Removal of Heavy Metals from an Actual Small Scale Gold Mining Wastewater by Sorption onto Cocopeat
Cocopeat, a by-product of coconut husk, was used as adsorbent material to remove mercury (Hg) and other heavy metals (As, Ba, Cd, Pb) from the wastewater gathered from the tailings collection tank of a ball mill facility at the small scale gold mining (SSGM) area in Camarines Norte province, Philipp...
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doaj-396e099285a34bcaa46ff595f17041152021-05-09T10:26:27ZengUniversitas Gadjah MadaASEAN Journal on Science and Technology for Development0217-54602224-90282019-04-013611710.29037/ajstd.558530Removal of Heavy Metals from an Actual Small Scale Gold Mining Wastewater by Sorption onto CocopeatJessie O. Samaniego0Maria Antonia N. Tanchuling1Department of Science and Technology – Philippine Nuclear Research Institute, Coomonwealth Ave., Quezon City, 1101, PhilippinesEnvironmental Engineering Graduate Program, University of the Philippines Diliman, Quezon City, 1101, PhilippinesCocopeat, a by-product of coconut husk, was used as adsorbent material to remove mercury (Hg) and other heavy metals (As, Ba, Cd, Pb) from the wastewater gathered from the tailings collection tank of a ball mill facility at the small scale gold mining (SSGM) area in Camarines Norte province, Philippines. Batch sorption tests were carried out using actual wastewater samples with reduced suspended solids collected after 60 min of settling and without modifying the pH and other parameters to simulate the actual condition in the field. Batch tests of water samples with an initial pH of 7.30 and adsorbent dose of 1.0 g cocopeat/L were tested for Lagergren first-order, pseudo-second-order, intra-particle diffusion, and Freundlich models to evaluate kinetic parameters and adsorption isotherms. The removal efficiencies obtained for the heavy metals after the equilibrium time of 240 min were 97.14%, 94.74%, 10.00%, 66.67%, and 27.01% for Hg, As, Ba, Cd, and Pb, respectively. The pseudo-second order kinetics model represented well the adsorption process as demonstrated with its higher correlation coefficients among the models.https://ajstd.org/index.php/ajstd/article/view/558adsorptioncocopeatheavy metalsssgmwastewater |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jessie O. Samaniego Maria Antonia N. Tanchuling |
spellingShingle |
Jessie O. Samaniego Maria Antonia N. Tanchuling Removal of Heavy Metals from an Actual Small Scale Gold Mining Wastewater by Sorption onto Cocopeat ASEAN Journal on Science and Technology for Development adsorption cocopeat heavy metals ssgm wastewater |
author_facet |
Jessie O. Samaniego Maria Antonia N. Tanchuling |
author_sort |
Jessie O. Samaniego |
title |
Removal of Heavy Metals from an Actual Small Scale Gold Mining Wastewater by Sorption onto Cocopeat |
title_short |
Removal of Heavy Metals from an Actual Small Scale Gold Mining Wastewater by Sorption onto Cocopeat |
title_full |
Removal of Heavy Metals from an Actual Small Scale Gold Mining Wastewater by Sorption onto Cocopeat |
title_fullStr |
Removal of Heavy Metals from an Actual Small Scale Gold Mining Wastewater by Sorption onto Cocopeat |
title_full_unstemmed |
Removal of Heavy Metals from an Actual Small Scale Gold Mining Wastewater by Sorption onto Cocopeat |
title_sort |
removal of heavy metals from an actual small scale gold mining wastewater by sorption onto cocopeat |
publisher |
Universitas Gadjah Mada |
series |
ASEAN Journal on Science and Technology for Development |
issn |
0217-5460 2224-9028 |
publishDate |
2019-04-01 |
description |
Cocopeat, a by-product of coconut husk, was used as adsorbent material to remove mercury (Hg) and other heavy metals (As, Ba, Cd, Pb) from the wastewater gathered from the tailings collection tank of a ball mill facility at the small scale gold mining (SSGM) area in Camarines Norte province, Philippines. Batch sorption tests were carried out using actual wastewater samples with reduced suspended solids collected after 60 min of settling and without modifying the pH and other parameters to simulate the actual condition in the field. Batch tests of water samples with an initial pH of 7.30 and adsorbent dose of 1.0 g cocopeat/L were tested for Lagergren first-order, pseudo-second-order, intra-particle diffusion, and Freundlich models to evaluate kinetic parameters and adsorption isotherms. The removal efficiencies obtained for the heavy metals after the equilibrium time of 240 min were 97.14%, 94.74%, 10.00%, 66.67%, and 27.01% for Hg, As, Ba, Cd, and Pb, respectively. The pseudo-second order kinetics model represented well the adsorption process as demonstrated with its higher correlation coefficients among the models. |
topic |
adsorption cocopeat heavy metals ssgm wastewater |
url |
https://ajstd.org/index.php/ajstd/article/view/558 |
work_keys_str_mv |
AT jessieosamaniego removalofheavymetalsfromanactualsmallscalegoldminingwastewaterbysorptionontococopeat AT mariaantoniantanchuling removalofheavymetalsfromanactualsmallscalegoldminingwastewaterbysorptionontococopeat |
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1721454692714676224 |