Environmental Progress & Sustainable Energy

Article	Citations
Issue Information ‐ Info for Authors	132
Bioclogging effects on mass transport using volume averaging method in bioretention cell treating wastewater: Theories	104
Resources for renewable natural gas: A Hawaii case study	67
Effect of substituting water source on the methane production from lignocellulosic biowaste during anaerobic digestion	55
A comprehensive review of coffee waste based adsorbents for the sequestration of different water contaminants	54
A bibliometric review on green hydrogen as an alternative for combined generation systems	48
Pedestrians' perceptions of different heat mitigation strategies for an urban river valley in Iran: Coupling a questionnaire survey with microclimate modeling	43
Experimental investigation of pyramid solar still performance enhanced by natural and volcanic pebbles‐based thermal storage	41
Effect of calcium hydroxide on the characteristics of volatile organic compounds emission during sewage sludge incineration	36
Photoactivation of nano MgO anchored g‐C3N4 enhances biodiesel production in Chlorella sorokiniana: A sustainable approach	34
A critical review on carbon materials from oil sludges: Activation, application and future prospects	34
Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi2O3 photocatalytic thin films	33
Flame and flow structure of premixed hydrogen/air combustion under different inlet flow rates	32
Experimental research on transforming different functional thresholds to improve double slope solar still productivity	32
Sustainable thermal energy storage in a cylindrical solar pond with calcium chloride stratification	31
Nifedipine and metronidazole photodegradation using sustainable Raphanus sativus leaf extract mediated zirconia nanoparticles: A novel green solution for	30
Preparation of carbon dioxide‐adsorbing materials from fly ash‐modified steel slag and their performance optimization	30
Cultivation of aerobic granular biomass in continuous flow‐intermittent decant type reactor fed with anaerobic effluent	29
Production and characterization of composite activated carbon from potato peel waste for cyanide removal from aqueous solution	29
MCDM approaches in BIM ‐driven decision‐making models in enhancing energy efficiency for sustainable	27
Comprehensive environmental and economic analysis of active‐mode greenhouse solar dryers for green peas processing	26
Design and fast uptake of fluoride using hybrid biopolymers encapsulated magnetic hydroxyapatite beads	26
Recent advancement in the application of metal based nanoadditive in diesel/biodiesel fueled compression ignition engine: A comprehensive review on nanofluid preparation and stability, fuel property,	26
A comprehensive review of nano clay: From development and applications to research opportunities	25
Activation of persulfate by iron‐loaded soybean straw biochar for efficient degradation of dye contaminants: Synthesis, performance, and mechanism	25

Environmental‐economic analysis of CCUS in a mature carbonate reservoir for oilfield decarbonization	25
The effect of surfactant on biosolubilization of weathered coal	25
Enhanced prediction of Cs removal by CST from Hanford tank waste with K accountability	24
Efficient photocatalytic degradation of emerging pollutants by green synthesized Prussian blue analogue nanocomposite	24
Innovative study for enhanced performance of the photogalvanic cells for solar energy conversion and storage	24
Navigating the complexities of advanced recycling: Processes, feedstock, and public health connections in the context of the global plastic pollution crisis	24
N719 dye as a sensitizer for dye‐sensitized solar cells (DSSCs): A review of its functions and certain rudimentary principles	24
Comparative experimental study of absorber plate designs in solar air collectors with a novel wing‐structured configuration	23
Energy optimization and economic evaluation of continuous supercritical water oxidation process	23
Synergistic enhancement in carbon nitride quantum dots@NaBiO3 for solar‐driven photocatalysis: A combined experimental and theoretical study	23
ZIF‐8 decorated FeMo nanoparticles: H2 Production from the catalytic hydrolysis of ammonia‐borane	22
Preparation and selective adsorption properties of Cu 2+ imprinted chitosan membranes	22
Two‐phase anaerobic codigestion of a cassava starch‐based biopolymer with papaya waste	21
Carbon constrained economic dispatch of a microgrid system based on different grid pricing strategies considering uncertainty	21
Methane conversion to H2 and carbon nanofibers over supported Ni catalysts: A sustainable process through utilization of deactivated catalysts	21
