The study found that The right amount of activated carbon of heavy metal removal efficiency of charcoal, activated by NaCl is 80 g / L contact time 90 minutes. And the level you h proper is 4.5, charcoal, activated by KOH is 80 g / L contact time 90 minutes and level I h proper. Is 5 and charcoal does not stimulate is 110 g / L contact time 150 minutes and level I h is appropriate is 5.
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