Biomonitoring and Remediation

Biomonitoring and Remediation

The biomonitoring and remediation research group focuses on applying our knowledge of applied microbiology and biotechnology to develop innovative techniques to mitigate and address environmental challenges.

We concentrate on environmental monitoring and development of bioremediation protocols that utilizes microorganisms and their products to degrade organic pollutants such as hydrocarbons and hydrocarbon based compounds, pesticides and antibiotics. As well as development of potent soil amendment that can be used to improve fertility of hydrocarbon contaminated farmlands.

Currently we are working on developing a bio fertilizers enhanced with potent degraders for application in hydrocarbon contaminated agricultural soils.

    1. Treatment of crude oil-produced wastewater using the oxygen mass transfer method fortified with biosurfactant-producing bacteria. Funded by the TETFund Institution-Based Research (IBR) Grant, Ref: TETF/DR&D/CE/UNI/UYO/IBR/2024/Vol.1 (₦4,860,000). (2024)
    2. Microbiological Evaluation of the Effect of some industrial effluents on Tropical Hydric Soils Using Sanger Sequencing and Metagenomics Techniques. (2019)
    3. Microbiological Profile and Heavy Metal Accumulation Potentials of Tilapia (Oreochromis niloticus) and Catfish (Clarias guriepinus) from the Wild and Crude oil Contaminated Aquaria. (2017)
    4. Effects of bacterized organic amendment on microbial communities, soil enzymes and other indices of soil fertility of a crude oil impacted garden soil (2017-)
    5. Microbiological Studies: Environmental Audit of West Atlantic Shipyard Operations, OGFZ, Onne (2017)
    6. Microbiological Studies: EIA of Abuja Power Feeding Scheme Transmission Project, PGM Nig. Limited (2016)
    7. Enhanced biodegradation of PAHs using biosurfactant producing bacteria from a humic freshwater ecosystem of Eniong River, Itu-Nigeria (2016)
    8. Modeling crude oil Degradation by Pseudomonas Eshc2 isolated from sediment of Eniong River Itu, Nigeria (2015)
    9. Bacterization of boiostiumulants and its diauxic effects on hydrocarbon degradation and remediation of crude oil contaminated garden soil (2016)
    10. Micrococcus luteus: A potent biosurfactant source of enhanced remediation of crude oil polluted soils (2015)
    11. Microbial Characterization of Sewage Sludge and effects of Composting and Drying on the Survival of Pathogens in Biosolid (2015)
  • Prof. Joseph P. Essien Team leader

    Prof. Joseph P. Essien

    Professor of Environmental Microbiology and Biotechnology

    Contact: josephessien@uniuyo.edu.ng +2348023328586

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    Prof. Alfred Y. Itah

    Prof. Alfred Y. Itah

    Professor of Environmental and Public Health Microbiology

    Contact: allyoung2001@yahoo.com alfreditah@gmail.com +2348023367539

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    Dr. Godwin E. Udofia

    Dr. Godwin E. Udofia

    Senior Lecturer, Environmental Microbiology

    Contact: godwinudofia553@gmail.com +2348027395511

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    Opeyemi K. Fatunla

    Opeyemi K. Fatunla

    Assistant Lecturer, Environmental/Industrial Microbiology

    Contact: opeyemifatunla@uniuyo.edu.ng +2348064049745

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    Nsikak A. Abraham

    Nsikak A. Abraham

    Environmental Microbiologist/Certified Carbon Auditor

    Contact: nsikabram@uniuyo.edu.ng +2347030348468

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    Jojean Imoh-Ita

    Jojean Imoh-Ita

    M.Sc. Student, Environmental Microbiology

    Contact: jojean_nse@yahoo.com +2348033909605

    Edinam-abasi Udofia

    Edinam-abasi Udofia

    M.Sc. Student, Environmental Microbiology

    Contact: uchristianaime@yahoo.com +2348068478541

  • 2026

    1. Offiong, N. O., Fatunla, O. K., Okop, I. J., Udo, M. D., Essien, C. P., Robert, G. A., Donatus, R. B., Egun, I. L. (2026). Co-solvent soil washing of PAHs and trace metals in contaminated ultisol using Portulaca oleracea aqueous extract and isopropyl alcohol. Chemistry and Ecology, 42(3), 290-306. DOI: https://doi.org/10.1080/02757540.2025.2609825
    2. Adegoke, A. A., Fatunla, O. K., Ofon, U. A., Shaibu, S. E., Bassey, N. S., Offiong, N. O. (2026). Nanovectors for gene therapy and immunotherapy in green microbial nanotechnology for biomedical applications. Green Microbial Nanotechnology for Biomedical Applications, 81-114. DOI: https://doi.org/10.1016/b978-0-443-36765-6.00002-8

