scholarly journals The W Model, a Systematic Engineering for Water Source Clearance, Renewable Energy Production, and Ecological Agricuture Development – A Proposal for Sustainable Development

2017 ◽  
Vol 10 (5) ◽  
pp. 143
Author(s):  
Tongyuan Wang
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Organic Fertilizer ◽  
Water Source ◽  
Small Towns ◽  
Living Environment ◽  
Economic Feasibility ◽  
Organic Fertilizers ◽  
Ecological Agriculture ◽  
Agriculture Development

This article proposes a systematic engineering for sustainable economic and ecologic development. This system is deemed to be applicable in any country of the world. The system aims to realize five important objectives: water source clearance, energy saving and emission reduction, renewable energy and organic fertilizer production, and ecological agriculture development, all in large scale and at low cost. The main conception of the new system to reach these goals is the replacement of the conventional sewage treatment approach with more efficient and more ecological process – the natural fermentation of the mixture of the urban sewage and agrarian wastes, such that water body clearance, including water de-eutrophication, green algae prevention and siltation dredging will all be accomplished at virtually a zero cost. Along with this process, the system can produce a vast amount of renewable energy and organic fertilizers, consequently ecological agriculture development in large scale can be realized. As a result, this system will greatly reduce the use of chemical fertilizers thus largely reduce the consumption of fossil energy and the related polluting emissions. This system is thus fully a circular economy model through full west-reuse processes, which ultimately will enhance our life quality with healthier food and living environment. The system is flexible and adaptable to be implemented in either small towns or megacities. The implementation and operation of this system will also benefits employment growth. Lastly, in terms of economic feasibility and profitability, millions to billions of dollars of annual revenue can be generated from the running of this system in a country.

scholarly journals Effects of Organic Fertilization and Cover Crops on an Organic Pepper System

2008 ◽  
Vol 18 (2) ◽  
pp. 215-226 ◽  
Author(s):  
K. Delate ◽  
C. Cambardella ◽  
A. McKern
Keyword(s):  
Soil Fertility ◽  
Cover Crops ◽  
Cover Crop ◽  
Crop Production ◽  
Large Scale ◽  
Soil Analysis ◽  
Organic Fertilizer ◽  
The United States ◽  
Organic Fertilizers ◽  
Organic Farm

With the continuing 20% growth rate in the organic industry, organic vegetable crop production has increased to 98,525 acres in the United States. The requirement for certified organic vegetable producers to implement a soil-building plan has led to the development of soil fertility systems based on combinations of organic fertilizers and cover crops. To determine optimal soil fertility combinations, conventional and organic bell pepper (Capsicum annuum) production was evaluated from 2001 to 2003 in Iowa, comparing combinations of two synthetic fertilizers and three compost-based organic fertilizers, and a cover crop treatment of hairy vetch (Vicia villosa) and rye (Secale cereale) in a strip-tilled or fully incorporated cover crop system. Organic pepper growth and yields equaled or surpassed conventional production when nitrogen (N) was provided at 56 or 112 kg·ha−1 from compost-based organic fertilizer. Soil analysis revealed higher N in plots where cover crops were tilled compared with strip-tilled plots, leading to recommendations for sidedressing N in strip-tilled organic pepper production. Increased incidence of disease was also detected in strip-tilled plots. Postharvest weight loss after 6 weeks in storage was similar in organic and conventional peppers. The addition of calcium and sulfur products in conventional or organic fertilizer regimes did not increase pepper production or postharvest storage potential. Despite application challenges, cover crops will remain as critical components of the organic farm plan for their soil-building benefits, but supplementation with approved N sources may be required for optimal pepper production. Organic growers should conduct their own tests of organic-compliant soil amendments to determine cost effectiveness and value for their site before large-scale application.

scholarly journals Economic analysis of organic greenhouse lettuce production in Turkey

2006 ◽  
Vol 63 (3) ◽  
pp. 285-290 ◽  
Author(s):  
Sait Engindeniz ◽  
Yuksel Tuzel
Keyword(s):  
Organic Fertilizer ◽  
Poultry Manure ◽  
Economic Feasibility ◽  
Organic Fertilizers ◽  
Vegetable Production ◽  
Health Issues ◽  
Economical Analysis ◽  
Greenhouse Vegetable ◽  
On Farm ◽  
Greenhouse Vegetable Production

Health issues and environmental concerns have drawn the attention to organic agriculture aiming to protect the natural balance and to produce without damaging the environment. This study aims determining economic feasibility of organic greenhouse lettuce (Lactuca sativa L.) in an on farm trial, to foster organic greenhouse vegetable production in the preservation area of Tahtali Dam, projected as the sole water resource of Izmir, Turkey's third largest. A 384 m² greenhouse, constructed of galvanized metal tubing anchored and covered with a polyethylene was analyzed to identify typical operation procedures, and to determine unitary construction and operation cost. Organic lettuces were produced during autumn season of 2001-2002, testing different organic fertilizer applications, including two rates of farmyard and poultry manure (30 and 50 t ha-1) with and without two organic fertilizers based on either bacteria or algae. Economical analysis was performed according to different organic fertilizer applications. Cost, yield, and price data were analyzed to determine the profitability of a typical operation. Net return obtained from organic lettuce growing ranged between us $ 0.376 and us $ 0.901 m-2, as a result of different fertilizer applications.

