Process for modifying the porous structure of activated coal impregnated with Cu(II) and its use for the treatment of underground waters from hydrogen sulfide and sulfides
The invention relates to processes for modifying the porous structure of activated coals impregnated with Cu(II) and their use for the treatment by catalytic oxidation of underground waters from hydrogen sulfide and sulfides.The process for modifying the porous structure of activated coal impregnate...
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Zusammenfassung: | The invention relates to processes for modifying the porous structure of activated coals impregnated with Cu(II) and their use for the treatment by catalytic oxidation of underground waters from hydrogen sulfide and sulfides.The process for modifying the porous structure of activated coal impregnated with Cu(II) includes the mechanical agitation for one hour at room temperature of an adsorbent suspension in demineralized water with concomitant barbotage of oxygen. As a result is reduced the specific surface and volume of adsorbent micropores.The process for treatment of underground waters from hydrogen sulfide and sulfides by catalytic oxidation includes the addition in the underground water of activated coal impregnated with Cu(II), with a modified porous structure according to the above-mentioned process, the mechanical mixing of the coal-water suspension for an hour at room temperature with concomitant barbotage of oxygen, afterwards the activated coal is separated from the treated water for a possible reuse in a new cycle of treatment.Use of the adsorbent with the modified in that way porous structure excludes the formation of sulfur on its surface, which indicates an increase of the catalytic activity of such adsorbent.
Invenţia se referă la procedee de modificare a structurii poroase a cărbunilor activi impregnaţi cu Cu(II) şi la utilizarea acestora pentru purificarea prin oxidare catalitică a apelor subterane de hidrogen sulfurat şi sulfuri.Procedeul de modificare a structurii poroase a cărbunelui activ impregnat cu Cu(II) include malaxarea mecanică timp de o oră la temperatura camerei a unei suspensii de adsorbant în apă demineralizată cu barbotarea concomitentă a oxigenului. Ca rezultat se micşorează suprafaţa specifică şi volumul microporilor adsorbantului.Procedeul de purificare a apelor subterane de hidrogen sulfurat şi sulfuri prin oxidare catalitică include adăugarea în apa subterană a cărbunelui activ impregnat cu Cu(II), cu structura poroasă modificată conform procedeului sus-menţionat, malaxarea mecanică a suspensiei cărbune-apă, timp de o oră la temperatura camerei cu barbotarea concomitentă a oxigenului, după care se separă cărbunele activ de apa purificată pentru o eventuală reutilizare într-un nou ciclu de purificare.Utilizarea adsorbantului cu structura poroasă astfel modificată exclude formarea sulfului pe suprafaţa lui, ce indică asupra sporirii activităţii catalitice a unui astfel de adsorbant.
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