    2025

    1. Udoukpo, F. C., Nkanang, A. J., Fatunla, O. K., Abraham, N. A., Essien, J. P. (2025). Bonny Light Crude Oil Degradation by Biomass Extract of Aspergillus niger Strain Y25 Isolated from Black Mangrove Pneumatophores in Nigeria. World Journal of Applied Science and Technology, 17(1): 48-55.
    2. Ikpe, D. I., Abraham, N. A., Essien, J. P., Fatunla, O. K., Benson, N. (2025). Diversity and virulence of culturable bacterial species associated with municipal solid waste impacted freshwater and soil in Uyo, Akwa Ibom State. World Journal of Applied Science & Technology, 17(1), 26-31. DOI: https://doi.org/10.4314/wojast.v17i1.26
    3. Ofon, U. A., Ndubuisi-Nnaji, U. U., Udofia, G. E., Adegoke, A. A., Orji, E. E., Ekaette, M. I., Ukot, C. A., Offiong, N. O., Fapojuwo, D. P., Shaibu, S. E. (2025). Optimization of biogas production with rice straw-derived biochar: Characterization, hormetic effects, and kinetics modelling. Cleaner Waste Systems, 11, 100288. DOI: https://doi.org/10.1016/j.clwas.2025.100288
    4. Adegoke, A. A., Madu, C. E., Reddy, P., Fatunla, O. K., Stenström, T. A., Okoh, A. I. (2025). Virulence and Antibiotic Resistance Genes in Enterococcus from Wastewater for Reuse and Their Health Impact. Microorganisms, 13(5), 1045. DOI: https://doi.org/10.3390/microorganisms13051045
    5. Fatunla, O. K., Adegoke, A. A., Ofon, U. A., Aiyegoro, O. A. (2025). Systematic review and meta-analysis of the occurrence of Listeria monocytogenes in fresh produce in selected developing countries. F1000Research, 14, 63. DOI: https://doi.org/10.12688/f1000research.157911.1
    6. Uka, E., Fatunla, O. K., Nelson, V. A., Udosen, C. I., Ugor, M. A. (2025). Antimicrobial activity of ethanolic extract of Hunteria umbellata seeds on selected clinical isolates. GSC Biological and Pharmaceutical Sciences, 32(1), 203-214. DOI: https://doi.org/10.30574/gscbps.2025.32.1.0247
    7. Ambrose, I. S., Ayua, T. J., Ioryue, S. I., Abraham, N. A., Chukwu, U. K., Udoh, D. (2025). Antibiotic-resistant bacteria X-rayed in bioaerosols from the Edonwhii beach atmosphere in eastern Nigeria. The Microbe, 8, 100465. DOI: https://doi.org/10.1016/j.microb.2025.100465
    8. Ambrose, I. S., Ayua, T. J., Abraham, N. A., Chukwu, U. K., Ekpa, I., Silas, I. I., Udoette, U. S. (2025). Seasonal Variation of Outdoor Bioaerosol Transport and the Attendant Health Risks at High Traffic Density in Port Harcourt City, Nigeria. Aerosol Science and Engineering. DOI: https://doi.org/10.1007/s41810-025-00326-z
    9. Nwobodo, I. H., Alonge, A. F., Ossom, I. S., Onwe, D. N., Fatunla, O., Igoche, K. (2025). Effect of Sun and Solar Drying on the Proximate Composition and Mineral Properties of Zobo Leaves. 2025 ASABE Annual International Meeting, Toronto, Canada. DOI: https://doi.org/10.13031/aim.202500054

