Pelletized rice-straw biochar as a slow-release delivery medium: Potential routes for storing and serving of phosphorus and potassium

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Van M. Dinh
  • Hue T. Nguyen
  • Anh M. Nguyen
  • Thuy T. Nguyen
  • Thanh Lan Nguyen
  • Daniel Uteau
  • Nam H. Nguyen
  • Tien M. Tran
  • Stefan Dultz
  • Minh N. Nguyen

Organisationseinheiten

Externe Organisationen

  • Vietnam National University
  • Vietnam National University of Forestry
  • Vietnamese Academy of Science and Technology
  • Technische Universität Darmstadt
  • Universität Kassel
  • Hanoi University of Technology
  • Vietnam Academy of Agricultural Sciences (Vaas)
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Details

OriginalspracheEnglisch
Aufsatznummer107237
FachzeitschriftJournal of Environmental Chemical Engineering
Jahrgang10
Ausgabenummer2
Frühes Online-Datum19 Jan. 2022
PublikationsstatusVeröffentlicht - Apr. 2022

Abstract

Recycling of straw in novel forms, e.g., slow release mediums, has increasingly gained attention. This study aimed to use rice straw for pellet fabrication and demonstrate the ability of pellets for slow delivery of phosphorus (P) and potassium (K). To increase the cohesiveness of the medium and to modify release properties, additions of diatomite and its mixture with bentonite were also tested. We fabricated three types of biochar pellets from different mixtures, i.e., ‘straw and NaH2PO4’ (9:1); ‘straw, NaH2PO4 and diatomite’ (8:1:1) and ‘straw, NaH2PO4, diatomite and bentonite’ (8:1:0.5:0.5) that were correspondingly named as S-pellet, SD-pellet and SDB-pellet. The kinetic experiments have revealed the performance of the pellets in delaying P and K releases. In the first 2 weeks, P and K concentrations released from S-pellet, SD-pellet and SDB-pellet were exponentially increased up to 156 and 163, 107 and 77, 113 and 75 mg L−1, respectively. The released P amounts at this stage were equal to 83.9%, 74.7% and 79.9% of the total P contents while those of K were equal to 81.7%, 53.6% and 52.3% of the total K contents in S-pellet, SD-pellet and SDB-pellet, respectively. All the major constituents in the pellets (phytolith, diatomite, bentonite) revealed their mutual interdependencies in regulating the overall release rates of P and K. The effective performance of the pellets could be an indication for a simple method to create slow-release fertilizers that can eventually bring more incentives to farmers to change their way to handle straw towards more high-tech or sustainable practices.

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Pelletized rice-straw biochar as a slow-release delivery medium: Potential routes for storing and serving of phosphorus and potassium. / Dinh, Van M.; Nguyen, Hue T.; Nguyen, Anh M. et al.
in: Journal of Environmental Chemical Engineering, Jahrgang 10, Nr. 2, 107237, 04.2022.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Dinh, VM, Nguyen, HT, Nguyen, AM, Nguyen, TT, Nguyen, TL, Uteau, D, Nguyen, NH, Tran, TM, Dultz, S & Nguyen, MN 2022, 'Pelletized rice-straw biochar as a slow-release delivery medium: Potential routes for storing and serving of phosphorus and potassium', Journal of Environmental Chemical Engineering, Jg. 10, Nr. 2, 107237. https://doi.org/10.1016/j.jece.2022.107237
Dinh, V. M., Nguyen, H. T., Nguyen, A. M., Nguyen, T. T., Nguyen, T. L., Uteau, D., Nguyen, N. H., Tran, T. M., Dultz, S., & Nguyen, M. N. (2022). Pelletized rice-straw biochar as a slow-release delivery medium: Potential routes for storing and serving of phosphorus and potassium. Journal of Environmental Chemical Engineering, 10(2), Artikel 107237. https://doi.org/10.1016/j.jece.2022.107237
Dinh VM, Nguyen HT, Nguyen AM, Nguyen TT, Nguyen TL, Uteau D et al. Pelletized rice-straw biochar as a slow-release delivery medium: Potential routes for storing and serving of phosphorus and potassium. Journal of Environmental Chemical Engineering. 2022 Apr;10(2):107237. Epub 2022 Jan 19. doi: 10.1016/j.jece.2022.107237
Dinh, Van M. ; Nguyen, Hue T. ; Nguyen, Anh M. et al. / Pelletized rice-straw biochar as a slow-release delivery medium : Potential routes for storing and serving of phosphorus and potassium. in: Journal of Environmental Chemical Engineering. 2022 ; Jahrgang 10, Nr. 2.
Download
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title = "Pelletized rice-straw biochar as a slow-release delivery medium: Potential routes for storing and serving of phosphorus and potassium",
abstract = "Recycling of straw in novel forms, e.g., slow release mediums, has increasingly gained attention. This study aimed to use rice straw for pellet fabrication and demonstrate the ability of pellets for slow delivery of phosphorus (P) and potassium (K). To increase the cohesiveness of the medium and to modify release properties, additions of diatomite and its mixture with bentonite were also tested. We fabricated three types of biochar pellets from different mixtures, i.e., {\textquoteleft}straw and NaH2PO4{\textquoteright} (9:1); {\textquoteleft}straw, NaH2PO4 and diatomite{\textquoteright} (8:1:1) and {\textquoteleft}straw, NaH2PO4, diatomite and bentonite{\textquoteright} (8:1:0.5:0.5) that were correspondingly named as S-pellet, SD-pellet and SDB-pellet. The kinetic experiments have revealed the performance of the pellets in delaying P and K releases. In the first 2 weeks, P and K concentrations released from S-pellet, SD-pellet and SDB-pellet were exponentially increased up to 156 and 163, 107 and 77, 113 and 75 mg L−1, respectively. The released P amounts at this stage were equal to 83.9%, 74.7% and 79.9% of the total P contents while those of K were equal to 81.7%, 53.6% and 52.3% of the total K contents in S-pellet, SD-pellet and SDB-pellet, respectively. All the major constituents in the pellets (phytolith, diatomite, bentonite) revealed their mutual interdependencies in regulating the overall release rates of P and K. The effective performance of the pellets could be an indication for a simple method to create slow-release fertilizers that can eventually bring more incentives to farmers to change their way to handle straw towards more high-tech or sustainable practices.",
keywords = "Bentonite amendment, Pelletization, Phosphorus, Potassium, Rice straw biochar, Slow-release fertilizer",
author = "Dinh, {Van M.} and Nguyen, {Hue T.} and Nguyen, {Anh M.} and Nguyen, {Thuy T.} and Nguyen, {Thanh Lan} and Daniel Uteau and Nguyen, {Nam H.} and Tran, {Tien M.} and Stefan Dultz and Nguyen, {Minh N.}",
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doi = "10.1016/j.jece.2022.107237",
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Download

