Surface morphology properties of biochars produced from different feedstocks

Liang, Hao; Chen, Lei; Liu, Guocheng

doi:10.2991/iccte-16.2016.210

Cited by 19 publications

(5 citation statements)

References 12 publications

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“…Thus this biochar can be used in soil amendment in agriculture as these nutrients play important role in growth of plant or can be used as ameliorants for improving of degraded soils. Similar founding is also reported by Sahoo et al (2013) for bamboo and pigeon pea stalk biochars at pyrolysis temperature 400°C -600°C and Liang et al (2016) for saw dust and furfural residue biochar obtained at 300°C -700°C.…”

Section: Bet and Sem/edx Of Biocharsupporting

confidence: 89%

“…Scanning electron microscopy (SEM) and electron dispersive X-ray analysis (EDX) techniques are used to examine the structure of pores on surface and distribution of minerals in the biochar, respectively. The ligno-cellulosic raw material have brous and cellular structures, such as trachieds, which form the carbon matter after thermal degradation and with increase in temperature the surface morphology of the biochars sophistically changes with the gradual opening of pores on the surface (Liang et al 2016, Santos et al 2022. Further mores pores are also generated due to the decomposing and melting of chemical bonds and structure of raw biomass (Fu et al 2009, Sheau et al, 2014).…”

Section: Bet and Sem/edx Of Biocharmentioning

confidence: 99%

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WITHDRAWN: Optimization and characterization of biochar obtained from weedy biomass of Calotropis gigantea by vacuum pyrolysis

Poonia,

Gaur,

Panwar

2023

Preprint

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In the present study, response surface methodology (RSM) was employed to optimize the preparation conditions of biochar to obtain better quality biochar. The maximum fixed carbon, carbon, surface area, pore volume and pore size were predicted at the optimised preparation parameters of 450°C temperature and 50-100mm particle size. The objective of the present study is to evaluate and characterized the application of biochar of invasive weed Calotropis gigantea obtained under optimized parameters by vacuum and slow pyrolysis for one hour of reaction time. The biochar was characterized with the presence of high carbon content of 64.65%, and; low H/C and O/C molar ratio of 0.08 and 0.15 respectively. The surface of biochar was observed porous constituting mesoporous pore structure with remarkable high surface area of 99.91m2/g and pore volume of 0.0398cm3/g along with traces of minerals fractions such as K- 1.33%, Na- 1.17%, Mg- 1.05%. Strong FTIR bands observed at 1994.1 cm-1, 1110 cm-1, and 745 cm-1, representing allenes (R 2C=C=CR 2) , aryl alkyl ethers (R − O – R) and aromatic (C–H) bending. All these parameters indicate its potential in the application for carbon sequestration, climate change mitigation, environment pollutants adsorption (both organic and inorganic) and soil improvement.

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Section: Bet and Sem/edx Of Biocharsupporting

confidence: 89%

Section: Bet and Sem/edx Of Biocharmentioning

confidence: 99%

WITHDRAWN: Optimization and characterization of biochar obtained from weedy biomass of Calotropis gigantea by vacuum pyrolysis

Poonia,

Gaur,

Panwar

2023

Preprint

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“…While X-ray microtomography has been used to image biochar derived from plant-based materials (Berhanu et al 2018;Bird et al 2008;Hyväluoma et al 2018b;Jeffery et al 2015;Jones et al 2015;Schnee et al 2016), to our knowledge this is the first study using X-ray microtomography to study the structure of broiler manure biochar. Previously, scanning electron microscopy (SEM) has been used to visually study the structure of broiler manure biochar (Glazunova et al 2018;Liang et al 2016;Lima et al 2015;Qiu and Guo 2010;Song and Guo 2012). For example, the porous structures in the SEM images presented by Lima et al (2015) originate from the cellular structure of wood.…”

Section: Physical Propertiesmentioning

confidence: 99%

Fertilizer and soil conditioner value of broiler manure biochars

Keskinen

Hyväluoma

Sohlo

et al. 2019

Biochar

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Pyrolysis is an option for enhancing the sustainable management of broiler manure surpluses by producing a concentrated, hygienic char product with a fertilizer and soil conditioner value. In this study, the impacts of pyrolysis conducted at 350, 400 and 450 °C on total nutrient and harmful element concentrations in biochars derived from peat-bedded broiler manure were examined. Emphasis was placed on the availability of phosphorus (P). In addition, the pore structures of these biochars were explored using X-ray microtomography and image analysis. During pyrolysis, 35-50%, 40-55% and 35-45% of the original carbon, nitrogen and sulfur contents, respectively, of the feedstock biomass were lost as volatiles. Mineral elements, including P, were concentrated in the biochar. Although water-extractable P was found to be converted to less labile forms due to charring, the concentration effect and notable increase in sodium bicarbonate-extractable P rendered broiler manure biochars richer in total labile P in comparison with feedstock manure (7.1, 10.0, 11.1 and 14.8 g labile P kg −1 in feedstock and biochars produced at 350, 400 and 450 °C, respectively). The pore volume of the micrometer-scale porosity of the broiler manure biochar was comparable to that found earlier in wood-based biochars. In comparison with wood-based biochars, the pore structure of broiler manure biochars was more versatile, and the pore size distribution was wider. Consequently, part of the porosity was too large to store plant-available water, which may reduce the potential of broiler manure biochars to improve soil water storage capacity.

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“…The filtered hardwood fed into the machine during startup was carbonized. We determined the size dimensions of the resulting carbon grains (Table 2 [19]. Smaller pore size biochar can only absorb f.e.…”

Section: Figure 11 Management Panel Of the Devicementioning

confidence: 99%

Production and Production-Increasing Factors of Biochar

Madár,

Betovics,

Tóth

2023

HAE

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In the article, we deal with biochar-related research and our own developments. Studies in the literature show that biochar can be used as a soil conditioner in agriculture and horticulture. It improves many physical, chemical, and biological properties of the soil and substrate. It increases the water retention capacity while reducing the leaching of nutrients. Through these, you can improve the profit of producers, the sustainability of production, and the efficiency of fertiliser use. By increasing water retention, biochar can reduce irrigation needs and enable production on limited water resources. The developed and presented equipment was called the resting bed (fixed bed) version. Drying and carbonization are also carried out by direct heat transfer. The material, with a temperature equalised by moving drying and a homogeneous composition, enters the reactor. The high-temperature gas and air mixture is introduced into the dryer by a gas jet pump. The energy obtained by burning the pyrolysis gases produced during carbonization ensures the heating of the system, so there is no need for significant external energy input. Due to the structure of the system, the PAH content of the final product is low.

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Surface morphology properties of biochars produced from different feedstocks

Cited by 19 publications

References 12 publications

WITHDRAWN: Optimization and characterization of biochar obtained from weedy biomass of Calotropis gigantea by vacuum pyrolysis

WITHDRAWN: Optimization and characterization of biochar obtained from weedy biomass of Calotropis gigantea by vacuum pyrolysis

Fertilizer and soil conditioner value of broiler manure biochars

Production and Production-Increasing Factors of Biochar

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