Dual-Modified Lignin-Assembled Multilayer Microsphere with Excellent Pb(2+) Capture
With the continuous research on lignin-based sorbents, there are still limitations in the research of spherical sorbents with a high adsorption capacity for Pb(2+). In order to solve the problem of low adsorption effect, alkali lignin (AL) was modified and assembled to increase the adsorption active...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319401/ http://www.ncbi.nlm.nih.gov/pubmed/35890601 https://doi.org/10.3390/polym14142824 |
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ftpubmed:oai:pubmedcentral.nih.gov:9319401 2023-05-15T16:01:57+02:00 Dual-Modified Lignin-Assembled Multilayer Microsphere with Excellent Pb(2+) Capture Zhang, Zhaohui Chen, Yehong Wu, Chaojun 2022-07-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319401/ http://www.ncbi.nlm.nih.gov/pubmed/35890601 https://doi.org/10.3390/polym14142824 en eng MDPI http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319401/ http://www.ncbi.nlm.nih.gov/pubmed/35890601 http://dx.doi.org/10.3390/polym14142824 © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). CC-BY Polymers (Basel) Article Text 2022 ftpubmed https://doi.org/10.3390/polym14142824 2022-07-31T03:07:14Z With the continuous research on lignin-based sorbents, there are still limitations in the research of spherical sorbents with a high adsorption capacity for Pb(2+). In order to solve the problem of low adsorption effect, alkali lignin (AL) was modified and assembled to increase the adsorption active sites. In this work, we used dual-modified lignin (DML) as a raw material to assemble a singular lignin-based multilayer microsphere (LMM) with sodium alginate (SA) and dopamine. The prepared adsorbent had various active functional groups and spherical structures; the specific surface area was 2.14 m(2)/g and the average pore size was 8.32 nm. The adsorption process followed the Freundlich isotherm and the second-order kinetic model. Therefore, the LMM adsorbed Pb(2+) ascribed by the electrostatic attraction and surface complexation; the adsorption capacity was 250 mg/g. The LMM showed a selective adsorption performance for Pb(2+) and the adsorption capacity followed the order Pb(2+) (187.4 mg/g) > Cu(2+)(168.0 mg/g) > Mn(2+)(166.5 mg/g). After three cycles, the removal efficiency of Pb(2+) by the LMM was 69.34%, indicating the reproducibility of LMM. Text DML PubMed Central (PMC) Polymers 14 14 2824 |
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Article Zhang, Zhaohui Chen, Yehong Wu, Chaojun Dual-Modified Lignin-Assembled Multilayer Microsphere with Excellent Pb(2+) Capture |
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With the continuous research on lignin-based sorbents, there are still limitations in the research of spherical sorbents with a high adsorption capacity for Pb(2+). In order to solve the problem of low adsorption effect, alkali lignin (AL) was modified and assembled to increase the adsorption active sites. In this work, we used dual-modified lignin (DML) as a raw material to assemble a singular lignin-based multilayer microsphere (LMM) with sodium alginate (SA) and dopamine. The prepared adsorbent had various active functional groups and spherical structures; the specific surface area was 2.14 m(2)/g and the average pore size was 8.32 nm. The adsorption process followed the Freundlich isotherm and the second-order kinetic model. Therefore, the LMM adsorbed Pb(2+) ascribed by the electrostatic attraction and surface complexation; the adsorption capacity was 250 mg/g. The LMM showed a selective adsorption performance for Pb(2+) and the adsorption capacity followed the order Pb(2+) (187.4 mg/g) > Cu(2+)(168.0 mg/g) > Mn(2+)(166.5 mg/g). After three cycles, the removal efficiency of Pb(2+) by the LMM was 69.34%, indicating the reproducibility of LMM. |
format |
Text |
author |
Zhang, Zhaohui Chen, Yehong Wu, Chaojun |
author_facet |
Zhang, Zhaohui Chen, Yehong Wu, Chaojun |
author_sort |
Zhang, Zhaohui |
title |
Dual-Modified Lignin-Assembled Multilayer Microsphere with Excellent Pb(2+) Capture |
title_short |
Dual-Modified Lignin-Assembled Multilayer Microsphere with Excellent Pb(2+) Capture |
title_full |
Dual-Modified Lignin-Assembled Multilayer Microsphere with Excellent Pb(2+) Capture |
title_fullStr |
Dual-Modified Lignin-Assembled Multilayer Microsphere with Excellent Pb(2+) Capture |
title_full_unstemmed |
Dual-Modified Lignin-Assembled Multilayer Microsphere with Excellent Pb(2+) Capture |
title_sort |
dual-modified lignin-assembled multilayer microsphere with excellent pb(2+) capture |
publisher |
MDPI |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319401/ http://www.ncbi.nlm.nih.gov/pubmed/35890601 https://doi.org/10.3390/polym14142824 |
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DML |
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DML |
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Polymers (Basel) |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9319401/ http://www.ncbi.nlm.nih.gov/pubmed/35890601 http://dx.doi.org/10.3390/polym14142824 |
op_rights |
© 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
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CC-BY |
op_doi |
https://doi.org/10.3390/polym14142824 |
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Polymers |
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14 |
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