Economically Research Articles

Triiodide ionic liquids used for selective and sustainable palladium recovery from waste catalysts

The Pd recovery from waste catalysts (W-catalysts) is a globally significant subject due to the high value of Pd across various industries. However, severe environmental contamination and excessive energy usage are well-known issues in Pd recovery attributed to the use of hazardous leaching agents and poor recovery conditions. Here, we present a new recovery method based on triiodide ionic liquids (ILs) with greatly reduced environmental impact and reagent costs, along with mild reaction conditions. This method enables the selective leaching of waste Pd0 from diverse W-catalysts to produce Pd2+. In a mild (50 °C) and low viscosity (59.8 cP) operating environment, the leaching efficiency of this process is approximately 98.4 %. Moreover, redox mechanism and shrinkage kinematic models are thorough investigation. Notably, economic analysis demonstrates that recycling 1.0 kg of W-catalysts could generate a significant profit of 3036.1 USD. By advancing Pd recovery closer to levels of practical application, this study will foster a more sustainable prospect for W-catalysts.

Sun-powered solutions: Investigating productivity and economics of small-scale solar desalination system

Freshwater demand is one of the most critical challenges facing many countries in the world. Jordan is a country in the middle east that is considered one of the poorest countries for renewable freshwater supplies in the world. Though desalination may be one of the solutions to the problem, the cost and energy expenses could be an obstruction. However, with an abundance of annual solar irradiance in Jordan, solar desalination systems, particularly small-scale ones, are considered better alternatives. In this study, a residential-scale solar desalination system is investigated. The design includes evacuated-tube solar heaters with a heat pipe, and flashing units comprising three desalination stages. The experiments included single-stage, double-stage, and triple-stage desalination. The results showed that production rates of 2.2 kg/m2 using single-stage, 4.7 kg/m2 using double-stage, and 6.4 kg/m2 using triple-stage desalination were obtained from the system. The solar water heater used in the system exhibited an average thermal efficiency of 73 %. The economic analysis revealed that the payback period for the triple-stage desalination system is 8 years. The annualized rate of return was calculated to be 2.2 %, assuming the system operates for 4 h per day and 300 days per year.

Transient Ischaemic attack Emergency Referral (TIER): randomised feasibility trial results

BackgroundEarly assessment of patients with suspected transient ischaemic attack (TIA) is crucial to provision of effective care, including initiation of preventive therapies and identification of stroke mimics. Many patients with...

Innovative enhancements in solar still performance: A comprehensive study on wick-absorber configurations

This study introduces a new thermo-fluid analysis of using wick-absorbers to enhance solar still performance. Three configurations of wick absorbers were tested in a conventional single-slope solar still: (i) Case I: individual wick balls, (ii) Case II: zig-zag wick pattern, and (iii) Case III: rectangular wick array (grid-like pattern). The study evaluates multiple parameters, including saline water temperature, daily water productivity, Nusselt number, Sherwood number, thermal and exergy efficiencies, water cost, and payback period. The addition of an absorbing plate with an insulation layer led to lower saline water temperatures and shifted peak values. Compared to a traditional still, wick utilization enhanced water productivity by 45.8 %, 84.5 %, and 86 % for Cases I, II, and III, respectively, due to increased evaporation rates. This resulted in a relative enhancement in daily thermal efficiency by 64 %, 76 %, and 97.5 %, respectively. Additionally, four correlations were developed to describe Nusselt and Sherwood numbers, with a maximum deviation of 25 %. Economic analysis demonstrated cost-effectiveness, significantly reducing water cost and the payback period by 37 %, 39 %, and 44 % for Cases I, II, and III, respectively, compared to the conventional system.

Influence of Plant Density and Fungicides on Downy Mildew (<i>Peronospora Destructor</i>) and Bulb Yield of Onion in Ethiopia