    2024

    1. Obot, U. R., Obot, U. R., Inyangudon, A. I., Abraham, N. A. and Etok, C. A. (2024). Antimicrobial Activity of the Ethanol Extract of Lemongrass (Cymbopogon citratus) and Thyme (Thymus vulgaris) on Dental Caries-Causing Bacteria. Frontiers in Environmental Microbiology. DOI: https://doi.org/10.11648/j.fem.20241004.12
    2. Ekong, J., Fatunla, O. K., Ita, B. N., Asamudo, N. U., John, O. U. M., Abraham, N. A., Essien, J. P. (2024). Antibiosis and GC-MS of secondary metabolites of rhizosphere bacteria from Manatee food plants in the humic freshwater ecosystem of Eniong river, Nigeria. Recent Advances in Natural Sciences, 2, 68. DOI: https://doi.org/10.61298/rans.2024.2.1.68
    3. Udoukpo, F., Bassey, I., Yaro, C., Fatunla, O., Ita, B., Inam, E., Essien, J. P. (2024). Phytochemical associes of fungal endophytes in Nigeria Riverine Mangrove ecosystem. Journal of Materials & Environmental Sustainability Research, 4(3), 1-12. DOI: https://doi.org/10.55455/jmesr.2024.009
    4. Fatunla, O. K., Adegoke, A. A., Offiong, N. O., Ofon, U. A., Shaibu, S. E., Inam, E. J., Reddy, P., Essien, J. P. (2024). Catabolic gene indices of hydrocarbon diminution in Ultisol treated with cropped Bacillus altitudinis-amendments. Scientific African, 25, e02323. DOI: https://doi.org/10.1016/j.sciaf.2024.e02323
    5. Udoukpo, F. C., Bassey, I. N., Yaro, C. A., Fatunla, O. K., Essien, J. P. (2024). Diversity and host structure affinity of endophytic fungi associated with deltaic mangroves in Iko River Estuary, Nigeria. World Journal of Applied Science & Technology, 16(2), 224-232. DOI: https://doi.org/10.4314/wojast.v16i2.224
    6. Akinjogunla, O. J., Itah, A. Y. (2024). GC-MS profiling and in vitro antibacterial efficacy of aqueous leaf extracts of Ocimum gratissimum Linn. and Vernonia amygdalina Del. FUDMA Journal of Sciences, 8(6), 346-354. DOI: https://doi.org/10.33003/fjs-2024-0806-2995
    7. Nkantion, N. U., Ekwu, A. O., Sankey, O. E., Enyiekere, G., Itah, A. Y. (2024). Effect of bioaugmentation and natural attenuation on physicochemical characteristics of soil contaminated with graded concentrations of spent engine oil. World Journal of Applied Science & Technology, 16(2), 175-180. DOI: https://doi.org/10.4314/wojast.v16i2.175
    8. Nkantion, N. U., Itah, A. Y. (2024). Bacterization of spent engine oil impacted tropical garden soil hydrocarbon for degradation and bioremediaton. World Journal of Applied Science & Technology, 16(1), 142-149. DOI: https://doi.org/10.4314/wojast.v16i1.142
    9. Ofon, U. A., Ndubuisi-Nnaji, U. U., Udofia, G. E., Fatunla, O. K., Shaibu, S. E. (2024). Improving bioenergy production from anaerobic co-digestion of paper waste and chicken manure using coconut shell biochar. FUDMA Journal of Sciences, 8(6), 107-113. DOI: https://doi.org/10.33003/fjs-2024-0806-2869
