Prof. BABA ABDULLAHI ALAFARA
@unilorin.edu.ng
Professor, Faculty of Physical Sciences
University of Ilorin
RESEARCH, TEACHING, or OTHER INTERESTS
Analytical Chemistry, Chemistry
84
Scopus Publications
2146
Scholar Citations
24
Scholar h-index
54
Scholar i10-index
Scopus Publications
- Preparation of High-Grade Sodium Tungstate from a Wolframite Ore for Catalytic Applications by Hydrometallurgical Process
Alafara Abdullahi Baba, Sadisu Girigisu, Abdullah S. Ibrahim, Fausat T. Akanji, and Folahan A. Adekola
Springer Nature Switzerland - Optimizing methanesulfonic acid leaching for efficient extraction of magnesia from a Nigerian antigorite-rich dolomite ore
Ayo F. Balogun and Alafara A. Baba
Springer Science and Business Media LLC - Dissolution Kinetics of Copper from Low-Grade Goldfieldite ore by Hydrometallurgical Routes
Kehinde I. Omoniyi, Shemang Y. Chindo, Edith B. Agbaji, Alafara A. Baba, and Mustapha A. Raji
Springer Science and Business Media LLC - Preparation and characterization of potassium chloride from the roast-leaching treatment of a Nigerian quartz-rich muscovite ore
Ayo F. Balogun, Alafara A. Baba, Taiwo O. Ogundepo, and Joel E. Akor
Springer Science and Business Media LLC - Dissolution kinetics and thermodynamics of uranium from a boltwoodite ore for nuclear fuel cycle application
Mustapha A. Raji, Alafara A. Baba, and Folahan A. Adekola
Springer Science and Business Media LLC - Optimization of the Leaching Kinetics for Uranium Recovery from a Boltwoodite Ore as Emerging Solution to Nigerian Power Sector
Mustapha A. Raji, Alafara A. Baba, Abhilash, Ajeet Gangwar, and Jude O. Majasan
Springer Science and Business Media LLC - Clean preparation of chromium oxide (Cr<inf>2</inf>O<inf>3</inf>) from low-grade indigenous chromite ore for use as paint pigment
Kuranga Ibrahim Ayinla, Alafara Abdullahi Baba, Asim Abdalla Mohammed, Arpeeta Hota, Smrutirekha Sahoo, Jiban Krushna Das, and Bankim Chandra Tripathy
Informa UK Limited - Enrichment of a Nigerian plagioclase-rich feldspar ore by methanesulfonic acid solution for improved industrial application: kinetic and statistical analysis
Ayo F. Balogun, Alafara A. Baba, Daud T. Olaoluwa, Abdulbaki O. Hammed, and Joel E. Akor
Informa UK Limited - Low-Energy Processing of a Local Boltwoodite Ore as Intermediate in Nuclear Fuel Cell
Alafara A. Baba, Mustapha A. Raji, Kehinde I. Omoniyi, Shemang Y. Chindo, Aduagba G. Kareem, Abhilash, Pratima Meshram, Amudat Lawal, and Folahan A. Adekola
Springer Nature Switzerland - Purification of an Indigenous Molybdenite for Enhanced Steel Production
Alafara A. Baba, Mamata Mohapatra, Christianah O. Adeyemi, Abdul G. F. Alabi, Rasheed A. Agava, Bernard O. Ozigi, and Jimoh M. Abdul
Springer Nature Switzerland - Dissolution kinetics studies of kaolin ore as raw material for mesoporous silica by acid leaching
Abdullah S. Ibrahim and Alafara A. Baba
Informa UK Limited - Preparation of industrial ammonium diuranate from a boltwoodite ore as a mediator for nuclear fuel and catalytic utilizations
Alafara A. Baba and Mustapha A. Raji
Elsevier BV - Uranium extraction from sulphuric acid leach liquor by Cyanex®272 as intermediate in nuclear fuel cell
Mustapha A. Raji, Alafara A. Baba, and Abhilash
Springer Science and Business Media LLC - Template-Free Preparation and Characterization of Mesoporous Silica from Kaolinite ore
Abdullah S. Ibrahim and Alafara A. Baba
Springer Science and Business Media LLC - Preparation, characterization and kinetics studies of mesoporous silica from alkali dissolution of kaolinite
Abdullah S. Ibrahim and Alafara A. Baba
Elsevier BV - Investigation on the Quality of Prolonged Storage of Packaged Water Commonly Produced in North Central, Nigeria
Fatai OKEOLA, Taofeeqat ABU, Aminat MOHAMMED, Muyiwa OROSUN, Abdullahi BABA, and Mariam Bolanle ADEBOJE