Onion is a popular vegetable crop, which has been produced for its daily uses and economic benefits. Downey mildew caused by the fungus <i>Peronospora</i> <i>destructor</i> is among the most important yield-reducing factor in onion production. The effect of three different levels of plant population and fungicide frequency with two different fungicides was studied on downy mildew severity and yield of onion. Nineteen treatment of this Experiment included two fungicides mancozeb + metalaxyl and copper hydrox-ide, three different spraying interval with (10 days, 15 days and 21 days) and three level of plant population (0.71, 0.95 and 1.2 million plants/ha). The experiment was laid out in a randomized block design with three replications for two year at Fogera and for one year at Dera districts of South Gondar zone Ethiopia. Data on disease severity, bulb yield, bulb number and bulb size were recorded during the time of harvest. The price of bulb yield was assessed from the local market and the total price of the yield obtained from each treatment was computed on hectare basis. Input costs like seed, fungicides and labor were converted into hectare basis according to their frequencies used. Fungicides cost was estimated based on the price of the local market. Cost of the labor was in Birr per man-days; cost of spray and spray equipment to spray per hectare were also calculated. Based on the obtained data from the above mentioned parameters economic analysis was performed. The lowest disease severity was recorded in treatment were lowest level of plant population (0.71 million plant/hectare) spraying with fungicide mancozeb + metalaxyl within 15days interval. In this treatment bulb yield and bulb weight were the highest. The economic evaluation showed that the highest net benefit with acceptable marginal rate of return was obtained from T3 (0.71million plants/ha spraying with fungicide mancozeb + metalaxyl within 15days interval).

Techno-Economic Feasibility Analysis of Post-Combustion Carbon Capture in an NGCC Power Plant in Uzbekistan

As natural gas-fired combined cycle (NGCC) power plants continue to constitute a crucial part of the global energy landscape, their carbon dioxide (CO2) emissions pose a significant challenge to climate goals. This paper evaluates the feasibility of implementing post-combustion carbon capture, storage, and utilization (CCSU) technologies in NGCC power plants for end-of-pipe decarbonization in Uzbekistan. This study simulates and models a 450 MW NGCC power plant block, a first-generation, technically proven solvent—MEA-based CO2 absorption plant—and CO2 compression and pipeline transportation to nearby oil reservoirs to evaluate the technical, economic, and environmental aspects of CCSU integration. Parametric sensitivity analysis is employed to minimize energy consumption in the regeneration process. The economic analysis evaluates the levelized cost of electricity (LCOE) on the basis of capital expenses (CAPEX) and operational expenses (OPEX). The results indicate that CCSU integration can significantly reduce CO2 emissions by more than 1.05 million tonnes annually at a 90% capture rate, although it impacts plant efficiency, which decreases from 55.8% to 46.8% because of the significant amount of low-pressure steam extraction for solvent regeneration at 3.97 GJ/tonne CO2 and multi-stage CO2 compression for pipeline transportation and subsequent storage. Moreover, the CO2 capture, compression, and transportation costs are almost 61 USD per tonne, with an equivalent LCOE increase of approximately 45% from the base case. This paper concludes that while CCSU integration offers a promising path for the decarbonization of NGCC plants in Uzbekistan in the near- and mid-term, its implementation requires massive investments due to the large scale of these plants.

2024 International Conference on Education, Economics, Management, and Social Sciences(EMSS 2024)

Welcome to the official website of the 2024 International Conference on Education, Economics, Management, and Social Sciences (EMSS 2024), scheduled to take place from September 25-26, 2024 in Melbourne, Australia! EMSS 2024 offers a prestigious platform for scholars, educators, researchers, and practitioners in the fields of education, economics, management, and social sciences to share their latest research insights, innovative methodologies, and cutting-edge solutions. This conference serves as a global forum to foster interdisciplinary discussions, collaborations, and the exchange of ideas on some of the most critical and emerging issues in these fields. We are proud to gather participants from various sectors who will engage in thought-provoking discussions and debates on topics of major societal relevance, including advances in educational practices, economic strategies, management approaches, and social sciences. The conference aims to provide valuable contributions to both academic research and practical applications. EMSS 2024 is committed to highlighting original, high-quality research papers that advance theoretical understanding, offer practical implications, and contribute to policy-making. Each paper has been rigorously reviewed based on its technical merit, research significance, and real-world impact, ensuring a high standard of academic excellence. We would like to extend our deepest gratitude to the esteemed members of the technical and organizing committees, whose diligent efforts in reviewing and improving the submissions have significantly elevated the quality of the conference proceedings. Additionally, we express our heartfelt thanks to the authors for their contributions, collaboration in adhering to the conference guidelines, and for sharing their unique insights and innovative research. We look forward to the intellectual exchange, networking opportunities, and collaborative potential that EMSS 2024 will bring. We hope you enjoy the conference! EMSS 2024 Conference Chairs

Incorporating iron oxide nanoparticles in polyvinyl alcohol/starch hydrogel membrane with biochar for enhanced slow-release properties of compound fertilizers