Experimental study of competitive heavy metals removal from multimetal solution using wheat bran as a biomaterial: Response surface methodology	21
An experimental study on synthesis of ternary biodiesel through potassium hydroxide catalyst transesterification	21
Novel sustainable flocculants based on rice straw biowaste grafted with hydroxyethyl methacrylate for industrial effluents water treatment	20
Effect of Albumin and Tryptone as environmental‐friendly additives on methane hydrate formation rate: Efficacy of a protein on promotion or inhibition of hydrate growth	20
Evaluation of environmental sustainability of the construction and operation phases of man‐made lakes; A case study: Chitgar Lake	20
Simultaneous adsorption/photo catalytic degradation of turquoise blue dye by silk fibroin— TiO 2	20
Optimizing biogas yields from chicken manure: A comparative study of Inocula in batch anaerobic digestion	19
Experimental investigation and numerical modeling using Halpin–Tsai equations and classical laminate theory on the mechanical performance of pineapple leaf/sisal hybrid fiber‐reinforced epoxy composit	19
Ag 0 particle channel Z scheme AgBr / C	19
A study on the microbial biocorrosion behavior of API 5 L X65 carbon steel exposed to seawater	19
A review of ultra‐low emission technologies for PM 2 .5	19
Role of Environmental, Social, and Governance in achieving the UN Sustainable Development Goals: A special focus on India	19
Impact of optimizing the cathode flow channel on proton exchange membrane fuel cell cold start performance	19
Esterification of oleic acid to biodiesel using biowaste‐based solid acid catalyst under microwave irradiation	18
Fabrication and stabilization of green nanosilver using gardenia yellow natural dyes for efficient degradation of bacteria	18
Application of novel phytosorbent to sequester chromium(VI) and lead(II) from aqueous phase: Optimization, equilibrium and kinetics	18
Simulation study of R1234ze and its mixed working medium in TEG‐ORC combined cycle	18
Thermodynamic and conductivity properties of chemical mixtures using fuzzy logic modeling	18
Dual mode operation of a sub‐cooler vapor injection assisted direct expansion solar‐ambient hybrid source heat pumps in tropical climates	17
Waste‐heat‐assisted zero‐liquid‐discharge route selection for flue gas desulfurization wastewater in a 2 × 1000  MW coal‐fired power plant	17
Direct mineral carbonation of fly ash under high pressure using acid mine drainage: Effects of solid‐to‐liquid ratio, stirring speed and CO2 pressure	16
Biodiesel production from sunflower and waste cooking oils using K2O/RGO catalyst	16
A progressive review on strategies to reduce exhaust emissions from diesel engine: Current trends and future options	16
Bioactive antioxidant additives from agro‐residues: Enhancing biodiesel stability for diesel engine applications	16
Research on the efficiency and influencing factors of realizing the value of ecological products in China's forestry and grassland industry	16
Enhancing performance and emission characteristics of a diesel engine using waste plastic oil enriched with carbon nanotubes	16
A new multi‐objective optimization of refrigeration cycles (Case study: “Optimization of transcritical carbon dioxide cycle”)	15
EDTA‐modified cellulose from sago bark (Metroxylon sagu) for anionic and cationic dyes removal	15
Fault detection in solar thermal images using Convolutional neural network and hybrid optimization approach	15
Parametric study for N2O conversion and reduction using cobalt‐oxide‐based catalysts	15
Assessment of homogeneous hybrid advanced oxidation process for degradation of para‐nitrophenol	15
Exploring the impact of SDS ‐modified ZnO – CeO	15
Issue Information ‐ Cover and Table of Contents	14
Issue Information ‐ Cover and Table of Contents	14
Optimizing the performance of solar evacuated tube collector systems for seawater desalination	14

Performance evaluation of a bifacial floating standalone photovoltaic system with different water bodies: An experimental investigation of 10E analysis	14
Performance investigation and estimation of the 1 kWp photovoltaic array for an isolated hilly area in India	14
Determining the exergy and energy efficiency of an organic Rankine cycle using fuzzy logic method	14
Preparation, characterization, and application of stable naphthalenediimide‐based metal–organic framework for cooperative capture low concentration uranium from wastewater	13
Valorization of waste biaxially‐oriented polypropylene plastic films by its co‐carbonization with almond leaves	13
NOx removal from simulated marine exhaust gas via wet absorption using TBAB/PBS composite solution and subsequent reduction by adding Na2	13
Hexagonal NiCo 2 O 4	13
