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

2020 ◽  
Author(s):  
Nguyen Thi Thu Thao ◽  
Tra Van Tung ◽  
Nguyen Thi Phuong Thao ◽  
Son Le Thanh ◽  
Sibylle Braunegg ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Exergy Analysis ◽  
Acid Soil ◽  
Mekong Delta ◽  
Farming System ◽  
Agricultural System ◽  
Main Process ◽  
Fish Feed ◽  
Biomass Residues ◽  
Farming Household

Abstract 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.

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

2020 ◽  
Author(s):  
Nguyen Thi Thu Thao ◽  
Tra Van Tung ◽  
Nguyen Thi Phuong Thao ◽  
Son Le Thanh ◽  
Sibylle Braunegg ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Rural Areas ◽  
Exergy Analysis ◽  
Acid Soil ◽  
Mekong Delta ◽  
Agricultural System ◽  
Main Process ◽  
Fish Feed ◽  
Biomass Residues ◽  
Farming Household

Abstract 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 areas, Mekong delta, 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.

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

2020 ◽  
Author(s):  
Nguyen Thi Thu Thao ◽  
Tra Van Tung ◽  
Nguyen Thi Phuong Thao ◽  
Son Le Thanh ◽  
Sibylle Braunegg ◽  
...  
Keyword(s):  
Exergy Analysis ◽  
Acid Soil ◽  
Electricity Consumption ◽  
Mekong Delta ◽  
Farming System ◽  
Resource Efficiency ◽  
Agricultural System ◽  
Main Process ◽  
Fish Feed ◽  
Farming Household

Abstract 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.

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

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Nguyen Thi Thu Thao ◽  
Tra Van Tung ◽  
Nguyen Thi Phuong Thao ◽  
Son Le Thanh ◽  
Sibylle Braunegg ◽  
...  
Keyword(s):  
Exergy Analysis ◽  
Acid Soil ◽  
Electricity Consumption ◽  
Mekong Delta ◽  
Farming System ◽  
Resource Efficiency ◽  
Agricultural System ◽  
Main Process ◽  
Fish Feed ◽  
Farming Household

Abstract 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.

scholarly journals Design of integrated farming system for sustainable livelihoods within an acidic soil in Long An province

2020 ◽  
Vol 4 (2) ◽  
pp. First
Author(s):  
Nguyen Thi Thu Thao ◽  
Le Quoc Vi ◽  
Tra Van Tung ◽  
Tran Trung Kien ◽  
Nguyen Thi Phuong Thao
Keyword(s):  
Energy Efficiency ◽  
Mekong Delta ◽  
Farming System ◽  
Efficiency Analysis ◽  
Acidic Soil ◽  
Small Scale ◽  
Large Area ◽  
Acid Sulfate ◽  
Integrated Farming ◽  
Energy Efficiency Analysis

Long An province, located in the Mekong Delta, has a large area of acid sulfate soils, of which tremendously high acidic soil of Thanh Hoa ward. Due to the toxic factors in the high acid sulfate soil, the area suffers the harsh natural conditions that leading to livelihoods limitation in terms of freshwater supply, drainage, agricultural cultivation, and environmental sanitation as well. The study approach is to build an integrated farming system based on the close loop of material and energy flows for a typical small-scale farm in acidic areas in Long An province for sustainable agriculture. Therefore, the potential systems meet the objectives of recycling waste by the energy efficiency analysis based on energy conversion and by the economic analysis. The results show that pig production and cultivated orchard obtain high profits. Energy efficiency from raising pigs accounts for a high proportion (50%) whereas the ratio of fish production and orchard has not reached 10%. Energy efficiency analysis implies the potential options with optimal efficiencies tend to biogas treatment and composting. In addition, the three-year lifetime system is more efficient than the one-year system. However, the household financial capacity plays the most important role in selecting for the suitable farming system as well as installation of treatment systems.

scholarly journals An Economic-environmental-energy Efficiency Analysis for Optimizing Organic Waste Treatment of a Livestock-orchard System: A Case in the Mekong Delta, Vietnam

