Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles

Dunnigan, Lewis; Ashman, Peter J.; Zhang, Xiangping; Kwong, Chi Wai

doi:10.1016/j.jclepro.2016.11.107

Cited by 82 publications

(35 citation statements)

References 33 publications

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“…In comparison to C content of BTs, the reduced C content in BFs (32.35%) is related to the added mineral salt embedded in the tablet with fertilizer. This agrees with Dunnigan et al (2018), who also observed that high mineral salt content reduced the C content in rice husk-derived biochar. Total N content (0.75%) in BTs was comparable to the reported N content of rice husk biochar produced at low temperature (Yi et al, 2015;O'Connor et al, 2018).…”

Section: Total Content Of Carbon and Nitrogensupporting

confidence: 92%

Characterization of Tablets Made from Mixture of Charred Agricultural Residues with and Without Embedded Fertilizer

Lee

Ahmed

Samsuri

et al. 2019

Acta Technologica Agriculturae

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Densification of biochar can reduce transportation and handling costs, as well as significantly decrease loss of biochar during soil application. Although the nutrient-rich biochar tablets may be a potential cost-effective slow-release fertilizer in soil, there is a lack of information on characterization of mixtures of rubber tree twigs and rice residues tablets with embedded NPK fertilizer. Objective of this work was to determine the physical and chemical properties of biochar tablets with and without embedded fertilizer. Biochar tablets were produced by blending of charred rice husk, rice straw, rubber tree twigs, and starch and followed by tableting. Their production with embedded fertilizer was similar to production process of tablets without it, except adding the NPK fertilizer to blending phase prior to tableting. Fourier-transform infrared spectra analysis indicates was utilized for determination of presence of ammonium and phosphorus substances in the biochar tablets with embedded fertilizer (BFs). The NPK fertilizer significantly increased tablet density and total contents of nitrogen, phosphorus, potassium, calcium and magnesium. The presence of higher amount of nutrients in BFs suggests that it could release nutrients for plant use.

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Section: Total Content Of Carbon and Nitrogensupporting

confidence: 92%

Characterization of Tablets Made from Mixture of Charred Agricultural Residues with and Without Embedded Fertilizer

Lee

Ahmed

Samsuri

et al. 2019

Acta Technologica Agriculturae

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“…The remnant ash content is left deposited on the internal heating surfaces, which forms slags and causes fouling to the process, affecting the heating rate negatively and decreasing process efficiency [9]. The inorganic compounds in the biomass feedstock may lead to an increase in particulate matter (PM) concentrations, such as crystalline silica, which has detrimental health effects in the air [9,42]. With consideration to the detrimental impacts of ash on combustion processes, the ash content of the CS is relatively high with 5.5 wt% db.…”

Section: Combustionmentioning

confidence: 99%

“…With consideration to the detrimental impacts of ash on combustion processes, the ash content of the CS is relatively high with 5.5 wt% db. Although straw and stalks are, therefore, not suitable for conventional combustion plants, the ash problem can be avoided by separating it into biochar through pyrolysis at low temperatures prior to combustion [9]. This can be also done by air staging in the boiler to separate the oxidation of the gases from contact to the ash.…”

Section: Combustionmentioning

confidence: 99%

“…Agricultural wastes pose expensive and challenging issues for crop producers. With exception to the fraction of residues tilled back into the soil to increase soil organic carbon (SOC) content and enhance other soil physical characteristics, many of these wastes have little to negative value, and knowledge of revenue streams are sparse [9,10]. For example, cotton biomass waste is an abundant and available waste from agricultural production at a high estimate of roughly 50 million tons annually [11].…”

Section: Introductionmentioning

confidence: 99%

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Bioenergy Recovery from Cotton Stalk

Afif¹,

Pfeifer²,

Pröll³

2020

Advances in Cotton Research

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Cotton stalk (CS) plant residue left in the field following harvest must be buried or burned to prevent it from serving as an overwintering site for insects such as the pink bollworm (PBW). This pest incurs economic costs and detrimental environmental effects. However, CS contains lignin and carbohydrates, like cellulose and hemicelluloses, which can be converted into a variety of usable forms of energy. Thermochemical or biochemical processes are considered technologically advantageous solutions. This chapter reviews potential energy generation from cotton stalks through combustion, hydrothermal carbonization, pyrolysis, fermentation, and anaerobic digestion technologies, focusing on the most relevant technologies and on the properties of the different products. The chapter is concluded with some comments on the future potential of these processes.

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“…In the slow pyrolysis process, biochar is the dominant product fraction, however, a significant fraction of bio-oil and a lower fraction of pyrolytic gas are also produced. Diverse studies have shown that the bio-oil and pyrolytic gas fractions produced by the pyrolysis process can be used as a source of heat in the process, reducing the cost of processing (Park et al, 2014;Dunningan et al, 2016). Depending on the type of biomass and operating conditions, the bio-oil produced presents a considerable content of oxygenated components, therefore receives less attention (due to the low HHV) being discarded as waste (Kabir and Hameed 2017).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Bio-Oil Derived From Catalytic Slow Pyrolysis of Sugarcane Bagasse

Machado¹,

Rodrigues²,

Luna³

et al. 2019

Proceedings of the 25th International Congress of Mechanical Engineering

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Emissions of greenhouse gases (GHGs) and other pollutants have increased considerably over the past decades due to the continued use of energy derived from fossil fuels. This has led to problems and environmental impacts that motivate the use of clean and renewable energy sources and unconventional combustion processes. Biomass is a renewable source and has great potential for CO2 neutral energy generation. Among all the alternatives for the use of biomass, thermochemical conversion processes are the most efficient, and pyrolysis is the process capable of producing biofuels, minimizing dependence on fossil fuels. The most studied types of pyrolysis are: rapid pyrolysis and slow pyrolysis. The slow pyrolysis of biomass is mainly intended to produce biochar; however, a fraction of bio-oil is obtained, which presents a high content of oxygenated components, receiving less attention being discarded as residue. Several studies have highlighted the use of catalysts to improve biochar and bio-oil quality. However, it is noteworthy that the literature presents few studies regarding the effect of the use of catalysts in the slow pyrolysis of biomass. In Brazil, sugarcane is an important energy crop used for ethanol production, thereby, large quantities of sugarcane bagasse are generated. Nowadays there are many alternatives for use this resource, one of them is pyrolysis. In literature, several works have studied the fast pyrolysis of sugarcane bagasse for biofuel production, however, the possibility of obtaining bio-oil through slow pyrolysis has not yet been studied. Thus, the objective of this work is to study the catalytic slow pyrolysis of sugarcane bagasse for bio-oil production.

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Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles

Cited by 82 publications

References 33 publications

Characterization of Tablets Made from Mixture of Charred Agricultural Residues with and Without Embedded Fertilizer

Characterization of Tablets Made from Mixture of Charred Agricultural Residues with and Without Embedded Fertilizer

Bioenergy Recovery from Cotton Stalk

Characterization of Bio-Oil Derived From Catalytic Slow Pyrolysis of Sugarcane Bagasse

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