    10. Egbomuche, R. C., Ekwenye, U. N., Udofia, G. E., Ikeh, C. E., Ikeh, A. O. (2024). Utilization of Humic Substances by Bacteria Isolated From Humic Freshwater Sediment Ecosystem. Journal of Environment, Climate, and Ecology, 1(1), 1-16. DOI: https://doi.org/10.69739/jece.v1i1.22
    11. Egbomuche, R. C., Ekwenye, U. N., Udofia, G. E., Anosike, I. K., Etang, U. E., et al. (2024). Physicochemical and Bacteriological analyses of Eniong river water and sediment in southern Nigeria. Asian Journal of Environment and Ecology, 23(5), 48-63. DOI: https://doi.org/10.9734/ajee/2024/v23i5547
    12. Unimke, A. A., Okezie, O., Mohammed, S. E., Mmuoegbulam, A. O., Abdullahi, S., Ofon, U. A., Olim, D. M., Badamasi, H., Galadima, A. I., Fatunla, O. K., Abdullahi, A., Yahaya, S. M., Ibrahim, M. M., Muhammad, A. B., Iya, N. I. D., Ayanda, O. S. (2024). Microbe–plant–nanoparticle interactions: role in bioremediation of petroleum hydrocarbons. Water Science & Technology, 90(10), 2870-2893. DOI: https://doi.org/10.2166/wst.2024.362
    13. Obadimu, C. O., Shaibu, S. E., Enin, G. N., Ituen, E. B., Anweting, I. B., Ubong, U. U., Ekwere, I. O., Adewusi, S. G., Adeoye, T. J., Fapojuwo, D. P., Ofon, U. A., Fatunla, O. K., Essien, N. S., Audu, O. Y., Tshentu, Z. R., Nelana, S. M., Klink, M. J., Ayanda, O. S. (2024). Aqueous phase adsorption of phenothiazine derivative onto zinc oxide doped activated carbon. Scientific Reports, 14(1), 21611. DOI: https://doi.org/10.1038/s41598-024-71196-7
    14. Fatunla, O., Igoche, K., Alonge, A. F., Udofia, U., Oladejo, A., Udoh, M. E., Akpan, M. G. (2024). Microbial properties of Hibiscus sabdariffa processed through different thermal methods. Recent Advances in Natural Sciences, 78. DOI: https://doi.org/10.61298/rans.2024.2.2.78
    15. Ofon, U. A., Ndubuisi-Nnaji, U. U., Fatunla, O. K., Akan, O. D., Shaibu, S. E., Offiong, N. O., Sandy, I. Y., Egong, E. J., Ibuotenang, N. D. (2024). Emerging trends in POME treatment and applications: chemical and biotechnological aspects. Journal of Materials & Environmental Sustainability Research, 4(1), 11-44.
    16. Ofon, U. A., Ndubuisi-Nnaji, U. U., Udo, I. M., Udofia, E. S., Fatunla, O., Shaibu, S. E. (2024). Biogas production potential from anaerobic co-digestion of food waste and animal manure. Journal of Chemical Society of Nigeria, 49(1). DOI: https://doi.org/10.46602/jcsn.v49i1.949
    17. Akpakpan, A. E., Udo, I. E., Uwanta, E. J., Akpanudo, N. W., Ikpe, E. E., Fatunla, O. K., Udoakpan, U. I., Sunday, D. G., Umoh, G. O., Umo, A. M. (2024). Influence of operating variables on the adsorption of Pb²⁺ and Cd²⁺ from wastewater using Gmelina arborea and its ester derivatives. Journal of Natural and Applied Sciences, Pakistan, 6(2), 1950-1968.
    18. Akinjogunla, O. J., Otong, A. E., Etok, U. C., Fatunla, O. K. (2024). Biogenic synthesis of silver nanoparticles by Lactobacillus planetarium isolated from fermented sorghum bicolor and in vitro antimicrobial activities. Science World Journal, 20(1), 206-213. DOI: https://doi.org/10.4314/swj.v20i1.27

