Papers by Opololaoluwa Ijaola
Acta Physico-Chimica Sinica, 2009
摘要：恒定二价与三价阳离子比为 3((n Zn +n Mg)/n Al =3), 采用共沉淀法制备不同 Zn 含量的系列类水滑石前驱 物 Zn x Mg 3-x Al鄄HT(x =0,0.5,1... more 摘要：恒定二价与三价阳离子比为 3((n Zn +n Mg)/n Al =3), 采用共沉淀法制备不同 Zn 含量的系列类水滑石前驱 物 Zn x Mg 3-x Al鄄HT(x =0,0.5,1.0,1.5,2.0,2.5,3.0), 经焙烧得到其衍生复合氧化物催化剂 Zn x Mg 3-x AlO, 用于 N 2 O 的直接催化分解. 采用 X 射线衍射(XRD)、比表面积分析(Brunauer鄄Emmett鄄Teller)、热分析(TG鄄DSC)和傅
IOP Conference Series: Materials Science and Engineering, 2021
Remediation of emerging pollutants is an aspect of environmental research with sparse information... more Remediation of emerging pollutants is an aspect of environmental research with sparse information and knowledge, and the disposal of, these pollutants to the environment are mostly unregulated and on the increase. In view of this, the study examined the adsorptive capacity of adsorbent produced from Oxytenanthera abyssinica (COA 350°C KCl) and Bambusa vulgaris (CBV 350°C H3PO4) in remediating Pharmaceutical actives contaminants (PhACs) and polycyclic aromatic hydrocarbons (PAHs). Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, Energy Dispersive X-ray were used in characterizing adsorbents. Derivative form of Solid Phase Extraction (SPE) and Liquid-Liquid extraction procedures were used for extracting selected PhACs and PAHs from sampled solutions respectively. Batch experiments were performed to study the adsorption capacity of adsorbents at varying contact time of 30min, 2hrs and 12hrs for PAHs and 30, 180, 360, 720 and 1440 mins for PhACs. Analysis of PhACs ...
International Journal of Engineering Technologies and Management Research, 2021
Water is essential part of ecosystem, so its quality must be ascertained for use especially in Ek... more Water is essential part of ecosystem, so its quality must be ascertained for use especially in Ekole creek of Nigeria where dredging activities is heavy, hence this study examined the dredging effect on the downstream water quality of Ekole creek. Water samples were collected from four points which are; Upstream, Dredge I, Dredge II, and Downstream points. The parameters of the water quality determined showed that Turbidity and Total Suspended Solids (TSS) were higher at the Downstream point with values of 31 NTU and 1664 mg/l respectively; pH was also slightly acidic (6.61); but low in Total Dissolve Solid (TDS), Electrical Conductivity, Nitrate (NO3) and Dissolved Oxygen (DO), as compare to the Upstream. The values of the heavy metals like Pb (3.845 mg/l), Cr (0.612 mg/l) Ni (0.104 mg/l) and Cu (0.128 mg/l), at Downstream point, were above Pb (3.0605 mg/l), Cr (0.0 mg/l), Ni (0.017 mg/l) and Cu (0.102 mg/l) of the Upstream point, before the Dredging points I and II, that have correlative matrix of(Pb>Fe>Mn>Zn>Cu>Ni>Cr) and Pb>Fe>Cr>Mn>Zn>Cu>Ni Downstream point. Is discovered the Downstream water is slightly acidic, high in Turbidity and TSS, but low in TDS, EC, NO3 and DO, as against the WHO drinking-water quality, due the effect of dredging on the water quality of the Ekole Creek. It is inferred that the dredging activities have negative effects on the water quality, which can be hazardous to the health of downstream user, and distort the ecosystem; therefore the commercial dredging activities should be checked in Ekole creek.
International Journal for Research in Applied Science and Engineering Technology, Mar 31, 2022
Waste proliferation has increasingly become a serious concern of municipal authorities in recent ... more Waste proliferation has increasingly become a serious concern of municipal authorities in recent times, especially for developing countries and municipalities. This paper presents the composition of municipal solid wastes generated in the Yenagoa metropolis and dumped in the Yenagoa Central waste dumpsite, Bayelsa State Nigeria. The character of the municipal solid waste was determined in terms of the composition of individual waste in the waste stream using average mass (kg) and percentage composition by mass of the various components using electronic weighing balance. It was found that 53.125% of the solid waste generated in the study area was made up of organic waste. Out of this percentage, food waste was the most abundant with 32.38% by mass. Vegetable waste recorded 5.8% composition by mass. Paper and Textile recorded 6.5% and 6.38% respectively. Wood waste had 2.13% composition by mass. While the percentage of inorganic waste within the waste stream was 46.875% in the following order, Plastic and nylon bags recorded 20.38% by mass of the total waste stream. Bottles, leathers, ceramics and construction wastes recorded 8%, 1.38%, 1.13% and 5.63% respectively. Electronic waste recorded 6.75% composition by mass. Metals, Cans and Battery wastes recorded 0.75%, 2% and 0.25% respectively. Finally, medical waste recorded 0.63% composition by mass. It is recommended that adequate financial provision, proper waste legislation, training and retraining of staff and full community participation in waste management should be encourage. Formal composting and recycling facilities should also be setup to enhance adequate management of waste.
