Adsorption of Lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysis
Abstract The feasibility of using wood-derived biochar (BC) to remove Pb, Mn, and Cu from landfill leachate was investigated and modeled in this study. BC was produced under the pyrolytic temperature of 740 °C. The effect of contact time, BC dosage and particle size on adsorption of the heavy metals...
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doaj-571aff652d4044f6bc880b70d45379182020-11-25T03:35:50ZengBMCSustainable Environment Research2468-20392020-09-0130111610.1186/s42834-020-00061-9Adsorption of Lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysisAli Daryabeigi Zand0Maryam Rabiee Abyaneh1School of Environment, College of Engineering, University of TehranSchool of Environment, College of Engineering, University of TehranAbstract The feasibility of using wood-derived biochar (BC) to remove Pb, Mn, and Cu from landfill leachate was investigated and modeled in this study. BC was produced under the pyrolytic temperature of 740 °C. The effect of contact time, BC dosage and particle size on adsorption of the heavy metals onto BC was examined. BC was used in two forms i.e., pulverized (PWB) and crushed (CWB) to evaluate the effect of BC particle size on adsorption characteristics. The kinetics of Pb, Mn, and Cu adsorption onto PWB and CWB were assessed using the pseudo second-order and Elovich models, where both applied models could well describe the adsorption kinetics. Removal efficiencies of the heavy metals were increases by 1.2, 1.4, and 1.6 times, respectively, for Pb, Mn, and Cu, when PWB content of the leachate increased from 0.5 to 5 g L− 1. Equilibrium adsorption capacity of the heavy metals onto BC in leachate system was evaluated using the Langmuir, non-linearized Freundlich, linearized Freundlich, and Temkin isotherms and found to have the following order for PWB: Non-linearized Freundlich > Temkin > Langmuir > Linearized Freundlich. The Langmuir and linearized Freundlich models could not adequately represent adsorption of the heavy metals onto BC, especially for CWB. The highest removal of 88% was obtained for Pb, while the greatest adsorption intensity was found to be 1.58 mg g− 1 for Mn. Using the non-linearized Freundlich isotherm significantly reduced adsorption prediction error. The adsorption affinity of PWB for Pb, Mn, and Cu was greater than that of CWB in all treatments. Wood-derived BC is suggested to be used for the removal of heavy metals from landfill leachate as an economical adsorbent.http://link.springer.com/article/10.1186/s42834-020-00061-9AdsorptionBiocharLandfill leachateHeavy metalsLinearization error |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ali Daryabeigi Zand Maryam Rabiee Abyaneh |
spellingShingle |
Ali Daryabeigi Zand Maryam Rabiee Abyaneh Adsorption of Lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysis Sustainable Environment Research Adsorption Biochar Landfill leachate Heavy metals Linearization error |
author_facet |
Ali Daryabeigi Zand Maryam Rabiee Abyaneh |
author_sort |
Ali Daryabeigi Zand |
title |
Adsorption of Lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysis |
title_short |
Adsorption of Lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysis |
title_full |
Adsorption of Lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysis |
title_fullStr |
Adsorption of Lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysis |
title_full_unstemmed |
Adsorption of Lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysis |
title_sort |
adsorption of lead, manganese, and copper onto biochar in landfill leachate: implication of non-linear regression analysis |
publisher |
BMC |
series |
Sustainable Environment Research |
issn |
2468-2039 |
publishDate |
2020-09-01 |
description |
Abstract The feasibility of using wood-derived biochar (BC) to remove Pb, Mn, and Cu from landfill leachate was investigated and modeled in this study. BC was produced under the pyrolytic temperature of 740 °C. The effect of contact time, BC dosage and particle size on adsorption of the heavy metals onto BC was examined. BC was used in two forms i.e., pulverized (PWB) and crushed (CWB) to evaluate the effect of BC particle size on adsorption characteristics. The kinetics of Pb, Mn, and Cu adsorption onto PWB and CWB were assessed using the pseudo second-order and Elovich models, where both applied models could well describe the adsorption kinetics. Removal efficiencies of the heavy metals were increases by 1.2, 1.4, and 1.6 times, respectively, for Pb, Mn, and Cu, when PWB content of the leachate increased from 0.5 to 5 g L− 1. Equilibrium adsorption capacity of the heavy metals onto BC in leachate system was evaluated using the Langmuir, non-linearized Freundlich, linearized Freundlich, and Temkin isotherms and found to have the following order for PWB: Non-linearized Freundlich > Temkin > Langmuir > Linearized Freundlich. The Langmuir and linearized Freundlich models could not adequately represent adsorption of the heavy metals onto BC, especially for CWB. The highest removal of 88% was obtained for Pb, while the greatest adsorption intensity was found to be 1.58 mg g− 1 for Mn. Using the non-linearized Freundlich isotherm significantly reduced adsorption prediction error. The adsorption affinity of PWB for Pb, Mn, and Cu was greater than that of CWB in all treatments. Wood-derived BC is suggested to be used for the removal of heavy metals from landfill leachate as an economical adsorbent. |
topic |
Adsorption Biochar Landfill leachate Heavy metals Linearization error |
url |
http://link.springer.com/article/10.1186/s42834-020-00061-9 |
work_keys_str_mv |
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