Withdrawal: State of the art review of continuously variable speed wind turbines with hydraulic transmissions	13
A study of chevron type plate design on pressure drop and friction factor of brazed plate heat exchanger	13
Subcritical hydrothermal purification from oily sludge recovered from petroleum oily sludge by adding sodium hydroxide, sodium bicarbonate, and formic acid	13
Thermoeconomic and environmental co‐optimization of diesel combined heat and power systems via compression ratio tuning: Parametric study for residential application	13
Issue Information ‐ Cover and Table of Contents	13
Investigation of capacitor electrolyte performance of green synthesized Ni, Mg, and NiMg ‐citrates	13
Innovative optimization of insulation thickness: Integrating solar‐air temperature and advanced heating demand analysis for sustainable building design	12
Sustainable energy generation – Scenario development for Pakistan in the context of WWF's 2050 vision	12
Review of carbon dioxide sequestration by basalt mineral carbonation	12
NOx emission reduction of coal‐fired power plants through data‐driven model and particle swarm optimization	12
Issue Information ‐ Info for Authors	12
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Towards sustainable fuels: Nano‐catalysts for hydrodeoxygenation to green diesel	12
Synthesis of a novel hydrogel bead based on activated A lgerian thyme ( AATHB ) for the emerging p	12
Enhancement of compression ignition engine performance and emission reduction using pyrolyzed waste plastic oil blended with aluminum oxide nanoparticles	12
Experimental investigation of performance, emission, and combustion characteristics of a CI engine operating on blends of waste cooking oil biodiesel/diesel under variable compression ratio	12
Application of machine learning for optimization and modeling of turbidity removal from aqueous solution	12
Experimental investigation of hybrid solar drying with thermal energy storage systems for drying chili	12
The use of plant based materials in architecture: A review	12
Waste‐derived electrocatalysts for green hydrogen production: Standardized benchmarking, techno‐economic translation, and circular engineering barriers	12
The influence of TBAC additive on performance of electrochemically mediated amine regeneration	12
n‐Heptane reforming over Pt/Zr‐HMS catalysts for modeling and optimization of RON and operating conditions via response surface methodology	12
Contribution of different aerosol models to short‐wave direct radiation effects under clear and haze conditions	12
An empirical technique to predict monthly mean global solar radiation for PV applications in Indian context	12
Study on copper oxide modified biochar for activating persulfate high efficiency and application for the removal of bisphenol A	11
Energy benchmarking of industrial wastewater treatment plants: A case study of activated sludge systems in Isfahan, Iran	11
Dynamic testing of a new integrated collector storage solar water heater (ICSSWH) according to standard ISO 9459‐5: Use of a numerical approach for long‐term prediction in differ	11
A study on the influence mechanism of heat sink on marine thermoelectric generator based on energy and exergy analysis	11
Converting the energy of sea waves into electrical energy	11
The impact of input data resolution on neural network forecasting models for wind and photovoltaic energy generation using time series data	11
Greenhouse gas ( GHG ) emissions estimation of hazardous waste in oil and gas industry for 2020–2024	11
Hemp sawdust‐derived N/S/P‐doped high surface area activated carbons for supercapacitors: Correlation between structural properties and performance	11
Adaptive optimized fractional order control of doubly‐fed induction generator (DFIG) based wind turbine using disturbance observer	11
Study on preparation of the compound microbial deodorizer and deodorization characteristics	11
Effect of organic loading on bioelectricity generation potential of dual‐chambered microbial fuel cell treating chocolaterie wastewater	11
Catalytic effect of metal powder and MCM‐41/metal catalysts on the pyrolysis of cellulose	11
Photocatalytic removal of acetamiprid insecticide using Mn 0.802 Fe 0.	11
Sustainable efficiency indicator for urban transportation: Case study of public bus and rapid transit systems in Bangkok	10
Study of electric and hybrid vehicles in the form of alternative transport in Kazakhstan	10
Experimental and numerical analysis of hydrothermal behavior for different nanofluids in a shallowly dimpled tube heat exchanger	10
Factors influencing biohydrogen production from waste: Insights into substrates and operating conditions	10
Review on the optimization of iron‐based catalysts for Fenton‐like reactions through structural and dimensional engineering	10
