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Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal

Municipal sludge biochar (MSBC) can be used to absorb phosphorus in water for waste treatment. Nano-zero-valent zinc (nZVZ) was uniformly attached to MSBC to obtain a highly efficient phosphorus-absorbing composite material, nZVZ–MSBC. Characterization by FTIR, XPS, XRD, and BET showed that nZVZ was...

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Detalles Bibliográficos
Autores principales: Zhang, Yupeng, Zhang, Wenbo, Zhang, Hong, He, Dandan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10096133/
https://www.ncbi.nlm.nih.gov/pubmed/37049993
http://dx.doi.org/10.3390/molecules28073231
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author Zhang, Yupeng
Zhang, Wenbo
Zhang, Hong
He, Dandan
author_facet Zhang, Yupeng
Zhang, Wenbo
Zhang, Hong
He, Dandan
author_sort Zhang, Yupeng
collection PubMed
description Municipal sludge biochar (MSBC) can be used to absorb phosphorus in water for waste treatment. Nano-zero-valent zinc (nZVZ) was uniformly attached to MSBC to obtain a highly efficient phosphorus-absorbing composite material, nZVZ–MSBC. Characterization by FTIR, XPS, XRD, and BET showed that nZVZ was uniformly dispersed on the surface of the MSBC. Zinc loading was able to greatly improve the adsorption performance of MSBC for phosphorus. Adsorption experiments illustrated that the adsorption process conformed to the Langmuir model, and the maximum adsorption amount was 186.5 mg/g, which is much higher than that for other municipal sludge biochars. The adsorption process reached 80% of the maximum adsorption capacity at 90 min, and this gradually stabilized after 240 min; adsorption equilibrium was reached within 24 h. The optimum pH for adsorption was 5. The main adsorption mechanism was chemical adsorption, but physical adsorption, external diffusion, internal diffusion, and surface adsorption also played roles. The potential for application as an efficient adsorbent of phosphorus from water was confirmed. In addition, a novel strategy for municipal sludge disposal and resource utilization is provided.
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spelling pubmed-100961332023-04-13 Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal Zhang, Yupeng Zhang, Wenbo Zhang, Hong He, Dandan Molecules Article Municipal sludge biochar (MSBC) can be used to absorb phosphorus in water for waste treatment. Nano-zero-valent zinc (nZVZ) was uniformly attached to MSBC to obtain a highly efficient phosphorus-absorbing composite material, nZVZ–MSBC. Characterization by FTIR, XPS, XRD, and BET showed that nZVZ was uniformly dispersed on the surface of the MSBC. Zinc loading was able to greatly improve the adsorption performance of MSBC for phosphorus. Adsorption experiments illustrated that the adsorption process conformed to the Langmuir model, and the maximum adsorption amount was 186.5 mg/g, which is much higher than that for other municipal sludge biochars. The adsorption process reached 80% of the maximum adsorption capacity at 90 min, and this gradually stabilized after 240 min; adsorption equilibrium was reached within 24 h. The optimum pH for adsorption was 5. The main adsorption mechanism was chemical adsorption, but physical adsorption, external diffusion, internal diffusion, and surface adsorption also played roles. The potential for application as an efficient adsorbent of phosphorus from water was confirmed. In addition, a novel strategy for municipal sludge disposal and resource utilization is provided. MDPI 2023-04-04 /pmc/articles/PMC10096133/ /pubmed/37049993 http://dx.doi.org/10.3390/molecules28073231 Text en © 2023 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/).
spellingShingle Article
Zhang, Yupeng
Zhang, Wenbo
Zhang, Hong
He, Dandan
Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal
title Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal
title_full Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal
title_fullStr Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal
title_full_unstemmed Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal
title_short Nano-Zero-Valent Zinc-Modified Municipal Sludge Biochar for Phosphorus Removal
title_sort nano-zero-valent zinc-modified municipal sludge biochar for phosphorus removal
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10096133/
https://www.ncbi.nlm.nih.gov/pubmed/37049993
http://dx.doi.org/10.3390/molecules28073231
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