Implementing circular economy concept by converting cassava pulp and wastewater to biogas for sustainable production in starch industry

Lerdlattaporn, Ruenrom; Phalakornkule, Chantaraporn; Trakulvichean, Sivalee; Songkasiri, Warinthorn

doi:10.21203/rs.3.rs-103700/v2

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…For example, Lerdlattaporn et al (2021) shows how the starch industry can have sustainable production by converting cassava pulp and wastewater into biogas. Norouzi et al (2021) also shows how the construction sector has benefited from the development and use of alternative construction materials and the design of smart cities.…”

Section: Circular Economy (Ce)mentioning

confidence: 99%

Factors for the implementation of the circular economy in Big Data environments in service companies in post pandemic times of COVID-19: The case of Colombia

et al. 2023

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In emerging economies, Big Data (BD) analytics has become increasingly popular, particularly regarding the opportunities and expected benefits. Such analyzes have identified that the production and consumption of goods and services, while unavoidable, have proven to be unsustainable and inefficient. For this reason, the concept of the circular economy (CE) has emerged strongly as a sustainable approach that contributes to the eco-efficient use of resources. However, to develop a circular economy in DB environments, it is necessary to understand what factors influence the intention to accept its implementation. The main objective of this research was to assess the influence of attitudes, subjective norms, and perceived behavioral norms on the intention to adopt CE in BD-mediated environments. The methodology is quantitative, cross-sectional with a descriptive correlational approach, based on the theory of planned behavior and a Partial Least Squares Structural Equation Model (PLS-SEM). A total of 413 Colombian service SMEs participated in the study. The results show that managers' attitudes, subjective norms, and perceived norms of behavior positively influence the intentions of organizations to implement CB best practices. Furthermore, most organizations have positive intentions toward CE and that these intentions positively influence the adoption of DB; however, the lack of government support and cultural barriers are perceived as the main limitation for its adoption. The research leads to the conclusion that BD helps business and government develop strategies to move toward CE, and that there is a clear positive will and intent toward a more restorative and sustainable corporate strategy.

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Section: Circular Economy (Ce)mentioning

confidence: 99%

Factors for the implementation of the circular economy in Big Data environments in service companies in post pandemic times of COVID-19: The case of Colombia

et al. 2023

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“…Accordingly, it immediately spoils and emits an unpleasant and strong scent. Moreover, the use of cassava pulp has been proposed in various applications, such as animal feeds (Diarra and Devi, 2015;Dagaew et al, 2022;Pongsub et al, 2022), bioethanol (Rattanachomsri et al, 2009;Siriwong et al, 2019), succinic acid (Sawisit et al, 2015), lactic acid (Thongchul et al, 2010;Gali et al, 2021), fertilizer (Phuniam et al, 2018;Hasanudin et al, 2019), biogas (Lerdlattaporn et al, 2021), biodegradable polymer (Hierro-Iglesias et al, 2022) and biocomposites (Nguyen et al, 2020;Nithikarnjanatharn and Samsalee, 2022). Clearly, high value-added products can be created from leftover cassava wastes generated by the cassava industry.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted cassava pulp hydrolysis as food waste biorefinery for biodegradable polyhydroxybutyrate production

Prasertsilp

Pattaragulwanit

Kim

et al. 2023

Front. Bioeng. Biotechnol.

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Cassava pulp is one of the most abundant agricultural residues that can cause serious disposal problems. This study aimed to apply a biorefinery approach by examining the feasibility of microwave-assisted cassava pulp hydrolysis to attain sustainable management and efficient use of natural resources. Four factors, namely, the liquid-to-solid ratio (20 mL/g, 10 mL/g, 7.5 mL/g, and 5 mL/g), types of acids (H2SO4 and H3PO4), watt power (600 W, 700 W, and 800 W) and time (3, 5 and 8 min), were carefully investigated. The highest fermentable sugar content of 88.1 g/L ± 0.7 g/L (0.88 g fermentable sugars/g dry cassava pulp) was achieved when 20 mL/g cassava pulp was hydrolyzed with 2.5% (v/v) H2SO4 under microwave irradiation at 800 W for 8 min. Glucose was a major product (82.0 g/L ± 5.2 g/L). The inhibitor concentration was 5.17 g/L ± 0.01 g/L, and the levulinic acid concentration was 5.15 g/L ± 0.01 g/L. The results indicated that the liquid-to-solid ratio, diluted acid concentration, irradiation watt power and time were important factors in producing fermentable sugars from acid hydrolysis under microwave irradiation. The crude hydrolysate was used for PHB production by Cupriavidus necator strain A-04. The hydrolysate to nutrients ratio of 30:70 (v/v) yielded a cell dry weight of 7.5 g/L ± 0.1 g/L containing PHB content of 66.8% ± 0.3% (w/w), resulting in a yield YP/S (g-PHB/g-SPHB) of 0.35 g/g. This study demonstrated that the microwave-assisted cassava pulp hydrolysate developed in this study provided a high amount of glucose (88.1% conversion) and resulted in a low concentration of inhibitors without xylose; this was successfully achieved without pregelatinization, alkaline pretreatment or detoxification.

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Implementing circular economy concept by converting cassava pulp and wastewater to biogas for sustainable production in starch industry

Cited by 2 publications

References 18 publications

Factors for the implementation of the circular economy in Big Data environments in service companies in post pandemic times of COVID-19: The case of Colombia

Factors for the implementation of the circular economy in Big Data environments in service companies in post pandemic times of COVID-19: The case of Colombia

Microwave-assisted cassava pulp hydrolysis as food waste biorefinery for biodegradable polyhydroxybutyrate production

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