Single-stage production of miscanthus hydrochar at low severity conditions and application as adsorbent of copper and ammonium ions

Georgiou, Efthalia; Mihajlović, Marija; Petrović, Jelena; Anastopoulos, Ioannis; Dosche, Carsten; Pashalidis, Ioannis; Kalderis, Dimitrios

doi:10.1016/j.biortech.2021.125458

Cited by 18 publications

(7 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relationship between these biochar properties and NH + 4 binding capacity was also demonstrated with SW800, which had the highest CEC at 60.83 cmol c kg −1 , the second highest O/C ratio at 0.27, and the second highest NH + 4 binding capacity. Consistent with prior biochar studies (Fidel et al, 2018;Georgiou et al, 2021;Hu et al, 2020;Jing et al, 2019), these data suggest that NH + 4 is bound to biochar through electrostatic interactions. The demonstrated relationship between NH + 4 sorption and large O/C ratios and CECs is also consistent with prior studies (Gai et al, 2014;.…”

Section: Biochar Properties and Nutrient Removalsupporting

confidence: 88%

Biochar alters hydraulic conductivity and impacts nutrient leaching in two agricultural soils

Gelardi

Ainuddin

Rippner

et al. 2021

SOIL

View full text Add to dashboard Cite

Abstract. Biochar is purported to provide agricultural benefits when added to the soil, through changes in saturated hydraulic conductivity (Ksat) and increased nutrient retention through chemical or physical means. Despite increased interest and investigation, there remains uncertainty regarding the ability of biochar to deliver these agronomic benefits due to differences in biochar feedstock, production method, production temperature, and soil texture. In this project, a suite of experiments was carried out using biochars of diverse feedstocks and production temperatures, in order to determine the biochar parameters which may optimize agricultural benefits. Sorption experiments were performed with seven distinct biochars to determine sorption efficiencies for ammonium and nitrate. Only one biochar effectively retained nitrate, while all biochars bound ammonium. The three biochars with the highest binding capacities (produced from almond shell at 500 and 800 ∘C (AS500 and AS800) and softwood at 500 ∘C (SW500)) were chosen for column experiments. Biochars were amended to a sandy loam and a silt loam at 0 % and 2 % (w/w), and Ksat was measured. Biochars reduced Ksat in both soils by 64 %–80 %, with the exception of AS800, which increased Ksat by 98 % in the silt loam. Breakthrough curves for nitrate and ammonium, as well as leachate nutrient concentration, were also measured in the sandy loam columns. All biochars significantly decreased the quantity of ammonium in the leachate, by 22 % to 78 %, and slowed its movement through the soil profile. Ammonium retention was linked to high cation exchange capacity and a high oxygen-to-carbon ratio, indicating that the primary control of ammonium retention in biochar-amended soils is the chemical affinity between biochar surfaces and ammonium. Biochars had little to no effect on the timing of nitrate release, and only SW500 decreased total quantity, by 27 % to 36 %. The ability of biochar to retain nitrate may be linked to high micropore specific surface area, suggesting a physical entrapment rather than a chemical binding. Together, this work sheds new light on the combined chemical and physical means by which biochar may alter soils to impact nutrient leaching and hydraulic conductivity for agricultural production.

show abstract

Section: Biochar Properties and Nutrient Removalsupporting

confidence: 88%

Biochar alters hydraulic conductivity and impacts nutrient leaching in two agricultural soils

Gelardi

Ainuddin

Rippner

et al. 2021

SOIL

View full text Add to dashboard Cite

show abstract

“…FE-SEM images of CWH showed an irregular but porous surface morphology (Figure 2a,b). Hydrochars are typically amorphous materials with a low degree of crystallinity [14,15]. Following the deposition of Fe 3 O 4 , it was observed that CWH's surface morphology was not affected, but only covered by Fe 3 O 4 particles (Figure 2c,d).…”

Section: Characterizationmentioning

confidence: 99%

Preparation and Application of a Hydrochar-Based Palladium Nanocatalyst for the Reduction of Nitroarenes

et al. 2021

Self Cite

View full text Add to dashboard Cite

In the present study, a novel heterogeneous catalyst was successfully fabricated through the decoration of palladium nanoparticles on the surface of designed Fe3O4-coffee waste composite (Pd-Fe3O4-CWH) for the catalytic reduction of nitroarenes. Various characterization techniques such as XRD, FE-SEM and EDS were used to establish its nano-sized chemical structure. It was determined that Pd-Fe3O4-CWH is a useful nanocatalyst, which can efficiently reduce various nitroarenes, including 4-nitrobenzoic acid (4-NBA), 4-nitroaniline (4-NA), 4-nitro-o-phenylenediamine (4-NPD), 2-nitroaniline (2-NA) and 3-nitroanisole (3-NAS), using NaBH4 in aqueous media and ambient conditions. Catalytic reactions were monitored with the help of high-performance liquid chromatography. Additionally, Pd-Fe3O4-CWH was proved to be a reusable catalyst by maintaining its catalytic activity through six successive runs. Moreover, the nanocatalyst displayed a superior catalytic performance compared to other catalysts by providing a shorter reaction time to complete the reduction in nitroarenes.

show abstract

“…A great many works worldwide have been focused on the miscanthus processing. Some applications employ all fractions of the miscanthus biomass, for example, incineration for power generation [ 36 , 37 , 38 ] or pyrolysis for the production of bio-oil [ 39 , 40 ], biochar [ 41 , 42 ], hydrochar [ 43 , 44 ] and graphene oxide [ 45 ], for biopolyol synthesis [ 27 ] and for the production of composite materials [ 46 , 47 , 48 ], concrete [ 49 ], miscanthus-based mortar [ 50 ], fiber-reinforced screed [ 51 ] and bio-based PET [ 52 ].…”

Section: Core Directions In Miscanthus Researchmentioning

confidence: 99%

Recent Advances in Miscanthus Macromolecule Conversion: A Brief Overview

Mironova,

Budaeva,

Skiba

et al. 2023

IJMS

View full text Add to dashboard Cite

Miscanthus is a valuable renewable feedstock and has a significant potential for the manufacture of diverse biotechnology products based on macromolecules such as cellulose, hemicelluloses and lignin. Herein, we overviewed the state-of-the art of research on the conversion of miscanthus polymers into biotechnology products comprising low-molecular compounds and macromolecules: bioethanol, biogas, bacterial cellulose, enzymes (cellulases, laccases), lactic acid, lipids, fumaric acid and polyhydroxyalkanoates. The present review aims to assess the potential of converting miscanthus polymers in order to develop sustainable technologies.

show abstract

Single-stage production of miscanthus hydrochar at low severity conditions and application as adsorbent of copper and ammonium ions

Cited by 18 publications

References 47 publications

Biochar alters hydraulic conductivity and impacts nutrient leaching in two agricultural soils

Biochar alters hydraulic conductivity and impacts nutrient leaching in two agricultural soils

Preparation and Application of a Hydrochar-Based Palladium Nanocatalyst for the Reduction of Nitroarenes

Recent Advances in Miscanthus Macromolecule Conversion: A Brief Overview

Contact Info

Product

Resources

About