Biochar-based fertilizers show promise in enhancing nutrient utilization and soil health, but their slow-release performance remains a challenge. Herein, hydrogel membranes incorporating iron oxide nanoparticles within a polyvinyl alcohol and starch matrix (Fe/PVA/ST) were synthesized. These membranes were utilized to coat compound fertilizer particles, with biochar powder applied to the outer layer to form what is known as Fe/PVA/ST-BSRFs. The results revealed that Fe/PVA/ST-BSRFs exhibit markedly improved slow-release performance compared to both PVA/ST-BSRFs lacking iron nanoparticles and commercial compound fertilizers. Within a 30-day period, the cumulative leaching ratios of N, P, and K from Fe/PVA/ST-BSRFs with 0.75 % iron content were significantly lower compared to other tested fertilizers, with values of 22.87 %, 34.93 %, and 84.08 %, respectively. Furthermore, the incorporation of iron oxide nanoparticles into the PVA/ST membrane enhanced its swelling and water-retention properties without compromising its biodegradability. Mechanistic investigations revealed that the exceptional slow-release properties of Fe/PVA/ST-BSRFs stem from a combination of nutrient diffusion control outside the membrane and the loose control mechanism of the membrane. Pot tests demonstrated that Fe/PVA/ST-BSRFs effectively promoted the growth of chili plants while ensuring high utilization of N-P-K and improving the nutritional indices of chili fruits. Economic analysis further underscored the promising application prospects of Fe/PVA/ST-BSRFs.

Performance evaluation of bio-oil and high rubber content modified asphalt: More effective waste utilization

In this study, the bio-oil was used to reduce the viscosity and preparation temperature of high content of rubber-modified asphalt. The high rubber content modified bio-asphalt (RMBA) was prepared, the rubber and bio-oil contents were 20 %-30 % and 5 %-15 % (mass ratio of neat asphalt), respectively. The viscosity, temperature sweep (TS), frequency sweep (FS), multi-stress creep recovery (MSCR), and bending beam rheometer (BBR) tests were performed to assess the properties of RMBA. The Fourier Transform infrared spectroscopy (FTIR), Fluorescence microscopy (FM), and Scanning electron microscope (SEM) tests were conducted to explore the microscopic morphology of RMBA. Besides, the economic analysis and life cycle assessment (LCA) were assessed. Bio-oil contributed to the viscosity-reduction of the RMBA. When the rubber content was 30 %, the viscosity decreased by 48.16 % with a bio-oil content of 15 %. The temperature and frequency sensitivity of RMBA were lower than neat asphalt. Rubber improved the creep recovery and anti-rutting deformation behavior for bio-asphalt. The absorption peaks appeared at 1010 and 1038 cm−1, which represented the SO function group. The rubber did not absorb enough bio-oil for solubilization. This resulted in the functional group of SO appeared in 30 %+B-10 % and R-30 %+B-15 %. FM and SEM test results indicated that the rubber in RMBA exists in different states: undissolved rubber and dissolved rubber. The high content rubber could be partially dissolved in bio-asphalt and retained its elastic properties. The dissolved rubber particles exhibited a large crosslinked network structure. The raw material cost of RMBA decreased significantly with the rise of rubber and bio-oil contents. The reasonable application of waste rubber is beneficial to the alleviation of black pollution. The efficient application of rubber and bio-oil could contribute to the development of waste utilization and green transportation.

An evaluation model for an optimal decarbonisation process in the built environment

PurposeThe goal is to deliver a decision-support framework to both public and private entities engaged in energy retrofit investments in the property market.Design/methodology/approachThe evaluation algorithm that is being offered takes an innovative approach to financial and economic analysis. Its foundation is a market-driven/cost-driven method, drawing logic from operational research and goal programming.FindingsThe algorithm is tested to a real estate portfolio yielding an optimal asset retrofitting schedule. The ranking list is determined by taking into consideration a variety of parameters, including investment costs and total CO2 emissions from energy retrofit initiatives. The Carbon Risk Real Estate Monitor’s (CRREM) emission targets for 2030 are employed as a reference point in the process of creating a ranking list of the assets that compose the real estate portfolio under examination.Practical implicationsThe evaluation algorithm will allow to determine, in a real estate portfolio, a priority list of assets to be enhanced. This is accomplished by taking into account the client’s financial resources, the overall cost of the intervention programmes for each asset, and the effects that each asset would have on the environment and the energy once the suggested retrofit programme is put into place.Originality/valueThe study proposes a methodological approach that seeks to balance the optimisation of energy performance, the reduction of environmental effect, the promotion of social well-being and economic sustainability in the context of managing the current property sector.

