Characterization and Pb(II) removal potential of corn straw- and municipal sludge-derived biochars
Corn straw- and municipal sludge-derived biochars (CS-BC and MS-BC, respectively) were used to remove Pb(II) from aqueous solutions. Despite being pyrolysed at the same temperature (723 K), MS-BC showed higher porosity and hydrophobicity than CS-BC. The optimum biochar loading and pH values allowing...
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doaj-17365776493f42da89ab8f029eb40a392020-11-25T03:59:24ZengThe Royal SocietyRoyal Society Open Science2054-57032017-01-014910.1098/rsos.170402170402Characterization and Pb(II) removal potential of corn straw- and municipal sludge-derived biocharsShujuan WangWei GuoFan GaoRui YangCorn straw- and municipal sludge-derived biochars (CS-BC and MS-BC, respectively) were used to remove Pb(II) from aqueous solutions. Despite being pyrolysed at the same temperature (723 K), MS-BC showed higher porosity and hydrophobicity than CS-BC. The optimum biochar loading and pH values allowing efficient Pb(II) removal (greater than 80%) were 0.2 g l−1 and 7.0, respectively. The presence of PO43− (greater than 0.01 mol l−1) significantly affected the adsorptive performance of Pb(II) on the biochar samples. The adsorption data fitted well to a pseudo-second-order kinetic model and a Langmuir model, and the maximum Pb(II) adsorption capacities were 352 and 387 mg g−1 for CS-BC and MS-BC, respectively. The main mechanisms involved in the adsorption of Pb(II) on biochar were electrostatic attraction and surface complexation. When comparing both biochars, CS-BC showed better cost-effectiveness for the removal of Pb(II) from aqueous solutions.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170402adsorptionleadbiocharsewage sludgepyrolysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shujuan Wang Wei Guo Fan Gao Rui Yang |
spellingShingle |
Shujuan Wang Wei Guo Fan Gao Rui Yang Characterization and Pb(II) removal potential of corn straw- and municipal sludge-derived biochars Royal Society Open Science adsorption lead biochar sewage sludge pyrolysis |
author_facet |
Shujuan Wang Wei Guo Fan Gao Rui Yang |
author_sort |
Shujuan Wang |
title |
Characterization and Pb(II) removal potential of corn straw- and municipal sludge-derived biochars |
title_short |
Characterization and Pb(II) removal potential of corn straw- and municipal sludge-derived biochars |
title_full |
Characterization and Pb(II) removal potential of corn straw- and municipal sludge-derived biochars |
title_fullStr |
Characterization and Pb(II) removal potential of corn straw- and municipal sludge-derived biochars |
title_full_unstemmed |
Characterization and Pb(II) removal potential of corn straw- and municipal sludge-derived biochars |
title_sort |
characterization and pb(ii) removal potential of corn straw- and municipal sludge-derived biochars |
publisher |
The Royal Society |
series |
Royal Society Open Science |
issn |
2054-5703 |
publishDate |
2017-01-01 |
description |
Corn straw- and municipal sludge-derived biochars (CS-BC and MS-BC, respectively) were used to remove Pb(II) from aqueous solutions. Despite being pyrolysed at the same temperature (723 K), MS-BC showed higher porosity and hydrophobicity than CS-BC. The optimum biochar loading and pH values allowing efficient Pb(II) removal (greater than 80%) were 0.2 g l−1 and 7.0, respectively. The presence of PO43− (greater than 0.01 mol l−1) significantly affected the adsorptive performance of Pb(II) on the biochar samples. The adsorption data fitted well to a pseudo-second-order kinetic model and a Langmuir model, and the maximum Pb(II) adsorption capacities were 352 and 387 mg g−1 for CS-BC and MS-BC, respectively. The main mechanisms involved in the adsorption of Pb(II) on biochar were electrostatic attraction and surface complexation. When comparing both biochars, CS-BC showed better cost-effectiveness for the removal of Pb(II) from aqueous solutions. |
topic |
adsorption lead biochar sewage sludge pyrolysis |
url |
https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170402 |
work_keys_str_mv |
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1724454237123903488 |