The Turkish Chemical Society
This study investigated the effects of prolonged storage conditions on the physicochemical parameter, toxic metals, microbial loads, and health risks assessment of randomly selected three brands of sachet and bottled water in North Central, Nigeria. One hundred eighty samples of water brands (sachet and bottled) were collected from 10 different factories and were grouped into three. They were analyzed immediately (initial), being exposed to mild sunlight (stored with a container) and exposed to intense sunlight (stored without a container) conditions for six weeks. The results of the physicochemical parameters (sachet and bottle) were within the limits set by the World Health Organization (WHO) and the Standard Organization of Nigeria (SON). While the results of heavy metals analysis for both sachet and bottled water recorded 0.15 - 0.51 mg/L (0.10 mg/L , 0.05 mg/L), 0.13 - 0.38 mg/L (0.015 mg/L, 0.01 mg/L) and 0.55 - 1.11 mg/L (0.03 mg/L, 0.3 mg/L) for Chromium (Cr), Lead (Pb) and Iron (Fe) respectively, as compared to the permissible limits (values in the bracket for each heavy metals) set by WHO and SON. The microbial analysis results ranged between 6.58 - 124.51 Cfu/100 mL, 0.52 - 37.56 Cfu/100 mL, 0.07 - 5.00 Cfu/100 mL, 0 - 2.07 Cfu/100 mL for Total Bacteria Count (TBC), Total Coliform Count (TCC), Faecal Coliform Count (FCC) and Total Fungal Count (TFC) respectively, which showed no effective quality control system. Incremental lifetime cancer risk (ILCR) assessment revealed a carcinogenic health risk to the populace drinking this water. The study concludes that water stored under sunlight for a long period is not good for human consumption and therefore adequate monitoring by the appropriate agencies is emphasized. - Leaching of Copper from a Nigerian Chalcopyrite-Rich Siderite Ore by Ammonia-Ammonium Sulphate Solutions
Shemang Y. Chindo, Kehinde I. Omoniyi, Edith B. Agbaji, Yakubu A. Dallatu, and Alafara A. Baba
Springer Science and Business Media LLC - Development of hydrometallurgical purification process for Nigerian gypsum ore in hydrochloric acid. Part II: Recovery of pure gypsum from leached liquor
Adebayo Isaac Olosho, Alafara Abdullahi Baba, Divine Uwaoma Okezie, Folahan Amoo Adekola, Kalenebari Kerein Kpabep, Temitayo Samson Ogedengbe, Adekunle Akanni Adeleke, Suleiman Suleiman Abba, and Ayuba Salihu
IEEE
As the world grapples with the challenges of resource scarcity and sustainability, the need to develop indigenous raw materials has gained paramount importance. To achieve self-sufficiency and reduce dependence on foreign sources, harnessing hydrometallurgical processes to extract valuable elements from ores presents a promising solution. Raw gypsum from Postikum, Nigeria, was leached in hydrochloric acid to obtain a pure calcium sulphate dihydrate. The dissolution kinetics have been reported elsewhere. This present study focused on optimizing the recovery of pure gypsum by varying acid concentration, temperature, and solid-liquid ratio. Additionally, the recyclability of regenerated hydrochloric acid was tested. The characterization of the raw gypsum ore (RWG), leached residue (LR), and recovered pure gypsum (RCG) was done using SEM-EDS, XRF, and XRD, respectively. The recovered gypsum was characterised by a brilliant white colour in contrast to the initial brown colour of the ore. XRF results show that RWG contains 50.48% SO3 while RCG contains 57.72 %. XRD results revealed that RWG contains gypsum, magnesite, mordenite, witherite, and calcite, LR contains mordenite, witherite and quartz while RCG consists of gypsum crystal phase only with no impurities. Remarkably, 85% RCG was successfully recovered at the fourth recycle stage of HCl lixiviant. These findings demonstrate that hydrometallurgical treatment of gypsum ore with hydrochloric acid can produce very pure gypsum. - Treatment of a Nigerian covellite ore. Part II: extraction and purification of copper by tri-butyl-phosphate and enhanced β-diketones in kerosene
