Influence of Intrinsic Properties of Lignocellulosic Feedstock on Adsorptive Properties of Biochar

Chemerys, Valeriia; Baltrėnaitė, Edita

doi:10.1061/(asce)ee.1943-7870.0001420

Cited by 8 publications

(5 citation statements)

References 33 publications

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“…These porous structures generate a large portion of the residual porosity (Gray et al 2014). Correspondingly, the higher lignin content of A. gerrardii may result in extra porosity in the biochar structure (Chemerys and Baltrėnaitė-Gedienė 2018). These data confirm that assessing the feedstock anatomical features provides a simple method for estimating the ability of biochar to retain water.…”

Section: Water Holding Capacitysupporting

confidence: 58%

“…This finding may be attributed to the enrichment of basic cations in the ashes with increased temperature, which may be associated with carbonates, oxides, and hydroxides (Yuan et al 2011) and a decrease in the concentration of acidic surface functional groups (Gezahegn et al 2019). Several studies found that the pH of biochar is related to the ash content, which increased at higher pyrolysis temperatures (Lehmann 2007;Chemerys and Baltrėnaitė 2018;Weber and Quicker 2018).…”

Section: Produced Biochar Characteristicsmentioning

confidence: 99%

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Biochar hydrological characteristics in related to branch wood properties

Suansa

Al-Mefarrej

Alshahrani

2021

BioRes

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Branch wood possesses unique properties that may affect biochar characteristics. Despite the abundance of broad studies on biochar, the correlation between feedstock properties and biochar hydrological characteristics has yet to be elucidated. Therefore, in this work the tree branch wood properties of three feedstocks (Acacia gerrardii Benth., Tamarix aphylla (L.) H. Karst., and Eucalyptus camaldulensis Dehn.) were investigated and compared with the characteristics of biochar produced by pyrolysis at 300 °C, 400 °C, and 500 °C. It was found that a higher lumen fraction resulted in a more porous structure, thus increasing the ability of biochar to absorb and retain water. Acacia gerrardii absorbed 403% and retained 73.6% water, whereas T. aphylla and E. camaldulensis held 396% and 342%, and then retained 71.5% and 68.1% water, respectively. The water holding capacity and water retention ability were lower in biochars pyrolyzed at 300 °C than 500 °C. The present findings demonstrate that fiber lumen diameter and parenchyma properties provide indicators of biochar hydrological characteristics generated from tree branch wood.

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Section: Water Holding Capacitysupporting

confidence: 58%

Section: Produced Biochar Characteristicsmentioning

confidence: 99%

Biochar hydrological characteristics in related to branch wood properties

Suansa

Al-Mefarrej

Alshahrani

2021

BioRes

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“…The spectra of Molinia cerulea and Elaeis guineensis show peaks at 2000 and 2100 cm −1 , corresponding to triple bond of alkynes that are part of the lignocellulose [77][78][79]. Finally, only the biochar of Elaeis guineensis show the presence of asymmetric (2910 cm −1 ) and symmetric (2850 cm −1 ) C-H stretching bands associated with aliphatic functional groups, which decrease in intensity due to structural changes occurred during pyrolysis that produce a decrease in aliphatic compounds [80,81].…”

Section: Biochar Characterizationmentioning

confidence: 99%

Synthesis, Characterization and Ecotoxicity Evaluation of Biochar-Derived Carbon Dots from Spruce Tree, Purple Moor-Grass and African Oil Palm

et al. 2021

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Biochar-derived C-Dots from Picea, Molinia caerulea and Elaeis guineensis were synthesized through a hydrothermal process, and their physicochemical and optical characteristics and environmental effects were compared. These C-Dots were characterized by techniques such as Attenuated Total Reflection–Fourier Transform Infrared (ATR-FTIR), UV-Vis spectrophotometry, fluorescence spectroscopy, dynamic light scattering (DLS), Z potential, and High-Resolution Transmission Electronical Microscopy (HR-TEM). The ecotoxicity tests were performed using the Microtox™ test, making this study one of the few that use this method. The C-Dots from Molinia caerulea showed the best quantum yield (QY) of 8.39% and moderate ecotoxicity, while Elaeis guineensis has the lowest QY (2.31%) but with zero toxicity. Furthermore, the C-Dots from Picea presents good optical properties but showed high toxicity and limits its use. Finally, all C-Dots showed functional groups that could be biofunctionalized with biomolecules, especially C-Dots from Molinia caerulea and Elaeis guineensis show potential for use in the development of optical biosensors.

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“…With respect to specific biochar properties, the effects of feedstock on pH [24][25][26][27][28], surface functional groups [26,27,[29][30][31][32], cation exchange capacity [23,[33][34][35], elemental analysis [29,30,36,37], ash content [26,34,36,38], and ecotoxicity [39] have been investigated. In these studies, some correlations between biomass and biochar properties were established and this enabled researchers to make progress and extend these correlations to specific biochar applications.…”

Section: The Role Of Feedstock In Biochar Productionmentioning

confidence: 99%

“…Therefore, they may be favorable materials for sorption of metals from soils, however, they may negatively affect nutrient availability and crop production [ 42 , 49 ]. Due to the higher lignin content and higher overall stability, wood feedstock biomass can be considered a better material after pyrolysis for potential carbon sequestration in soil [ 34 , 37 , 38 , 40 , 52 , 62 , 63 ]. Herbaceous biomass often leads to biochar with an increased presence of functional groups, which could serve for higher metal sorption in soil [ 36 ].…”

Section: Biochar Characteristicsmentioning

confidence: 99%

Towards a Soil Remediation Strategy Using Biochar: Effects on Soil Chemical Properties and Bioavailability of Potentially Toxic Elements

Bilias

Nikoli

Kalderis

et al. 2021

Toxics

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Soil contamination with potentially toxic elements (PTEs) is considered one of the most severe environmental threats, while among remediation strategies, research on the application of soil amendments has received important consideration. This review highlights the effects of biochar application on soil properties and the bioavailability of potentially toxic elements describing research areas of intense current and emerging activity. Using a visual scientometric analysis, our study shows that between 2019 and 2020, research sub-fields like earthworm activities and responses, greenhouse gass emissions, and low molecular weight organic acids have gained most of the attention when biochar was investigated for soil remediation purposes. Moreover, biomasses like rice straw, sewage sludge, and sawdust were found to be the most commonly used feedstocks for biochar production. The effect of biochar on soil chemistry and different mechanisms responsible for PTEs’ immobilization with biochar, are also briefly reported. Special attention is also given to specific PTEs most commonly found at contaminated soils, including Cu, Zn, Ni, Cr, Pb, Cd, and As, and therefore are more extensively revised in this paper. This review also addresses some of the issues in developing innovative methodologies for engineered biochars, introduced alongside some suggestions which intend to form a more focused soil remediation strategy.

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Influence of Intrinsic Properties of Lignocellulosic Feedstock on Adsorptive Properties of Biochar

Cited by 8 publications

References 33 publications

Biochar hydrological characteristics in related to branch wood properties

Biochar hydrological characteristics in related to branch wood properties

Synthesis, Characterization and Ecotoxicity Evaluation of Biochar-Derived Carbon Dots from Spruce Tree, Purple Moor-Grass and African Oil Palm

Towards a Soil Remediation Strategy Using Biochar: Effects on Soil Chemical Properties and Bioavailability of Potentially Toxic Elements

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