CA2251923A1 - Cleansing contaminants from a heterogeneous material using a sorption agent - Google Patents

Cleansing contaminants from a heterogeneous material using a sorption agent

Info

Publication number
CA2251923A1
CA2251923A1 CA002251923A CA2251923A CA2251923A1 CA 2251923 A1 CA2251923 A1 CA 2251923A1 CA 002251923 A CA002251923 A CA 002251923A CA 2251923 A CA2251923 A CA 2251923A CA 2251923 A1 CA2251923 A1 CA 2251923A1
Authority
CA
Canada
Prior art keywords
sorption agent
heterogeneous material
cleansing
contaminants
gravel
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
CA002251923A
Other languages
French (fr)
Other versions
CA2251923C (en
Inventor
Oyvind Bones
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.)
Sphagnum AS
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
Priority claimed from NO961511A external-priority patent/NO961511D0/en
Application filed by Individual filed Critical Individual
Publication of CA2251923A1 publication Critical patent/CA2251923A1/en
Application granted granted Critical
Publication of CA2251923C publication Critical patent/CA2251923C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

There is described a process for cleansing contaminants, such as oil, PCB, PAH, heavy metals and the like, from a heterogeneous material, such as sand, gravel, earth, oil gravel, asphalt, drill borings ("kaks") and the like. More specifically the invention relates to a process comprising the steps: i) that a sorption agent is added to the material, and that the material and the sorption agent are mixed/kneaded sufficiently for a considerable portion of the contamination to be extracted from the material and absorbed by the sorption agent, and that ii) thereafter the sorption agent is separated from the material on the basis of specific gravity/particle size by means of an applied flow of gas, so that the sorption agent is led with the flow and can be collected in a separate fraction.
CA002251923A 1996-04-17 1997-04-16 Cleansing contaminants from a heterogeneous material using a sorption agent Expired - Fee Related CA2251923C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO961511A NO961511D0 (en) 1996-04-17 1996-04-17 Contaminated pulp cleaning method
NO961511 1996-04-17
PCT/NO1997/000099 WO1997038805A1 (en) 1996-04-17 1997-04-16 Cleansing contaminants from a heterogeneous material using a sorption agent

Publications (2)

Publication Number Publication Date
CA2251923A1 true CA2251923A1 (en) 1997-10-23
CA2251923C CA2251923C (en) 2006-07-04

Family

ID=36648532

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002251923A Expired - Fee Related CA2251923C (en) 1996-04-17 1997-04-16 Cleansing contaminants from a heterogeneous material using a sorption agent

Country Status (1)

Country Link
CA (1) CA2251923C (en)

Also Published As

Publication number Publication date
CA2251923C (en) 2006-07-04

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20140416

MKLA Lapsed

Effective date: 20140416