An integrated ecosystem incorporating renewable energy leading to pollution reduction for sustainable development of craft villages in rural area: a case study at sedge mats village in Mekong Delta, Vietnam

Le, Thanh-Hai; Tran, Van Thanh; Le, Quoc Vi; Nguyen, Thi Phuong Thao; Schnitzer, Hans; Braunegg, Gerhart

doi:10.1186/s13705-016-0088-6

Cited by 14 publications

(9 citation statements)

References 50 publications

(58 reference statements)

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“…1). This model by Le et al was developed to achieve zero emission in agriculture and contribute to sustainable livelihoods for farmers in the Mekong Delta [29]. It is derived from the typical model of agriculture-fishpond-livestock-biogas system.…”

Section: Conceptual Frameworkmentioning

confidence: 99%

Energy efficiency in an integrated agro-ecosystem within an acidic soil area of the Mekong Delta, Vietnam

et al. 2020

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Background Both exergy and energy analysis methodologies are used for analysing energy efficiencies in various processes, including agriculture. This study focuses on the connection of three main process components (husbandry-crop-fishpond) in a typical farming household located within an acid soil region of rural Vietnam. The concept of exergy analysis is used to underline the potential for resource efficiency in alternative processes in the agricultural system. For development of an integrated ecological system aiming towards zero emissions, the analytical methods of material cycles and energy flows utilized a set of indicators of resource efficiency in a sustainable agriculture. Results The design of the ideal integrated farming system “Agro-Industrial Zero Emissions Systems” (AIZES) can increase the system efficiency by making use of indigenous natural materials and waste reuse/recycling. Recycling waste produce energy, fish feed and fertilizer can result in a decreased environmental load of approximately half. Using exergy analysis to calculate an indicator non-renewable yield ratio (NRYR), the systems verified sustainability of agriculture production. Conclusions The farming household will be able to subsidize their fuel and electricity consumption by utilizing biogas. Surplus biogas will be distributed to proximate households, further creating sustainable goals. Biochar, created by mixing the biomass residues with local plants, will improve soil quality and pig sludge, mixed with biomass residue, will create high-quality fertilizer.

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Section: Conceptual Frameworkmentioning

confidence: 99%

Energy efficiency in an integrated agro-ecosystem within an acidic soil area of the Mekong Delta, Vietnam

et al. 2020

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“…orchard (O) -shpond (F) -animal shed (S) -biogas digester (D) -housing (H) -plant (P) -waste treatment (T) -ecosystem (E) as in following detailed description (and is presented also in Fig.1). This model by Le et al was developed to achieve zero-emission in agriculture and contribute to sustainable livelihoods for farmers in the Mekong Delta [29]. It is derived from the typical model of agriculture -shpond -livestock -biogas system.…”

Section: Conceptual Frameworkmentioning

confidence: 99%

Energy efficiency in an integrated agro-ecosystem at the acid soil area in Mekong delta, Vietnam

Thảo

Tung²,

Thao³

et al. 2020

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Background: Both exergy and energy analysis methods are used for analysing energy efficiency in all kind of processes, and can be used also in agriculture. The study focuses on the connection of the three main process components (husbandry-crop-fishpond) in a typical farming household in an acid soil region in rural Vietnam. The concept of exergy analysis is used to underline the potential for energy efficiency in alternative processes in the agricultural system. To develop an integrated ecological system towards zero-emission, the analytical methods of material cycles and energy flows use a set of indicators of resource efficiency in a sustainable agriculture.Results: The design of the ideal integrated farming system “Agro-Industrial Zero Emissions Systems” (AIZES) can increase the system efficiency by making use of indigenous natural materials and waste reuse, recycling. Recycling waste for energy, fish feed and fertilizing can result a decrease in half of environmental load. Using exergy analysis to calculate an indicator non-renewable yield ratio (NRYR), the systems imply sustainability of agriculture production.Conclusions: The farming household will be able to replace fuel and electricity resulting in energy self-sufficiency to distribute surplus biogas to surrounding households. Biochar created by mixing the biomass residues with local plants can improve soil quality. Pig sludge can become nutritious fertilizer when mixed with biomass residues. Also, utilizing biogas can reduce purchased electricity.

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“…In an integrated agriculture and smale-scale industry system, biogas tank is a construction that converts organic waste into energy, and biogas is provided for household activities or as fuel for the production of handicraft products. The treated wastewater from the biogas tank was used for planting in agriculture (Le et al, 2016;Schnitzer et al, 2016;. In the areas where there are drought and a shortage of water supply, the agro-based zero-emission integrated system (AZEIS) has brought a significant effect on wastewater treatment and recovering the main nutrients (such as N and P) for agricultural activities, saving cost and reducing inorganic fertilizers and water input for the farm (T. V. Tran et al, 2017;.…”

Section: Introductionmentioning

confidence: 99%

“…Integrated systems based on waste-to-energy conversion can increase system efficiency by making use of indigenous natural materials and waste reuse/recycling. Recycling of waste can produces energy, fish feed, and fertilizer, and it results in a decreased environmental impact of approximately 50% (Le et al, 2016;Thao et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Specific energy consumption and heat recovery system of cassava starch production in the integrated agro-industrial system

Giau

Kien

Thanh

et al. 2022

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Reducing energy consumption and green house gas emissions is a crucial issue in the cassava starch processing industry. In this study, the integrated system combining livestock, cassava cultivation and cassava production at the same area will lead to both zero emission goal and economic efficiency, a typical example of an effective agro-industrial symbiosis. A heat exchange/recovery system was applied including the economizer, the heat exchanger tank, the biogas tank, and the boiler. The economizer attached to the boiler’s chimney transfers heat from exhaust gases for pre-heating feed water entering boiler. The biogas tank recovers energy from the wastewaters of starch production and livestock farm, and the generated biogas was used as fuel for the boiler. Excess heat from the production was used for evaporating (removal of) NH3 in wastewater flow from the biogas tank, and for heating the biogas system in oder to enhance the efficiency of methane production. A biochar filter was attached to economizer for adsorption of released ammonium, and the biochar after adsorption was combined with sludge from the biogas tank to produce a solid biofertilizer. The energy and exergy efficiency, energy losses, and exergy destruction for heat recovery system were analyzed. The specific energy consumption (SEC) was used to evaluate the overall energy efficiency for cassava starch factory with a capacity of 200 tons/day. The results show that there is a high potential to recyle waste into energy in the cassava starch industry, and the total energy saving and reducing GHG emissions per year of the cassava starch factory were 5.4%/year and 278,773 tons CO2/year, respectively.

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An integrated ecosystem incorporating renewable energy leading to pollution reduction for sustainable development of craft villages in rural area: a case study at sedge mats village in Mekong Delta, Vietnam

Cited by 14 publications

References 50 publications

Energy efficiency in an integrated agro-ecosystem within an acidic soil area of the Mekong Delta, Vietnam

Energy efficiency in an integrated agro-ecosystem within an acidic soil area of the Mekong Delta, Vietnam

Energy efficiency in an integrated agro-ecosystem at the acid soil area in Mekong delta, Vietnam

Specific energy consumption and heat recovery system of cassava starch production in the integrated agro-industrial system

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