Value added liquid products from waste biomass pyrolysis using pretreatments

During the past two decades academia, industry and government have aimed more and more their attention to the phenomenon of a biobased economy providing society with non‐food biobased products. Now developing are biomass industries that make an array of commercial products, including fuels, electricity, chemicals, adhesives, lubricants and building materials, as well as new clothing fibers and plastics. Instead of fossil resources “green” biobased economy uses renewable grown or waste biomass. The lead supplying role to the biobased economy is held by a sector of agriculture, above all the crop production. In this manner an effective limitation of food surplus may occur in the EU market and enhance a value added to all vertical industry. Industrial‐scale production of biobased materials in time with consumers’ changing attitudes towards sustainable economic and social development may affect a wide array of consequences which nowadays can be tediously estimated. Food safety along with food security is one of the hottest issues especially in the United States, knowing that human population and biobased economy compete in using and processing a broad range of agricultural crops. An energy analysis aspect of this caloric relationship among agricultural sector on the supply side and human population and biobased economy on the other – demand side is assumed to represent the principal aim of this study. Consequently, there is the need to evaluate whether a quantity of Czech Crop Output Total is possible to nourish the Czech population and whether there is an available caloric surplus suitable as a biomass resource for biobased economy which is actually taking root.

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Agroindustry Residues as a Source for Cellulose Nanofibers Production

Journal of the Brazilian Chemical Society ◽

10.21577/0103-5053.20200239 ◽

2021 ◽

Author(s):

Mayra Mariño ◽

Daniela Cypriano ◽

Ljubica Tasic

Keyword(s):

Crop Residues ◽

Alkali Treatment ◽

Cellulose Nanofibers ◽

Value Added ◽

Raw Material ◽

Sodium Chlorite ◽

Waste Biomass ◽

Sugarcane Straw ◽

Coffee Residues ◽

Crop Waste

Our study was motivated by the large amount of crop residues produced in Brazil, which represent underutilized waste biomass and a serious threat to the environment because of the landfilling. For example, even though the corn crop is not popular in Brazil, it is produced in the area of around 18-20 million hectares with an average production of 5-6 t ha-1. That is the reason to seek for the crop residues value-added applications as proposed in the present study. Four Brazilian crop waste biomass: orange bagasse, corn husks, sugarcane straw and coffee residues were used for cellulose nanofibers (CNF) production. CNFs were prepared using alkali treatment, followed by bleaching with sodium chlorite and extraction with oxalic acid. All steps were applied under moderate conditions of temperature and pressure, such as temperature of 120 °C and below, water solutions with chemicals’ concentrations lower that 10% and short sonication pulses. CNFs with diameters in the range 50-70 nm were obtained and products from orange bagasse and corn husks presented high crystallinity indexes (CI), 0.72 and 0.75, respectively. The highest CNF yield was obtained from corn husks (38.5%) followed by sugarcane straw (24.0% with CI of 0.69). CNFs obtained from coffee residues showed a CI value of 0.65 after two bleaching steps. Different CNF morphologies were obtained according to the raw material. The four-crop waste biomass can be considered as excellent starting materials for CNF production in the four-steps process that adds new value to agro-industrial waste and might bring great economical valorization to Brazilian crops production.

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Report on the Characterization of Biomass Pyrolysis Liquid Products Workshop

Research in Thermochemical Biomass Conversion ◽

10.1007/978-94-009-2737-7_90 ◽

1988 ◽

pp. 1177-1180 ◽

Cited By ~ 3

Author(s):

Helena L. Chum ◽

James McKinley

Keyword(s):

Biomass Pyrolysis ◽

Liquid Products ◽

Pyrolysis Liquid

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Synthesis and characterization of rice husk biochar via hydrothermal carbonization for wastewater treatment and biofuel production

Scientific Reports ◽

10.1038/s41598-020-75936-3 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Nazia Hossain ◽

Sabzoi Nizamuddin ◽

Gregory Griffin ◽

Periasamy Selvakannan ◽

Nabisab Mujawar Mubarak ◽

...

Keyword(s):

Rice Husk ◽

Agricultural Waste ◽

Value Added ◽

Hydrothermal Carbonization ◽

Catalytic Performance ◽

Biofuel Production ◽

Suspension Stability ◽

Waste Biomass ◽

Suitable Material ◽

Rice Husk Biochar

Abstract The recent implication of circular economy in Australia spurred the demand for waste material utilization for value-added product generations on a commercial scale. Therefore, this experimental study emphasized on agricultural waste biomass, rice husk (RH) as potential feedstock to produce valuable products. Rice husk biochar (RB) was obtained at temperature: 180 °C, pressure: 70 bar, reaction time: 20 min with water via hydrothermal carbonization (HTC), and the obtained biochar yield was 57.9%. Enhancement of zeta potential value from − 30.1 to − 10.6 mV in RB presented the higher suspension stability, and improvement of surface area and porosity in RB demonstrated the wastewater adsorption capacity. Along with that, an increase of crystallinity in RB, 60.5%, also indicates the enhancement of the catalytic performance of the material significantly more favorable to improve the adsorption efficiency of transitional compounds. In contrast, an increase of the atomic O/C ratio in RB, 0.51 delineated high breakdown of the cellulosic component, which is favorable for biofuel purpose. 13.98% SiO2 reduction in RB confirmed ash content minimization and better quality of fuel properties. Therefore, the rice husk biochar through HTC can be considered a suitable material for further application to treat wastewater and generate bioenergy.

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