Optimization of a common rail direct injection engine fuelled with gossypium seed biodiesel–tert‐butyl alcohol blends using Taguchi–Grey relational analysis and ANN	10
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Failure modes analysis and reliability enhancement of wind turbines	10
Enhanced tetracycline adsorption from water using sepiolite–cellulose microwave biochar composite: Performance and mechanisms	10
Enhancing biogas production from lignocellulosic biomass: Challenges, innovations, and sustainability pathways	10
Performance and emission improvements of diesel engine run on biodiesel with green synthesized copper oxide nanoparticles	10
Forecasting biogas production and CO 2 emissions from organic wastes in	10
Optimization, ignition point, and thermodynamic properties of rubber seed bio‐oil: Python and RStudio approach	10
GIS ‐based analytical hierarchy process for geolocation of areas with high solar photovoltaic potential in the region of Fez‐Meknes	10
A sustainable biomass cookstove with helical heat exchanger and multi‐point steam injection under natural draft: Design and performance evaluation	10
A novel robust maximum power extraction framework for sustainable PV system using incremental conductance based MRAC technique	10
Impacts of pine oil and hydrogen induction with hemp oil methyl ester on dual fuel reactivity controlled compression ignition combustion in diesel engine	10
Modeling the adsorption process for fluoride removal from groundwater by machine learning	10
Evaluating the challenges to Life Cycle Assessment using Best‐Worst Method and Decision‐Making Trial and Evaluation Laboratory	10
Renewable Energy Integration with Building Energy Systems: A Modeling Approach By V. S. K. V.Harish, Amit VilasSant, ArunKumar (Eds.), CRC Press/Balkema, Tylor & Francis Group. 2022. pp	9
Development of solar radiation prediction model using minimax algorithm	9
Biodiesel production through the transesterification of rapeseed oil over CaO‐MgO/SBA‐15 catalysts	9
Environmentally friendly agar‐agar biomaterial‐based triboelectric nanogenerator for sustainable electronics	9
Effects of accumulator plant species straw on the cadmium and nutrient uptake of potato	9
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Investigating organic matter sources in the lakes of the middle and lower reaches of the Yangtze River , China	9
Vermicomposting of solid textile sludge spiked with cow dung by epigeic earthworm Eisenia fetida in variable population density	9
Utilizing rice straw hydrolysate for sustainable bacterial nanocellulose production by Acetobacter hansenii : A response surface optimization study	9
Magnetic urchin‐like NiCo2O4 material derived from wastes as a peroxymonosulfate activator for the degradation of bisphenol A	9
Enhancing energy content of hydrochar produced by hydrothermal carbonization of biomass through addition of grease waste	9
Unlocking the potential of low concentration biodiesel blended with green synthesized novel carbon black nanoparticles from Ricinus communis outer shell: An experimental study under different c	9
Highly porous nanofiber of bismuth sulfide/poly‐o‐aminobenzenethiol‐bismuth tungstate composite seeded on poly‐1H pyrrole: Photocathode for green hydrogen generation without external	9
Production of high‐purity cellulosic pulps from mango endocarp residue using the green chemical process of peracetic acid	9
A computer‐aided method for optimizing solar power tower – the case of Syrian desert	9
Fabrication and modification of nanofiltration membranes for efficient dye/salt separation towards sustainable water and resource recovery: A review	8
Intercropping with Solanum sect. Solanum (Solanaceae) increases selenium uptake of ‘Summer Black’ grapevine	8

Assessment and optimization of a single flash geothermal system recovered by a trans‐critical CO2 cycle using different scenarios	8
Attitude, knowledge and perception of choice of cooking fuels: Evidence from two large communities in South‐east Nigeria	8
Biogas production potential from animal farm waste in Bangladesh: Case studies of two selected farms	8
Effect of oxides composition on the mechanical properties of non‐sintered spherical filters from waste steel slag	8
Study on hydrothermal aging characteristics of three‐way catalysts for lean‐burn gasoline engines	8
Issue Information ‐ Info for Authors	8
Influence and microscopic mechanism of heavy metal invasion on physical and mechanical characteristics of silty clay	8
Removal of methylene blue by hydrochar modified from hydrothermal carbonization technique	8
Analysis of numerous economic and financial barriers using the fuzzy DEMATEL method in the reverse supply chain to implement PV waste handling	8
