Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe(2)O(3) and α-FeOOH: Sorption characteristics and mechanisms

A novel approach was employed to load α-Fe(2)O(3) and α-FeOOH onto sewage sludge biochar (SBC) with the purpose of efficient nickel (Ni) removal. A high Ni(II) adsorption capacity of 35.50 mg·g(-1) in 100 ppm Ni(II) solution with 10 mg modified sewage sludge biochar (MSBC) was achieved. The adsorpti...

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Autores principales: Yang, Lie, He, Liuyang, Xue, Jianming, Wu, Li, Ma, Yongfei, Li, Hong, Peng, Pai, Li, Ming, Zhang, Zulin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561682/
https://www.ncbi.nlm.nih.gov/pubmed/31188870
http://dx.doi.org/10.1371/journal.pone.0218114
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author Yang, Lie
He, Liuyang
Xue, Jianming
Wu, Li
Ma, Yongfei
Li, Hong
Peng, Pai
Li, Ming
Zhang, Zulin
author_facet Yang, Lie
He, Liuyang
Xue, Jianming
Wu, Li
Ma, Yongfei
Li, Hong
Peng, Pai
Li, Ming
Zhang, Zulin
author_sort Yang, Lie
collection PubMed
description A novel approach was employed to load α-Fe(2)O(3) and α-FeOOH onto sewage sludge biochar (SBC) with the purpose of efficient nickel (Ni) removal. A high Ni(II) adsorption capacity of 35.50 mg·g(-1) in 100 ppm Ni(II) solution with 10 mg modified sewage sludge biochar (MSBC) was achieved. The adsorption kinetic and isotherm were fitted well by the pseudo-second-order model and the Langmuir model, respectively. The optimal pH was found around a neutral pH of 7. The adsorption mechanisms of Ni(II) onto MSBC were described as the synergistic effects of electrostatic attraction, ion exchange, inner-sphere complexation and co-precipitation. The initial rapid adsorption phenomenon could be attributed to electrostatic attraction and ion exchange, and then inner-sphere complexation and co-precipitation acted as a crucial role in the following step. The remarkable performance of MSBC provides an effective waste utilization approach to simultaneous sewage sludge recycle and Ni removal from aqueous solution.
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spelling pubmed-65616822019-06-20 Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe(2)O(3) and α-FeOOH: Sorption characteristics and mechanisms Yang, Lie He, Liuyang Xue, Jianming Wu, Li Ma, Yongfei Li, Hong Peng, Pai Li, Ming Zhang, Zulin PLoS One Research Article A novel approach was employed to load α-Fe(2)O(3) and α-FeOOH onto sewage sludge biochar (SBC) with the purpose of efficient nickel (Ni) removal. A high Ni(II) adsorption capacity of 35.50 mg·g(-1) in 100 ppm Ni(II) solution with 10 mg modified sewage sludge biochar (MSBC) was achieved. The adsorption kinetic and isotherm were fitted well by the pseudo-second-order model and the Langmuir model, respectively. The optimal pH was found around a neutral pH of 7. The adsorption mechanisms of Ni(II) onto MSBC were described as the synergistic effects of electrostatic attraction, ion exchange, inner-sphere complexation and co-precipitation. The initial rapid adsorption phenomenon could be attributed to electrostatic attraction and ion exchange, and then inner-sphere complexation and co-precipitation acted as a crucial role in the following step. The remarkable performance of MSBC provides an effective waste utilization approach to simultaneous sewage sludge recycle and Ni removal from aqueous solution. Public Library of Science 2019-06-12 /pmc/articles/PMC6561682/ /pubmed/31188870 http://dx.doi.org/10.1371/journal.pone.0218114 Text en © 2019 Yang et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Yang, Lie
He, Liuyang
Xue, Jianming
Wu, Li
Ma, Yongfei
Li, Hong
Peng, Pai
Li, Ming
Zhang, Zulin
Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe(2)O(3) and α-FeOOH: Sorption characteristics and mechanisms
title Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe(2)O(3) and α-FeOOH: Sorption characteristics and mechanisms
title_full Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe(2)O(3) and α-FeOOH: Sorption characteristics and mechanisms
title_fullStr Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe(2)O(3) and α-FeOOH: Sorption characteristics and mechanisms
title_full_unstemmed Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe(2)O(3) and α-FeOOH: Sorption characteristics and mechanisms
title_short Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe(2)O(3) and α-FeOOH: Sorption characteristics and mechanisms
title_sort highly efficient nickel (ii) removal by sewage sludge biochar supported α-fe(2)o(3) and α-feooh: sorption characteristics and mechanisms
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6561682/
https://www.ncbi.nlm.nih.gov/pubmed/31188870
http://dx.doi.org/10.1371/journal.pone.0218114
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