Agricultural Engineering International: The CIGR Journal, 2020
Pharmaceutical wastes are emerging organic contaminants, mostly unregulated and on the increase. ... more Pharmaceutical wastes are emerging organic contaminants, mostly unregulated and on the increase. This study evaluates the potential of low-cost activated carbons derived from bamboo in remediating Pharmaceutical actives contaminants (PhACs) and compared with Oclansorb. Two species of bamboos were processed into activated carbons using ZnCl 2 , KCl, and H 3 PO 4 . Selections of the bamboo adsorbents were based on porosity and surface area using BET analysis. Batch adsorption process was used with contact time as bench mark for comparison. Carbonized Bambusa vulgaris (CBV350 O C H 3 PO 4 ) has the highest surface area (SPAS) of 30.1342 m 2 /g when compared to other adsorbents while carbonized Oxythenantera abyssinica (COA 350 O C KCl) gave the highest pore size (AAPW) 446.4384(A). CBV (350 O C H 3 PO 4 ) gave type IV isotherm classification which favors mono and multilayer adsorption as compared to others adsorbents that obeys the type III isotherm classification . COA with KCl activ...
International Journal of Engineering and Technology Innovation, 2013
The adsorptive capacity of metal ions from surface water with activated and non-activated carbon ... more The adsorptive capacity of metal ions from surface water with activated and non-activated carbon derived from bamboo was investigated. The validation of adsorption kinetics of Cl, PO4 and Pb was done by pseudo-first and second order model while adsorption isotherms was proved by Langmuir and Freundlich isotherm model for activated and non- activated bamboo granular carbon. Generally, the amount of metal ions uptake increases with time and activation levels and the pH of bamboo granular carbon increase with activation. Similarly, the pore space of the activated carbon also increases with activation levels. The correlation coefficients (R 2 ) show that the pseudo-second order model gave a better fit to the adsorption process with 0.9918 as the least value and 1.00 as the highest value as compared with the pseudo-first order with 0.813 as the highest value and 0 as the least. The Freundlich isotherm was more favorable when compared with the Langmuir isotherm in determining the adsorpti...
International Journal of Engineering Technologies and Management Research, 2021
Water is essential part of ecosystem, so its quality must be ascertained for use especially in Ek... more Water is essential part of ecosystem, so its quality must be ascertained for use especially in Ekole creek of Nigeria where dredging activities is heavy, hence this study examined the dredging effect on the downstream water quality of Ekole creek. Water samples were collected from four points which are; Upstream, Dredge I, Dredge II, and Downstream points. The parameters of the water quality determined showed that Turbidity and Total Suspended Solids (TSS) were higher at the Downstream point with values of 31 NTU and 1664 mg/l respectively; pH was also slightly acidic (6.61); but low in Total Dissolve Solid (TDS), Electrical Conductivity, Nitrate (NO3) and Dissolved Oxygen (DO), as compare to the Upstream. The values of the heavy metals like Pb (3.845 mg/l), Cr (0.612 mg/l) Ni (0.104 mg/l) and Cu (0.128 mg/l), at Downstream point, were above Pb (3.0605 mg/l), Cr (0.0 mg/l), Ni (0.017 mg/l) and Cu (0.102 mg/l) of the Upstream point,before the Dredging points I and II, that have ...
The absorptive capacity of metal ions from surface water with activated and non-activated carbon ... more The absorptive capacity of metal ions from surface water with activated and non-activated carbon derived from
bamboo was investigated. The validation of adsorption kinetics of Cl, PO4 and Pb was done by pseudo-first and
second order model while adsorption isotherms was proved by Langmuir and Freundlich isotherm model for activated
and non- activated bamboo granular carbon. Generally, the amount of metal ions uptake increases with time and
activation levels and the pH of bamboo granular carbon increase with activation. Similarly, the pore space of the
activated carbon also increases with activation levels. The correlation coefficients (R2) show that the pseudo-second
order model gave a better fit to the adsorption process with 0.9918 as the least value and 1.00 as the highest value as
compared with the pseudo-first order with 0.813 as the highest value and 0 as the least. The Freundlich isotherm was
more favorable when compared with the Langmuir isotherm in determining the adsorptive capacity of bamboo
granular activated carbon. The study has shown that chemical activation increases the pore space, surface area and the
pH of bamboo granular carbon which ultimately increases the adsorption rate of metal ions in the contaminated
surface water.
