Precipitation of heavy metals by lime mud waste of pulp and paper mill
Precipitation of heavy metals in synthetic and actual wastewater with lime mud (solid waste generated from the pulp and paper production process) was experimented using Jar-tests. Separate synthetic wastewater samples were prepared for each of the following heavy metals: lead (1,433.7 mgPb2+/L), chr...
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Prince of Songkla University
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doaj-4ede468457bd44149a88eac8b5a1679b2020-11-25T00:50:01ZengPrince of Songkla UniversitySongklanakarin Journal of Science and Technology (SJST)0125-33952004-02-0126Suppl.4553Precipitation of heavy metals by lime mud waste of pulp and paper millPuek TantriratnaNetnapid TantemsapyaWanpen WirojanagudPrecipitation of heavy metals in synthetic and actual wastewater with lime mud (solid waste generated from the pulp and paper production process) was experimented using Jar-tests. Separate synthetic wastewater samples were prepared for each of the following heavy metals: lead (1,433.7 mgPb2+/L), chromium (506.7 mgCr3+/L), cadmium (1,095 mgCd2+/L) and mercury (9.37 mgHg2+/L). The actual wastewater was tanning wastewater containing 74.49 mgCr3+/L and COD wastewater containing 683 mgHg2+/L. Adjustments of pH in the acidic range, pH 2-7, were made for each type of synthetic wastewater except for the Hg synthetic wastewater. The optimum conditions obtained from the tests of the synthetic wastewater were used for theactual wastewater samples. Precipitation of heavy metals with lime mud was effective as indicated by the removal efficiency as high as 90% up for Pb, Cd and Hg and 100% for Cr. However, the removal efficiency for the Hg-COD wastewater was only 67%. The precipitating pH was in the range of 10 up, which is the common pH range for metal carbonate precipitation. The optimum dosage of lime mud for Pb, Cr, Cd and Hg synthetic wastewater was 0.4-1.0 g/L, 2.0-4.0 g/L, 1.6-2.0g/L and 0.8 g/L, respectively. While the optimum dosage of lime mud for precipitating chromium in tanning wastewater was 3.8 g/L and 3.6 g/L for precipitating mercury in COD wastewater.http://www.sjst.psu.ac.th/journal/envi/05-metal-papermill.pdflime mudpulp and paperprecipitationheavy metal |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Puek Tantriratna Netnapid Tantemsapya Wanpen Wirojanagud |
spellingShingle |
Puek Tantriratna Netnapid Tantemsapya Wanpen Wirojanagud Precipitation of heavy metals by lime mud waste of pulp and paper mill Songklanakarin Journal of Science and Technology (SJST) lime mud pulp and paper precipitation heavy metal |
author_facet |
Puek Tantriratna Netnapid Tantemsapya Wanpen Wirojanagud |
author_sort |
Puek Tantriratna |
title |
Precipitation of heavy metals by lime mud waste of pulp and paper mill |
title_short |
Precipitation of heavy metals by lime mud waste of pulp and paper mill |
title_full |
Precipitation of heavy metals by lime mud waste of pulp and paper mill |
title_fullStr |
Precipitation of heavy metals by lime mud waste of pulp and paper mill |
title_full_unstemmed |
Precipitation of heavy metals by lime mud waste of pulp and paper mill |
title_sort |
precipitation of heavy metals by lime mud waste of pulp and paper mill |
publisher |
Prince of Songkla University |
series |
Songklanakarin Journal of Science and Technology (SJST) |
issn |
0125-3395 |
publishDate |
2004-02-01 |
description |
Precipitation of heavy metals in synthetic and actual wastewater with lime mud (solid waste generated from the pulp and paper production process) was experimented using Jar-tests. Separate synthetic wastewater samples were prepared for each of the following heavy metals: lead (1,433.7 mgPb2+/L), chromium (506.7 mgCr3+/L), cadmium (1,095 mgCd2+/L) and mercury (9.37 mgHg2+/L). The actual wastewater was tanning wastewater containing 74.49 mgCr3+/L and COD wastewater containing 683 mgHg2+/L. Adjustments of pH in the acidic range, pH 2-7, were made for each type of synthetic wastewater except for the Hg synthetic wastewater. The optimum conditions obtained from the tests of the synthetic wastewater were used for theactual wastewater samples. Precipitation of heavy metals with lime mud was effective as indicated by the removal efficiency as high as 90% up for Pb, Cd and Hg and 100% for Cr. However, the removal efficiency for the Hg-COD wastewater was only 67%. The precipitating pH was in the range of 10 up, which is the common pH range for metal carbonate precipitation. The optimum dosage of lime mud for Pb, Cr, Cd and Hg synthetic wastewater was 0.4-1.0 g/L, 2.0-4.0 g/L, 1.6-2.0g/L and 0.8 g/L, respectively. While the optimum dosage of lime mud for precipitating chromium in tanning wastewater was 3.8 g/L and 3.6 g/L for precipitating mercury in COD wastewater. |
topic |
lime mud pulp and paper precipitation heavy metal |
url |
http://www.sjst.psu.ac.th/journal/envi/05-metal-papermill.pdf |
work_keys_str_mv |
AT puektantriratna precipitationofheavymetalsbylimemudwasteofpulpandpapermill AT netnapidtantemsapya precipitationofheavymetalsbylimemudwasteofpulpandpapermill AT wanpenwirojanagud precipitationofheavymetalsbylimemudwasteofpulpandpapermill |
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