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The effectiveness of RANS ‐based turbulence models predicting the PCM ‐connected air conditioning	8
Radiological health risk assessment and transfer factors of natural and artificial radionuclides for cowpea, okra, and maize grown in Antalya, Türkiye	8
Investigating the effect of various baffle geometries on solar air heater thermal behavior: A numerical approach	8
Sustainability assessment: Environmental impacts and economic performance of bio‐based and mineral‐based cutting fluids	8
A facile synthesis of bio‐inspired hierarchical microstructure TiO2: Characterization and photocatalytic activity	8
Temporal profiling of Congo red degradation products during exposure to microalgae in synthetic wastewater	8
Photocatalytic degradation of oxytetracycline using ZnO catalyst	8
Thermophysical performance enhancement of vapor‐compression chiller systems via metal oxide nanofluid integration	8
Performance analysis of proton exchange membrane fuel cells with various serpentine flow channel designs	8
Energy requirement in non‐centrifugal sugars production units and its mitigation via steam controlled concentration techniques	8
Study on material and energy metabolism and “zero‐waste” evaluation methods and applications for chemical Industrial Park	8
Evaluation of the energy and exergy of a trans‐critical CO2 cycle driven by a double flash geothermal power plant	8
Regeneration of LeTID degradation in p‐ PERC photovoltaic modules using D	7
Implications of confined Mn species on reinforcing adsorption capability of activated coke for a sweetener acesulfame removal	7
Performance, emission and multi‐objective optimization of CuO nanoparticle‐enhanced corn oil biodiesel in a CI	7
Do globalization, foreign direct investment, trade openness, and urbanization propel renewable energy transition? Empirical evidence from kernel regularized quantile regression modeling	7
Design of an innovative fuel‐efficient stove for reducing air pollution and enhancing sustainability	7
Adsorptive removal of phosphate from water using corn straw derived biochar	7
Optimized banana leaf ash concrete: Mechanical performance, durability, and sustainability assessment	7
Effect of manifold injection of 1‐hexanol on a reactivity controlled compression ignition engine fuelled with neem oil methyl ester blend	7
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Kinetic and thermodynamic analysis of tar‐rich coal pyrolysis: Comparison between model‐free and model‐fitting methods	7
Valorization of black liquor lignin into renewable absorber coatings for thermal performance enhancement of solar dryers	7
Gamma‐sterilized cow‐dung for confiscation of triphenylmethane dyes from water bodies	7
The impact of silver–zinc coated catalytic converters on compression ignition engine emissions with Mg‐doped ZnO nano‐additives in diesel–fish oil fu	7
Current trends on the advancement and limitation of biohydrogen research: An exclusive overview	7
Environmental impacts of F‐gases and trifluoroacetic acid: Potential threats to aquatic ecosystems and management strategies	7
Rice yield and carbon dioxide emissions in a paddy soil: A comparison of biochar and polystyrene microplastics	7
Fenton oxidation as a practical primary treatment for raw paper mill wastewater: A real case study	7
Investigation of thermal comfort and environmental design in historic buildings: A case study of Shubra palace	7
Gallium indium nitrate doped PbS and MoS2 with ligands based photovoltaic cell structure for enhanced efficiency incorporating transformer based module with hydro Ferr	7
Occurrence and eco‐toxicological risk assessment of primary aromatic amines in hookah wastewater	7
Cobalt‐based water oxidation electrocatalyst to assist the oxygen evolution reaction as an energy conversion system	7
Process optimization and crystallization kinetics of ammonium sulfate from wet ammonia‐based desulfurization	7
Issue Information ‐ Info for Authors	7
Uncertainty‐aware thermo‐economic and exergo‐environmental analysis of a solar–biomass ORC – sCO	7
Environmental implications of slaughterhouses and meat production industries: A comprehensive review	7
An innovative irrigation system for farming towards environmental sustainability in India	7
Improving energy efficiency in small and medium‐sized enterprises: A data‐driven framework for cost reduction and carbon dioxide emission cuts	7
Synergistic in situ epoxidation of oleic derived soybean oil using a hybrid oxygen carrier	7
Drying behavior and nutritional quality of bitter‐gourd slices dried in a solar dryer with tray and skewer arrangement	7
