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Dainius Paliulis, Jovita Bubėnaitė
Effect of pH for lead removal from polluted water applying peat
| Conference Information: |
9th International Conference on Environmental
Engineering, MAY 22-23, 2014 Vilnius, LITHUANIA |
| Source: |
ICEE-2014 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
ISSN 2029-7092 online |
| ISBN: |
978-609-457-640-9 / 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
Sorption is often applied as heavy metals removal from polluted water method. However, still remain the need for low cost, efficient
sorbents, which are able to remove heavy metal ions from contaminated water. In the present work cheap biological material – peat have
been investigated with respect to its capacity to adsorb metals from contaminated waters. The peat showed the high sorption capacity for
lead form single-metal solutions.
The key parameters characterizing sorbent and affecting its sorption properties –average values of total carbon, pH were determined –
TC(peat) =51.83%, pHKCl
= 4.80, pHH2O = 5.90. Determined quantity of lead in dry peat is equal to 3.31 ppm. Average value of moisture
of peat was 44.67%. Modelling solution was used in research, inserting a known quantity of Pb salt and identifying peat sorption capacity
under static conditions, after 72 hours. Effect of pH (pH = 2, pH = 4 and pH = 6) for lead removal from aqueous solution was studied.
Best adsorption of Pb from aqueous solution applying peat was fixed when pH = 4 and pH = 6. The results of the research showed that
maximum sorption capacity of peat is reached at pH = 4 and is equal to 9.976 mg/g.
Keywords:heavy metals; peat; sorption; lead; pH.
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