A novel treatment of biogas digestate waste for biochar production and its adsorption of methylene blue and malachite green in a binary system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F25%3A102699" target="_blank" >RIV/60460709:41210/25:102699 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41340/25:102699

Výsledek na webu

<a href="https://scijournals.onlinelibrary.wiley.com/doi/10.1002/bbb.2772" target="_blank" >https://scijournals.onlinelibrary.wiley.com/doi/10.1002/bbb.2772</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/bbb.2772" target="_blank" >10.1002/bbb.2772</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A novel treatment of biogas digestate waste for biochar production and its adsorption of methylene blue and malachite green in a binary system

Popis výsledku v původním jazyce

This study presents a novel treatment of biogas digestate to produce biochar at processing temperatures of 500–700 °C. The resulting biochar was applied for the simultaneous removal of methylene blue (MB) and malachite green (MG) in a binary system. Characterization included metal element analysis, nitrogen adsorption/desorption isotherms, energy-dispersive X-ray spectroscopy with elemental mapping, scanning electron microscopy, and X-ray diffraction. The biochar exhibited a high surface area with a porous structure ranging from 1 to 20 µm in diameter. Due to spectral overlap between the dyes, a principal component multivariate regression-assisted spectrophotometric method was developed for their simultaneous determination in aqueous solution. Equilibrium data for the single-component systems were evaluated using the Langmuir, Freundlich, and Sips isotherm models, with the Langmuir model providing the best fit. For the two-component system, adsorption data were analyzed using the extended Langmuir (EL) model, the P-factor model, and three combination models based on ideal adsorbed solution theory (IAST): IAST-L (derived from the Langmuir isotherm), IAST-F (from the Freundlich isotherm), and IAST-S (from the Sips isotherm). The results showed that the simultaneous adsorption of MB and MG onto biogas digestate biochar (BDB) at 600 °C was best described by the IAST-L and IAST-F models. The maximum adsorption capacities in the single/binary systems, based on the Langmuir and IAST-L models, were approximately 0.136/0.103 for MG and 0.32/0.24 for MB at 303 K. A thermodynamic analysis was also conducted. The desorption of MG and MB by BDB at 600 °C (BDB-600) with methanol solvent exceeded 86% and 90% in the first adsorption/desorption cycle and did not decrease significantly after three cycles. The results of this research open up a new recycling route for the disposal of biogas digestate waste and its application as a sustainable alternative for the simultaneous removal of dyes.

Název v anglickém jazyce

A novel treatment of biogas digestate waste for biochar production and its adsorption of methylene blue and malachite green in a binary system

Popis výsledku anglicky

This study presents a novel treatment of biogas digestate to produce biochar at processing temperatures of 500–700 °C. The resulting biochar was applied for the simultaneous removal of methylene blue (MB) and malachite green (MG) in a binary system. Characterization included metal element analysis, nitrogen adsorption/desorption isotherms, energy-dispersive X-ray spectroscopy with elemental mapping, scanning electron microscopy, and X-ray diffraction. The biochar exhibited a high surface area with a porous structure ranging from 1 to 20 µm in diameter. Due to spectral overlap between the dyes, a principal component multivariate regression-assisted spectrophotometric method was developed for their simultaneous determination in aqueous solution. Equilibrium data for the single-component systems were evaluated using the Langmuir, Freundlich, and Sips isotherm models, with the Langmuir model providing the best fit. For the two-component system, adsorption data were analyzed using the extended Langmuir (EL) model, the P-factor model, and three combination models based on ideal adsorbed solution theory (IAST): IAST-L (derived from the Langmuir isotherm), IAST-F (from the Freundlich isotherm), and IAST-S (from the Sips isotherm). The results showed that the simultaneous adsorption of MB and MG onto biogas digestate biochar (BDB) at 600 °C was best described by the IAST-L and IAST-F models. The maximum adsorption capacities in the single/binary systems, based on the Langmuir and IAST-L models, were approximately 0.136/0.103 for MG and 0.32/0.24 for MB at 303 K. A thermodynamic analysis was also conducted. The desorption of MG and MB by BDB at 600 °C (BDB-600) with methanol solvent exceeded 86% and 90% in the first adsorption/desorption cycle and did not decrease significantly after three cycles. The results of this research open up a new recycling route for the disposal of biogas digestate waste and its application as a sustainable alternative for the simultaneous removal of dyes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/TH79020003" target="_blank" >TH79020003: Zpracování Phosphogypsum na kritické suroviny</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Biofuels Bioproducts & Biorefining-Biofpr

ISSN

1932-104X

e-ISSN

1932-104X

Svazek periodika

19

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

18

Strana od-do

1728-1745

Kód UT WoS článku

001478501100001

EID výsledku v databázi Scopus

2-s2.0-105004319134