Valorisation of restaurant food waste under the concept of a biorefinery

Salimi, Erfaneh; Taheri, Mir Edris; Passadis, Konstantinos; Novacovic, Jelica; Barampouti, Elli Maria; Mai, Sofia; Μουστάκας, Κωνσταντίνος; Malamis, Dimitris; Loizidou, Maria

doi:10.1007/s13399-020-00613-4

Cited by 28 publications

(9 citation statements)

References 24 publications

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“…Except for the protein and fat content (5-10% and 10-40%, respectively), these values are comparable with the published values for previously reported FW. [56][57][58] The results of this study indicate that FW was enriched in total carbohydrates and proteins, and the low composition of fat and fiber indicated that the sample could be used as a highly desirable substrate for soluble sugar obtained to produce value-added products as DLA. 59 Optimization of RRS from FW by CCD As shown in Table 4, the influence of time (X 1 ) and concentration of acid (X 2 ) on the release of reducing sugars was determined by CCD results.…”

Section: Resultsmentioning

confidence: 82%

Lactic acid production from food waste using the lactogenic Escherichia coli strain JU15: optimization of reducing sugar recovery

Santos‐Corona

Lázaro-Mixteco

Vargas‐Tah

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: D-Lactic acid (DLA) has numerous industrial applications, including production of biodegradable polylactic acid, which is one of the most promising biodegradable polymers. Looking for alternative feedstocks is a high priority and recent focus has been on its biological synthesis and biotechnological valorization from food waste (FW) materials. In this study, a response surface methodology (RSM) approach and central composite design (CCD) were performed to hydrolyze FW, obtaining released reducing sugars (RRS) for DLA production using the lactogenic Escherichia coli strain JU15. RESULTS: After an optimized sulfuric acid-based pretreatment methodology using RSM and CCD, FW was utilized to obtain the maximum concentration of RRS, obtaining liquors containing glucose (85.59%), fructose (5.48%) and arabinose (8.92%) with an efficiency of ∼98% total sugar conversion from hydrolysis of FW. As the total sugar sources obtained titers of 26.85 ± 1.28 g L −1 (DNS) and DLA production was 22.66 ± 1.01g L −1 , the DLA yield was 0.99 g g −1 total sugar. While arabinose was discretely consumed, with a remaining concentration of 0.36 ± 0.02 g L −1 after culture, the production of DLA through bacterial fermentation of the FW hydrolysates by the JU15 strain showed total depletion of glucose and fructose, achieving a maximum DLA production of 22.66 g L −1 , with a maximum volumetric productivity of 0.73 g L −1 h −1 at 36 h. CONCLUSION: This study provides an experimental optimization of a pretreatment to obtain released reducing sugars to lactic acid production from food waste as feedstock using the lactogenic E. coli strain JU15.

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Section: Resultsmentioning

confidence: 82%

Lactic acid production from food waste using the lactogenic Escherichia coli strain JU15: optimization of reducing sugar recovery

Santos‐Corona

Lázaro-Mixteco

Vargas‐Tah

et al. 2021

J of Chemical Tech & Biotech

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“…Based on the results of extensive experimental work on biowaste [9][10][11], on the bioethanol production trials with dried feedstock [12], and on preliminary lab scale experiments, the enzyme and yeast dosages that were adopted were: 175 µL/g cellulose NS87014 (333 FPU/mL), 40 µL/g starch SpirizymeXL (2337 U/mL), and 2% Saccharomyces cerevisiae (d.b.) (dry baker's yeast).…”

Section: Methodsmentioning

confidence: 99%

Piloting Bioethanol Production from Source-Separated Food Waste Boosts Technology Readiness

