Synergistic Study of Hydroxyiron (III) and Kaolinite Composite for the Adsorptive Removal of Phenol and Cadmium

Ogbaji, Egah Godwin; Hikon, B. N.; Sheckhar, Ngantem Godfrey; Yerima, E. A.; Mavis, Omovo; Ekirigwe, Ogah; Ayodeji, Aminu Fatai

doi:10.11648/j.ijec.20190301.15

Cited by 6 publications

(6 citation statements)

References 14 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Co = initial concentration of ammonium, Ce = equilibrium concentration of ammonium, M = mass of adsorbent (ball clay), V = solution volume, and Re = adsorptive removal efficiency (Seliem et al, 2023). To evaluate the adsorption kinetics of ammonium, the pseudo-first order kinetic model and pseudo-secondorder kinetic model were employed, as shown in equations 3 and 4 where K 1 and K 2 are constants of the equilibrium rate (Ngouateu et al, 2015;Egah et al, 2019).…”

Section: Data Analysesmentioning

confidence: 99%

See 1 more Smart Citation

Adsorptive Removal of Phosphate from Agricultural Effluent using Thermally and Non-Thermally Activated Sepiolite Clay

Yerima,

Donatus

2023

USci

View full text Add to dashboard Cite

This study assessed the use of thermally activated sepiolite clay (TASC) and non-activated sepiolite clay (NASC) as adsorbents for phosphate adsorption from agricultural effluent. The effect of pH, temperature, dosage, and time on the adsorbates was investigated at pH 4-11, temperature 298 - 318k, contact time 30 – 120 minutes, and adsorbent dosage 0.2 - 4 g in 100 mL of agricultural effluent. Fourier-transformed infrared spectroscopy (FTIR) and Scanning electron microscope (SEM) techniques were used to determine adsorbent features. TASC and NASC exhibit an excellent capacity for adsorbing phosphate molecules. At equilibrium, the removal efficiency of phosphate at 4 different varying conditions of temperature, pH, adsorbent dosage, and time gave more than 100 % for TASC, while NASC also recorded over 100% adsorption of phosphate at 3 different varying conditions. The amount of phosphate adsorbed was found to decrease with an increase in temperature and contact time. The isotherm adsorption data fitted the Langmuir better than the Freundlich model, where the correlation coefficients of Langmuir and Freundlich were 0.9994 and 0.8901, respectively. The adsorption kinetics was better explained by the pseudo-first-order kinetic model with R2 values TASC (0.9999) and NASC (0.9999) than the second order with R2 value TASC (0.9984) and NASC (0.9820).

show abstract

Section: Data Analysesmentioning

confidence: 99%

“…To further analyze the adsorption mechanism, the Langmuir and Freundlich isotherm models were adopted (Egah et al, 2019).…”

Section: 𝑡 𝑞 𝑡mentioning

confidence: 99%

Adsorptive Removal of Phosphate from Agricultural Effluent using Thermally and Non-Thermally Activated Sepiolite Clay

Yerima,

Donatus

2023

USci

View full text Add to dashboard Cite

show abstract

“…To evaluate the adsorption kinetics of ammonium, the pseudo-first order kinetic model and pseudo-second-order kinetic model were employed as shown in equations 8 and 9 where K 1 and K 2 are constants of the equilibrium rate [14].…”

Section: Data Analysesmentioning

confidence: 99%

“…To further analyze the adsorption mechanism, the Langmuir and Freundlich isotherm models were adopted [14].…”

Section: Data Analysesmentioning

confidence: 99%

Synergistic Adsorptive Removal of Urea from Agricultural Effluents Using Ball Clay and Sepiolite Composite

Amuntse Yerima,

Ataitiya,

Nwunuji Hikon et. al.