Turbine system vs engine generator in the production of energy by methane in the pacific of Mexico: a technical, economic, and environmental analysis.

This paper aims to analyze the potential of energy production using methane from organic waste as a sustainable alternative to mitigate the environmental impact of energy generation from fossil fuels and the generation of Municipal Solid Waste (MSW). To carry out the analysis, two technologies were evaluated from technical, economic, and environmental perspectives. The LandGEM model was used to estimate the methane generation potential. The amount of energy produced, along with the respective financial indicators, was also calculated. The results showed that for an average feed of 671,892 tons per year of waste, 6160 ft3/min of CH4 would be generated at a maximum peak in the tenth year, with an annual average of 4735 ft3/min. Additionally, 0.831 million metric tons of CO2 equivalent would be avoided. In terms of power generation, a combined cycle micro-turbine system with an installed capacity of 11.35 MW would be feasible and would yield an Internal Rate of Return (IRR) of 35% and a Net Present Value (NPV) of $11,608,006 USD. For an engine-generator system, it was not possible to verify profitability due to a significant increase in capital and O&M costs. These results are intended to provide reference information to assist in the decision-making process related to the implementation of projects aligned with the Sustainable Development Goals within the framework of the 2030 Agenda.

The post-Soviet break in economic ties between Russia and Africa: causes and consequences

The article analyzes the causes and consequences of the post-Soviet breakdown of economic ties between Russia and Africa. The post-Soviet period (since 1991) has led to a breakdown of economic ties between them. It means that trade, investment, and other forms of economic cooperation between the two sides have been significantly reduced or stopped completely. After the collapse of the Soviet Union at the initiative of Mikhail Gorbachev, Africa really became a “non-subject” for diplomats and military personnel stationed in the region, and some economic actors witnessed Moscow’s first initiatives. It was only in early 2018, on the occasion of the arrival of the first shipments of Russian weapons and dozens of “advisers” from Moscow in Bangui, that the French media learned of Russia’s “great comeback” in Africa. This Central African prism powerfully shaped perceptions in Paris: Russian involvement would be a new phenomenon echoing the confrontation between East and West, and Central Africa would be a crucial link in a grand strategy on a continental scale, where Russia would be on its way to establishing itself as a major player. The severing of economic ties between Russia and Africa has negative consequences for both regions, including reduced trade, investment, and political influence, and Russia’s lack of resources and changing political priorities since the collapse of the Soviet Union are the main reasons for it.

Thermodynamic and economic analysis of a novel compressed air energy storage system coupled with solar energy and liquid piston energy storage and release

Compressed air energy storage (CAES) is one of the important means to solve the instability of power generation in renewable energy systems. To further improve the output power of the CAES system and the stability of the double-chamber liquid piston expansion module (LPEM) a new CAES coupled with liquid piston energy storage and release (LPSR-CAES) is proposed. The coupled LPEM conducts suction stage B at the end of the expansion stage, ensuring stable exhaust pressure and temperature for the module. By establishing the thermodynamic and economic models of LPSR-CAES, the effect laws of key node parameters on the system performance are investigated. The results show that the heat transfer between liquid droplets and air dominates the heat transfer in LPEM. The proposed LPEM exhibits excellent isothermal performance and stability, with a maximum temperature difference of about 20 K during the cycle, and stable exhaust temperature changes within 10 K. Under the design conditions, the converted electrical efficiency, round-trip efficiency, exergy efficiency and net present value of the system are 68.31 %, 58.86 %, 66.99 % and 12.25 M$ respectively. The higher the solar supplement temperature, the more outstanding the thermal and economic performance of the system. The short-term energy storage system performance of the proposed system is more prominent. Based on the actual light data, the system can achieve 72.09 % and 69.41 % of converted electrical efficiency and exergy efficiency, respectively, at the 219th day. The results of this study provide theoretical support for the engineering application of the proposed system.

