Innovative biorefinery concept for biogas-based digestate with rice bran protein-rich feed ingredient for tilapia production

Whangchai, Niwooti; Ramaraj, Rameshprabu; Whangchai, Kanda; Nomura, Noboru; Pimpimol, Tipsukhon

doi:10.1007/s13399-020-01098-x

Cited by 12 publications

(4 citation statements)

References 17 publications

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“…Thus, there is a necessity to conduct the study in order to know the guideline for increased production to meet the market demands and for the commercial production of the prawn by the farmers. Because of industrialization, global urbanization, and economic development, solid waste generation is increasing rapidly, which requires immediate and practical solutions (Whangchai et al 2020).…”

Section: Nomenclature and Abbreviationmentioning

confidence: 99%

Waste to wealth: A sustainable circular bioeconomy approach of chicken manure powder for increasing productivity of Lanchester’s freshwater prawn (Macrobrachium lanchesteri)

Tongmee

Mukdajaturaphak

Unpaprom

et al. 2021

Maejo Int. J. Energ. Environ. Comm. or MIJEEC

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A biorefinery is ideal because it can combine many processes to produce multiple bio-products from organic solid waste. Moreover, in view of socially rising energy demands and biodiversity conservation, biorefinery contributed as a sustainable strategic tool for the emerging circular bio-economy. In this research objective was to study some techniques to increase the productivity of Lanchester’s freshwater prawn in earthen ponds. The experiment using a completely randomized design was conducted. In six Nattearthen ponds, different amounts of chicken manure were applied to produce different amounts of phytoplankton (green algae). The first pond was control, then, the 2nd to 6th ponds were applied with chicken manure in 30, 60, 90, 120 and 150 kg/rai/week, respectively. The prawns were fed twice daily with 5% of total body weight using 40% protein diet. The results of the study showed that feeding with different densities of phytoplankton (green algae) affected the productivity of Lanchester's freshwater prawn significantly. The highest productivity of Lanchester's freshwater prawn was 566.30 ±4.88 g from the pond applied with chicken manure of 120 kg/rai/week. The productivity of Lanchester’s freshwater prawn applied with 90, 30, 60, 150 and 0 kilograms/rai/week of chicken manure was 416.53 ± 9.89, 295.43 ± 5.46, 281.13 ± 4.63, 275.39±4.78 and 265.86 ±4.79 g, respectively. In conclusion, the effect of different densities of phytoplankton (green algae) increased the productivity of Lanchester's freshwater prawn (Macrobrachium lanchesteri).

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Section: Nomenclature and Abbreviationmentioning

confidence: 99%

Waste to wealth: A sustainable circular bioeconomy approach of chicken manure powder for increasing productivity of Lanchester’s freshwater prawn (Macrobrachium lanchesteri)

Tongmee

Mukdajaturaphak

Unpaprom

et al. 2021

Maejo Int. J. Energ. Environ. Comm. or MIJEEC

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“…Biogas plant owners from rural areas also considered giving the digestate to other farmers (5%). Therefore, it is visible, that even though digestate has nutritional value [34] and has high fertilising potential [35], this potential is still not being met. On the other hand, even though farmers are showing interest in further usage of digestate, there are several drawbacks, such as is a lack of relevant techniques to process the digestate before application to the field.…”

Section: Demographic and Socio-economic Characteristics Of The Respondentsmentioning

confidence: 99%

Economics and perception of small-scale biogas plant benefits installed among peri-urban and rural areas in central Vietnam

Verner

Mazancová

Jelínek

et al. 2021

Biomass Conv. Bioref.

