Prefeasibility analysis of small-scale biorefineries: the annatto and açai case to improve the incomes of rural communities

Poveda-Giraldo, Jhonny Alejandro; Piedrahita-Rodríguez, Sara; Aristizabal, Natalia Salgado; Salas-Moreno, Manuel; Álzate, Carlos Ariel Cardona

doi:10.1007/s13399-022-03479-w

Cited by 4 publications

(2 citation statements)

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“…Feedstock selection plays an important role in sustainability as the type or classification would affect biodiversity, environmental and social impacts, economic aspects, and processing scale, among others. 5 To improve all these aspects, biorefineries based on lignocellulosic residues could be a promising alternative due to their abundance and low cost. 6 Therefore, residues from rice milling can be potential in large-scale biorefineries since this agricultural product is the third most important and extensive crop, followed by corn and wheat.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sustainability assessment of lignocellulosic biorefineries based on sequential pretreatments

Poveda‐Giraldo,

Cardona Alzate

2023

J of Chemical Tech & Biotech

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BackgroundPretreatments are critical in biorefinery analysis, affecting further reactions and downstream processes. However, most pretreatments are studied and optimized as single‐step schemes, focusing on maximizing a sidestream. Sequential pretreatments have been shown to improve the selective isolation of platforms for further valorization. However, pretreatment performance can consider not only technical but also economic, environmental, and social concerns. This work assessed the sustainability of sequential pretreatments in rice husk‐based biorefineries.ResultsFour biorefinery scenarios were designed, simulated, and assessed considering dilute acid and wet air oxidation pretreatment technologies in sequential and single‐step schemes. Economic feasibility was demonstrated for sequential pretreatments when phenolic compounds are contemplated, generating gross incomes of 4.76 M‐USD year‐1. From an environmental perspective, the rice supply chain generated a carbon footprint of 2.17 kg CO2 eq kg‐1 of rice husks, where the producer link is the largest contributor due to fertilizer use. Likewise, it was shown that supplying energy demands using black liquor as fuel relieves operating costs and reduces the carbon footprint. The social dimension showed that between 69 and 77 jobs could be generated annually along the value chain and the biorefinery schemes. However, biorefineries have a high risk due to the high volume of cooling water.ConclusionsAll dimensions were weighted to calculate a sustainability index, where it was concluded that sequential pretreatment biorefineries improved sustainability against the single‐step schemes. However, the scenario of valorization of the three fractions (Sc1) is the best scheme to be implemented as it has always demonstrated economic feasibility.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sustainability assessment of lignocellulosic biorefineries based on sequential pretreatments

Poveda‐Giraldo,

Cardona Alzate

2023

J of Chemical Tech & Biotech

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Physicochemical characterization of açaí seeds (Euterpe oleracea) from Colombian pacific and their potential of mannan-oligosaccharides and sugar production via enzymatic hydrolysis

Murillo-Franco,

Galvis-Nieto,

Orrego

2023

Biomass Conv. Bioref.

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The study aimed to characterize açaí seeds and explore their potential for producing mannooligosaccharides (MOS) through enzymatic hydrolysis. According to characterization tests by XRD, FTIR, and chemical analysis, acai seeds, a waste material from acai fruit processing, contain significant hemicellulose content, with a main content based on mannan. The study utilized Rohalase®GMP enzyme for hydrolysis and monitored reducing sugars and MOS production (8–10 g MOS/L) hydrolysate with varying lengths, including di-, tri-, tetra-, and pentasaccharide over time. Results showed a concentration plateau of reducing sugars at 13 h and increased MOS until hour nineteen. Mannobiose (M2) was the predominant MOS produced. Comparative analysis with prior research indicated that the açaí seed hydrolysate’s MOS content aligns with that from other sources. Importantly, the study achieved % hydrolysis and MOS yield of 10.79 ± 0.05% and 51.39 ± 0.11 g M2-M5/g mannan, respectively. Açaí seed is a promising source to produce enzymes, biofuels, or thermal energy, as well as highly valued chemical compounds in the industry. This work additionally demonstrates its potential as a sustainable source of valuable MOS, suggesting applications as prebiotics and functional food additives, with implications for various industries seeking eco-friendly alternatives.

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Lignocellulosic biorefineries: A multiscale approach for resource exploitation

Martín

Taifouris

Galán

2023

Bioresource Technology

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Prefeasibility analysis of small-scale biorefineries: the annatto and açai case to improve the incomes of rural communities

Cited by 4 publications

References 84 publications

Sustainability assessment of lignocellulosic biorefineries based on sequential pretreatments

Sustainability assessment of lignocellulosic biorefineries based on sequential pretreatments

Physicochemical characterization of açaí seeds (Euterpe oleracea) from Colombian pacific and their potential of mannan-oligosaccharides and sugar production via enzymatic hydrolysis

Lignocellulosic biorefineries: A multiscale approach for resource exploitation

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