Utilization of brewery residues to produces granular activated carbon and bio-oil

Gonçalves, Gilberto da Cunha; Nakamura, Patrick K.; Furtado, Damaris F.; Veit, Márcia Teresinha

doi:10.1016/j.jclepro.2017.09.089

Cited by 45 publications

(12 citation statements)

References 26 publications

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“…The value of the specific surface area of MWEPN calculated using BET method was 1251 m 2 g −1 . Compared to the others activated carbons previously reported (Gonçalves et al, 2017;Kang et al, 2017;Njoku et al, 2014;Rahman et al, 2017), the surface area of the material prepared in this study appears very competitive. Also, external surface area and the micropore surface area of MWEPN were respectively 927.2 and 323.8 m 2 g −1 , which corresponds to 74.12% (external surface area) and 25.88% (micropore area) of the total surface area.…”

Section: Characterisation Of the Activated Carboncontrasting

confidence: 61%

Conversion of Eragrostis plana Nees leaves to activated carbon by microwave-assisted pyrolysis for the removal of organic emerging contaminants from aqueous solutions

Cunha

Lima

Cimirro

et al. 2018

Environ Sci Pollut Res

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Eragrostis plana Nees leaves, abundant lignocellulosic biomass, was used as carbon source for preparation of activated carbon, by using microwave-assisted pyrolysis and chemical activation. The novel activated carbon (MWEPN) was characterised by FTIR, CHN elemental analysis, Boehm's titration method, TGA, SEM, N adsorption/desorption curves and pH of the point of zero charge (pH). Afterwards, the adsorbent was successfully employed for adsorption of the two emerging contaminants (caffeine and 2-nitrophenol). The results indicated that MWEPN had a predominantly mesoporous structure with a high surface area of 1250 m g. FTIR analysis indicated the presence of carbonyl, hydroxyl and carboxylic groups on the surface of MWEPN. The Boehm analysis showed the existence of the high amount of acid moieties on the surface of activated carbon. Adsorption kinetic indicated that the system followed the Avrami fractional order at the optimal pH of 7. The equilibrium time was attained at 30 min. The Liu isotherm model better described the isothermal data. Based on the Liu isotherm, the maximum sorption capacities (Q) of caffeine and 2-nitrophenol adsorbed onto activated carbon at 25 °C were 235.5 and 255.8 mg g, respectively.

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Section: Characterisation Of the Activated Carboncontrasting

confidence: 61%

Conversion of Eragrostis plana Nees leaves to activated carbon by microwave-assisted pyrolysis for the removal of organic emerging contaminants from aqueous solutions

Cunha

Lima

Cimirro

et al. 2018

Environ Sci Pollut Res

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“…Other, less popular uses of spent yeast from beer production include methane production or application as biosorbent. Considering the energy production, spent yeast can be considered an excellent substrate for co-digestion purposes with other materials, including swine manure [241], spent grains [242], or crude glycerol [243].…”

Section: Current Applications and Potential In Polymer Technologymentioning

confidence: 99%

More than just a beer—the potential applications of by-products from beer manufacturing in polymer technology

Hejna

2021

emergent mater.

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Beer is the most popular alcoholic beverage in the world, and its popularity is continuously growing. Currently, global beer production is estimated at around 2 billion hectoliters. Nevertheless, the increasing production capacity implicates the rising issue of generated by-products—brewers’ spent grain, spent hops, spent yeast, and wastewater. They are generated in massive amounts, so having in mind the current pro-ecological trends, it is crucial to look for their utilization methods. Among the possibilities, particular attention should be drawn to polymer technology. This sector can efficiently use different lignocellulosic materials, which could be applied as fillers for polymer composites or sources of particular chemical compounds. Moreover, due to their chemical composition, brewing industry by-products may be used as functional fillers and additives. They could be introduced to enhance the materials’ resistance to oxidation, microbes, or fungi. These issues should be considered especially important in the case of biodegradable polymers, whose popularity is growing over the last years. This paper summarizes the literature reports related to the composition and potential applications of the brewing industry by-products in polymer technology. Moreover, potential directions of research based on the possibilities offered by the brewing industry by-products are presented.

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“…Pyrolysis of BSG results in the formation of char, bio-oil and permanent gases, being bio-oil the most abundant fraction and contains a complex mixture of hydrocarbons (Mussatto 2014). Gonçalves et al (2017) studied the conversion of BSG to bio-oil and activated carbon, producing yields of 19%, 56% and 25% of charcoal, liquid (two phasesaqueous and organic (bio-oil)) and gases, respectively. Due to its high content of hemicellulose and cellulose, BSG can also be an interesting source of ethanol production (with a 86.3% conversion efficiency using dilute acid hydrolysis) (Mussatto 2014).…”

Section: Bsg Applicationsmentioning

confidence: 99%

Current extraction techniques towards bioactive compounds from brewer’s spent grain – A review

Bonifácio-Lopes

Teixeira

Pintado

2019

Critical Reviews in Food Science and Nutrition

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Background: Brewer's spent grain is one of the most abundant by-products of the brewing industry and is rich in various bioactive compounds (phenolic acids, insoluble dietary fiber and proteins). While at the present brewer's spent grain is mainly used as animal feed its rich nutritional content makes it an interesting alternative for food applications. Scope and approach: As the range of applications of the bioactive compounds extracted from by-products has been growing in recent years, there is the need to obtain and characterize these bioactive compounds. Extraction methods (supercritical carbon dioxide, autohydrolysis, alkaline hydrolysis, solvent extraction, ultrasound assisted extraction, dilute acid hydrolysis, enzymatic hydrolysis, microwave assisted extraction) have been developed and are always being subjected to new approaches to allow better extraction yields of the bioactive compounds. Key findings and conclusions: This review aims to provide a better understanding of the current advantages and limitations of brewer's spent grain extraction processes and to provide a background of brewer's spent grain composition and applications. HIGHLIGHTS The re-use of agro-industrial by-products can origin new added-value products BSG is an agro-industrial by-product and is a source of various bioactive compounds Extraction methods have been applied to extract these compounds from BSG It is needed to find new techniques and new possible applications to the BSG

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Utilization of brewery residues to produces granular activated carbon and bio-oil

Cited by 45 publications

References 26 publications

Conversion of Eragrostis plana Nees leaves to activated carbon by microwave-assisted pyrolysis for the removal of organic emerging contaminants from aqueous solutions

Conversion of Eragrostis plana Nees leaves to activated carbon by microwave-assisted pyrolysis for the removal of organic emerging contaminants from aqueous solutions

More than just a beer—the potential applications of by-products from beer manufacturing in polymer technology

Current extraction techniques towards bioactive compounds from brewer’s spent grain – A review

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