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The implementation of biogas plants in Southeast Asia brings many benefits to the households through socio-economic, environmental and health improvements. This paper expands the knowledge on essential aspects of biogas implementation such as socio-economic impact, post-adaptation perception and cultural habits related to traditional fuel use, focusing on differences in household economics and livelihood diversity at the peri-urban-rural continuum. A questionnaire survey was conducted from July to September in Thua Thien Hue Province central Vietnam, among rural (n=55) and peri-urban (n=63) households owning a biogas plant of various ages. Our results show that technical problems with biogas plants were influenced by the age of the biogas plant and the owners' experience with the management of the plant. The reduction of costs on energy was the main reason for households to install a biogas plant. However, households with biogas plants in the rural area experienced lower profitability and an almost two-times longer pay-back period than those situated near cities (internal rate of return equals 20.20% and 48.16%, respectively). Furthermore, our study shows that biogas plant installation reduces firewood consumption, particularly in peri-urban areas. The saved time initially needed for dung management or firewood collection/management, households members used predominantly for leisure and household chores, less on income-generating activities. Our study concludes that rural areas face operational problems more frequently, which, together with lower economic efficiency, negatively affect the successful implementation of biogas plants in remote areas of central Vietnam.Keywords Small-scale biogas plants • Cost-benefit analysis • Peri-urban-rural continuum * Hynek Roubík

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“…Predominantly, the ammonia in these ponds originates from the protein metabolism of fish feed and is excreted through urine and the decomposition of leftover feed and waste in sediments (Tongmee et al, 2020;Tongsiri et al, 2020). In aquaculture systems, especially ones using water recirculation, the water in the fishponds often contains elevated levels of nitrogen compounds (Whangchai et al, 2022). Therefore, effective waste management strategies must be implemented to monitor and control ammonia levels, ensuring a healthy and sustainable aquatic environment for the fish.…”

Section: Introductionmentioning

confidence: 99%

Enhancing enzyme digestibility of red tilapia (Oreochromis niloticus and O. mossambicus) and improving water quality in fish farming using Napier grass silage

2024

ANRES

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Importance of the work: Utilizing locally available and more affordable plant-based raw materials could mitigate the increasing costs of raw fish feed ingredients. This study should enhance understanding regarding using Napier grass (Pennisetum purpureum 'Pak Chong 1') as a fish feed ingredient and its effect on fish, digestive enzyme activities and water quality in aquaculture. Objectives: To assess the efficacy of different processed forms of Napier grass as a feed ingredient for red tilapia (hybrid between Oreochromis niloticus and O. mossambicus) and efficacy of extracted tannins in reducing the ammonia content in water. Materials & Methods:The in vitro digestibility was analyzed of four Napier grass variants (dried, fresh, fermented and boiled). Proteolytic, amylase and cellulase enzyme activity levels were assessed.Tannin extraction was used to evaluate the efficiency of Napier grass extracts in reducing water ammonia levels based on the microwave method, which yielded a higher tannin content than the reflux method. Then, the extracted tannins were applied to water samples to examine their efficacy in reducing the ammonia content. Results: The red tilapia fed fermented Napier grass (SN) had the highest enzymatic activity, with trypsin activity at 0.439 µmol DL-alanine/g feed, amylase activity at 0.828 µmol maltose/g feed, while the cellulase activity was 587.123 µmol maltose/g feed (p < 0.05). The application of Napier grass extracts successfully reduced the ammonia content in the water samples at 0.15 mg/l NH 3 -N/g dry Napier grass. Evidence for the binding of tannic acid and ammonium ion was identified. Main finding: Napier grass, particularly in its fermented form, can serve as an effective alternative feed for aquaculture. Tannin extracted from Napier grass efficiently reduced the ammonia content in water.

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Innovative biorefinery concept for biogas-based digestate with rice bran protein-rich feed ingredient for tilapia production

Cited by 12 publications

References 17 publications

Waste to wealth: A sustainable circular bioeconomy approach of chicken manure powder for increasing productivity of Lanchester’s freshwater prawn (Macrobrachium lanchesteri)

Waste to wealth: A sustainable circular bioeconomy approach of chicken manure powder for increasing productivity of Lanchester’s freshwater prawn (Macrobrachium lanchesteri)

Economics and perception of small-scale biogas plant benefits installed among peri-urban and rural areas in central Vietnam

Enhancing enzyme digestibility of red tilapia (Oreochromis niloticus and O. mossambicus) and improving water quality in fish farming using Napier grass silage

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