TY - JOUR

T1 - Pelletized rice-straw biochar as a slow-release delivery medium

T2 - Potential routes for storing and serving of phosphorus and potassium

AU - Dinh, Van M.

AU - Nguyen, Hue T.

AU - Nguyen, Anh M.

AU - Nguyen, Thuy T.

AU - Nguyen, Thanh Lan

AU - Uteau, Daniel

AU - Nguyen, Nam H.

AU - Tran, Tien M.

AU - Dultz, Stefan

AU - Nguyen, Minh N.

N1 - Funding Information: This research was funded by the Vietnam National Foundation for Science & Technology Development (NAFOSTED) under grant 105.08-2018.300 with additional support from the Postdoc Program of NAFOSTED under grant 13/2020/STS02 .

PY - 2022/4

Y1 - 2022/4

N2 - Recycling of straw in novel forms, e.g., slow release mediums, has increasingly gained attention. This study aimed to use rice straw for pellet fabrication and demonstrate the ability of pellets for slow delivery of phosphorus (P) and potassium (K). To increase the cohesiveness of the medium and to modify release properties, additions of diatomite and its mixture with bentonite were also tested. We fabricated three types of biochar pellets from different mixtures, i.e., ‘straw and NaH2PO4’ (9:1); ‘straw, NaH2PO4 and diatomite’ (8:1:1) and ‘straw, NaH2PO4, diatomite and bentonite’ (8:1:0.5:0.5) that were correspondingly named as S-pellet, SD-pellet and SDB-pellet. The kinetic experiments have revealed the performance of the pellets in delaying P and K releases. In the first 2 weeks, P and K concentrations released from S-pellet, SD-pellet and SDB-pellet were exponentially increased up to 156 and 163, 107 and 77, 113 and 75 mg L−1, respectively. The released P amounts at this stage were equal to 83.9%, 74.7% and 79.9% of the total P contents while those of K were equal to 81.7%, 53.6% and 52.3% of the total K contents in S-pellet, SD-pellet and SDB-pellet, respectively. All the major constituents in the pellets (phytolith, diatomite, bentonite) revealed their mutual interdependencies in regulating the overall release rates of P and K. The effective performance of the pellets could be an indication for a simple method to create slow-release fertilizers that can eventually bring more incentives to farmers to change their way to handle straw towards more high-tech or sustainable practices.

AB - Recycling of straw in novel forms, e.g., slow release mediums, has increasingly gained attention. This study aimed to use rice straw for pellet fabrication and demonstrate the ability of pellets for slow delivery of phosphorus (P) and potassium (K). To increase the cohesiveness of the medium and to modify release properties, additions of diatomite and its mixture with bentonite were also tested. We fabricated three types of biochar pellets from different mixtures, i.e., ‘straw and NaH2PO4’ (9:1); ‘straw, NaH2PO4 and diatomite’ (8:1:1) and ‘straw, NaH2PO4, diatomite and bentonite’ (8:1:0.5:0.5) that were correspondingly named as S-pellet, SD-pellet and SDB-pellet. The kinetic experiments have revealed the performance of the pellets in delaying P and K releases. In the first 2 weeks, P and K concentrations released from S-pellet, SD-pellet and SDB-pellet were exponentially increased up to 156 and 163, 107 and 77, 113 and 75 mg L−1, respectively. The released P amounts at this stage were equal to 83.9%, 74.7% and 79.9% of the total P contents while those of K were equal to 81.7%, 53.6% and 52.3% of the total K contents in S-pellet, SD-pellet and SDB-pellet, respectively. All the major constituents in the pellets (phytolith, diatomite, bentonite) revealed their mutual interdependencies in regulating the overall release rates of P and K. The effective performance of the pellets could be an indication for a simple method to create slow-release fertilizers that can eventually bring more incentives to farmers to change their way to handle straw towards more high-tech or sustainable practices.

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