Effect of Turbidity and Contact Time on the Rate of Biosorption of Ni2+, Pb2+, Cr3+ and Cu2+ from Wastewater Using Moringa oleifera

Geoffrey, C. Jerome; Kituyi, John L.; Lutta, S.

doi:10.9734/csji/2018/39672

Cited by 2 publications

(3 citation statements)

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“…The decrease in the biosorption process may be due to the adsorption of positively charged metal ions to the negatively charged ions present in the turbid solution, thereby rendering them unavailable for the biosorption process (Figure 6). Geoffrey et al, [34] observed that as turbidity of aqueous solution increased from 20 to 50 NTU, the biosorption process of Ni(II) and Pb(II) ions by using Moringa oleifera seed was reduced. The surface morphology of biosorbent showed more roughness after biosorption process (Figure 7b) as compared to its surface before biosorption (Figure 7a).…”

Section: Effect Of Turbiditymentioning

confidence: 99%

Study of Biosorption and Desorption Process of Cu (II), Cr (VI), Pb (II) and Zn (II) Ions by Using Peels of <em>Citrus aurantifolia</em>

Begum¹

2021

Preprint

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Heavy metal pollution in the aquatic water bodies via the discharge of various toxic heavy metals from industrial effluents has been a major concern in the present era. Various physical and chemical processes are available to solve this problem of heavy metal pollution. Biosorption is considered as a potential alternative for the removal of heavy metals from waste waters as compared to other conventional processes. In the present work, biosorption of Cu(II), Cr(VI), Pb(II) and Zn(II) ions from aqueous solutions was carried out by using peels of Citrus aurantifolia. The peels were found to be efficient in the biosorption of all four metal ions under study. The biosorption process was found to be influenced by factors like contact time, temperature, pH, turbidity as well as biosorbent dose. Further, the change in characteristics of Citrus aurantifolia after biosorption process was studied by using E-SEM, EDAX and FT-IR analysis. The adsorption isotherm studies revealed that Freundlich isotherm model showed better fir to experimental data as compared to Langmuir isotherm model. The results were found to be significant statistically. The regeneration of biosorbent was carried out by desorption study by using certain eluents.

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Section: Effect Of Turbiditymentioning

confidence: 99%

Study of Biosorption and Desorption Process of Cu (II), Cr (VI), Pb (II) and Zn (II) Ions by Using Peels of <em>Citrus aurantifolia</em>

Begum¹

2021

Preprint

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“…). To describe feasibility of Langmuir model, the dimensionless constant R L was calculated by following equation: (4) where Co is the highest initial metal concentration (mmol L -1…”

Section: Fig 2 the Ftir Spectra Of The Cs Before And After Pb(ii) Cu(...mentioning

confidence: 99%

“…Preferred characteristics of the adsorbent, which include, high efficiency, selectivity and rapid biosorption process, were confirmed for lignocellulosic materials in many studies. Geoffrey et al 2018, find that Moringa olifera could be used as an effective biosorbent for Ni, Pb, Cr and Cu ion removal [4]. Allium Cepa seeds can remove up to 99% of Pb, Cu and Cd ions [5] while rice husk can be used as Pb and Cu adsorbent [6].…”

Section: Introductionmentioning

confidence: 99%

Corn Silk as Biosorbent for Pb, Zn and Cu Removal: Batch and Fixed-bed Column Study

Simić

Petrović

Šoštarić

et al. 2021

IRJPAC

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In this study, the minimization of heavy metal pollution was investigated. Accordingly, potential of corn silk as biosorbent of Pb, Zn and Cu from multimetal solution was considered in batch and fixed-bed column experiments. Structural changes of corn silk before and after heavy metal removal were determined using SEM-EDX and FTIR analyses. For investigation of biosorption performance the Langmuir and Freundlich isotherm models were applied at batch experimental results. Fast biosorption process and high adsorption capacity (0.382; 0.200 and 0.171 mmol g-1 for Pb2+, Cu2+ and Zn2+, respectively) confirmed that the corn silk is suitable for heavy metals removal. In order to produce a novel and improved column package for fixed-column bed study implementation, the corn silk was immobilized with alginate. The fixed-bed column was saturated with Pb-Cu-Zn multimetal solution. The breaktrought time is 95, 100 and 90 min for Pb2+, Cu2+ and Zn2+ respectively, where 87.5, 81.9 and 95.5% Pb2+, Cu2+ and Zn2+ was removed, respectively. Desorption sudy was performed in HNO3 (p.a.) solution where high desorption efficiency (>94%) confirmed that imobilized corn silk can be used as alternative material for metal adsorption and could be applied in purification systems.

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Effect of Turbidity and Contact Time on the Rate of Biosorption of Ni2+, Pb2+, Cr3+ and Cu2+ from Wastewater Using Moringa oleifera

Cited by 2 publications

References 0 publications

Study of Biosorption and Desorption Process of Cu (II), Cr (VI), Pb (II) and Zn (II) Ions by Using Peels of <em>Citrus aurantifolia</em>

Study of Biosorption and Desorption Process of Cu (II), Cr (VI), Pb (II) and Zn (II) Ions by Using Peels of <em>Citrus aurantifolia</em>

Corn Silk as Biosorbent for Pb, Zn and Cu Removal: Batch and Fixed-bed Column Study

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