Ayo F. Balogun, Alafara A. Baba, and Daud T. Olaoluwa
Informa UK Limited - Beneficiation of a Nigerian lepidolite ore by sulfuric acid leaching
Daud T. Olaoluwa, Alafara A. Baba, and Aboyeji L. Oyewole
Informa UK Limited - Purification of an Indigenous Barite Mineral for Sustainability of Operation in the Nigerian Oil and Gas Industries
Alafara A. Baba, Fausat T. Akanji, Rasheed A. Agava, Abdul Ganiyu F. Alabi, Abdullah S. Ibrahim, Kuranga I. Ayinla, Mustapha A. Raji, Seyi E. Adeboye, and Mohammed S. Haruna
Springer Nature Switzerland - High-Grade Li<inf>2</inf>SO<inf>4</inf> from a Local Montebrasite Ore as Industrial Raw Material for Managing Bipolar Disorder
Alafara A. Baba, Daud T. Olaoluwa, Ayo F. Balogun, and Oluwagbemiga A. Adebola
Springer Nature Switzerland - Integrated Approach for Extraction of Molybdenum and Silica from an Unexploited Nigerian Molybdenite Rich Ore
Adeyemi Christianah, Santosh Deb Barma, Mamata Mohapatra, Alafara A. Baba, and Suddhasatwa Basu
Springer Nature Singapore - Hydrometallurgical preparation of high-grade industrial manganese compound from a low-grade spessartine ore by Cyanex®272 extractant
Aishat Y. Abdulkareem, Alafara A. Baba, Mustapha A. Raji, Kuranga I. Ayinla, Yusuf L. Shuaib-Babaita, and Olawale A. Salaudeen
Informa UK Limited
ABSTRACT This study highlights a hydrometallurgical method for the purification, extraction, and beneficiation of a multi-elemental leach liquor obtained via reductive leaching of spessartine ore, for the production of high-grade manganese compound. During these treatments, the effect of Cyanex®272 concentrations, pH, aqueous: organic (A/O) was quantified. At optimal conditions (Temperature = 27 ± 2°C, 0.2 mol/L Cyanex®272, pH = 4.5, A/O = 1:1), manganese extraction efficiency was >90%. The stripping of the loaded organic phase by 0.1 mol/L sulphuric acids yielded 95.7% in a single stripping stage. The resulting aqueous solution was appreciably beneficiated to produce manganese sulphate monohydrate (MnSO4.H2O: 49–315-9500, melting point = 702.8°C) via precipitation and crystallisation methods. Finally, a flow sheet summarising the analytical treatment steps was provided. - ASSESSMENT OF A NIGERIAN CHALCOPYRITE ORE DISSOLUTION IN SULFURIC ACID MEDIUM
Kuranga I. Ayinla, Alafara A. Baba, Fausat T. Akanji, Amos I. Ambo, and Folahan A. Adekola
African Journals Online (AJOL)
ABSTRACT. This paper presents a study of dissolution kinetics of a Nigerian chalcopyrite ore in sulfuric acid lixiviant. The effects of acid concentration, temperature and particle diameter on the dissolution rates of chalcopyrite ore have been examined. The dissolution rates are significantly influenced by increase in temperature, hydrogen ion concentration [H+], and decrease in particle diameter. The experimental data for the dissolution rate have been analyzed with the shrinking core model which shows the rate controlling step for the dissolution of chalcopyrite ore occurs via surface chemical solution. With 4 M H2SO4 solution, about 91.6% of 10 g/L chalcopyrite ore at 80 oC was dissolved within 120 min using -90+75 µm particle diameter. The reaction order with respect to hydrogen ion concentration was found to be 0.57 with correlation coefficient 0.968. The calculated activation energy, (Ea) value of 44.9 kJ/mol for the dissolution process was established. However, the SEM morphology of the residues from leaching process showed that about 8.4% of the initial solid material contained admixtures of Fukuchilite (Cu0.42Fe0.58S2), and elemental sulphur (So) and are formed around the shrinking core of the unreacted material.