scholarly journals Increasing the Content of Olive Mill Wastewater in Biogas Reactors for a Sustainable Recovery: Methane Productivity and Life Cycle Analyses of the Process

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1029
Author(s):  
Souraya Benalia ◽  
Giacomo Falcone ◽  
Teodora Stillitano ◽  
Anna Irene De Luca ◽  
Alfio Strano ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Renewable Energy ◽  
Life Cycle ◽  
Life Cycle Costing ◽  
Olive Mill Wastewater ◽  
Economic Feasibility ◽  
Organic Fertilizers ◽  
Batch Reactors ◽  
Farm Sustainability ◽  
Olive Mill

Anaerobic codigestion of olive mill wastewater for renewable energy production constitutes a promising process to overcome management and environmental issues due to their conventional disposal. The present study aims at assessing biogas and biomethane production from olive mill wastewater by performing biochemical methane potential tests. Hence, mixtures containing 0% (blank), 20% and 30% olive mill wastewater, in volume, were experimented on under mesophilic conditions. In addition, life cycle assessment and life cycle costing were performed for sustainability analysis. Particularly, life cycle assessment allowed assessing the potential environmental impact resulting from the tested process, while life cycle costing in conjunction with specific economic indicators allowed performing the economic feasibility analysis. The research highlighted reliable outcomes: higher amounts of biogas (80.22 ± 24.49 NL.kgSV−1) and methane (47.68 ± 17.55 NL.kgSV−1) were obtained when implementing a higher amount of olive mill wastewater (30%) (v/v) in the batch reactors. According to life cycle assessment, the biogas ecoprofile was better when using 20% (v/v) olive mill wastewater. Similarly, the economic results demonstrated the profitability of the process, with better performances when using 20% (v/v) olive mill wastewater. These findings confirm the advantages from using farm and food industry by-products for the production of renewable energy as well as organic fertilizers, which could be used in situ to enhance farm sustainability.

scholarly journals MANEJO E VIABILIDADE ECONÔMICA DA IRRIGAÇÃO NO CULTIVO DE Calendula officinalis L.

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 29
Author(s):  
Catariny Cabral Aleman ◽  
Patricia Angélica Alves Marques
Keyword(s):  
Organic Fertilizer ◽  
Dry Mass ◽  
Economic Feasibility ◽  
Organic Fertilizers ◽  
Net Income ◽  
Calendula Officinalis ◽  
Organic Fertilization ◽  
Economic Management ◽  
Calendula Officinalis L ◽  
E Mail

MANEJO E VIABILIDADE ECONÔMICA DA IRRIGAÇÃO NO CULTIVO DE Calendula officinalis L.  CATARINY CABRAL ALEMAN¹ E PATRICIA ANGÉLICA ALVES MARQUES² ¹Departamento de Engenharia Agrícola, UFV, Avenida PH Rolfs, s/n, 36570-000, Viçosa, MG, Brasil, e-mail: [email protected]²Departamento de Engenharia de Biossistemas, UFV, Avenida Pádua Dias, 11, 13418-900, Piracicaba, São Paulo, Brasil, e-mail: [email protected]  1 RESUMO O objetivo do trabalho foi verificar a influência de lâminas de irrigação baseadas na evaporação do Tanque Classe A (ECA) na produtividade e avaliar a viabilidade econômica do uso da irrigação e adubação orgânica no cultivo de calêndula. O experimento foi conduzido em um delineamento de blocos ao acaso, com esquema de parcelas subdivididas e quatro repetições. Os tratamentos de irrigação foram: sem irrigação (0), 50%, 75% e 100% ECA e o efeito da adubação orgânica: testemunha sem adubação orgânica e adubação orgânica com esterco bovino curtido. Avaliou-se massa seca de capítulos florais, produtividade, teor e rendimento de flavonóides, custos fixos e totais de produção, receitas líquida e relação B/C. A irrigação foi viável para o cultivo sem adubação para 75 e 100% ECA e para o cultivo com adubação apenas para 50% ECA. O manejo econômico adequado é a utilização de lâmina de irrigação de 100% ECA sem adição da adubação orgânica, utilizando motor elétrico com tarifa verde. Palavras-chave: análise de risco; manejo de recursos hídricos; eficiência do uso da água; plantas medicinais.  ALEMAN, C. C.; MARQUES, P. A.MANAGEMENT AND ECONOMIC VIABILITY OF IRRIGATION IN THE CULTIVATION OF Calendula officinalis L.   2 ABSTRACT The aim of the study was to determine the influence of irrigation levels based on pan evaporation Class A (ECA) in productivity and evaluate the economic feasibility of the use of irrigation and organic fertilizer on marigold cultivation. The experiment was conducted in a design of randomized blocks with split plots and a four-replication scheme. The irrigation treatments were: no irrigation (0) 50%, 75% and 100% ECA and the effect of organic fertilization: control with no fertilization and organic fertilization with cattle manure. We evaluated dry mass of capitula, productivity, content and yield of flavonoids, fixed and total costs of production, net income and B/C ratio. Irrigation was feasible for cultivation with no fertilization for 75 and 100% ECA and for cultivation with fertilizer, only at 50% ECA. Proper economic management is the use of irrigation depth of 100% ECA with no addition of organic fertilizers, using electric motor with green tariff. Keywords: risk analysis; management of hydric recourse; water use efficiency, medicinal plant. 

