Dr. Henrietta Ijeoma Kelle has been involved in lecturing and research for eleven years.

Chapters in Books Published
1. Nduka, J.K., Kelle, H.I. and Odiba, I.O. (2019). “Review of Health Hazards and
Toxicological Effects of Constituents of Cosmetics”, Poisoning in the Modern World,
IntechOpen, London, pp 59 -76. DOI: 10.5772/intechopen.84590.
2. Nduka, J.K., Kelle, H.I., Ogoko, E.C. and Okafor, P.C. (2019). “Review of
Environmental and Public Health Impact of Automobile Wastes and Automobile
Transportation in Nigeria”, Environmental Factors affecting Human, IntechOpen,
London, pp 161 – 172.3. DOI: 10.5772/intechopen.8849.
3. Eddy, N.O., Odiongenyi, A., Garg, R., Ukpe, R.A., Garg, R., Ogoko, E.C., Kelle, H.I.,
Ameh, P.O., Ogbodo, R. (2023). “Ecotoxicological aspects of Nanotechnology”. Taylor
& Francis Group and Routledge, Oxfordshire, pp 211 – 223.
Journal Articles
4. Omada, J., Ogoko, E.C., Kelle, H.I. and Yomi, G. (2024). “Water quality and health risk
assessment of metals within the vicinity of Gosa dumpsite, Abuja Nigeria”. Revista
Colombiana de Ciencias Químico – Farmacéuticas, Vol 53, No 1: 67 -100.
https://doi.org/10.15446/rcciquifa.v53n1.110647
5. Omada, I. J., Ogoko, E.C., Kelle, H.I. and Yomi, B. G. (2024). “Heavy metal pollution
indices in soil and plants within the vicinity of the Gosa Dumpsite in Abuja, Nigeria”.
Environmental Geochemistry and Health, Vol 46:223. https://doi.org/10.1007/s10653-
024-01979-4
6. Kelle, H.I. and Runde, M. (2024). “Valorization of an Agricultural Waste-Corncob:
Investigation of Potassium Oxide from Corncob Ash Crystals as an Antiseptic and
Disinfectant Agent”. Communication in Physical Sciences, Vol 11, No 2: 188 – 206.
7. Kelle, H.I., Chukwu, M.N. and Iduseri, E.O. (2024). “Absorption studies of some
agricultural solid waste as biosorbent for the clean-up of oil spill”. Communication in
Physical Sciences, Vol 11, No 3: 641 – 653.
8. Nduka, J.K., Umeh, T.C., Kelle, H.I., Okeke, F.C. Iloka, G.C. and Okafor, P.C. (2024).
“Ecological pollution features and health risk exposure to heavy metals via street dust
and topsoil from Nkpor and Onitsha in Anambra, Nigeria”. Environmental Analysis
Health and Toxicology, 39(1): e2024005.  https://doi.org/10.5620/eaht.2024005
9. Eddy, N.O., Edet, U.E., Oladele, J.O. Kelle, H.I. Ogoko, E.C., Odiongenyi, A.O. Ameh,
P., Ukpe, R.A., Ogbodo, R., Garg, R. and Garg, R. (2023). “Synthesis and application of
novel microporous framework of nanocomposite from trona for photocatalysed
degradation of methyl orange dye”. Environmental Monitoring Assessment. 195:1416.
https://doi.org/10.1007/s10661-023-12014-x
10. Kelle, H.I., Ogoko, E.C. Akintola, O., Eddy, N.O. (2023). “Quantum and experimental
studies on the adsorption efficiency of oyster shell-based CaO nanoparticles (CaONPO)