 
 KEY WORDS: Chalcopyrite, Sulfuric acid, Dissolution kinetics
 
 Bull. Chem. Soc. Ethiop. 2022, 36(1), 187-196. 
 DOI: https://dx.doi.org/10.4314/bcse.v36i1.15
RECENT SCHOLAR PUBLICATIONS
- Development of Optimal Extraction Conditions of Indigenous Lepidolite Ore as Raw Material for Lithium-ion Batteries
AA Baba, DT Olaoluwa, AY Abdulkareem, JO Majasan, AS Aremu, ...
TMS Annual Meeting & Exhibition, 1179-1187 2025 - Eco-Feasible Energy Approach for Industrial Uranium Compound Preparation Using Uranyl Pregnant Leach Solution (UPLS)
AA Baba, MA Raji, CO Adeyemi, KI Ayinla, JO Majasan, RO Agava
TMS Annual Meeting & Exhibition, 221-226 2025 - Preparation of High-Grade Sodium Tungstate from a Wolframite Ore for Catalytic Applications by Hydrometallurgical Process
AA Baba, S Girigisu, AS Ibrahim, FT Akanji, FA Adekola
TMS Annual Meeting & Exhibition, 67-76 2025 - Clean preparation of chromium oxide (Cr2O3) from low-grade indigenous chromite ore for use as paint pigment
KI Ayinla, AA Baba, AA Mohammed, A Hota, S Sahoo, JK Das, ...
Geosystem Engineering, 1-10 2024 - Optimizing methanesulfonic acid leaching for efficient extraction of magnesia from a Nigerian antigorite-rich dolomite ore
AF Balogun, AA Baba
Reaction Kinetics, Mechanisms and Catalysis 137 (6), 3143-3155 2024 - Estimation of Vitamin C (ascorbic acid) Concentration in selected fruit samples by volumetric and UV-Spectrophotometry methods
IK Ayinla, ES Adeboye, AA Baba, OE Abiodun, A Hota, S Sahoo, ...
Ilorin Journal of Science 11 (3), 67-71 2024 - Dissolution Kinetics of Copper from Low-Grade Goldfieldite ore by Hydrometallurgical Routes
KI Omoniyi, SY Chindo, EB Agbaji, AA Baba, MA Raji
Transactions of the Indian Institute of Metals 77 (11), 3331-3340 2024 - Preparation and characterization of potassium chloride from the roast-leaching treatment of a Nigerian quartz-rich muscovite ore
AF Balogun, AA Baba, TO Ogundepo, JE Akor
Reaction Kinetics, Mechanisms and Catalysis 137 (5), 2683-2699 2024 - Enrichment of a Nigerian plagioclase-rich feldspar ore by methanesulfonic acid solution for improved industrial application: kinetic and statistical analysis
AF Balogun, AA Baba, DT Olaoluwa, AO Hammed, JE Akor
Indian Chemical Engineer, 1-15 2024 - Development and Assessment of Different Hydrometallurgical Processes for Sustainable Recovery of Rare Earths from Spent NdFeB Magnets
K Forsberg, T Ouchi, GH Azimi, S Alam, NR Neelameggham, AA Baba, ...
