Impact of catalytic hydrothermal treatment and Ca/Al-modified hydrochar on lability, sorption, and speciation of phosphorus in swine manure : Microscopic and spectroscopic investigations
Copyright © 2022 Elsevier Ltd. All rights reserved..
The effects of catalytic hydrothermal (HT) pretreatment on animal manure followed by the addition of hydrochar on the nutrients recovery have not yet been investigated using a combination of chemical, microscopic, and spectroscopic techniques. Therefore, a catalytic HT process was employed to pretreat swine manure without additives (manure-HT) and with H2O2 addition (manure-HT- H2O2) to improve the conversion efficiency of labile or organic phosphorus (P) to inorganic phase. Then, a Ca-Al layered double hydroxide hydrochar (Ca/Al LDHHC) derived from corn cob biomass was synthesized and applied to enhance P sorption. Scanning electron microscopy (SEM), and three-dimensional excitation emission matrix (3D-EEM), X-ray photoelectron spectroscopy (XPS), P k-edge X-ray absorption near edge structure (XANES), were used to elucidate the mechanisms of P release and capture. The H2O2 assisted HT treatment significantly enhanced the release of inorganic P (251.4 mg/L) as compared to the untreated manure (57.2 mg/L). The 3D-EEM analysis indicated that the labile or organic P was transformed and solubilized efficiently along with the deconstruction of manure components after the H2O2 assisted HT pretreatment. Application of Ca/Al LDH@HC improved the removal efficiency of P from the derived P-rich HT liquid. This sorption process was conformed to the pseudo-second-order model, suggesting that chemisorption was the primary mechanism. The results of SEM and P k-edge XANES exhibited that Ca, as the dominated metal component, could act as a reaction site for the formation of phosphate precipitation. These results provide critical findings about recovering P from manure waste, which is useful for biowastes management and nutrients utilization, and mitigating unintended P loss and potential environmental risks.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:299 |
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| Enthalten in: |
Environmental pollution (Barking, Essex : 1987) - 299(2022) vom: 15. Apr., Seite 118877 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
He, Xinyue [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 22.02.2022 Date Revised 22.02.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.envpol.2022.118877 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 100 | 1 | |a He, Xinyue |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Impact of catalytic hydrothermal treatment and Ca/Al-modified hydrochar on lability, sorption, and speciation of phosphorus in swine manure |b Microscopic and spectroscopic investigations |
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| 500 | |a Date Revised 22.02.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2022 Elsevier Ltd. All rights reserved. | ||
| 520 | |a The effects of catalytic hydrothermal (HT) pretreatment on animal manure followed by the addition of hydrochar on the nutrients recovery have not yet been investigated using a combination of chemical, microscopic, and spectroscopic techniques. Therefore, a catalytic HT process was employed to pretreat swine manure without additives (manure-HT) and with H2O2 addition (manure-HT- H2O2) to improve the conversion efficiency of labile or organic phosphorus (P) to inorganic phase. Then, a Ca-Al layered double hydroxide hydrochar (Ca/Al LDHHC) derived from corn cob biomass was synthesized and applied to enhance P sorption. Scanning electron microscopy (SEM), and three-dimensional excitation emission matrix (3D-EEM), X-ray photoelectron spectroscopy (XPS), P k-edge X-ray absorption near edge structure (XANES), were used to elucidate the mechanisms of P release and capture. The H2O2 assisted HT treatment significantly enhanced the release of inorganic P (251.4 mg/L) as compared to the untreated manure (57.2 mg/L). The 3D-EEM analysis indicated that the labile or organic P was transformed and solubilized efficiently along with the deconstruction of manure components after the H2O2 assisted HT pretreatment. Application of Ca/Al LDH@HC improved the removal efficiency of P from the derived P-rich HT liquid. This sorption process was conformed to the pseudo-second-order model, suggesting that chemisorption was the primary mechanism. The results of SEM and P k-edge XANES exhibited that Ca, as the dominated metal component, could act as a reaction site for the formation of phosphate precipitation. These results provide critical findings about recovering P from manure waste, which is useful for biowastes management and nutrients utilization, and mitigating unintended P loss and potential environmental risks | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Animal and agricultural biowastes | |
| 650 | 4 | |a Catalytic hydrothermal pretreatment | |
| 650 | 4 | |a Engineered hydrochar | |
| 650 | 4 | |a Manure waste management | |
| 650 | 4 | |a Phosphorus recovery | |
| 650 | 7 | |a Manure |2 NLM | |
| 650 | 7 | |a Phosphorus |2 NLM | |
| 650 | 7 | |a 27YLU75U4W |2 NLM | |
| 650 | 7 | |a Hydrogen Peroxide |2 NLM | |
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| 700 | 1 | |a Zhang, Tao |e verfasserin |4 aut | |
| 700 | 1 | |a Niu, Yingqi |e verfasserin |4 aut | |
| 700 | 1 | |a Xue, Qing |e verfasserin |4 aut | |
| 700 | 1 | |a Ali, Esmat F |e verfasserin |4 aut | |
| 700 | 1 | |a Shaheen, Sabry M |e verfasserin |4 aut | |
| 700 | 1 | |a Tsang, Daniel C W |e verfasserin |4 aut | |
| 700 | 1 | |a Rinklebe, Jörg |e verfasserin |4 aut | |
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