OOIR: Observatory of International Research

Papers

(The H4-Index of Environmental Progress & Sustainable Energy is 24. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-06-01 to 2026-06-01.)

Article	Citations
Issue Information ‐ Info for Authors	123
Bioclogging effects on mass transport using volume averaging method in bioretention cell treating wastewater: Theories	98
Resources for renewable natural gas: A Hawaii case study	62
Effect of substituting water source on the methane production from lignocellulosic biowaste during anaerobic digestion	54
Evaluation and optimization of engine performance and exhaust emissions of a diesel engine fueled with diestrol blends	43
Enhanced prediction of Cs removal by CST from Hanford tank waste with K accountability	40
A comprehensive review of coffee waste based adsorbents for the sequestration of different water contaminants	40
A bibliometric review on green hydrogen as an alternative for combined generation systems	40
Pedestrians' perceptions of different heat mitigation strategies for an urban river valley in Iran: Coupling a questionnaire survey with microclimate modeling	34
Design and fast uptake of fluoride using hybrid biopolymers encapsulated magnetic hydroxyapatite beads	32
Experimental investigation of pyramid solar still performance enhanced by natural and volcanic pebbles‐based thermal storage	31
Effect of calcium hydroxide on the characteristics of volatile organic compounds emission during sewage sludge incineration	31
Photoactivation of nano MgO anchored g‐C₃N₄ enhances biodiesel production in Chlorella sorokiniana: A sustainable approach	30
A critical review on carbon materials from oil sludges: Activation, application and future prospects	30
Production and characterization of composite activated carbon from potato peel waste for cyanide removal from aqueous solution	29
Efficient photocatalytic degradation of emerging pollutants by green synthesized Prussian blue analogue nanocomposite	29
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,	29
Response surface methodology for optimizing the pulsed spray deposition of Co‐doped Bi₂O₃ photocatalytic thin films	29
Experimental research on transforming different functional thresholds to improve double slope solar still productivity	28
Flame and flow structure of premixed hydrogen/air combustion under different inlet flow rates	28
Sustainable thermal energy storage in a cylindrical solar pond with calcium chloride stratification	27
The effect of surfactant on biosolubilization of weathered coal	26
Comprehensive environmental and economic analysis of active‐mode greenhouse solar dryers for green peas processing	24
Preparation of carbon dioxide‐adsorbing materials from fly ash‐modified steel slag and their performance optimization	24
Navigating the complexities of advanced recycling: Processes, feedstock, and public health connections in the context of the global plastic pollution crisis	24