towards the removal of methylene blue dye (MBD) from aqueous solution”. Biomass
Conversion and Biorefinery. https://doi.org/10.1007/s13399-023-04947-7
11. Nduka, J.K., Umeh, T.C., Kelle, H.I., Mgbemena, M.N., Nnamani, R.A. and Okafor,
P.C. (2023). “Ecological and health assessment of heavy metals in roadside soil, dust and
water of three economic zone in Enugu, Nigeria”. Urban Climate, 51:101627.
https://doi.org/10.1016/j.uclim.2023.101627
12. Nduka, J.K., Kelle, H.I., Umeh, T.C., Okafor, P.C., Iloka, G.C. and Okoyomon, E.
(2023). “Ecological and health risk assessment of radionuclides and heavy metals of
surface and ground water of Ishiagu – Ezillo quarry sites of Ebonyi, Southeast Nigeria”.
Hazardous Materials Advances. Vol. 10: 100307.
https://doi.org/10.1016/j.hazadv.2023.100307
13. Ogoko, E.C., Kelle, H.I., Akintola, O., Eddy, N.O. (2023). “Experimental and
theoretical investigation of Crassostrea gigas (gigas) shells based CaO nanoparticles as
a photocatalyst for the degradation of bromocresol green dye (BCGD) in an aqueous
solution”. Biomass Conversion and Biorefinery. https://doi.org/10.1007/s13399-023-
03742-8
14. Eddy, N.O., Garg, R., Garg, R., Eze, S.I., Ogoko, E.C., Kelle, H.I., Ukpe, R.A., Ogbodo,
R. and Chijoke, F. (2023). “Sol-gel synthesis, computational chemistry, and applications
of Cao nanoparticles for the remediation of methyl orange contaminated water”.
Advances in Nano Research, Vol. 15, No. 1:35 – 48.
https://doi.org/10.12989/anr.2023.15.1.000
15. Ogoko, E.C., Onyemelukwe, S.A. Kelle, H.I., Iroegbulem, I., Emeziem, D. and
Fagbohun, A.A. (2023). Health risk assessment of heavy metals in drinking water from
Iponri water treatment plant, Lagos water Corporation Nigeria. Ovidius University Annals
in Chemistry. Vol. 34, N0 1: 41 – 49. DOI: 10.2478/auoc-2023-0007
16. Ogoko, E.C. Mgbemena, N, Kelle, H.I. Osu, C.I. and Aju, E. (2022). “Health risk
assessment of exposure to heavy metals in fish species consumed in Aba, Abia State,
Nigeria, Ovidius University Annals of Chemistry. Vol. 33, No 2: 177 -187. DOI:
10.2478/auoc-2022-0026
17. Nduka, J.K., Umeh, T.C., Kelle, H.I., Ozoagu, P.C., Okafor, P.C. (2022). “Health risk
assessment of radiation dose of background radionuclides in quarry soil and uptake by
plants in Ezillo – Ishiagu in Ebonyi South – Eastern Nigeria.” Case Studies in Chemical
and Environmental Engineering, Vol 6: 100269.
https://doi.org/10.1016/j.cscee.2022.100269
18. Kelle, H. I., Ogoko, E.C., Oluade, O. A., Achem, D. and Udeozo, I.P. (2022).
‘“Monitoring and health risk assessment of organochlorine pesticide residue in some
leafy and fruiting vegetables from Lagos State, Southwestern Nigeria”, Journal of the
Kenya Chemical Society, Vol. 15, No 1: 3 – 13.
19. Kelle, H.I., Ogoko, E.C., Nduka, J.K., Udeozo, P.I. and Ubani, M.C. (2022). “Health risk
assessment of heavy metal exposure through edible clay from South – Eastern and South