2024 - Recovery of copper from ammonia–ammonium chloride leach liquor using sterically hindered beta-diketone
AF Balogun, AA Baba, DT Olaoluwa
Mineral Processing and Extractive Metallurgy 133 (3), 109-118 2024 - Production of Industrial-Grade Monoclinic Lead Chromate (PbCrO4) from Indigenous Chromite ore for Paint Pigment Utilization
KI Ayinla, AA Baba, BC Tripathy, RK Dwari
Journal of Nepal Chemical Society 44 (2), 101-109 2024 - Dissolution kinetics and thermodynamics of uranium from a boltwoodite ore for nuclear fuel cycle application
MA Raji, AA Baba, FA Adekola
Journal of Radioanalytical and Nuclear Chemistry 333 (8), 4387-4395 2024 - Optimization of the leaching kinetics for uranium recovery from a boltwoodite ore as emerging solution to nigerian power sector
MA Raji, AA Baba, Abhilash, A Gangwar, JO Majasan
Journal of Sustainable Metallurgy 10 (2), 851-863 2024 - ASSESSMENT OF AIR QUALITY OF SERVICE STATIONS IN BUILT UP AREA: A CASE STUDY OF LAGOS METROPOLIS
AS Shote, SA Aasa, AI Musa
Nigerian Journal of Engineering 31 (1), 21-21 2024 - Purification of an Indigenous Molybdenite for Enhanced Steel Production
AA Baba, M Mohapatra, CO Adeyemi, AGF Alabi, RA Agava, BO Ozigi, ...
TMS Annual Meeting & Exhibition, 315-320 2024 - Low-energy processing of a local boltwoodite ore as intermediate in nuclear fuel cell
AA Baba, MA Raji, KI Omoniyi, SY Chindo, AG Kareem, Abhilash, ...
TMS Annual Meeting & Exhibition, 67-72 2024 - Dissolution kinetics studies of kaolin ore as raw material for mesoporous silica by acid leaching
AS Ibrahim, AA Baba
Canadian Metallurgical Quarterly 63 (1), 203-212 2024 - Carbon Dioxide Management and Other Technologies
C Iloeje, S Alam, DP Guillen, F Tesfaye, L Zhang, SAC Hockaday, ...
Energy Technology 2024 (9) 2024 - Rare Metal Technology 2025
K Forsberg
Springer Nature 2024
MOST CITED SCHOLAR PUBLICATIONS
- Development of a combined pyro-and hydro-metallurgical route to treat spent zinc–carbon batteries
AA Baba, AF Adekola, RB Bale
Journal of Hazardous Materials 171 (1-3), 838-844 2009
Citations: 126 - A review on novel techniques for chalcopyrite ore processing
AA Baba, KI Ayinla, FA Adekola, MK Ghosh, OS Ayanda, RB Bale, ...
Int. J. Min. Eng. Miner. Process 1 (1), 1-16 2012
Citations: 114 - Hydrometallurgical processing of a Nigerian sphalerite in hydrochloric acid: Characterization and dissolution kinetics
AA Baba, FA Adekola
Hydrometallurgy 101 (1-2), 69-75 2010
Citations: 87 - Characterization and kinetic study on ammonia leaching of complex copper ore
AA Baba, MK Ghosh, SR Pradhan, DS Rao, A Baral, FA Adekola
Transactions of Nonferrous Metals Society of China 24 (5), 1587-1595 2014
Citations: 81 - Hydrometallurgical processing of manganese ores: a review
AA Baba, L Ibrahim, FA Adekola, RB Bale, MK Ghosh, AR Sheik, ...