Empirical study of facade retrofits for optimizing energy efficiency and cooling in school buildings in Saudi Arabia

Educational buildings in Saudi Arabia are characterized by high energy consumption, primarily due to cooling and lighting demands. This study aims to evaluate and optimize facade retrofitting strategies to improve energy efficiency and evaluate economic performance of many scenarios in Saudi school buildings, aligning with the sustainability objectives of Saudi Vision 2030. The research employs a simulation-based optimization methodology utilizing Design Builder software to explore key facade design variables, including Window-to-Wall Ratio, glazing type, local shading devices, and external wall insulation. The methodology is structured in sequential stages: it begins with the collection of base-case data, followed by a data-driven optimization process targeting specific design variables. This is then complemented by an economic and environmental assessment of the optimal retrofit scenarios, ultimately leading to the identification of the most effective energy-saving solution presented at the conclusion of the study. Through an optimization process, the research identifies retrofitting strategies that reduce cooling loads by up to 17 %, lighting energy consumption by 49 % and annual energy costs by 18 %. The study also includes an economic analysis of the retrofits, revealing significant savings in annual electricity costs and a reduction in the building's carbon footprint. This research contributes valuable insights into sustainable building practices, offering practical solutions for improving energy efficiency in the educational sector. The novelty of this study lies in its comprehensive analysis of facade retrofits within the context of extreme climatic conditions, which provides a replicable model for retrofitting educational buildings across the region. The findings have significant implications for policymakers, architects, and sustainability advocates seeking to meet Saudi Arabia's energy conservation goals.

Incremental Cost Benefit Ratio (ICBR) of Poly House and Open Field Conditions in Cabbage (Brassica oleracea var. capitata) after Chemical Intervention

This study evaluates the Incremental Cost Benefit Ratio (ICBR) between Poly house and Open field conditions in cabbage cultivation chemical intervention. The research aimed to compare the economic feasibility of adopting poly house technology over traditional open field methods, considering costs and benefits associated with chemical inputs. A comparative cost analysis was conducted to assess production expenses like costs for insecticidal treatments and labor charges. Yield data from both environments were collected to determine output differences and subsequent economic returns. Results indicate that Incremental cost benefit ratio of cabbage heads yields to the cost of treatments in poly house and open field presented as there was a significant superior difference in ICBR ratio of poly house with 1: 0.946 as compared to open field with 1: 0.639 of cabbage heads. The economic analysis revealed that the higher yields and quality achieved in poly house conditions due to less dissipation and undisturbed environmental factors on insecticide applied. Resulting in a favorable incremental Cost benefit ratio compared to open field cultivation.

Оподаткування і фіскальна соціологія: фінансова думка Заходу та уроки для України

Introduction. In the process of fair interaction between authorities and taxpayers, a relationship of trust is created. This trust ensures support for government fiscal initiatives from the business sector. Conversely, if the relationship is not transparent and equitable, it can lead to a passive or even negative attitude towards taxes, thereby reducing the efficiency of the tax system. Problem Statement. There is a gap in Ukrainian fiscal theory, which is still underdeveloped in terms of fiscal sociology. Compared to Western countries, where fiscal sociology has already become an integral part of economic analysis, in Ukraine this issue has been studied only by a narrow circle of scholars. This limitation necessitates a deeper study and integration of sociological approaches into financial science, because without it, Ukrainian researchers and policy makers lose the opportunity to gain a more complete understanding of the interaction between economic and social processes. The purpose is to substantiate the directions of integration of fiscal sociology into Ukrainian financial theory and to develop recommendations for its inclusion into Ukrainian financial practice. Methods. The methods used are systematic, structural-functional, comparative analysis, analogy, grouping, description, comparison and generalization. Results. It is proved that by integrating fiscal sociology, Ukrainian fiscal theory can benefit from a more nuanced understanding of the socio-economic factors influencing fiscal policy. Such integration could lead to more effective policy making and a deeper understanding of the economic challenges facing Ukraine. Conclusions. Ukrainian academics and policymakers should prioritize the interdisciplinary study of fiscal policy, taking into consideration the rich tradition of fiscal sociology in the West. Joint efforts should be made to develop tax policies that strengthen state legitimacy by addressing issues of fairness, transparency, and trust. Strategies for managing public debt and improving tax morale should be a central element of fiscal policy to ensure that Ukraine's financial system can withstand socioeconomic pressures and contribute to long-term stability and development.