2021 ◽  
Author(s):  
Nguyen Thi Thu Thao ◽  
Tran Thi Hieu ◽  
Nguyen Thi Phuong Thao ◽  
Le Quoc Vi ◽  
Hans Schnitzer ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Waste Treatment ◽  
Mekong Delta ◽  
Farming System ◽  
Economic Benefits ◽  
Small Scale ◽  
Energy Yield ◽  
Treatment Model ◽  
Objective Functions ◽  
System A

Abstract BackgroundEconomic benefit has been analyzed for the yield of farming products when designing a farming system, while waste treatment also generates profitable energy products for this system. The economic factor is decisive in decision-making for applying waste treatment solutions for a small-scale farming system. A household farming system in ​​the Mekong Delta generates many kinds of organic wastes, but most of the agricultural waste resources are disposed of into the environment. MethodsThis study approaches an analysis of economic-environmental-energy (EEE) efficiency for waste treatment of an integrated livestock-orchard (LO) system on a household scale in the Mekong Delta. This novel analysis method is based on the energy content of biomass and its cost. The EEE efficiency is optimized to gain objective functions regarding energy yield efficiency, system profit, and CO2 sequestration for the treatment model. The algorithms are built for optimizing these objective functions. ResultsThe optimization results show the treatment model of pyrolysis and pelleting gain all the objective functions with high efficiency. The model is efficiently applied for the LO system that generates more than 100 kilograms of orchard residues and 3,000 kilograms of pig manure. The system with a charcoal oven and pellet machine is capable to gain energy efficiency due to its potential biofuel products, such as biochars and pellet products. A treatment model of composting, pyrolysis, and pelleting gives the best performance of overall EEE efficiency. ConclusionsThis work has proven economic benefits from integrating biogas tank, charcoal oven, and pellet machine in an integrated LO system. The system contributes not only for reducing CO2 emissions but also for supplementing secondary renewable bioenergy, as well as for increasing incomes and thus supporting livelihoods for the local farming households.

scholarly journals ANALISA ENERGI DAN EKSERGI PADA PENGERINGAN TEPUNG TAPIOKA MENGGUNAKAN PENGERING KONTINYU UNGGUN FLUIDISASI GETAR

REAKTOR ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 24 ◽  
Author(s):  
Suherman Suherman ◽  
Rona Trisnaningtyas
Keyword(s):  
Energy Efficiency ◽  
Fluidized Bed ◽  
Exergy Analysis ◽  
Cassava Starch ◽  
Energy Utilization ◽  
Exergetic Efficiency ◽  
Energy And Exergy ◽  
Vibrated Fluidized Bed ◽  
Energy And Exergy Analysis ◽  
Utilization Ratio

Energy and exergy analysis of cassava starch drying in continuous vibrated fluidized bed dryer were carried out to assess the performance of the system in terms of energy utilization ratio, energy efficiency, exergy inflow and outflow, exergy loss, and exergetic efficiency. The results showed cassava starch has starch content 87%, degree of whiteness 95%, negative fiber content, sperichal granula with average diameter12.32 μm, orthorhombic crystal structure and crystal size 47.467 nm . Energy utilization and energy utilization ratio increased from 0.08 to 0.20 J/s and 0.35 to 0.4 as the drying temperature  increased from 50 to 70 oC. Energy efficiency increased from 13.80 % to 23.31 %, while exergy inflow, outflow, and losses increased from 4.701 to 14.678, 2.277 to 6.344, and 2.424 to 8.334 J/s respectively in the above temperature range. Exergetic efficiency decreased with increase in drying air temperature, while exergetic improvement potential increased with increased drying air temperature. Keywords: Cassava starch, continuous drying, energy and exergy analysis, vibrated fluidized bed Abstrak Analisis energi dan eksergi pengeringan pati tapioka menggunakan pengering kontinu unggun fluidisasi getar, telah dilakukan untuk menilai kinerja sistem dalam bentuk utilisasi energi, efisiensi energi, eksergi masuk dan keluar, eksergi hilang dan efisiensi eksergi. Hasil analisis pati memiliki kandungan starch 87%, tingkat keputihan 95%, kandungan serat negatif, bentuk partikel granular spherical dengan diameter 12,32 μm, struktur kristal orthorhombic dan ukuran kristal sebesar 47,467 nm. Peningkatan suhu pengering dari 50 menjadi 70 0C akan meningkatkan utilisasi energi dan rasio utilisasi energi dari 0,08 menjadi 0,20 J/s dan 0,35 menjadi 0,4. Efisiensi energi meningkat dari 13,80% hingga 23,31%, sedangkan eksergi masuk dan keluar, eksergi hilang meningkat dari 4,701 menjadi 14,678, 2,277 menjadi 6,344, dan 2,424 menjadi 8,334 J/s. Efisiensi eksergi menurun dengan naiknya suhu sedangkan potensi pengembangan eksergi meningkat dengan naiknya suhu. Kata kunci:. Analisis energi dan eksergi, pati tapioka, pengeringan kontinu, unggun fluidisasi getar