    2023

    1. Asitok, A., Ekpenyong, M., Akwagiobe, E., Asuquo, M., Rao, A., Ubi, D., Iheanacho, J., Ikharia, E., Antai, A., Essien, J., Antai, S. (2023). Interspecific protoplast fusion of atmospheric and room-temperature plasma mutants of Aspergillus generates an L-asparaginase hyper-producing hybrid with techno-economic benefits. Preparative Biochemistry & Biotechnology, 53(7), 827-840. DOI: https://doi.org/10.1080/10826068.2022.2150643
    2. Asitok, A., Ekpenyong, M., Ben, U., Antigha, R., Ogarekpe, N., Rao, A., Akpan, A., Benson, N., Essien, J., Antai, S. (2023). Stochastic modeling and meta-heuristic multivariate optimization of bioprocess conditions for co-valorization of feather and waste frying oil toward prodigiosin production. Preparative Biochemistry & Biotechnology, 53(6), 690-703. DOI: https://doi.org/10.1080/10826068.2022.2134891
    3. Asitok, A., Ekpenyong, M., Amenaghawon, A., Akwagiobe, E., Asuquo, M., Rao, A., Ubi, D., Iheanacho, J., Etiosa, J., Antai, A., Essien, J., Antai, S. (2023). Production, characterization and techno-economic evaluation of Aspergillus fusant l-asparaginase. AMB Express, 13(1), 2. DOI: https://doi.org/10.1186/s13568-022-01505-8
    4. Offiong, N. O., Fatunla, O. K., Essien, J. P., Yang, C., Dong, J. (2023). Soil washing of total petroleum and polycyclic aromatic hydrocarbons from crude oil-contaminated ultisol using aqueous extracts of waterleaf. Environmental Technology, 44(1), 35-44. DOI: https://doi.org/10.1080/09593330.2021.1961875
    5. Ebong, G. A., Etuk, H. S., Okon, A. O., Anweting, I. B., Ekot, A. E., Essien, J. P. (2023). Air Quality Index of some Commercial Centres in Uyo Metropolitan Area, Akwa Ibom State, Nigeria. British Journal of Earth Sciences Research, 11(3), 28-46. DOI: https://doi.org/10.37745/bjesr.2013/vol11n32846
    6. Ekanem, J. O., Itah, A. Y., Ndubuisi-Nnaji, U., Gabriel, P. U., Raphael, M. I., Godswill, M. U. (2023). Physicochemical and Microbiological Assessment of Utaewa Estuary Water. Journal of Advances in Microbiology, 23(10), 1-10. DOI: https://doi.org/10.9734/jamb/2023/v23i10751
    7. Ekanem, J. O., Itah, A. Y., Ndubuisi-Nnaji, U. (2023). Microbial diversity, heavy metals and hydrocarbons concentration in some fish species from Qua Iboe River Estuary, Akwa Ibom State, Nigeria. GSC Advanced Research and Reviews, 16(1), 242-251. DOI: https://doi.org/10.30574/gscarr.2023.16.1.0321
    8. Simon, N., Shaibu, S. E., Fatunla, O. K., Johnson, A. S., Ekpo, P. A. (2023). Natural clay mineral-periwinkle activated carbon composite: Characterisation and structural insight. World Journal of Applied Science & Technology, 15(1), 15-18. DOI: https://doi.org/10.4314/wojast.v15i1.15
    9. Adegoke, A. A., Ben, U. C., Fatunla, O. K. (2023). Production and characterization of plantaricin Y11 from Lactiplantibacillus Plantarum strain y11 (MW642245.1) isolated from Nigerian food samples and their applications in preserving milk. World Journal of Applied Science & Technology, 15(1), 118-128. DOI: https://doi.org/10.4314/wojast.v15i1.118
    10. Flores-García, B. D., Fatunla, O., Adeleye, A. O., Babagana, M., Nkereuwem, M. E., Awais, M., Yakubu Manbe, M. (2023). Making Sustainable Agriculture Possible Through the Utilization of Plant-Microbe Interactions. SciWaveBulletin, 1(1), 34-40. DOI: https://doi.org/10.61925/swb.2023.1106
    11. Shaibu, S., Inam, E., Moses, E., Ofon, U., Fatunla, O., Obadimu, C., Ibuotenang, N., Offiong, N., Ekpo, V., Adeoye, T., Udokang, E., Fapojuwo, D. (2023). Prospects of nanosorption and photocatalysis in remediation of oil spills. Journal of the Nigerian Society of Physical Sciences, 1043. DOI: https://doi.org/10.46481/jnsps.2023.1043
    12. Irabor, M. O., Adegoke, A. A., Inyang, C. U., Fatunla, O. K., Ekpenyong, M. E. (2023). Screening for Hepatitis E virus (HEV) in slaughtered pig for meat in Uyo using both serological and molecular methods and assessing their public health appraisal. World Journal of Applied Science & Technology, 15(2), 255-259. DOI: https://doi.org/10.4314/wojast.v15i2.15
    13. George, A. E., Antia, U. E., Adeleke, A. J., Fatunla, O. K. (2023). Optimisation of polyhydroxy butyrate production by Lysinibacillus fusiformis and Metabacillus indicus isolated from spent engine-oil contaminated soil. UMYU Journal of Microbiology Research, 8(2), 30-39. DOI: https://doi.org/10.47430/ujmr.2382.005
    14. Ambrose, I. S., Udoh, D., Abraham, N., Ekong, U., K. Chukwu, U., E. Ukpong, S. (2023). Bio-aerosols and their virulence factors in Edonwhii Beach atmosphere, Eastern Obolo LGA, Nigeria. Environmental Contaminants Reviews, 6(2), 75-80. DOI: https://doi.org/10.26480/ecr.02.2023.75.80
    15. Nkanang, A. J., Abraham, N. A., Udoh, D. I., Udosen, C. I., Udofa, E. J., Anene, S. K. (2023). Bacteriological assessment of crab (Pachycheles pubescens) and dog whelk (Nucella lapillus) shellfishes from mesotidal estuarine ecosystem. African Journal of Clinical and Experimental Microbiology, 24(2), 204-210. DOI: https://doi.org/10.4314/ajcem.v24i2.10
    16. Nkanang, A. J., Udoh, D. I., Abraham, N. A., Udofa, E. J., Udosen, C. I., James, I. U. (2023). Loads and virulence of bacterial isolates associated with the finfish (Caranx hullianus) harvested from Okwanobolo River Estuary. World Journal of Applied Science & Technology, 15(2), 379-384. DOI: https://doi.org/10.4314/wojast.v15i2.33