– Southern Nigeria”. The Pacific Journal of Science and Technology, Vol. 23, No 1: 113
– 123.
20. Nduka, J.K., Omokpariola, D.O., Kelle, H.I. Iduseri, E.O. and Mgbemena, M.N. (2022).”
Chemometric and risk assessment of nitrogen composition of atmospheric rainwater from
diverse surfaces in Rivers State, Nigeria”. Environmental Monitoring Assessment, Vol.
194: 807 – 824. https://doi.org/10.1007/s10661-022-10459-0
21. Omokpariola, D.O., Nduka, J.K., Kelle, H.I., Mgbemena, N.M. Iduseri, E.O. (2022).
“Chemometrics, health risk assessment and probable sources of total petroleum
hydrocarbon in atmospheric rainwater in rivers state, Nigeria”. Scientific Report, Vol. 12,
Article number:11829. https://doi.org/10.1038/s41598-022-15677-7
22. Nduka, J.K., Kelle, H.I., Akpunonu, E.O., Amuka, J.O. and Iloka, G.C. (2022).
“Mobility pattern, risk assessment of heavy metals in soil-dust and hazards of consuming
vegetables at auto – body workshops, International Journal of Environmental Science
and Technology. Vol. 20: 4943 – 4958. https://doi.org/10.1007/s13762-022-04288-4
23. Ogoko, E.C., Kelle, H.I. and Babaman, G.J. (2022). “Quantitative determination of
active pharmaceutical ingredient and trace elements in ciprofloxacin tablets distributed in
Lagos State, Nigeria”. Nigerian Journal of Pharmaceutical and Applied Research. Vol.
11, No. 1, 1 – 18. https://doi.org/10.60787/nijophasr-v11-i1-461.
24. Kelle, H.I., Ogoko, E.C., Udeozo, P.I., Achem, D. and Otumala, J.O. (2021). “Health
risks assessment of exposure to heavy metals in rice grown in Nigeria”. Pacific Journal
of Science and Technology, Vol 22, No 1: 262 – 273.
25. Ogoko, E.C., Kelle, H.I. and Babaman, G.J. (2021). “Quality evaluation of some brands
of amoxicillin capsules dispensed in Lagos State, Nigeria”. Communication in Physical
Sciences, Vol. 7, N0. 4: 554 – 562.
26. Nduka, J.K., Umeh, T.C., Kelle, H.I. and Amanambu, V.O. (2021). “Effect of extraction
methods on fuel properties of biodiesel and multi – blends from coconut and peanut”.
Journal of Applied Chemical Science International, 12(2): 35 – 47.
27. Nduka, J.K., Umeh, T.C., Amanambu, V.O. and Kelle, H.I. (2021). “Extraction
comparison and evaluation of characterized biodiesel from groundnut seed (Arachis
hypogaea) and its binary blends with diesel”. International Journal of Environment and
Bioenergy, 16 (1): 1 -19.
28. Ogoko, EC., Kelle, H.I. and Njoku, C.P. (2021). “Heavy metals contamination of solid
waste disposal sites in Umuahia, Abia State”. Journal of Chemical Society of Nigeria,
Vol. 46. No. 6: 0978 -0984. https://doi.org/10.46602/jcsn.v46i6.679
29. Ogoko, E.C., Mgbemena,N., Kelle, H.I. and Osiri, A.J. (2020). “Heavy metals
contamination of Anambra River”. Communication in Physical Sciences, Vol. 6: 714 –
721.