Keywords: adsorption, metal ions, activation levels, activated carbon, bamboo
Volume 8 Issue 12 by Opololaoluwa Ijaola
International Journal of Engineering Technologies and Management Research, 2021
Water is essential part of ecosystem, so its quality must be ascertained for use especially in Ek... more Water is essential part of ecosystem, so its quality must be ascertained for use especially in Ekole creek of Nigeria where dredging activities is heavy, hence this study examined the dredging effect on the downstream water quality of Ekole creek. Water samples were collected from four points which are; Upstream, Dredge I, Dredge II, and Downstream points. The parameters of the water quality determined showed that Turbidity and Total Suspended Solids (TSS) were higher at the Downstream point with values of 31 NTU and 1664 mg/l respectively; pH was also slightly acidic (6.61); but low in Total Dissolve Solid (TDS), Electrical Conductivity, Nitrate (NO3) and Dissolved Oxygen (DO), as compare to the Upstream. The values of the heavy metals like Pb (3.845 mg/l), Cr (0.612 mg/l) Ni (0.104 mg/l) and Cu (0.128 mg/l), at Downstream point, were above Pb (3.0605 mg/l), Cr (0.0 mg/l), Ni (0.017 mg/l) and Cu (0.102 mg/l) of the Upstream point, before the Dredging points I and II, that have correlative matrix of(Pb>Fe>Mn>Zn>Cu>Ni>Cr) and Pb>Fe>Cr>Mn>Zn>Cu>Ni Downstream point. Is discovered the Downstream water is slightly acidic, high in Turbidity and TSS, but low in TDS, EC, NO3 and DO, as against the WHO drinking-water quality, due the effect of dredging on the water quality of the Ekole Creek. It is inferred that the dredging activities have negative effects on the water quality, which can be hazardous to the health of downstream user, and distort the ecosystem; therefore the commercial dredging activities should be checked in Ekole creek.
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Papers by Opololaoluwa Ijaola
bamboo was investigated. The validation of adsorption kinetics of Cl, PO4 and Pb was done by pseudo-first and
second order model while adsorption isotherms was proved by Langmuir and Freundlich isotherm model for activated
and non- activated bamboo granular carbon. Generally, the amount of metal ions uptake increases with time and
activation levels and the pH of bamboo granular carbon increase with activation. Similarly, the pore space of the
activated carbon also increases with activation levels. The correlation coefficients (R2) show that the pseudo-second
order model gave a better fit to the adsorption process with 0.9918 as the least value and 1.00 as the highest value as
compared with the pseudo-first order with 0.813 as the highest value and 0 as the least. The Freundlich isotherm was
more favorable when compared with the Langmuir isotherm in determining the adsorptive capacity of bamboo
granular activated carbon. The study has shown that chemical activation increases the pore space, surface area and the
pH of bamboo granular carbon which ultimately increases the adsorption rate of metal ions in the contaminated
surface water.
Keywords: adsorption, metal ions, activation levels, activated carbon, bamboo
Volume 8 Issue 12 by Opololaoluwa Ijaola
bamboo was investigated. The validation of adsorption kinetics of Cl, PO4 and Pb was done by pseudo-first and
second order model while adsorption isotherms was proved by Langmuir and Freundlich isotherm model for activated
and non- activated bamboo granular carbon. Generally, the amount of metal ions uptake increases with time and
activation levels and the pH of bamboo granular carbon increase with activation. Similarly, the pore space of the
activated carbon also increases with activation levels. The correlation coefficients (R2) show that the pseudo-second
order model gave a better fit to the adsorption process with 0.9918 as the least value and 1.00 as the highest value as
compared with the pseudo-first order with 0.813 as the highest value and 0 as the least. The Freundlich isotherm was
more favorable when compared with the Langmuir isotherm in determining the adsorptive capacity of bamboo
granular activated carbon. The study has shown that chemical activation increases the pore space, surface area and the
pH of bamboo granular carbon which ultimately increases the adsorption rate of metal ions in the contaminated
surface water.
Keywords: adsorption, metal ions, activation levels, activated carbon, bamboo