Author

Haruna Mavakumba Kefas

Observed names: H Kefas, Haruna M. Kefas, KEFAS, Haruna Mavakumba, Kefas Mavakumba Haruna, Kefas, Haruna Mavakumba

Institution: Modibbo Adama University of Technology

Observed institutions: Universiti Putra Malaysia, Modibbo Adama University of Technology

ORCID: 0000-0002-7505-2425

Observed ORCID: 0000-0002-7505-2425

OpenAlex ID: A5105098815

Synthesis and Characterization of Slow-Release Fertilizer Hydrogel Based on Hydroxy Propyl Methyl Cellulose, Polyvinyl Alcohol, Glycerol and Blended Paper

2021 · Semiu A. Kareem, Idayatu Dere, et al. · Gels · 66

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Modified sulfonation method for converting carbonized glucose into solid acid catalyst for the esterification of palm fatty acid distillate

2018 · Haruna Mavakumba Kefas, Robiah Yunus, et al. · Fuel · 64

Enhanced biodiesel synthesis from palm fatty acid distillate and modified sulfonated glucose catalyst via an oscillation flow reactor system

2019 · Haruna Mavakumba Kefas, Robiah Yunus, et al. · Journal of environmental chemical engineering · 44

Determination of Optimal Catalyst Concentration for Maximum Biodiesel Yield from Tigernut (Cyperus Esculentus) Oil

2007 · Ugheoke Benjamin Iyenagbe, David Onoja Patrick, et al. · 29

The Impact of Pesticide Application on Heavy Metal (Cd, Pb and Cu) Levels in Spinach

2007 · Timothy Musa Chiroma, B. I. Abdulkarim, et al. · DOAJ (DOAJ: Directory of Open Access Journals) · 22

Characterization of Mayo-Belwa Clay

2007 · Haruna Mavakumba Kefas, David Onoja Patrick, et al. · 14

Preparation of slow-release fertilizer derived from rice husk silica, hydroxypropyl methylcellulose, polyvinyl alcohol and paper composite coated urea

2025 · Idayatu Dere, Daniel T. Gungula, et al. · Heliyon · 11

Optimization of Biodiesel Production from Crude Cotton Seed Oil Using Central Composite Design

2016 · Mustapha Mujeli, Haruna Mavakumba Kefas, et al. · American Journal of Chemical and Biochemical Engineering · 8

Effect of Sodium Hydroxide Thickener on Grease Production

2016 · K Ebisike, B Daniel, et al. · Chemical Science International Journal · 6

Ensiling water hyacinth for enhanced biomethane production: effect of co‐ensiling with maize straw and eggshell powder as additive

2022 · Jerome Undiandeye, Silas Kiman, et al. · Journal of Chemical Technology & Biotechnology · 5

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Removal of Iron and Copper Ions from Water Using Cashew Nut Shell Adsorbent: Langmuir, Freundlich, Redlich-Peterson and Harkin-Jura Isotherms

2025 · Haruna Mavakumba Kefas, Yusufu Luka, et al. · Indochina Applied Science · 3

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Sustainable biodiesel synthesis from oleic acid: kinetic study with carbonized bambara nutshell catalyst

2024 · Haruna Mavakumba Kefas, Abdulhalim Musa Abubakar, et al. · Latin American Journal of Energy Research · 2

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Revolutionizing Biodiesel Synthesis: Kinetic and Thermodynamic Insights with Carbonized Doum-Shell Catalyst

2024 · Abdulhalim Musa Abubakar, Haruna Mavakumba Kefas, et al. · Trends in Ecological and Indoor Environmental Engineering · 2

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Modified Sulfonated Glucose-Catalyzed Esterification of Palm Fatty Acid Distillate: Kinetics and Fuel Properties

2020 · Haruna Mavakumba Kefas, Robiah Yunus, et al. · American Journal of Chemical Engineering · 2

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Optimization and Kinetic Study of the Hydrothermal Pretreatment of Cocoa Pod Husks and Unripe Plantain Peels

2022 · Jerome Undiandeye, Joseph Nwabanne, et al. · JOURNAL OF THE NIGERIAN SOCIETY OF CHEMICAL ENGINEERS · 1

Kinetics of Bioremediation of Shinko Drainage Wastewater in Jimeta-Yola Using Bacillus Subtilis

2014 · Yusufu Luka, Haruna Mavakumba Kefas, et al. · 1

Constraint Based Diagnosis and Recovery Assessment for Interconnected Chemical Processes

2026 · Marzieh Lamtar Gholipoor, Haruna Mavakumba Kefas, et al. · Systemic Analytics

Utilization of Doum Shell Catalyst in Biodiesel Production from Palmitic Acid: Development of Statistical Optimization Approach

2024 · Haruna Mavakumba Kefas, Jerome Undiandeye, et al. · Knowledge-Based Engineering and Sciences

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Synthesis and Characterization of Slow-Release Fertilizer Hydrogels Based on Hydroxy Propyl Methyl Cellulose, Polyvinyl Alcohol, Glycerol and Blended Paper as Second Layer

2021 · Fartisincha Peingurta Andrew, Daniel T Gungula, et al. · Preprints.org

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Quality Assessment of Hand-Dug Wells in Numan Environs

2014 · Yakubu Mandafiya John, Haruna Mavakumba Kefas, et al.

Kinetics of Fermentation by Enzymes: A Mathematical Approach

2011 · Semiu Adebayo Kareem, Haruna Mavakumba Kefas, et al. · AU Journal of Technology

Works count: 23

Citation count: 280

H-index: 8

I10-index: 7