalic acid, citric acid, potassium chromate, etc.
cl Decontaminated slurries as basic or acidic mixtures or solutions with impurities of e.g. chromates, borates, oxalates, graphite, iron, manganese dioxide, etc.
d] In principle all low, average or highly radioactive waste.
el Other chemical waste.
The waste containing emulsion can be mixed with cement to form blocks or it can be coated, e.g. by the coating process described in Swiss Patent No. [Patent Application No. 2329183 filed on 29th April 19831. The process of the invention provides forthe preparation of a mixture which contains waste [e.g. radioactive waste] in saturation with its storage water, a resin and a monomer to form an emulsion, said emulsion containing the waste, the water contained in the waste, the resin and the monomer, and a hydraulic binding agent added to the emulsion to form a concrete.

Claims (13)

1. A process for the preparation of waste for transport and/or storage, especially chemical and/or radioactive waste, characterised in that a strong thixotropic emulsion having a small water content is provided and the waste in a liquid or semi-liquid form or in the form of a slurry is added to said emulsion.
2. The process of claim 1, wherein the emulsion additionally contains at least one flame retarding additive.
3. The process of claim 1 or 2, wherein the emulsion additionally contains at least one solidification catalyst which is stable at low temperatures, e.g. between 10 and WC, but which is active at high temperatures, e.g. at temperatures higher than WC.
2 GB 2 145 405 A 2
4. The process of claim 1, 2 ol-3, wherein the emulsion contains a thixotropic agent compatible with water, e.g. silica gel or acetobutyrate.
5. The process of claim 2, wherein the flame retarding additive is selected from one or more of aluminium trihydrate, trich loroethyl phosphate derivatives, chloro derivatives such as chlorinated paraffins, bromo derivatives such as decabromodiphenyloxide.
6. The process of claim 3, wherein the catalyst is tert-butyl benzoate or M-bis-[tert-butylperoxy]cycloxenane.
7. An emulsion for carrying out the process according to any of claims 1 to 6, characterised in that it contains a resin, a monomer and a thioxotropie agent.
8. The emulsion of claim 7, wherein the resin is an unsaturated polyester resin.
9. The emulsion of claim 7 or 8 wherein the monomer is unsaturated.
10. The emulsion of any of claims 7,8 or9 wherein the monomer has a high flash point.
11. The emulsion of any of clams 7to 10, additionally containing at least one flame retarding agent.
12. The emulsion of any of claims 7to 11, additionally containing at least one solidification catalyst which is stable at low temperatures and active at high temperatures.
13. The processof anyoneof claims 1 to 6, wherein the emulsion containing the waste is mixed with a hydraulic cementing agent, e.g. cement, to form concrete blocks.
Printed in the UK for HMSO, D8818935,1.85,7102. Published by The Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained.
GB08421377A 1983-08-23 1984-08-23 Process for the preparation of waste for transport and/or storage Expired GB2145405B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4599/83A CH656539A5 (en) 1983-08-23 1983-08-23 PROCESS FOR TREATMENT OF CHEMICAL OR RADIOACTIVE WASTE.

Publications (3)

Publication Number Publication Date
GB8421377D0 GB8421377D0 (en) 1984-09-26
GB2145405A true GB2145405A (en) 1985-03-27
GB2145405B GB2145405B (en) 1987-02-04

Family

ID=4279098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08421377A Expired GB2145405B (en) 1983-08-23 1984-08-23 Process for the preparation of waste for transport and/or storage

Country Status (11)

Country Link
EP (1) EP0136496A3 (en)
JP (1) JPS6122300A (en)
CH (1) CH656539A5 (en)
DE (1) DE3430165A1 (en)
FR (1) FR2550969A1 (en)
GB (1) GB2145405B (en)
IL (1) IL72751A (en)
IT (1) IT1213210B (en)
NL (1) NL8402581A (en)
SE (1) SE8404187L (en)
ZA (1) ZA846523B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179645A (en) * 1985-08-02 1987-03-11 Alexander George Copson Waste management system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439173A1 (en) * 1994-11-07 1996-05-09 C & E Consulting Und Engineeri Immobilisation of harmful materials in dust or particle form
ITMI20010384A1 (en) 2001-02-26 2002-08-26 Ausimont Spa POROUS HYDROPHILIC MEMBRANES
ITMI20011062A1 (en) 2001-05-22 2002-11-22 Ausimont Spa FLUOROELASTOMERIC COMPOSITIONS
CN109545418B (en) * 2018-11-29 2022-05-06 中国船舶重工集团公司第七一九研究所 Radioactive waste liquid treatment system and method for offshore nuclear power platform

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046499A (en) * 1979-04-06 1980-11-12 Astor Chemical Ltd Encapsulation of radioactive waste
GB2095890A (en) * 1981-03-12 1982-10-06 Westinghouse Electric Corp Method of encapsulating waste radioactive material
WO1983001206A1 (en) * 1981-09-30 1983-04-14 Radian Corp Method of immobilizing organic contaminants and non-flowable matrix produced therefrom

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2366234A1 (en) * 1976-04-27 1978-04-28 Crouzet Pierre Building material contg. polyester - and siliceous material and a setting material e.g. hydraulic cement
US4077901A (en) * 1975-10-03 1978-03-07 Arnold John L Encapsulation of nuclear wastes
FR2361724A1 (en) * 1976-08-12 1978-03-10 Commissariat Energie Atomique STORAGE PROCESS FOR CONTAMINATED ION EXCHANGER RESINS
DE2717656A1 (en) * 1977-04-21 1978-10-26 Nukem Gmbh PROCESS FOR THE PRODUCTION OF LEAK-RESISTANT AND SALINE-RESISTANT BLOCKS FROM CEMENT AND RADIOACTIVE WASTE
EP0006329A1 (en) * 1978-06-08 1980-01-09 BP Chemicals Limited Encapsulating wastes
IT1195040B (en) * 1981-05-11 1988-09-28 Snial Resine Poliestere Spa Ca COMPOSITIONS OF MATTER CONTAINING RADIOACTIVE MATERIAL BASED ON ION EXCHANGERS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046499A (en) * 1979-04-06 1980-11-12 Astor Chemical Ltd Encapsulation of radioactive waste
GB2095890A (en) * 1981-03-12 1982-10-06 Westinghouse Electric Corp Method of encapsulating waste radioactive material
WO1983001206A1 (en) * 1981-09-30 1983-04-14 Radian Corp Method of immobilizing organic contaminants and non-flowable matrix produced therefrom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179645A (en) * 1985-08-02 1987-03-11 Alexander George Copson Waste management system

Also Published As

Publication number Publication date
SE8404187D0 (en) 1984-08-22
FR2550969A1 (en) 1985-03-01
IT8422394A0 (en) 1984-08-23
ZA846523B (en) 1985-04-24
EP0136496A2 (en) 1985-04-10
NL8402581A (en) 1985-03-18
IT1213210B (en) 1989-12-14
JPS6122300A (en) 1986-01-30
DE3430165A1 (en) 1985-03-14
GB2145405B (en) 1987-02-04
EP0136496A3 (en) 1986-03-19
CH656539A5 (en) 1986-07-15
IL72751A (en) 1988-06-30
SE8404187L (en) 1985-02-24
GB8421377D0 (en) 1984-09-26

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee