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Method of complete restoration of sorption capacity of exhausted active carbon

Innovation Type - Method

Potential beneficiaries - Waste water treatment plants and water preparation plants

WHY RE-ESTABLISHING OF ACTIVE CARBON CAPACITY WHILE IT CAN EASILY BE PURCHASED?

The problem of waste water treatment and environmental polution is among the most actual and acute. Annually our country imports about 300 tons of active carbon at the cost of 5,200 $/tone. Active carbon is broadly used in the process of surface water and waste water treatment. <>br We propose a new adsorption method for the low cost protection of environment. The invention implies the regeneration of exhausted active carbon capacity.
The proposed technology is characterized by the interaction of absorbed substances in the microwave field with water vapour and oxygen from the air, which are transformed into the non-toxic simple substances and de-blockade the pores of active carbon. The process of active carbon treatment consists in irradiation of exhausted carbon with microwaves 600-1000W during 10-35 minutes in discontiniuos regime, 7-14 times with 4-6 minutes intervals. The humidity of carbon subjected to regeneration is about 10%.

ADVANTAGES

  • Complete restoration of sorption capacity of exhausted active carbon;
  • Costs of regeneration are substantially lower than the costs of procuring of a new active carbon;
  • Environmental protection is provided!

Current stage of development - Bench-scale tests

Desired collaboration - Partnership and investments

Invention Title: Method of exhausted active carbon regeneration
Holder: Institute of Chemistry of Academy of Sciences of Moldova
Authors: Tudor LUPASCU, Vasile RUSU, Ludmila STARIS, Larisa MEREUTA-POSTOLACHI
Brevet: 2333
Priority date: 20.02.2003
Address: mun. Chisinau, str. Academiei 3
Contact telephone (373-22) 72 54 90, 73 99 54
Email: ichem@asm.md


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