    2022

    1. Essien, J. P., Ikpe, D. I., Inam, E. D., Okon, A. O., Ebong, G. A., Benson, N. U. (2022). Occurrence and spatial distribution of heavy metals in landfill leachates and impacted freshwater ecosystem: An environmental and human health threat. PLOS ONE, 17(2), e0263279. DOI: https://doi.org/10.1371/journal.pone.0263279
    2. Offiong, N. O., Inam, E. J., Fatunla, O. K., Ofon, U. A., Abraham, N. A., Essien, J. P. (2022). Metagenomic signature and total petroleum hydrocarbons distribution in a crude oil contaminated ultisol remediated with biochar–humus sediment slurry. Remediation Journal, 32(4), 299-308. DOI: https://doi.org/10.1002/rem.21734
    3. Asitok, A., Ekpenyong, M., Takon, I., Antai, S., Ogarekpe, N., Antigha, R., Edet, P., Ben, U., Akpan, A., Antai, A., Essien, J. (2022). Overproduction of a thermo-stable halo-alkaline protease on agro-waste-based optimized medium through alternate combinatorial random mutagenesis of Stenotrophomonas acidaminiphila. Biotechnology Reports, 35, e00746. DOI: https://doi.org/10.1016/j.btre.2022.e00746
    4. Asitok, A., Ekpenyong, M., Takon, I., Antai, S., Ogarekpe, N., Antigha, R., Edet, P., Antai, A., Essien, J. (2022). A novel strain of Stenotrophomonas acidaminiphila produces thermostable alkaline peptidase on agro-industrial wastes: process optimization, kinetic modeling and scale-up. Archives of Microbiology, 204(7), 400. DOI: https://doi.org/10.1007/s00203-022-03010-9
    5. Udofia, G. E., Uba, I. G., Inyang-Enin, A. O., Ubiebi, C. O., Ntino, E. S., Etok, C. A. (2022). Microbial abundance, diversity and physicochemistry of sediments of Iko River Estuary, Akwa Ibom State. World Journal of Applied Science & Technology, 14(1), 18-29.
    6. Osu, S. R., Udofia, G. E., Ndaeyo, N. U. (2022). Improving Crude Oil Contaminated Soil with Organic Amendments: Effect of Oil Palm Bunch Ash and Dried Poultry Litters on Soil Properties and Cassava Growth and Yields. Journal of Applied Sciences and Environmental Management, 26(10), 1647-1656. DOI: https://doi.org/10.4314/jasem.v26i10.5

    2021

    1. Agbo, B. E., Etim, D. O., Itah, A. Y., & Brooks, A. A. (2021). Evaluation of Microbial Loads and Physico-Chemicals of Cassava Mill Effluent Simulated Soil. South Asian Journal of Research in Microbiology, 9(1), 13-26. https://doi.org/10.9734/sajrm/2021/v9i130200
    2. Akan, O. D., Udofia, G. E., Okeke, E. S., Mgbechidinma, C. L., Okoye, C. O., Zoclanclounon, Y. A. B., … Adebanjo, O. O. (2021). Plastic waste: Status, degradation and microbial management options for Africa. Journal of Environmental Management, 292, 112758. DOI: https://doi.org/10.1016/j.jenvman.2021.112758
    3. Fatunla, O., Essien, J., Ofon, U., Shaibu, S. and Dan, E. (2021). Microbial diversity of Nigerian sludge and its potential for use as biofertilizer. Biotechnology Journal International, 25(1): 14-22
    4. Ofon, U.A., Ndubuisi-Nnaji, U.U., Shaibu, S.E., Fatunla, O.K. and Offiong, N.O. (2021). Recycling anaerobic digestate enhances the co-digestion potential of agro-industrial residues: Influence of different digestates as sources of microbial inoculum. Environmental Technology, DOI: 10.1080 / 09593330.2021.1952313