Journal of minerals and materials characterization and engineering 2 (3 2014
Citations: 78 - Talactoferrin alfa versus placebo in patients with refractory advanced non-small-cell lung cancer (FORTIS-M trial)
S Ramalingam, J Crawford, A Chang, C Manegold, R Perez-Soler, ...
Annals of oncology 24 (11), 2875-2880 2013
Citations: 68 - Quantitative leaching of a Nigerian iron ore in hydrochloric acid
AA Baba, FA Adekola, AO Folashade
Journal of Applied Sciences and Environmental Management 9 (3), 15-20 2005
Citations: 66 - A study of dissolution kinetics of a Nigerian galena ore in hydrochloric acid
AA Baba, FA Adekola
Journal of Saudi Chemical Society 16 (4), 377-386 2012
Citations: 64 - Toxicity and speciation analysis of Organotin compounds
OS Ayanda, AA Baba, OG Oladele
Chemical Speciation and Bioavailability 24 (4), 216-226 2012
Citations: 63 - Application of Cyanex extractant in Cobalt/Nickel separation process by solvent extraction
OS Ayanda, FA Adekola, AA Baba, BJ Ximba, OS Fatoki
2013
Citations: 61 - Bioleaching of Zn (II) and Pb (II) from Nigerian sphalerite and galena ores by mixed culture of acidophilic bacteria
AA BABA, FA ADEKOLA, RF ATATA, RN AHMED, S PANDA
Transactions of Nonferrous Metals Society of China 21 (11), 2535-2541 2011
Citations: 58 - Beneficiation of a Nigerian sphalerite mineral: solvent extraction of zinc by Cyanex 272 in hydrochloric acid
AA Baba, FA Adekola
Hydrometallurgy 109 (3-4), 187-193 2011
Citations: 55 - Comparative analysis of the dissolution kinetics of galena in binary solutions of HCl/FeCl3 and HCl/H2O2
AA Baba, FA Adekola
International Journal of Minerals, Metallurgy, and Materials 18, 9-17 2011
Citations: 47 - Purification of a Nigerian talc ore by acid leaching
AA Baba, AS Ibrahim, RB Bale, FA Adekola, AGF Alabi
Applied Clay Science 114, 476-483 2015
Citations: 39 - Dissolution kinetics and leaching of rutile ore in hydrochloric acid
AA Baba, FA Adekola, EE Toye, RB Bale
Journal of Minerals and Materials Characterization and Engineering 8 (10), 787 2009
Citations: 39 - Comparative study of the kinetics of dissolution of laterite in some acidic media
OS Ayanda, FA Adekola, AA Baba, OS Fatoki, BJ Ximba
Journal of Minerals & Materials Characterization & Engineering 2011
Citations: 37 - Solvent extraction of Pb (II) and Zn (II) from a Nigerian galena ore leach liquor by tributylphosphate and bis (2, 4, 4-trimethylpentyl) phosphinic acid
AA Baba, FA Adekola
Journal of King Saud University-Science 25 (4), 297-305 2013
Citations: 35 - Mineralogical characterization and leaching behavior of Nigerian ilmenite ore
AA Baba, S Swaroopa, MK Ghosh, FA Adekola
Transactions of Nonferrous Metals Society of China 23 (9), 2743-2750 2013
Citations: 33 - Investigation of dissolution kinetics of a Nigerian tantalite ore in nitric acid
AA Baba, FA Adekola, OI Dele-Ige, RB Bale
Journal of Minerals and Materials Characterization and Engineering 7 (1), 83-95 2007
Citations: 33 - Study of metals dissolution from a brand of mobile phone waste
A Baba, F Adekola, D Ayodele
Metalurgija–J Metallurgy 16 (4), 269-277 2010
Citations: 27