Volume-10, Issue-10, October 2024

Abstract

Rapid urbanization and industrialization cause not only the reduction of agriculturally usable areas, but also a certain degree of modification of traditional cultivation practices. Cultivation of plants with the use of new technologies, characterized by the absence of land use, is experiencing significant development in areas of unconventional agriculture, primarily in areas with a lack of land or unsuitable soil quality. The article discusses the design of an island system for local year-round production of seasonal food using an alternative source of energy. The output is the design of your own hydroponic system with automatic control.

Keywords: Hydroponics, Plants, Island System.

References

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Abstract

Due to the current development of the state of fossil resources, efforts are being made to replace extractable energy sources with renewable sources that would have less impact on the environment during the production, transport and consumption processes. Hydrogen is a promising universal energy carrier that could gradually replace the currently used fossil fuels to a large extent. The article discusses the problem of mixing hydrogen into natural gas using simulation in the ANSYS CFX program into the proposed distribution network, as well as its behaviour in a mixture with natural gas in the case of reduced consumption by the consumer, or during downtime or repairs, when the flow in the intake pipe is reduced or completely stopped.

Keywords: ANSYS CFX, hydrogen, natural gas.

References

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Abstract

In response to the deficiencies of the Crayfish Optimization Algorithm (COA), such as slow convergence speed and susceptibility to local optima when solving complex optimization problems, an improved Crayfish Optimization Algorithm (ICOA) with a hybrid strategy is proposed. This improvement incorporates five strategies: an enhanced position update function for followers from the Sparrow Algorithm, a refined spiral position update function from the Whale Optimization Algorithm, modifications to the criteria and methods for assessing food size, the golden ratio coefficient, and an information accumulation function. Optimization tests conducted on 12 benchmark functions demonstrate that the improved algorithm shows enhancements in both convergence speed and optimization performance. Finally, experiments applying the improved optimization algorithm to engineering application problems further validate the superiority of the enhanced Crayfish Optimization Algorithm.

Keywords: Classical test functions, COA, Engineering Constraint Problems, Information Accumulation.

References

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Abstract

The article examines the Archimedes wind turbine model with a diameter of 1,500 mm in terms of the strength of its construction. It describes in detail the material properties of the turbine produced by means of alternative methods, specifically by means of the Selective Laser Sintering additive technology. By combining CFD simulation and strength analysis, the article solves the influence of the pressure force of the wind and the speed of the turbine on the tension and deformations in its construction. The results are compared with commercially available turbines made of composite materials.

Keywords: Wind Energy, Wind Turbine, Strength Analysis, Computational Fluid Dynamics.

References

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Abstract

Requirements for increasing the environmental friendliness of electricity and heat production to reduce the emission footprint are increasing the demands on the used fuels. For the replacement of conventional fuels in the process of combined production of electricity and heat, it is possible to use synthetic gases, which are created during processes of thermal recovery of biomass and waste. The presented article discusses the possibilities of using synthesis gas obtained by thermal recovery of waste in a plasma reactor in cogeneration units. For the experiment, different ratios of mixtures of natural gas and synthesis gas were used to reduce the consumption of fossil fuel without significantly reducing the performance of the cogeneration unit. The primary combustibles in the synthesis gas were hydrogen and carbon monoxide, the calorific value of which differs from that of methane, causing changes in fuel consumption to maintain the required unit performance. For the full possibility of using synthesis gas as a replacement in cogeneration units, further research is necessary both in the field of its use in combustion engines and in the field of its acquisition and primary purification.

Keywords: Hydrogen, Cogeneration Unit, Syngas, Renewable Fuels.

References

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Abstract

The series of articles (Analysis of the selected types of waste treatment by plasma technology. Part I., Part II.) discusses the processing of selected three types of waste using plasma technology. In this first part, the technology of plasma gasification and melting, is presented, as well as the processed types of waste. It involves the disposal of solid waste such as ash from municipal waste, silicone rubber and asbestos-cement material.

Keywords: Thermal Treatment of Waste, Ash from Municipal Waste, Silicone Rubber and Asbestos-Cement Material, Plasma Technology.

References

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Abstract

Emerging contaminants are increasingly reported in Indian wastewater and receiving waters, but routine monitoring is constrained by the large number of substances that may require analytical attention and by evidence that is distributed unevenly across occurrence, treatment behaviour and ecological risk. This study develops a quantitative framework for prioritising contaminants for monitoring by integrating these three dimensions. Seventeen primary Indian studies were retained in the quantitative evidence base. Nine contaminants—ibuprofen, carbamazepine, diazepam, ciprofloxacin, diclofenac, bisphenol A, paracetamol, triclosan and caffeine—had sufficient evidence for integrated scoring. Occurrence was represented by the number of independent Indian studies reporting each contaminant; treatment persistence was represented by an operational persistence score based on reported or evidence-supported removal behaviour; and ecological risk was represented by a relative score derived from reported hazard or risk quotients. The three components were combined using weights of 40%, 30% and 30%, respectively. Ibuprofen obtained the highest Overall Priority Score (OPS, 85.9), followed by ciprofloxacin (78.5), carbamazepine (78.3), diclofenac (73.5) and triclosan (72.3). Caffeine had the highest occurrence coverage, with 13 independent studies, but the lowest OPS (56.2) because of comparatively lower persistence and risk contributions. Sensitivity analysis showed that ibuprofen, ciprofloxacin and carbamazepine remained within the upper part of the ranking across alternative weighting schemes, although the exact order changed. The framework provides a transparent and updateable screening approach for monitoring prioritisation while explicitly recognising heterogeneity, geographic imbalance and incomplete treatment and risk evidence in the Indian literature. 

Keywords: Emerging Contaminants, Environmental Monitoring, Indian Aquatic Environments, Wastewater Treatment, Treatment Persistence, Ecological Risk, Prioritisation, Pharmaceuticals, Water Quality.

References

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