The regulatory role of CO2 on nutrient releases from ashed rice straw phytoliths

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Anh T.Q. Nguyen
  • Anh M. Nguyen
  • Muu T. Nguyen
  • Hue T. Nguyen
  • Lim T. Duong
  • Van M. Dinh
  • Phuong M. Nguyen
  • Stefan Dultz
  • Minh N. Nguyen

Externe Organisationen

  • Vietnam National University
  • Hanoi University of Natural Resources & Environment (HUNRE)
  • Vietnamese Academy of Science and Technology
  • Vietnam National University of Forestry
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)35-47
Seitenumfang13
FachzeitschriftBIOGEOCHEMISTRY
Jahrgang160
Ausgabenummer1
Frühes Online-Datum14 Mai 2022
PublikationsstatusVeröffentlicht - Aug. 2022

Abstract

Phytolith is widely known as a silica structure in numerous silicon (Si) accumulator plants, e.g., rice, and it contains various nutrients and other beneficial elements. When rice straw is returned to paddy fields, the silica structure of phytolith can be dissolved, thereby releasing its occluded nutrients. While the intrinsic characteristics and dissolution properties of phytoliths under the effect of solution chemistry have been intensively studied, the effect of gas phases, especially CO2, on phytolith stability and the implications for nutrient release are not fully known. Here, dissolution properties of phytolith ashes obtained from dry ashing of rice straw at 400, 600 and 800 °C were investigated by quantifying Si release together with other nutrients under two atmospheric conditions, i.e., without and with CO2 support (aeration). In a time span of 6 days, the releases of nutrients (K, P, Ca, Mg) showed high dependence on the overall dissolution of the phytolith ashes. CO2 significantly reduced the dissolution rate of the phytolith ashes but increased the release rates of cationic as well as anionic nutrients. The aeration of CO2 shifted the carbonate equilibrium (H2CO3, HCO3 and CO32−) towards H2CO3, reducing solution pH, thereby decreasing the dissolution rate of phytoliths. Following this, intensification of H+ exchange promoted nutrient releases from the phytolith ashes. This indicates contrasted responses of phytoliths and their occluded nutrients to CO2, and provides a better insight on the fate of soil phytoliths and the tendency of nutrient budgets from rice straw phytoliths in soils.

ASJC Scopus Sachgebiete

Zitieren

The regulatory role of CO2 on nutrient releases from ashed rice straw phytoliths. / Nguyen, Anh T.Q.; Nguyen, Anh M.; Nguyen, Muu T. et al.
in: BIOGEOCHEMISTRY, Jahrgang 160, Nr. 1, 08.2022, S. 35-47.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Nguyen, ATQ, Nguyen, AM, Nguyen, MT, Nguyen, HT, Duong, LT, Dinh, VM, Nguyen, PM, Dultz, S & Nguyen, MN 2022, 'The regulatory role of CO2 on nutrient releases from ashed rice straw phytoliths', BIOGEOCHEMISTRY, Jg. 160, Nr. 1, S. 35-47. https://doi.org/10.1007/s10533-022-00938-4
Nguyen, A. T. Q., Nguyen, A. M., Nguyen, M. T., Nguyen, H. T., Duong, L. T., Dinh, V. M., Nguyen, P. M., Dultz, S., & Nguyen, M. N. (2022). The regulatory role of CO2 on nutrient releases from ashed rice straw phytoliths. BIOGEOCHEMISTRY, 160(1), 35-47. https://doi.org/10.1007/s10533-022-00938-4
Nguyen ATQ, Nguyen AM, Nguyen MT, Nguyen HT, Duong LT, Dinh VM et al. The regulatory role of CO2 on nutrient releases from ashed rice straw phytoliths. BIOGEOCHEMISTRY. 2022 Aug;160(1):35-47. Epub 2022 Mai 14. doi: 10.1007/s10533-022-00938-4
Nguyen, Anh T.Q. ; Nguyen, Anh M. ; Nguyen, Muu T. et al. / The regulatory role of CO2 on nutrient releases from ashed rice straw phytoliths. in: BIOGEOCHEMISTRY. 2022 ; Jahrgang 160, Nr. 1. S. 35-47.
Download
@article{dd45ac85a48a4a4cad263eaf1690d338,
title = "The regulatory role of CO2 on nutrient releases from ashed rice straw phytoliths",
abstract = "Phytolith is widely known as a silica structure in numerous silicon (Si) accumulator plants, e.g., rice, and it contains various nutrients and other beneficial elements. When rice straw is returned to paddy fields, the silica structure of phytolith can be dissolved, thereby releasing its occluded nutrients. While the intrinsic characteristics and dissolution properties of phytoliths under the effect of solution chemistry have been intensively studied, the effect of gas phases, especially CO2, on phytolith stability and the implications for nutrient release are not fully known. Here, dissolution properties of phytolith ashes obtained from dry ashing of rice straw at 400, 600 and 800 °C were investigated by quantifying Si release together with other nutrients under two atmospheric conditions, i.e., without and with CO2 support (aeration). In a time span of 6 days, the releases of nutrients (K, P, Ca, Mg) showed high dependence on the overall dissolution of the phytolith ashes. CO2 significantly reduced the dissolution rate of the phytolith ashes but increased the release rates of cationic as well as anionic nutrients. The aeration of CO2 shifted the carbonate equilibrium (H2CO3, HCO3− and CO32−) towards H2CO3, reducing solution pH, thereby decreasing the dissolution rate of phytoliths. Following this, intensification of H+ exchange promoted nutrient releases from the phytolith ashes. This indicates contrasted responses of phytoliths and their occluded nutrients to CO2, and provides a better insight on the fate of soil phytoliths and the tendency of nutrient budgets from rice straw phytoliths in soils.",
keywords = "Ashes, CO effects, Nutrient release, Phytolith, Rice straw",
author = "Nguyen, {Anh T.Q.} and Nguyen, {Anh M.} and Nguyen, {Muu T.} and Nguyen, {Hue T.} and Duong, {Lim T.} and Dinh, {Van M.} and Nguyen, {Phuong M.} and Stefan Dultz and Nguyen, {Minh N.}",
year = "2022",
month = aug,
doi = "10.1007/s10533-022-00938-4",
language = "English",
volume = "160",
pages = "35--47",
journal = "BIOGEOCHEMISTRY",
issn = "0168-2563",
publisher = "Springer Netherlands",
number = "1",