30. Nduka, J.K. Kelle, H.I. and Ogoko, E, C. (2020). “Hazards and risk assessment of heavy
metals from consumption of locally manufactured painkiller drugs in Nigeria”.
Toxicology Reports, Vol. 7: 1066 – 1074. https://doi: 10.1016/j.toxrep.2020.08.009
31. Kelle, H.I., Oluade, O.A. and Achem, O. (2020). “Human health risk assessment of
pesticide residues in solanum lycopersicum fruits sold in Lagos metropolis South-West,
Nigeria”. Communication in Physical Sciences, Vol. 5. No. 4: 533 – 543.
32. Kelle, H.I., Ogoko, E.C., Achem, D. and Ousherovich, S.A. (2020). “Health risk
assessment of heavy metals in some rice brands imported into Nigeria”. Communication
in Physical Sciences, Vol. 5. No. 2: 210 – 222.
33. Ogoko, E.C. and Kelle, H.I. (2020). “Pollution status of solid waste disposal site in
Owerri Municipal, Nigeria, International Journal of Basic Science and Technology,
Vol. 6. No. 1: 50 – 57.
34. Ogoko, E.C., Kelle, H.I. and Enete, U.O. (2019). “Pollution status of soil within the
vicinity of automobile mechanic workshops in Owerri Municipality of Nigeria”.
Communication in Physical Sciences, Vol. 4. No.1: 30 – 38.
35. Kelle, H.I. and Eboatu, A.N. (2019). “Corncob as a sorbent for crude oil and its lower
fractions”. Scientia Africana, Vol. 18. No.1: 8 – 25.
36. Nduka, J.K., Kelle, H. I. and Amuka, J. O. (2019). “Health risk assessment of cadmium,
chromium and nickel from car paint dust from used automobiles at auto-panel workshops
in Nigeria”. Toxicology Reports, Vol.6: 449–456. DOI: 10.1016/j.toxrep.2019.05.007
37. Oguezi,V.U., Kelle, H.I., Ngbede, E.O and Ajiwe, V.I.E. (2019). “Nutritional,
Antinutritional and Food Value of Onion Skin Waste”. Journal of Chemical Society of
Nigeria, Vol. 44. No. 4: 620 -627.
38. Oguezi,V.U., Ngbede, E.O., Kelle, H.I. and Ojiako, E. (2019). “Comparative Study of
Soluble and Insoluble Fibre Content of Onion (Allum Cepa) Consumed in Eastern
Nigeria”. Journal of Chemical Society of Nigeria, Vol. 44. No. 2: 298 -301.
39. Kelle H.I. (2018). “Comparative Analysis of Removal of Crude Oil and Some Refined
Petroleum Products from the Environment Using Rice Husk: Adsorption Isotherm and
Kinetic Studies”. Nigerian Journal of Basic and Applied Science, Vol. 26 No. 1:1 – 13.
http://dx.doi.org/10.4314/njbas.v26i1.1
40. Kelle, H.I., Otokpa, E, O., Oguezi, V. U. and Ibekwe, F.C. (2018). “Assessment of
Heavy Metals in Edible Clays Sold in Onitsha Metropolis of Anambra State, Nigeria”.
FUW Trends in Science and Technology Journal, Vol. 3 No. 2A : 610 – 614.
41. Udeozo, I.P., Ejikeme, C.M., Eboatu, A.N., Kelle, H.I. and Arinze, R.U. (2018). “The
Study of Characteristics, Chemical Constituents and Functional Group Analysis of
Afzelia bipindensis: A Tropical Timber. FUW Trends in Science and Technology
Journal, Vol. 3 No. 1: 261-265.

42. Kelle, H. I. and Eboatu, A. N. (2018). “Determination of the Viability of Chicken
Feather as an oil spill Clean-up Sorbent for Crude Oil and its Lower Fractions”. Journal
of Applied Sciences and Environmental Management, Vol. 22 No. 2: 267- 273.
DOI:10.4314/jasem.v22i2.19
43. Kelle, H. I. (2018). “Mopping of Crude oil and Some Refined Petroleum Products from
the Environment using Sawmill Factory Waste: Adsorption Isotherm and Kinetic
Studies”. Journal of Applied Sciences and Environmental Management, Vol. 22 No. 1:
34-40. DOI: 10.4314/jasem.v22i1.7
44. Kelle, H. I. Ngbede, E. O., Oguezi, V. U. and Ibekwe, F. C. (2018). “Determination of
Heavy Metals in Fish (Clarias gariepinus) Organs from Asaba Major Markets, Delta
State, Nigeria”. Journal of Chemical Society of Nigeria, Vol. 43. No. 1: 60 -73.
45. Kelle, H. I. and Eboatu, A. N. (2018). “Evaluation of Coconut Husk Sorbent for Cleanup
of Petroleum Contaminated Environments”. Journal of Chemical Society of Nigeria, Vol.
43. No. 1: 36 – 49.
46. Kelle, H.I., Oguezi, V.U. and Udeozo, I.P. (2015). “Qualitative and spectrophotometric
determination of potassium bromate in bread samples sold in Asaba, Delta state, Nigeria”
Pakistan Journal of Chemistry, Vol. 5, Issue 2:93 -95. DOI:10.15228/2015.v05.i02.p07
47. Udeozo, I. P., Ejikeme, C. M., Eboatu, A. N. and Kelle, H. I. (2017). “An Assay of Some
Thermal Characteristics, Chemical and Phytochemical Constituents of Hymenocarida
Acida Timber”. Journal of Applied Sciences and Environmental Management, Vol. 21.
No. 5: 931-935. DOI:10.4314/jasem.v21i5.19
48. Kelle, H. I. and Ogoko, E. C. (2017). “Assessment of Removal of Crude Oil and its
Lower Fractions from Land and Aqueous Medium Using Activated Corncob Carbon”.
FUW Trends in Science and Technology Journal, Vol. 2 No. 2: 937-944.
49. Kelle, H.I. and Udeozo, I.P. (2015). Characterization of the Chemical Properties of Some
Selected Refined Vegetable Oils Commonly Sold in Nigeria”. British Journal of Applied
Science and Technology, Vol. 5 No 538 – 546.
https://doi.org/10.9734/BJAST/2015/12940
50. Ogoko, E.C. and Kelle, H.I. (2016). “Anions, Total Petroleum Hydrocarbons and
Aromatic Hydrocarbons in Soils of Aba Dumpsites”. British Journal of Applied Science
and Technology, Vol. 14 No 1: 1-8. https://doi.org/10.9734/BJAST/2016/22084
51. Udeozo, C.M., Ejikeme, A.N., Eboatu, A.N. and Kelle, H.I. (2016). “Characterisation,
Phytochemical and Functional Groups Assay of Bombax Brevicuspe Stem: A Tropical
Timber”. American Chemical Science Journal, Vol. 15 No. 3:1 – 8.
https://doi.org/10.9734/ACSJ/2016/27047
52. Kelle, H. I. Akpuaka, M.U. and Oguezi, V.U. (2013).“Analysis and Acute Toxicity
Determination of the Dyestuff in the Effluent of a Textile Manufacturing Company
Located in the Eastern Part of Nigeria” IOSR Journal of Environmental Science,
Toxicology and Food Technology, Vol. 7. NO.1: 31 – 37. DOI: 10.9790/2402-0713137