Assessment of bioenergy development potential in agricultural enterprises

2020 ◽  
pp. 165-171
Author(s):  
Iryna Hryhoruk
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Agricultural Waste ◽  
General Structure ◽  
Geographical Location ◽  
Economic Assessment ◽  
Energy Resources ◽  
Industrial Complex ◽  
Renewable Energy Resources ◽  
Energy Potential

Exhaustion of traditional energy resources, their uneven geographical location, and catastrophic changes in the environment necessitate the transition to renewable energy resources. Moreover, Ukraine's economy is critically dependent on energy exports, and in some cases, the dependence is not only economic but also political, which in itself poses a threat to national security. One of the ways to solve this problem is the large-scale introduction and use of renewable energy resources, bioenergy in particular. The article summarizes and offers methods for assessing the energy potential of agriculture. In our country, a significant amount of biomass is produced every year, which remains unused. A significant part is disposed of due to incineration, which significantly harms the environment and does not allow earning additional funds. It is investigated that the bioenergy potential of agriculture depends on the geographical distribution and varies in each region of Ukraine. Studies have shown that as of 2019 the smallest share in the total amount of conventional fuel that can be obtained from agricultural waste and products suitable for energy production accounts for Zakarpattya region - 172.5 thousand tons. (0.5% of the total) and Chernivtsi region - 291.3 thousand tons. (0.9%). Poltava region has the greatest potential - 2652.2 thousand tons. (7.8%) and Vinnytsia - 2623.7 thousand tons. (7.7%). It should be noted that the use of the energy potential of biomass in Ukraine can be called unsatisfactory. The share of biomass in the provision of primary energy consumption is very small. For bioenergy to occupy its niche in the general structure of the agro-industrial complex, it is necessary to develop mechanisms for its stimulation. In addition, an effective strategy for the development of the bioenergy sector of agriculture is needed. The article considers the general energy potential of agriculture, its indicative structure. The analysis is also made in terms of areas. In addition, an economic assessment of the possible use of existing potential is identified.

scholarly journals Correlation between Elderly Migrants’ Needs and Environmental Adaptability: A Discussion Based on Human Urbanization Features

2021 ◽  
Vol 18 (10) ◽  
pp. 5068
Author(s):  
Yi Hua ◽  
Zhi Qiu ◽  
Wenjing Luo ◽  
Yue Wang ◽  
Zhu Wang
Keyword(s):  
Urban Community ◽  
Hierarchical Cluster ◽  
Small Towns ◽  
Living Environment ◽  
Rural Settlements ◽  
Structured Interviews ◽  
Elderly Migrants ◽  
Environmental Adaptability ◽  
Community Environments ◽  
Rural Group

Building concentrated resettlement community in small towns is mostly used to deal with resettlement construction for rural migrants in economically developed regions in China, which leads to migrants’ living environment changing from rural settlements where production and living are intertwined to an urban community that only supports living functions. However, the urbanized environment is contrary to elderly migrants’ behavior, resulting in contradictions or conflicts between migrants and resettlement communities, reflecting a lack of urbanization synchronization between migrants and resettlement community environments. Further, elderly migrants are also equipped with different degrees and types of urbanization characteristics, thus reflecting different abilities to adapt to the urban community environment. Based on the corresponding relationship between people’s different production and living needs and urbanization, this research starts by investigating the production and living needs of elderly migrants, and further clarifies the environmental adaptability of elderly migrants by sorting the types and characteristics of urbanization of elderly migrants to provide a reference basis for the planning and construction of future resettlement areas. The research uses questionnaires and semi-structured interviews to investigate the population attributes and characteristics of elderly migrants, as well as their different needs for production and living. The research uses hierarchical cluster analysis, the one-way ANOVA test and Chi-square test to constructed a four-quadrant model on human urbanization features: an Urban Group with both living and production urbanized (Group H-H); a Half-urban-half-rural Group with only living needs urbanized (Group H-L); a Half-urban-Half-rural Group with only production needs urbanized (Group L-H); and a Rural group with both living and production needs not urbanized (Group L-L). Finally, based on the results, this research proposed three elderly environment construction orientations of “Promote the Supply Level of Urban Public Services”, “Create a Place That Embodies the Spirit of Immigrants’ Homeland”, and “Moderate Consideration of Agricultural Production Needs” for residential planning.

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