Study of Physical Mechanical Characteristics, Economic Viability, and Carbon Emission Impacts of Recycled Aggregate

aims: The study aims to evaluate the viability of using recycled aggregate (RA) from construction and demolition waste (CDW) as a sustainable alternative to natural aggregates in concrete production. background: Construction and demolition waste constitutes a significant portion of solid waste worldwide, posing considerable environmental challenges. objective: To assess the mechanical properties and economic benefits of concrete made by substituting natural aggregate with recycled aggregate, and to understand the environmental impact through a lifecycle assessment of carbon emissions. method: The research involved analyzing the mechanical properties of RA, including density, water absorption, and crushing strength. A critical threshold for material efficiency was determined by substituting natural aggregate with RA in varying proportions. An economic analysis was performed to evaluate the financial viability, and a lifecycle assessment was conducted to quantify carbon emissions from concrete production to site transportation. result: Recycled aggregate concrete showed lower density, higher water absorption, and reduced crushing strength compared to natural aggregates. Optimal strength was achieved with a 40% replacement rate. Economic analysis indicated a favorable return on investment. Lifecycle assessment revealed that raw materials account for approximately 85% of total emissions in recycled concrete production. conclusion: Recycled aggregate is a feasible alternative to natural aggregate in concrete production up to a 40% substitution rate, offering significant mechanical, economic, and environmental benefits. However, optimizing raw material usage is crucial for enhancing the sustainability of recycled concrete. other: The study highlights the growing role of recycled aggregate in engineering applications and underscores the importance of advances in research and application methods to further integrate recycled materials in construction practices.

Global Gain, but Local Loss—National Park and Municipal Revenues in Poland

The paper analyzes the problem of stagnation in the creation of new national parks in Poland, identifying key barriers and proposing solutions. The background to the study refers to the role of national parks in nature conservation, but at the same time highlights the problem of the limited development of the park network in Poland, which remains at 1.05% of the country’s area—well below the EU average. The main obstacles identified by the author are the resistance of local governments due to the reduction in forest tax revenues and the differences in salaries between employees of national parks and state forests. Research methods included legal and economic analysis and a review of the literature on national park management. The results indicate that the problem can be solved by adequate financial compensation to local communities and the introduction of a co-management model that integrates the interests of local governments and parks. The article suggests that a change in the approach of the government administration and a more participatory management model can help to break the stagnation and increase the number of national parks, which is relevant not only for Poland but also for other countries struggling with similar challenges.

BEFORE NBER: WARREN NUTTER’S SOVIET RESEARCH AT THE CIA

Warren Nutter’s work as director of the National Bureau of Economic Research’s (NBER) Soviet growth project is his best-known contribution to economics and public affairs. Many histories of Sovietology note the oddity of Nutter’s selection as project director, given his apparent lack of prior experience studying the Soviet Union. This paper provides new context for Nutter’s selection to lead the NBER effort. From 1951 to 1952 Nutter was the acting chief of the Economic Capabilities Branch of the CIA’s Office of Research and Reports (ORR), and chairman of the Economic Analysis Subcommittee of the interagency Economic Intelligence Committee. In this capacity he managed at least three major research efforts, including an input-output analysis of the Soviet Union and contributions to two national intelligence estimates. Nutter may have been proposed as director of the NBER project by Robert Amory, the Deputy Director of Intelligence, in 1953. Nutter’s research for the CIA cultivated new analytic capacities for the agency and provided a foundation for his own work on the Soviet Union.

Crassocephalum crepidioides as a sustainable protein supplement in Chocolatemahseer (Neolissochilus hexagonolepis) diets: Implications for growth,health, and economic viability in sustainable aquaculture

This study investigated the potential of Crassocephalum crepidioides, an abundant weed as a protein supplement in chocolate mahseer (Neolissochilus hexagonolepis) diets. The plant replaced a combination of fish meal and mustard oil cake at 0%, 25%, 50%, 75%, and 100% in experimental diets. A 12-week feeding trial was conducted to assess growth performance, survival, biomass yield, digestive enzyme activity, blood parameters, and economic viability. Results indicated that C. crepidioides can effectively replace up to 61.3% of the combined fish meal and mustard oil cake protein without negatively impacting fish health or growth, while reducing feed costs. Fish fed diets with 25% replacement showed improved weight gain (15.5±0.7 g) and biomass yield (6.05±0.25 kg/m³) compared to the control (14.6±0.8 g and 5.75±0.28 kg/m³, respectively). Survival rates were high across all treatments (94.0- 97.3%). Digestive enzyme activities and blood parameters remained within normal ranges for inclusion levels up to 75%. Economic analysis revealed potential cost savings of up to 15.5% when incorporating C. crepidioides into mahseer diets. This finding presents an opportunity to develop low-cost fish feed for resource-poor farmers in Meghalaya, effectively converting a local weed into a valuable aquaculture input, with broader implications for sustainable aquaculture practices globally.