}

Download

TY - JOUR

T1 - The regulatory role of CO2 on nutrient releases from ashed rice straw phytoliths

AU - Nguyen, Anh T.Q.

AU - Nguyen, Anh M.

AU - Nguyen, Muu T.

AU - Nguyen, Hue T.

AU - Duong, Lim T.

AU - Dinh, Van M.

AU - Nguyen, Phuong M.

AU - Dultz, Stefan

AU - Nguyen, Minh N.

PY - 2022/8

Y1 - 2022/8

N2 - Phytolith is widely known as a silica structure in numerous silicon (Si) accumulator plants, e.g., rice, and it contains various nutrients and other beneficial elements. When rice straw is returned to paddy fields, the silica structure of phytolith can be dissolved, thereby releasing its occluded nutrients. While the intrinsic characteristics and dissolution properties of phytoliths under the effect of solution chemistry have been intensively studied, the effect of gas phases, especially CO2, on phytolith stability and the implications for nutrient release are not fully known. Here, dissolution properties of phytolith ashes obtained from dry ashing of rice straw at 400, 600 and 800 °C were investigated by quantifying Si release together with other nutrients under two atmospheric conditions, i.e., without and with CO2 support (aeration). In a time span of 6 days, the releases of nutrients (K, P, Ca, Mg) showed high dependence on the overall dissolution of the phytolith ashes. CO2 significantly reduced the dissolution rate of the phytolith ashes but increased the release rates of cationic as well as anionic nutrients. The aeration of CO2 shifted the carbonate equilibrium (H2CO3, HCO3− and CO32−) towards H2CO3, reducing solution pH, thereby decreasing the dissolution rate of phytoliths. Following this, intensification of H+ exchange promoted nutrient releases from the phytolith ashes. This indicates contrasted responses of phytoliths and their occluded nutrients to CO2, and provides a better insight on the fate of soil phytoliths and the tendency of nutrient budgets from rice straw phytoliths in soils.

AB - Phytolith is widely known as a silica structure in numerous silicon (Si) accumulator plants, e.g., rice, and it contains various nutrients and other beneficial elements. When rice straw is returned to paddy fields, the silica structure of phytolith can be dissolved, thereby releasing its occluded nutrients. While the intrinsic characteristics and dissolution properties of phytoliths under the effect of solution chemistry have been intensively studied, the effect of gas phases, especially CO2, on phytolith stability and the implications for nutrient release are not fully known. Here, dissolution properties of phytolith ashes obtained from dry ashing of rice straw at 400, 600 and 800 °C were investigated by quantifying Si release together with other nutrients under two atmospheric conditions, i.e., without and with CO2 support (aeration). In a time span of 6 days, the releases of nutrients (K, P, Ca, Mg) showed high dependence on the overall dissolution of the phytolith ashes. CO2 significantly reduced the dissolution rate of the phytolith ashes but increased the release rates of cationic as well as anionic nutrients. The aeration of CO2 shifted the carbonate equilibrium (H2CO3, HCO3− and CO32−) towards H2CO3, reducing solution pH, thereby decreasing the dissolution rate of phytoliths. Following this, intensification of H+ exchange promoted nutrient releases from the phytolith ashes. This indicates contrasted responses of phytoliths and their occluded nutrients to CO2, and provides a better insight on the fate of soil phytoliths and the tendency of nutrient budgets from rice straw phytoliths in soils.

KW - Ashes

KW - CO effects

KW - Nutrient release

KW - Phytolith

KW - Rice straw

UR - http://www.scopus.com/inward/record.url?scp=85130113739&partnerID=8YFLogxK

U2 - 10.1007/s10533-022-00938-4

DO - 10.1007/s10533-022-00938-4

M3 - Article

AN - SCOPUS:85130113739

VL - 160

SP - 35

EP - 47

JO - BIOGEOCHEMISTRY

JF - BIOGEOCHEMISTRY

SN - 0168-2563

IS - 1

ER -