53. Ofoegbu, O, Eneji, I. S and Kelle, H.I. (2013). “Utility Value of Solubilized Animal Hair
in Commutative Recycling of Damaged Hides and Skins”. Chemistry and Materials
Research, Vol. 3 No.10: 64 – 71.

Study of the distribution and fate of chemical pollutants in the environment, use of bio-based materials for removal of pollutants/remediation of polluted environments and synthesis of nanoparticles for the removal of chemical pollutants from the environment.

Orcid number: 0000-0003-3701-4652
Googles scholar: https://scholar.google.com/citations?user=a1UY9RgAAAAJ&hl=en
Scopus author ID: https://www.scopus.com/authid/detail.uri?authorId=57208908571

1. Conversion of Biomass for Energy Generation, 2009/2010, #1,000,000, Tertiary Education Trust Fund (TETFUND) Institutional Based Research, completed.
2. Bottling of Methane Gas Produced from Biogas for Energy Generation, 2012/2013, #1,000,000, Tertiary Education Trust Fund (TETFUND) Institutional Based Research, completed.
3. Synthesis and Application of Nanoparticle Oxide for Photodegradation of Environmental
Persistence Contaminants in Water, 2021, #3,500,000, Senate Research Grant of National Open University of Nigeria, completed.
4. Pollution Studies of Idu Waste Dumpsite, Jabi, Abuja, 2021, #2,500,000, Senate Research Grant of National Open University of Nigeria, completed.
5. Valorization of an Agricultural Waste-Corncob: Investigation of Potassium Oxide from Corncob Ash Crystals as an Antiseptic and Disinfectant Agent, 2021, #2,000,000, Senate Research Grant of National Open University of Nigeria, completed.
6. Absorption Studies of Some Agricultural Solid Waste as Biosorbent for the Clean-up of Oil Spill, 2023, #1,990,000, Tertiary Education Trust Fund (TETFUND) Institutional Based Research, completed.
7. Investigation, Ecological and Health Risk Assessment of the 16 Priority Polyaromatic Hydrocarbon in Soil, Water sources and Plants Within and Around Gosa Dumpsite, Abuja, Nigeria, 2024, #3,500,000, Senate Research Grant of National Open University of Nigeria, completed.