Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite

Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite

Abstract Sediment phosphorus (P) removal is crucial for the control of eutrophication, and the in-situ adsorption is an essential technique. In this study, modified maifanite (MMF) prepared by acidification, alkalization, salinization, calcination and combined modifications, respectively, were first...

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Autores principales: Zisen Liu, Yi Zhang, Fan Han, Pan Yan, Biyun Liu, Qiaohong Zhou, Fenli Min, Feng He, Zhenbin Wu
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2018
Materias:
Adsorption Rate
Fourier Transform Infrared (FTIR)
Adsorption Capacity
Modification Treatment
Combined Modifications
Medicine
R
Science
Q
Acceso en línea:https://doaj.org/article/7f8fbdd55b094183b6b4f9e3481bde39
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spelling oai:doaj.org-article:7f8fbdd55b094183b6b4f9e3481bde392021-12-02T15:07:48ZInvestigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite10.1038/s41598-018-34144-w2045-2322https://doaj.org/article/7f8fbdd55b094183b6b4f9e3481bde392018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-34144-whttps://doaj.org/toc/2045-2322Abstract Sediment phosphorus (P) removal is crucial for the control of eutrophication, and the in-situ adsorption is an essential technique. In this study, modified maifanite (MMF) prepared by acidification, alkalization, salinization, calcination and combined modifications, respectively, were first applied to treat sediment P. The morphology and microstructure of MMF samples were characterized by X-ray fluorescence (XRF), Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM) and Brunauer-Emmett-Teller (BET). Various adsorption parameters were tested, such as dosage of maifanite, time, operation pH and temperature. The adsorption mechanisms were also investigated and discussed. Results showed that CMMF-H2.5-400 (2.5 mol/L H2SO4 and calcined at 400 °C) exhibited the highest P adsorption capacity. Thus, it was selected as the in-situ adsorbent material to control the internal P loading. Under the optimal conditions of dynamic experiments, the adsorption rates of TP, IP, OP, Fe/Al-P and Ca-P by CMMF-H2.5-400 were 37.22%, 44.41%, 25.54%, 26.09% and 60.34%, respectively. The adsorption mechanisms analysis revealed that the adsorption of P onto CMMF-H2.5-400 mainly by ligand exchange. Results of this work indicated that the modification treatment could improve the adsorption capacity of maifanite, and CMMF-H2.5-400 could be further applied to eutrophication treatment.Zisen LiuYi ZhangFan HanPan YanBiyun LiuQiaohong ZhouFenli MinFeng HeZhenbin WuNature PortfolioarticleAdsorption RateFourier Transform Infrared (FTIR)Adsorption CapacityModification TreatmentCombined ModificationsMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-13 (2018)
institution DOAJ
collection DOAJ
language EN
topic Adsorption Rate
Fourier Transform Infrared (FTIR)
Adsorption Capacity
Modification Treatment
Combined Modifications
Medicine
R
Science
Q
spellingShingle Adsorption Rate
Fourier Transform Infrared (FTIR)
Adsorption Capacity
Modification Treatment
Combined Modifications
Medicine
R
Science
Q
Zisen Liu
Yi Zhang
Fan Han
Pan Yan
Biyun Liu
Qiaohong Zhou
Fenli Min
Feng He
Zhenbin Wu
Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite
description Abstract Sediment phosphorus (P) removal is crucial for the control of eutrophication, and the in-situ adsorption is an essential technique. In this study, modified maifanite (MMF) prepared by acidification, alkalization, salinization, calcination and combined modifications, respectively, were first applied to treat sediment P. The morphology and microstructure of MMF samples were characterized by X-ray fluorescence (XRF), Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM) and Brunauer-Emmett-Teller (BET). Various adsorption parameters were tested, such as dosage of maifanite, time, operation pH and temperature. The adsorption mechanisms were also investigated and discussed. Results showed that CMMF-H2.5-400 (2.5 mol/L H2SO4 and calcined at 400 °C) exhibited the highest P adsorption capacity. Thus, it was selected as the in-situ adsorbent material to control the internal P loading. Under the optimal conditions of dynamic experiments, the adsorption rates of TP, IP, OP, Fe/Al-P and Ca-P by CMMF-H2.5-400 were 37.22%, 44.41%, 25.54%, 26.09% and 60.34%, respectively. The adsorption mechanisms analysis revealed that the adsorption of P onto CMMF-H2.5-400 mainly by ligand exchange. Results of this work indicated that the modification treatment could improve the adsorption capacity of maifanite, and CMMF-H2.5-400 could be further applied to eutrophication treatment.
format article
author Zisen Liu
Yi Zhang
Fan Han
Pan Yan
Biyun Liu
Qiaohong Zhou
Fenli Min
Feng He
Zhenbin Wu
author_facet Zisen Liu
Yi Zhang
Fan Han
Pan Yan
Biyun Liu
Qiaohong Zhou
Fenli Min
Feng He
Zhenbin Wu
author_sort Zisen Liu
title Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite
title_short Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite
title_full Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite
title_fullStr Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite
title_full_unstemmed Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite
title_sort investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite
publisher Nature Portfolio
publishDate 2018
url https://doaj.org/article/7f8fbdd55b094183b6b4f9e3481bde39
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