Dr.(Mrs.) OMORUYI CHIADIKA INONO
Publication Title Enhancing petroleum contaminated soil remediation using pulverized rice straw
Publication Type journal
Publisher Springer Nature
Publication Authors Oghoje, S.U, Omoruyi, C.I, Ejeomo, C., Ifijen, I.H, Ukpebor, J.E., Asiagwu, A.K., Ukpebor, E.E and Ikhuoria, E.U.
Year Published 2024-05-02
Abstract This study investigated the efect of pulverized rice straws (PRS, Oryza sativa) on the water retention capacity (WRC) of
diesel-contaminated soils and the leaching of diesel-range organics (DROs). Diesel contamination at levels of 5, 10, and 15%
reduced the WRC by~6, 11, and 26%, respectively. However, adding PRS to 15% diesel-contaminated soils improved the
WRC by~18, 31, 53, and 75% for PRS concentrations of 1, 2.5, 5, and 10%, respectively. Furthermore, PRS concentrations
of 2.5, 5, and 10% decreased the DROs leaching from 20% diesel-contaminated soil by 34, 75, and 100%, respectively. The
fndings of this study indicate that composting with PRS enhances WRC and signifcantly reduces contamination leaching
in oil-contaminated soils. This suggests that PRS and similar green composts could optimize landfarming of organically
contaminated soils, ofering an innovative approach to repurposing waste plant biomass.
Publication Title Adsorptive decolarization of dyes in aqueous solution using magnetic sweet potato (Ipomoea batatas L.) peel waste.
Publication Type journal
Publisher Royal Society of Chemistry
Publication Authors • Diagboya, P.N., Odagwe, A., Oyem, H.H., Omoruyi, C.I and Osabohien, E.
Year Published 2024-01-20
Abstract Valorizing domestic biomass waste for contaminated water treatment may be an effective way to achieve
the sustainable development goal of attaining clean water for all. Hence, sweet potato peel (SPP) waste was
valorized by magnetizing the pretreated SPP adsorbent to prepare the magnetized adsorbent (MSP) which
was employed for methylene blue (MB) sorption. The MSP exhibited enhanced cation exchange capacity
(11%) and MB sorption greater than 100% of either of the starting pristine materials. Sorption equilibrium
was fast (20 min), and the adsorbent was effective over a wide pH (3–9) and temperature range (15–35 °
C). The observed sorption capacity of the MSP for MB was 14.3 mg g?1 and this is better than those of
most biomass-based adsorbents reported in the literature. The composite exhibited good reusability with
z70% efficiency after 5 cycles. The MB sorption mechanism was a rather complex process involving
electrostatic interaction, multi-layer adsorption, and pore-filling. Notwithstanding the enhanced sorption
capacity, the ease of magnetic separation of the MSP adsorbent from water post-adsorption, its stability,
and reusability are the major merits of this adsorbent. These facts make the MSP composite an appealing
cost-effective choice for treating MB-contaminated water.
Publication Title Effects of Chemicals and Plastics on the Environment: A review
Publication Type journal
Publisher
Publication Authors • Omoruyi, C.I., Oyem, I.M., Oyem, H.H. and Obukohwo, I
Year Published 2024-03-03
Abstract The United Nations’ Sustainable Development Goals (SDGs) of the human population states that good health
and well-being as well as building sustainable cities and communities are essential aspects of man’s
survival here on earth. This paper attempts to review the effects of chemicals, and plastics in our
contemporary environment and the innovative solutions for their safe disposal. Indiscriminate use of
chemicals, dumping of untreated domestic and industrial wastes in landfills and water bodies, burning of
refuse all contribute to the problem. It brings to focus the various means by which these pollutants get into
our environment, even unknowingly and ways by which this environmental menace can be minimized. Their
presence in our environment, particularly in the developing and under developed world has over the years
become a ticking time bomb with recourse to human health. Many debilitating human conditions such as
cancers and neurological disorders have been traced to the effects of these pollutants. Public enlightenment
on the dangers of these pollutants amongst others is advocated in this work.
Publication Title Revolutionizing Soil Remediation: Harnessing the Potential of Chicken Manure Digestates for Petroleum Hydrocarbon Contamination
Publication Type journal
Publisher Springer International Publishing
Publication Authors • Oghoje, S.U. Omoruyi, C.I Ojeomo, C. Ukpebor, Ifijen, I.H.