Decolorization of soybean oil by acid‐activated Ca‐Bentonite (EL Gnater, Central Tunisia)	7
Performance and emission analysis of single‐cylinder direct injection engine running with cottonseed‐ethyl oleate biodiesel blends	7
Testing results of a novel air cavity enabled domestic solar dryer for potato drying	6
A comprehensive review of castor oil‐derived renewable and sustainable industrial products	6
A perspective on solar railway potential for the UK	6
Advances in chromium removal using biomass‐derived activated carbon: A comprehensive review and bibliometric analysis	6
Green rebirth of copper tailings: From environmental burden to efficient utilization strategies	6
Sustainable bio‐composites from agro‐green waste: Optimize the effect of waste ceramic particles filler addition on mechanical performance	6
An experimental study on optimum temperature of B20 POBD for higher efficiency and lower emissions of a DI diesel engine in lean and ultra‐lean combustion conditions	6
Smart green copper nanoparticles for dye‐polluted water treatment	6
Investigating exhaust gas emissions of yachts: Example of Turgutreis D‐Marin	6
Vegetative substrate configuration technology for tower foundation slope of transmission line in arid area considering species suitability	6
Photocatalytic degradation of 2,4‐ D ichlorophenoxyacetic acid by zero‐valent A g‐modified zinc ox	6
Breaking the limits of continuous operation: Energy‐efficient methane production in iron–carbon MEC ‐ AD	6
Biodiesel production from waste cooking oil using (modified I ranian clinoptilolite + KOH )/biocha	6
Enhancing energy efficiency and sustainability in pear slice drying (Pyrus communis L.) through heat transfer optimization in infrared‐assisted solar greenhouse dryer	6
Financing green and climate resilient infrastructure in ASEAN countries	6
Exploration of benefits and performances of integration of semitransparent photovoltaics with buildings and infrastructure: A comprehensive review	6
Modeling textile dye removal by ultrasound‐assisted fenton process using machine learning approaches	6
Photocatalytic degradation of p‐nitrophenol in wastewater by heterogeneous cobalt supported ZnO nanoparticles: Modeling and optimization using response surface methodology	6
Issue Information ‐ Cover and Table of Contents	6
Performance evaluation and development of FE modeling for passive greenhouse solar dryer for potato chips drying	6
Experimental investigations on the performance of solar cooker using nichrome heating coil—Photovoltaic with microcontroller PIC 16F877A	6
Co‐optimization of CO 2 flooding and storage technology in low permeabil	6
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Assessment of emission and environmental parameters of different commercial high by‐pass turbofan engines throughout landing and take‐off cycle	6
Economic and environmental evaluation of refuse‐derived fuel (RDF) gasification plant with carbon capture and storage for power, heating and hydrogen production	6
Biohydrogen purification by CO 2 capture with deep eutectic solvents	6
Performance and sustainability assessment of green HFO ‐based refrigerant mixtures for residential air conditioning	6
New insights into the dose‐dependent inhibition of sludge fermentation by the antidepressant fluoxetine	6
Drivers of sustainable economic growth in New Zealand: Insights from energy, green and blue economy	6
Promising morphology of Poly‐2‐Mercaptoaniline/reduced graphene oxide nanosheets photocathode for green hydrogen generation from natural and artificial Red Sea water	6
Cultivation of Chlorococcum sp. microalgae for biomass and lipid production using palm oil mill final discharge as medium	6
Optimizing energy, quality, and emissions in button mushroom ( Agaricus bisporus ) drying using in	6
Life cycle assessment of a microfluidic electrolytic cell using Bi – Sn nanoparticle catalyst and	6
Linking clean energy consumption to environmental sustainability in Africa: Puzzling evidence from new artificial intelligence methods	6
Transient thermal modeling and performance analysis of photovoltaic panels	6
Effect of nano carbon material and activated carbon pellet fins on decrease in temperature and improvement of solar panel efficiency: An experimental and environmental study	6
Solar photovoltaic water pump performance optimization by using response surface methodology	6
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Energy and economic analyses of biodiesel production from edible sunflower oil and waste cooking oil	6
Enhancing dielectric performance and sustainability: TiO ₂‐infused Eruca sativa oil as a high‐efficien	6
OPA ‐ IF ‐ SVNF ‐ MARCOS	6
Simultaneous theoretical hydrogen generation and COD removal from refinery wastewater using rutile Ti	6