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Facile Synthesis of Calcite-Impregnated Hydrochar with High Sorption Capacity for Cu(II) from Aqueous Solution
[Image: see text] Calcite-impregnated hydrochar (Ca-HC) was successfully synthesized by a one-step hydrothermal method and used as an adsorbent for Cu(II) remediation. Characterization techniques showed that Ca-HC contained calcite and oxygen-containing functional groups. A series of Cu(II) sorption...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6751695/ https://www.ncbi.nlm.nih.gov/pubmed/31552344 http://dx.doi.org/10.1021/acsomega.9b01805 |
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author | Chen, Xiao-qin Li, Bing Shen, Yang Guo, Jian-Zhong |
author_facet | Chen, Xiao-qin Li, Bing Shen, Yang Guo, Jian-Zhong |
author_sort | Chen, Xiao-qin |
collection | PubMed |
description | [Image: see text] Calcite-impregnated hydrochar (Ca-HC) was successfully synthesized by a one-step hydrothermal method and used as an adsorbent for Cu(II) remediation. Characterization techniques showed that Ca-HC contained calcite and oxygen-containing functional groups. A series of Cu(II) sorption experiments onto Ca-HC showed that the initial Cu(II) concentration, contact time, sorption temperature, and initial pH of the solution influenced the sorption of Cu(II). The actual achievable sorption capacity of Ca-HC for Cu(II) was 130.57 mg g(–1) at 303 K, and the sorption process obeyed the Langmuir model and pseudo-second-order kinetic equation. The precipitation and surface complexation rather than ion exchange were mainly ascribed to the removal of Cu(II) onto Ca-HC. The calcite provided the active site to produce posnjakite precipitation during the sorption process and enhance the sorption capacity of the hydrochar. Therefore, these results demonstrated that Ca-HC is an effective sorbent that can remove Cu(II) from water. |
format | Online Article Text |
id | pubmed-6751695 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-67516952019-09-24 Facile Synthesis of Calcite-Impregnated Hydrochar with High Sorption Capacity for Cu(II) from Aqueous Solution Chen, Xiao-qin Li, Bing Shen, Yang Guo, Jian-Zhong ACS Omega [Image: see text] Calcite-impregnated hydrochar (Ca-HC) was successfully synthesized by a one-step hydrothermal method and used as an adsorbent for Cu(II) remediation. Characterization techniques showed that Ca-HC contained calcite and oxygen-containing functional groups. A series of Cu(II) sorption experiments onto Ca-HC showed that the initial Cu(II) concentration, contact time, sorption temperature, and initial pH of the solution influenced the sorption of Cu(II). The actual achievable sorption capacity of Ca-HC for Cu(II) was 130.57 mg g(–1) at 303 K, and the sorption process obeyed the Langmuir model and pseudo-second-order kinetic equation. The precipitation and surface complexation rather than ion exchange were mainly ascribed to the removal of Cu(II) onto Ca-HC. The calcite provided the active site to produce posnjakite precipitation during the sorption process and enhance the sorption capacity of the hydrochar. Therefore, these results demonstrated that Ca-HC is an effective sorbent that can remove Cu(II) from water. American Chemical Society 2019-09-09 /pmc/articles/PMC6751695/ /pubmed/31552344 http://dx.doi.org/10.1021/acsomega.9b01805 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Chen, Xiao-qin Li, Bing Shen, Yang Guo, Jian-Zhong Facile Synthesis of Calcite-Impregnated Hydrochar with High Sorption Capacity for Cu(II) from Aqueous Solution |
title | Facile Synthesis of Calcite-Impregnated Hydrochar
with High Sorption Capacity for Cu(II) from Aqueous Solution |
title_full | Facile Synthesis of Calcite-Impregnated Hydrochar
with High Sorption Capacity for Cu(II) from Aqueous Solution |
title_fullStr | Facile Synthesis of Calcite-Impregnated Hydrochar
with High Sorption Capacity for Cu(II) from Aqueous Solution |
title_full_unstemmed | Facile Synthesis of Calcite-Impregnated Hydrochar
with High Sorption Capacity for Cu(II) from Aqueous Solution |
title_short | Facile Synthesis of Calcite-Impregnated Hydrochar
with High Sorption Capacity for Cu(II) from Aqueous Solution |
title_sort | facile synthesis of calcite-impregnated hydrochar
with high sorption capacity for cu(ii) from aqueous solution |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6751695/ https://www.ncbi.nlm.nih.gov/pubmed/31552344 http://dx.doi.org/10.1021/acsomega.9b01805 |
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