scholarly journals Intellectual Property Theft Protection in IoT Based Precision Agriculture Using SDN

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1987
Author(s):  
Md. Selim Hossain ◽  
Md. Habibur Rahman ◽  
Md. Sazzadur Rahman ◽  
A. S. M. Sanwar Hosen ◽  
Changho Seo ◽  
...  
Keyword(s):  
Intellectual Property ◽  
Precision Agriculture ◽  
Integrated Management ◽  
Regulatory System ◽  
Farming System ◽  
Cumulative Distribution ◽  
Packet Error Rate ◽  
Agricultural System ◽  
Time Jitter ◽  
Intellectual Property Theft

In this work, we examine the privacy and safety issues of Internet of Things (IoT)-based Precision Agriculture (PA), which could lead to the problem that industry is currently experiencing as a result of Intellectual Property Theft (IPT). Increasing IoT-based information flow in PA will make a system less secure if a proper security mechanism is not ensured. Shortly, IoT will transform everyday lives with its applications. Intellectual Property (IP) is another important concept of an intelligent farming system. If the IP of a wise farming system leaks, it damages all intellectual ideas like cultivation patterns, plant variety rights, and IoT generated information of IoT-based PA. Thus, we proposed an IoT enabled SDN gateway regulatory system that ensures control of a foreign device without having access to sensitive farm information. Most of the farm uses its devices without the use of its integrated management and memory unit. An SDN-based structure to solve IP theft in precision farming has been proposed. In our proposed concept, a control system integrates with the cloud server, which is called the control hub. This hub will carry out the overall PA monitoring system. By hiring the farm devices in the agricultural system, these devices must be tailored according to our systems. Therefore, our proposed PA is a management system for all controllable inputs. The overall goal is to increase the probability of profit and reduce the likelihood of IPT. It does not only give more information but also improves information securely by enhancing the overall performance of PA. Our proposed PA architecture has been measured based on the throughput, round trip time, jitter, packet error rate, and the cumulative distribution function. Our achieved results reduced around (1.66–6.46)% compared to the previous research. In the future, blockchain will be integrated with this proposed architecture for further implementation.

Yang Terbuang, Yang Membangun: Studi Perubahan Sosial Di Kecamatan Waeapo Kabupaten Buru Oleh Eks Orang-Orang Buangan 1969-1979

2021 ◽  
Vol 7 (1) ◽  
pp. 45
Author(s):  
Naomi Lesbatta ◽  
Widhi Handayani ◽  
Pamerdi Giri Wiloso
Keyword(s):  
Social Change ◽  
Farming System ◽  
Forced Labor ◽  
Agricultural System ◽  
New Order ◽  
Cultivation System ◽  
Remote Areas ◽  
The People ◽  
The Government ◽  
Colonial Government