    2020

    1. Adegoke, A.A., Fatunla, O.K. and Okoh, A.I. (2020). Critical threat associated with carbapenem-resistant gram-negative bacteria: prioritizing water matrices in addressing total antibiotic resistance. Annals of Microbiology, 70(43): 1-13
    2. Ntukidem, V. E., EtokAkpan, O. U., Abraham, N. A. and Umohinyang, E. U. (2020). Physiocochemical and antimicrobial evaluations of food grade ash aqueous extract from furnace and charred plantain peel and palm bunches: A comparative approach. International Journal of Food and Nutrition Sciences, 5(1):091-097
    3. Ntukidem, V. E., Edima-Nyah, A. P., Ndah, L. S. and Abraham, N. A. (2020). Assessment of microbiological safety and organoleptic properties of tiger-nut (Cyperus esculentus) beverage processed locally and sold in Uyo Metropolis of Akwa Ibom State, Nigeria. International Journal of Food Nutrition and Safety, 11(1):37-50
    4. Uko, M., Udotong, I., Ofon, U., Umana, S. and Abraham, N. (2020). Effect of Hydrocarbon Contamination on the Microbial Diversity of Freshwater Sediments within Akwa Ibom State, Nigeria. Journal of Chemical, Environmental and Biological Engineering, 4(2):32-38

    2019

    1. Joseph P. Essien, Edu D. Inam, Donald I. Ikpe, Godwin E. Udofia, Nsikak U. Benson. (2019). Ecotoxicological status and risk assessment of heavy metals in municipal solid wastes dumpsite impacted soil in Nigeria. Environmental Nanotechnology, Monitoring & Management, 11(2019) 100215. https://doi.org/10.1016/j.enmm.2019.100215
    2. Abraham, N and Offiong, N., Ukafia, O. P. and Akpan, P. E. (2019). Source Apportionment of Polycyclic Aromatic Hydrocarbons (PAHs) in a Tropical Estuarine Epipelic Sediment and its Associated Bacterial Degrading Potential. Current Journal of Applied Science and Technology, 32(1):1-11
    3. Osu, S. R, Udosen, I. R, Udofia, G. E. (2019). Remediation of crude oil contaminated soil, using organic supplement: effects of growth and heavy metal uptake in cassava. Journal of Applied Sciences and Environmental Management. (JASEM-04-1937).
    4. Dan, E.U., Inam, E., Fatunla, O.K., Essien, J., Odon, A., Kang, S. and Semple, K. (2019). Effect of Pyrolysis Temperature on properties of Sludge from Wastewater Treatment Plant in Nigeria. Journal of Chemical Society of Nigeria, 44(2): 208-227.
    5. Akpan, S. B., Abraham, N. A., Nkannang, A. and Essien, J. P. (2019). Fate of 2- & -3 Ring Polycyclic Aromatic Hydrocarbons in Estuarine Mudflat from Iko River Estuary, Nigeria. World Journal of Applied Science and Technology, 11(2):148-156
    6. Egbomuche, R., Abraham, N. A., Essien, J. P. and Anosike, I. K. (2019). Humic Substance Utilizing Potential of Bacteria Isolated from the “Blackwater” Ecosystem of Eniong River, Okopedi-Itu, Nigeria. World Journal of Applied Science and Technology, 11(2):129-138
    7. Abraham, N. A., Inam, E., Asamudo, N. U. and Essien, J. P (2019). Molecular Characterization of Micrococcus luteus: A Potential Source of Bioremediation of Crude Oil Polluted Site. World Journal of Applied Science and Technology, 11(2):114-121

    2018

    1. Udosen, C. I., Umana, S. I., Essien, J. P., Bassey, M. P. and Uko, M. P. (2018). Diversity and population dynamics of microbial groups in pelagic column of Iko River, Eastern Obolo, L.G.A. Akwa Ibom State, Nigeria. J**ournal of Applied Life Science International**, 17(3):1-14
    2. Udosen, C. I., Essien, J. P., Umana, S. I., Ekong, U. E. and Nkanang, A. J. (2018). Microbiological properties and population dynamics of atmosphere in meso-tidal estuarine Akwa Ibom State, Nigeria. Journal of Advances in Biology and Biotechnology, 17(4):1-19.
    3. Solomon J. Etuk, Senyene Umana and Joseph P. Essien (2018). Evaluation of environmental health status of Edonwhii sandy beach in Akwa Ibom State using bio-physicochemical indices of contamination. World Journal of Pharmaceutical and Life Sciences, 4 (9): 22 -31.
    4. Uduak, S. Fred, Otobong Donald Akan, Joseph P. Essien and Senyene Umana (2018). Microbial diversity and heavy metals concentration of wood smoked-fish from Edonwhii Fishing Settlement in Akwa Ibom State, Nigeria. European Journal of Nutrition and Food Safety, 8(4): 284 -290
    5. Obot, U. R., Udofia, G. E., Osundu, C. and Essien, J. P. (2018). Microbiological Properties of the Lenthic Sediment of Eniong River and the Wetland Soils International Journal of Research, Innovations and Sustainable Development, 8(1): 170-174
    6. Dan, E.U., Inam, E., Fatunla, O.K., Essien, J., Odon, A., Kang, S. and Semple, K. (2018). Chemical Characterization of Sludge Generated from Water Treatment Plants (WTPs) in Nigeria. Journal of Chemical Society of Nigeria, 43(4): 643-655.
    7. Fatunla, O. K. and Essien J.P. (2019). Effects of Hydrocarbon Contamination on Bioluminiscent Bacteria, Soil Enzyme and Fertility Index of a Tropical Ultisol WOJAST, 10(1B): 131-136.