2023

JBR

View full text Add to dashboard Cite

Agriculture effluents have become a big problem since water is the basic component of all operation in agriculture practice. These effluents composed of agrochemicals such as fertilizer, pesticides, herbicides, crop residues are the pollutants of agricultural effluents. Lakes, rivers and streams often receives water run-off from farmlands. Nitrates and urea in the water bodies are toxic to aquatic lives by causing depletion of oxygen in water making it unfit for human and aquatic life. This research assessed the adsorptive removal of urea from agricultural effluent by means of thermally activated ball clay and sepiolite composite (TABCSC) and non-activated ball clay and sepiolite composite (NABCSC) as absorbent. The adsorption process was done at Varying amounts TABCSC (0.6g - 4.5g), pH range of 3 - 11, time (30 - 90 minutes) and temperature (25 – 45°C) as recommended by design expert version 13. TABCSC and NABCSC characterized by means of Fourier transformed infrared spectroscopy (FTIR) and scanning electron microscope (SEM) reveals the presence of large surface area, porosity as well as the functional groups: hydroxyl, carboxylic, hydrogen bonding and aldehyde group that aids adsorptive removal of urea. The highest adsorptive removal efficiency by TABCSC was found to be 99.23% (at pH = 7, temperature = 25°C, dosage = 0.6 g and time = 60 minutes) while that of NABCSC was at 93.23% (at pH = 11, temperature = 35°C, dosage = 0.6 g and time = 60 minutes). The adsorptive removal of urea was found to increase with increase in pH value and contact time. The adsorptive removal mechanism of Urea by TABCSC was more fitting to the second order kinetics (R2 = 0.9770) while removal by NABCSC aligns with the pseudo first order kinetics (R2 = 0.9770). The isotherm of the removal process conforms more to the Freundlich isotherm of TABCSC (R2 = 0.9995) and NABCSC (R2 = 0.9671) respectively.

show abstract

“…The amount of tailings produced ranged from 90-98 % for copper ores and 20-50 % for other minerals [3]. Some of the heavy metals found in contaminated tailings are Pb, Cr, As, Zn, Cd, Cu, Ni and Hg [4,5,6]. Heavy metal contamination and their human health threats are some of the serious environmental problems limiting mining activities [7,8].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Evaluation of Human Health Risk of Heavy Metals in Tin Mine Tailings in Selected Area of Plateau State, Nigeria

Bwede

Wuana

Egah

et al. 2021

J. Nig. Soc. Phys. Sci.

View full text Add to dashboard Cite

Tin mining tailings are unprocessed waste materials that overlie an ore which are displaced during mining activities. This research work is aimed at characterizing and evaluating the human health risk of heavy metals in tin mine tailings in Zabot (S3) and Tafan (S4) districts in Barkin Ladi Local Government Area of Plateau State, Nigeria. The samples were characterized using EDX-XRF and SEM. The concentrations of seven heavy metals (Pb, Cr, As, Ni, Cd, Cu and Zn) were determined in S3 and S4. The results showed that Cr, Ni, Cd, Cu and Zn were within the USEPA permissible limits, except for Pb and As with range of (270-300) mg/kg and (40-70) mg/kg respectively for both mining and control sites of S3 and S4. The SEM results revealed small particles size with fine porous structure, and rough areas with varying sizes and pores distributed over the surface for S3 and S4 respectively. Results of the risk assessment showed that the hazard quotient HQ and HI values were greater than 1 indicating high risk. The Carcinogenic and non-carcinogenic risks associated with Pb, Zn, Cd, Cr, Ni and As were evaluated for S3 and S4 for the three exposure pathway and it was found that the mining sites pose more risk than the control and the children were more exposed than the adults. The carcinogenicity of these samples were due to the high hazard quotient for ingestion and dermal exposure pathway. The R total results for As, Cr, Pb and Ni for mining site S3 were found to be (1.39 × 102 , 2.02 × 10-7 , 3.30 × 103 and 8.17 × 10-8 ), and control site (3.42 × 103 , 2.64 × 10-5 , 38.30 × 101 , 6.90 × 10-8 ) for As, Cr, Pb and Ni respectively. From the R total results As and Pb were more than the acceptable threshold, while Cr and Ni were below the threshold of 1 × 10-4 . For the mining site S4, the R total were found to be (5.70 × 102 , 1.82 × 10-7 , 3.63 × 104 and 9.64 × 10-9 ),and the control (1.16 × 103 , 1.71 × 10-7 , 31.1 × 102 and 1.51 × 10-8 ) for As, Cr, Pb and Ni respectively. From the results of the mining and control sites, As and Pb R total were higher than the acceptable threshold, while Cr and Ni were below the threshold of 1 × 10-4 .

show abstract

Synergistic Study of Hydroxyiron (III) and Kaolinite Composite for the Adsorptive Removal of Phenol and Cadmium

Cited by 6 publications

References 14 publications

Adsorptive Removal of Phosphate from Agricultural Effluent using Thermally and Non-Thermally Activated Sepiolite Clay

Adsorptive Removal of Phosphate from Agricultural Effluent using Thermally and Non-Thermally Activated Sepiolite Clay

Synergistic Adsorptive Removal of Urea from Agricultural Effluents Using Ball Clay and Sepiolite Composite

Characterization and Evaluation of Human Health Risk of Heavy Metals in Tin Mine Tailings in Selected Area of Plateau State, Nigeria

Contact Info

Product

Resources

About