Cadmium and Lead Adsorption Capacities of Nigerian Ultisol Soil of Tropics

Oluwasola, Henry Olumayowa; Asegbeloyin, Jonnie N.; Ochonogor, A E; Ani, Julius U.; Ibeji, Collins U.; Oyeka, Ebube E.

doi:10.13005/ojc/350312

Cited by 4 publications

(3 citation statements)

References 27 publications

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“…The removal efficiency of the heavy metal ions is in this array Pb 2+ ˃ Cd 2+ . Similar study has been documented in literature (Oluwasola et al 2019;Nappadol and Pongsakom 2014).…”

Section: Effect Of Temperaturesupporting

confidence: 91%

“…The higher uptake of Pb 2+ (28.57) compared to Cd 2+ (24.39) regarding maximum adsorption capacity is as a result of increasing electronegativity and decreasing ionic radii of lead. Related studies have been documented (Umeh et al 2019;Fonseca et al 2009;Oluwasola et al 2019). Furthermore, the initial lead and cadmium concentrations (15 mg/L to 150 mg/L) showed ranged values of R L from 0.21-0.03 (Pb 2+ ) and 0.12-0.01 (Cd 2+ ); thus proposing a favourable adsorption (0 < R L < 1) for both metal ions affinity onto Opi ultisol soil.…”

Section: Adsorption Isotherm Analysismentioning

confidence: 53%

“…The studied town is widely known for farming activities especially some places at Nsukka inducing poorly treated wastewater and other soil-enriching practices that keep metallic ions in soluble and mobile states. Very high concentration of lead and cadmium has been reported so far in tropical Ultisol soils in Enugu tropical and subtropical soils (Oluwasola et al 2019). Several proposed applied treatment techniques to reduce and control the mobility of these heavy metals in the soil solution have been compared and adsorption process have tendency to abstract and retain toxic metallic ions from aqueous media owing to its economic feasibility, accessibility and efficient purification (Ramachandran and Souza 2013).…”

Section: Introductionmentioning

confidence: 99%

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Kinetics and isotherm modeling of Pb(II) and Cd(II) sequestration from polluted water onto tropical ultisol obtained from Enugu Nigeria

2021

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Deterioration in soil–water environment severely contributed by heavy metal bioavailability and mobility on soil surface and sub-surface due to irrational increase in wastewater discharge and agrochemical activities. Therefore, the feasibility of adsorption characteristics of the soil is paramount in curbing the problem of micropollutant contamination in the farming vicinity. Soil from a farming site in a populated area in Enugu, Nigeria was collected and tested to measure the lead and cadmium contents using atomic absorption spectrophotometer (AAS). The adsorption potency of the ultisol soil was estimated for identifiable physicochemical properties by standard technique. The mean activity concentration of Pb2+ and Cd2+ was 15.68 mg/kg and 3.01 mg/kg. The pH, temperature, metal concentration and contact time adsorptive effect on the Pb2+ and Cd2+ uptake was evaluated by batch adsorption technique. The Langmuir, Freundlich and Temkin models were fitted into equilibrium adsorption data and the calculated results depict a better and satisfactory correlation for Langmuir with higher linear regression coefficients (Pb2+, 0.935 and Cd2+, 0.971). On the basis of sorption capacity mechanism of the soil, pseudo-second-order model best described the kinetics of both metal ions retention process. The results of the present study indicated that the soil being a low cost-effective adsorbent can be utilized to minimize the environmental risk impact of these metal ions.

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“…The removal efficiency of the heavy metal ions is in this array Pb 2+ ˃ Cd 2+ . Similar study has been documented in literature (Oluwasola et al 2019;Nappadol and Pongsakom 2014).…”

Section: Effect Of Temperaturesupporting

confidence: 91%

Section: Adsorption Isotherm Analysismentioning

confidence: 53%