Year Published 2023-05-25
Abstract Abstract
This study aimed to assess the efectiveness of chicken manure digestates (CMD) in bioremediating soils contaminated with
hydrocarbons. The experiment involved three levels of nutrient stimulation using CMD (0%, 10%, and 20%) and two levels
of petroleum hydrocarbon-polluted soils (5% and 10% concentration). The nutrient and microbiological composition of
the locally sourced contaminated soil was analyzed. Total petroleum hydrocarbon (TPH) concentrations were measured at
regular intervals (0, 14, 28, 56, 84, 168, and 336 days) before and after the treatment using gas chromatography with fame
ionization detection (GC-FID) following standard protocols. The study revealed that CMD exhibited signifcant potential
as a source of hydrocarbon-utilizing microbes, with total hydrocarbon-utilizing bacteria (THUB) and total hydrocarbonutilizing fungi (THUF) reaching values of 1.6× 104
and 1.3× 104
colony-forming units per gram (cfu/g), respectively. These
fndings suggest that CMD can serve as an efective inoculant for bioremediation of hydrocarbon-contaminated soils and
related biodegradable contaminants. Comparatively, the 20% CMD treatment exhibited 52% and 35% remediation rates for
the respective pollution levels, while the 10% CMD treatment showed superior TPH degradation at day 56, with removal
rates of 59% and 39% for the 5% and 10% polluted soils, respectively. However, over longer cleanup durations (e.g., day 168),
higher TPH removal rates of 83% and 66% were observed for the aforementioned samples. Notably, the 20% CMD stimulation demonstrated better long-term bioremediation performance, especially for high levels of hydrocarbon pollution, while
the 10% CMD stimulation proved more efective for short-term remediation. Overall, this study highlights the efcacy of
CMD as an organic stimulant for the removal of organic contaminants from soils, particularly in bioremediation applications.
Publication Title Ionizing radiations and cancers.
Publication Type journal
Publisher African Journal of Health, Safety and Environment
Publication Authors • Omoruyi C.I and Oyem I.M and Odagwe, A.A
Year Published 2023-06-29
Abstract ionizing radiations are types of energies that have sufficient force to remove electrons from atoms,
creating ions in the process. They include all electromagnetic waves from ultraviolet light to x-rays and
gamma rays as well as alpha to beta particles. Ionizing radiations results in harmful effects on living
organisms such as damage of cell structures and DNA due to their ability to ionize atoms and molecules. This
paper seeks to review the effects of these radiations and how to be protected in real time. Exposure to high
levels of ionizing radiations cause immediate symptoms, such as burns, nausea, and vomiting, also it can lead
to serious health problems, including cancer, genetic mutations and death. Long-term exposure to lower levels
of ionizing radiation can increase the risks of cancer and other diseases. Cancers have become a scourge in
today’s world, with breast cancer, leukemia, cervical and prostate cancers being the most notable types. The
development of cancer is a complex multistage process that usually takes many years. The contributions of
ionizing radiations to its development cannot be overemphasized. However, ionizing radiation is also used for
beneficial purposes, such as medical imaging, radiation therapy, and for energy production. The key is to use it
safely and responsibly so as to reduce its debilitating effects.
Publication Title A review on the heightened mechanical features of nanosilica-based concrete and the response of human fibroblasts to nanosilica
Publication Type journal
Publisher
Publication Authors • Jonathan, E.M., Ikhazuagbe, H.I., Mokobia, K.E, Okeke, E.I., Omoruyi, C.I., and Anegbe, B.
Year Published 2022-08-08
Abstract Cement is utilized extensively in the manufacturing of concrete, which makes it the most common material used in building construction. However, the usage of a great deal of cement results in a great deal of CO2 emissions, which leads to the
greenhouse efect. Numerous studies have developed the use of nano-SiO2 in concrete materials to lower the cement content
of concrete mixtures while improving mechanical properties. Additionally, a number of studies have demonstrated that silica
NPs trigger an infammatory response in pulmonary fbroblasts. The main cells that produce and maintain the extracellular
matrix (ECM) in the connection of the tissue are fbroblasts. Fibroblasts are involved in processes including tissue regeneration and wound healing. Similar to angiogenesis, infammation, cancer, and pathological and physiological tissue fbrosis,
fbroblasts act as intermediaries. The efect of silica nanoparticles on the mechanical properties of concrete (compressive
strength, split tensile strength, and fexural strength) was succinctly presented in this paper. Likewise, a number of studies
on the reaction of human fbroblasts to silica nanoparticles were evaluated. Numerous research on the addition of silica
nanoparticles to concrete revealed that doing so signifcantly enhanced the material's mechanical properties. The controlled
interaction of silica nanoparticles with human fbroblast cells was demonstrated to have potential in a number of applications,
including aesthetics, intracellular drug release systems, improving scar tissue, determining the fate of biomaterials in vivo,
and designing potential prosthetics and implant surfaces to reduce bacterial adhesion
Publication Title Risk Assessment of Natural Radionuclides in Surface and Ground Water of Oil and Gas Producing Communities, Rivers State, Nigeria
Publication Type journal
Publisher
Publication Authors • Irunkwor, T.C, Omoruyi, C.I. and Ogboi, K.C.
