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:10.1186/s42834-021-00093-9

Cited by 31 publications

(14 citation statements)

References 19 publications

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“…It is the most popular BCT in Thailand because it does not have a very high investment cost and is relatively easy to operate and maintain [5]. However, for the cassava starch industry, the MCL is the most popular system because MCL, which was developed from a conventional anaerobic lagoon to overcome the sedimentation problem of sludge in the ACL, supports the fluctuation/variance of solid waste in each production season and has low investment and operating costs [2].…”

Section: Resultsmentioning

confidence: 99%

“…To maximize the resource use efficiency, problems associated with the conversion of cassava pulp into biogas need to be overcome. However, the economic factor is the main concerning criterion when considering investing in biogas technology [2]. It can be seen that the more complex biogas conversion technology (BCT), the higher the investment and operating costs.…”

Section: Introductionmentioning

confidence: 99%

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Economic and Environmental Assessment of Different Biogas Conversion Technologies for Cassava Pulp Treatment in Thailand: A Case Study

Lerdlattaporn

Phalakornkule

Ruenglertpanyakul³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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This research investigates the economic and environmental impact of various suitable biogas conversion technologies and their energy utilization options (electrical and thermal) on cassava pulp treatment. The results showed that the anaerobic cover lagoon (ACL), modified cover lagoon (MCL), and anaerobic baffled reactors (ABR) were the most suitable options in terms of the investment cost, which was the major factor influencing the selection of biogas technology. The ACL and MCL technologies had the highest values of NPV, a high IRR and a short payback period regardless of the energy utilization options due to their low investment and operating costs.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Economic and Environmental Assessment of Different Biogas Conversion Technologies for Cassava Pulp Treatment in Thailand: A Case Study

Lerdlattaporn

Phalakornkule

Ruenglertpanyakul³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…The steps to change from a linear to a circular economy were described in SMEs [63]. Even a recent publication describes a literature review around Industry 4.0, showing advances and this process [64] It has been described as implementing the circular economy concept by converting cassava pulp and wastewater to biogas for sustainable production in the starch industry [65]. Other's efforts include the building and construction sector, highlighting evidence of the development and use of alternative construction materials and the advancement of circular business models and smart cities and their relations with the CE [66].…”

Section: Literature Reviewmentioning

confidence: 99%

Factors for Implementation of Circular Economy in Firms in COVID-19 Pandemic Times: The Case of Peru

et al. 2021

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The circular economy can contribute to the eco-efficient use of resources. Firms can obtain relevant benefits if they implement a circular economy. In Peru, the circular economy would create benefits, but it is not fully clear what factors explain the acceptance of firms of implementing a circular economy. Following the theory of planned behavior, the current research assesses the influence of attitudes, subjective norms, perceived behavioral norms, intentions, and pressures on behaviors towards the circular economy. A total of 71 medium-size firms based in Peru participated in an online survey. Six questions were focused on general information, and forty-seven questions evaluated the circular economy behavior of firms. A partial least square structural equation modeling technical analysis was used. It was found that attitudes (0.144), subjective norms (0.133), and perceived behavioral control (0.578) had a positive influence on intentions; also, perceived behavioral control (0.461) had a positive influence on behaviors towards the circular economy. Finally, pressures had a positive influence (0.162) on behaviors towards the circular economy. The model explained 64.3% of the behaviors towards the circular economy. The outcomes of the bootstrapping test were used to evaluate if the path coefficients are significant. This study showed that attitudes, subjective norms, perceived behavioral norms, intentions, and pressures explained circular economy behaviors. This information can help firms develop strategies to move forward a circular economy and provide governments information about the current situation of circular economy implementation to generate new norms and strategies for more implementation of circular economy measures in enterprises. The novelty is based on using the PLS-SEM technique.

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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 ( Phun-iam 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 31 publications

References 19 publications

Economic and Environmental Assessment of Different Biogas Conversion Technologies for Cassava Pulp Treatment in Thailand: A Case Study

Economic and Environmental Assessment of Different Biogas Conversion Technologies for Cassava Pulp Treatment in Thailand: A Case Study

Factors for Implementation of Circular Economy in Firms in COVID-19 Pandemic Times: The Case of Peru

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

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