Buru Regency is one of the rice suppliers in Maluku Province.The achievements of Buru Regency as Maluku rice supplier cannot be separated from its history as a place for people who were exiled in 1969. The presence of these former people has an influence on social change in Buru Island. Located in Waeapo district, Buru regency, this qualitative research was conducted to explain social change in Waeapo, Buru by the former exiles. The results showed that before the former exiles arrived at Buru Island, the Waeapo was dominated by forests, where the local people practiced swidden agriculture. The presence of former exiles in 1969 changed the landscape of Buru from forest to paddyfields by means of forced labor. The forced labor and introduction of new agricultural system are patterns inherited from the colonial government. Nevertheless, in Buru, the harvest was consumed by the exiles instead of handed over to the government as a custom enforced by the colonials. The change in land use eventually changed the shifting cultivation system to permanent agriculture with the lowland rice farming system which is commonly practiced in Java. Ex-exiles were the people used by the New Order government to carry out development in remote areas in the 1969-1979 era until the change of Buru’s landscape, source of staple food, and cultural diversity exist in Waeapo..

scholarly journals Machinability and Energy Efficiency in Micro-EDM Milling of Zirconium Boride Reinforced with Silicon Carbide Fibers

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3920 ◽  
Author(s):  
Mariangela Quarto ◽  
Giuliano Bissacco ◽  
Gianluca D’Urso
Keyword(s):  
Energy Efficiency ◽  
Process Parameters ◽  
Advanced Materials ◽  
Cavity Surface ◽  
Main Process ◽  
Zirconium Boride ◽  
Electrode Wear ◽  
Micro Edm ◽  
Process Performance ◽  
Sic Fibers

Several types of advanced materials have been developed to be applied in many industrial application fields to satisfy the high performance required. Despite this, research and development of process suited to machine are still limited. Due to the high mechanical properties, advanced materials are often considered as difficult to cut. For this reason, EDM (Electrical Discharge Machining) can be defined as a good option for the machining of micro components made of difficult to cut electrically conductive materials. This paper presents an investigation on the applicability of the EDM process to machine ZrB2 reinforced by SiC fibers, with assessment of process performance and energy efficiency. Different fractions of the additive SiC fibers were taken into account to evaluate the stability and repeatability of the process. Circular pocket features were machined by using a micro-EDM machine and the results from different process parameters combinations were analyzed with respect to material removal, electrode wear and cavity surface quality. Discharges data were collected and characterized to define the actual values of process parameters (peak current, pulse duration and energy per discharge). The characteristics of the pulses were used to evaluate the machinability and to investigate the energy efficiency of the process. The main process performance indicators were calculated as a function of the number of occurred discharges and the energy of a single discharge. The results show interesting aspects related to the process from both the performances and the removal mechanism point of view.

scholarly journals Total Factor Energy Productivity and Efficiency Changes of the Gher (Prawn-Carp-Rice) Farming System in Bangladesh: A Stochastic Input Distance Function Approach

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3482 ◽  
Author(s):  
Sanzidur Rahman ◽  
Basanta Barmon
Keyword(s):  
Energy Efficiency ◽  
Technical Progress ◽  
Distance Function ◽  
Farming System ◽  
Energy Performance ◽  
Function Approach ◽  
Rice Farming ◽  
Energy Productivity ◽  
Input Distance Function ◽  
Stochastic Input

This paper measures energy performance, Total Factor Energy Productivity (TFEP), technical change (TC) and energy efficiency change (EEC) of the gher (prawn-carp-rice) farming system using a unique panel data of 90 farmers covering a 14 year period (2002–2015) from southwest Bangladesh by employing a stochastic input distance function approach. Results reveal that all inputs contribute significantly to energy productivity of the gher farming system with male labor energy input being the major contributor followed by energy from machineries, seeds and chemicals. Energy performance of the High Yielding Variety (HYV) rice enterprise is highly efficient whereas the prawn enterprise is highly energy inefficient. Furthermore, energy performance of the HYV rice enterprise improved significantly over time. Significant competition exists between HYV rice and prawn enterprises as well as prawn and carp enterprises. Experience and education significantly improve energy efficiency whereas gher area and household size significantly reduces it. TFEP grew at the rate of 2.56% per annum (p.a.) solely powered by technical progress at the rate of 2.57% p.a. Gher system can be sustained in the long-run driven by technical progress and improvements in energy productivity of the HYV rice enterprise. Policy implications include investments in R&D and education targeted at the gher farmers.

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