Year Published 2022-09-05
Abstract The natural radioactivity and radiological health risk associated with the use of water from hand-dug
wells, tap/boreholes and river/creeks in three communities with history of oil spillage, gas flaring, oil bunkering and
operation of illegal artisanal oil refining activities in Rivers State, Nigeria was here assessed and measured with
gamma ray spectroscopy. The results showed that the mean activity concentration of water samples for hand-dug
well water ranged from 11.94±1.12 to 12.77± 1.12Bq/l for 238U, 7.88±1.05 to 9.20±1.82Bq/l for 232Th and
13.50±0.62 to 20.13±3.88Bq/l for 40K. The mean activity concentration for the tap/borehole water ranged from
2.42±0.45Bq/l to 5.31±0.80Bq/l for 238U, 1.02±1.01 to 2.24±0.90Bq/l for 232Th and 9.71±5.04 to 11.73±3.77Bq/l
for 40K. The 238U, 232Th and 40K activity concentrations in the river/creek waters ranged respectively from
6.81±0.80 to 8.82±1.20Bq/l, 4.25±0.65 to 9.52±1.16Bq/l and 25.01±3.23 to 30.03±1.96Bq/l. These values are
higher than the mean activity concentrations of the 3 radionuclides in the control samples and some are higher than
the international permissible standards. Results further revealed that there was statistically significant difference at
p<0.05 in the mean variations of the activity concentrations of natural radionuclides in the water supply sources
within the three communities and the control. The committed annual effective dose and excess lifetime cancer risks
are radiologically higher than the permissible limits. Therefore, children and adults in the three communities are
susceptible to high dose related diseases and have high chances of contracting cancer when water is ingested from
the three water supply sources since the committed annual effective dose and excess lifetime cancer risk are
respectively over 1.16 times and 8 times higher than the UNSCEAR and USEPA international permissible limits of
0.29mSv/y and 1x10-4 mSv/y.
Publication Title Application of Magnetic Iron Oxide Nanostructures in Drug Delivery A compact review.
Publication Type conferenceproceeding
Publisher Springer Nature Switzerland
Publication Authors • Omoruyi, C.I., Omoruyi, J.I., Aghedo, O.N., Archibong, U.D. and Ifijen, H.I.
Year Published 2023-02-07
Abstract Magnetic iron oxide nanoparticles (IONs) stand out among a plethora of drug nanocarriers as sturdy
nanoplatforms due to exceptional magnetic and biological properties, which allow them to achieve
significant drug loading as well as targeting capabilities. These applications necessitate accurate
nanoparticle design in terms of numerous characteristics that must be evaluated in tandem to achieve
maximum therapeutic efficacy. This concise overview summarizes recent advances in the roles of
untreated and modified iron oxide nanoparticles for drug delivery. These modifications included chitosan,
poly(vinylpyrrolidone), poly(vinyl alcohol), poly(lactic-co-glycolic acid), and poly(ethylene glycol). One
of the key areas of research in the targeted drug delivery domain is the invention of nanocarriers that allow
for the efficient delivery of therapeutic chemicals to specific sites. Drugs loaded onto iron oxide
nanoparticles can be efficiently guided and selectively delivered to selected sites by precisely altering the
structural features of the nanoparticles
Publication Title ADOPTING SENTINEL-1 SAR DATA FOR FLOOD MAPPING: A CASE STUDY OF BORNO STATE, NORTHEASTERN NIGERIA
Publication Type journal
Publisher Ethiopian Journal of Environmental Studies and Management
Publication Authors Okoduwa, K.A, Amaechi, C.F, Biose E., Omoruyi C.I and Henry, B.
Year Published 2024-11-19
Abstract Flooding is a significant hazard in Nigeria, with factors like climate change, deforestation,
and inadequate urban planning increasing the risk. Accurate flood mapping across large
areas is crucial for effective disaster management. This study aims to map the flood extent
in Borno State triggered by the collapse of the Alou Dam in September 2024 adopting
Sentinel-1 Synthetic Aperture Radar (SAR) data from the Google Earth Engine platform. The
analysis employed vertical transmit/vertical receive (VV) polarization, which is highly
sensitive to vertical structures, making it particularly effective for detecting flood inundation
in urban areas. To ensure accurate flood mapping, the SAR data underwent processing,
including speckle noise reduction through spatial smoothing using a focal mean filter.
Change detection analysis was conducted by comparing SAR images before (July 5–25,
2024) and after (September 5–25, 2024) the flood event. A thresholding technique was
applied to differentiate flooded from non-flooded areas, with a threshold of 5 selected a9er
testing various values to minimize false positives, especially in non-flooded rural regions.
The results indicated that approximately 356 km² of the 66,224 km² study area was
inundated, affecting heavily populated regions such as Jere, Maiduguri, Mobbar, Monguno,
Marte, Mafa, and Ngala. The study underscores the need for better urban planning and
disaster preparedness in flood-prone areas, with SAR data playing a crucial role in
monitoring and mitigating future flood event