    2017

    1. Kayode Fatunla, Edu Inam, Joseph Essien, Emmanuel Dan, Akanimo Odon, Suil Kang and Kirk T. Semple. (2017). Influence of Composting and Thermal Processing on the Survival of Microbial Pathogens and Nutritional Status of Nigeria Sewage Sludge. International Journal of Recycling of Organic Waste in Agriculture (Springer), 6:301-310.
    2. Okon UC, Umana SI, Fatunla OK, Abiaobo NO Essien JP (2017). Bacterial Contaminant and Heavy Metal Accumulating Potential of Fin-Fishes (Synodontis obesus and Marcusenius senegalensis from Humic Freshwater. J. Adv. Microbiol., 6(1): 1-14.

    2016

    1. Essien, J. P. and Umana, S. I. (2016). Diauxic Effect of Biostimulant on Crude Oil Polluted Soil (Published Book), Lambert Academic Publishers, Deutschland, Germany, 174p.
    2. Richard C. John, Emem Ntino and Essien, J. P. (2016). Ammonium oxidizing bacteria activity and nitrification rate in oil contaminated wetland soil under remediation with nutrient supplements and leguminous plants. Journal of Environmental Protection, 7: 545 - 553.
    3. John, R. C., Ntino, E. S. and Itah, A. Y. (2016). Impact of Crude oil on Soil Nitrogen Dynamics and Uptake by Legumes Grown in Wetland Ultisol of the Niger Delta, Nigeria. Journal of Environmental Protection, 7: 507- 515.
    4. Essien J. P., Inam, E., Abraham, N. and Udofia, G. (2016). Enhanced biodegradation of PAHs using biosurfactant producing bacteria from a humic freshwater ecosystem of Eniong River, Itu-Nigeria. Journal of Global Ecology and Environment, 4 (3): 166 - 175.
    5. Abraham, N. and Essien, J. P. (2016). Enhanced Bioremediation (Published Book), Lambert Academic Publishers, Deutschland, Germany, 133p

    2015

    1. Idongesit Ambrose, Wesley Braid and J. P. Essien (2015) Assessment of Air Quality (Bioaerosols) of Municipal Waste Dumpsite in Uyo Urban, Akwa Ibom State, Nigeria. International Journal of Scientific and Research Publications, 5(9): 1 - 6.
    2. Idongesit Ambrose, Nweke, C. O., Umeh, S. C. I., J. P. Essien and Akpan, P. E. (2015). Bioaerosols load, spatial distribution and quality in the outdoor air environment of Uyo Urban in Akwa Ibom State, Nigeria. World Journal of Applied Science & Technology, 6 (2): 145 - 153.
    3. Itah, A. Y. and Eyo, F. A. (2015). Assessing the Microbiological and Heavy Metal Burden in Some Fresh Water and Marine Fishes in a Segment of the Bight of Bonny, Niger Delta Area of Nigeria. Journal of Microbial and Biochemical Technology, 7(4):68. ISSN 1948-5948.

    2014

    1. Edu Inam, Nnanake-Abasi Offiong, Suil Kang, Paul Yang Kang and Essien, J. P. (2014). Monitoring human health risk assessment of emerging organic contaminants in water resources in Niger Delta Region, Nigeria. Science and Technology for Sustainability, 12: 310 - 329.
    2. Olajire, A.A. and Essien, J.P. (2014) Aerobic degradation of petroleum components by microbial consortia. Petroleum & Environmental Biotechnology UK, 5(5): 6 – 22
    3. Benson, N. U., Essien, J. P., Asuquo, F. E. and Eritobor, A. L. (2014). Occurrence and distribution of Polycyclic aromatic hydrocarbons in surface microlayer and subsurface seawater of Lagos Lagoon, Nigeria. Environmental Monitoring and Assessment, Netherlands DOI 10.1007//s10661-014-3800-z