Chatzimaliakas,

Christianides,

Malamis

et al. 2023

Sustainability

Self Cite

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By the end of 2023, biowaste must be completely separated or recycled at source, based on EU legislation. Separate biowaste collection and valorisation for biofuels could play an essential role in the biobased circular economy. In this context, the principal goal of this paper was to demonstrate on a pilot scale the technological solution of bioethanol production via the utilisation of urban source-separated biowaste within the city context of Athens, Greece. More specifically, the main aim was the demonstration of a pilot system for more than 10 consecutive operating cycles with real feedstock—wet; separately collected biowaste. From the 11 pilot trials performed with wet feedstock, the mean starch and cellulose degradation of the pilot trials amounted to 80.69 ± 16.27% and 79.41 ± 10.37%, respectively, while the bioethanol yield was 74.05 ± 6.82%. The latter was comparable to that of more intensive pretreatment methods. Homogenization and shredding, which were applied in this study, stand as promising pretreatment methods for bioethanol production from wet feedstock. Further research is needed to optimize conditions and evaluate scalability. Nevertheless, pilot-scale testing is a crucial step in the deployment of this technology since it serves as a bridge between laboratory research and full-scale implementation, offering a practical and controlled environment to validate and optimize the technology while minimizing risks and uncertainties. Conclusively, this study could stand as a flagship case study for the implementation of circular and sustainable approaches in the management of organic fractions of source-separated municipal waste, showcasing the technical feasibility of the whole value chain from waste collection to final bioethanol product recovery.

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“…The recycling and reusing approach of circular economy and circular product development process of valorization of the WCO will play a leading role to mitigate their negative societal and environmental impacts. Recent publications highlighted the applications of various circular economy approaches for valorization of food wastes for different industrial applications [9][10][11]. This paper highlights the recycling and reusing aspect of circular economy of WCOs to develop several value-added green additives for oil and gas field applications.…”

Section: Introductionmentioning

confidence: 99%

“…However, the culture is changing due to the enactment of increasingly strict environmental laws and regulations by the EPAs, local, state and federal governments of various countries and also due to the increasing awareness of the public and the global communities. This is reflected by the promotion and adoption of different circular economy and circular development approaches such as recycling, reusing, repairing, modification, refabrication, etc for valorization of food wastes and other waste products by developing a variety of new and upgraded products along with chemicals, materials, biofuels, green additives, etc for various industrial applications [8][9][10][11]. The selection of circular economy approaches and the valorization processes depend on the nature and the composition of the abiotic and the bio-based wastes.…”

Section: Introductionmentioning

confidence: 99%

Recycling and Reusing Aspect of Green Circular Economy to Overcome Engineering and Environmental Challenges

Amanullah¹

2022

J Eng App Sci Technol

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The environmental issues of mineral oil-based drilling muds and additives in spite of their excellent technical performance such as good lubricity and high wear protection characteristics and the technical issues of water-based drilling muds such as the poor lubricity and wear resistance characteristics in spite of their excellent environmental traits require the development of high performance water-based drilling muds to overcome the current as well as the future drilling engineering and other oil and gas field challenges. Hence, several value-added green products have been developed adopting the recycling and reusing aspect of green circular economy of waste cook oil (WCO) to develop eco-friendly fluid additives and demonstrate their applications to explore and exploit oil and gas resources without any damage to the terrestrial, coastal and the marine environments and the ecosystems. Analyses of technical performance of the WCO derived green products with respect to the equivalent commercial products indicate similar or superior technical performance with the added benefit of no environmental impact. Hence, the recycling and reusing of the WCO provide a sustainable circular economical route for ecofriendly product development to overcome the technical and the environmental challenges simultaneously. It also provides a potential avenue for the growth and development of local, regional, national and global industries and infrastructures, development and creation of new job opportunities for the local, regional and the global communities, especially in developing and under-developed countries to create a positive societal and economic impact. Although this paper highlights mainly the oil and gas industry applications, WCO has huge potential for other industrial applications to overcome the technical problems without any negative environmental consequences. It can be used as a sustainable raw material for the development of a large variety of value-added green chemicals and polymers such as plasticizers, binders, surfactants, eco-greases, biopolymers, etc for other industrial applications. The renewable, sustainable and locally available source of the raw material have high potential to bring long-term stability to the oil and gas field additive supply chain for continuous and uninterrupted drilling and production operation. The paper highlights the applications of several WCO-based value-added products to overcome the technical and environmental challenges faced by the oil and gas industry.

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Valorisation of restaurant food waste under the concept of a biorefinery

Cited by 28 publications

References 24 publications

Lactic acid production from food waste using the lactogenic Escherichia coli strain JU15: optimization of reducing sugar recovery

Lactic acid production from food waste using the lactogenic Escherichia coli strain JU15: optimization of reducing sugar recovery

Piloting Bioethanol Production from Source-Separated Food Waste Boosts Technology Readiness

Recycling and Reusing Aspect of Green Circular Economy to Overcome Engineering and Environmental Challenges

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