Application of maize tassel for the removal of Pb, Se, Sr, U and V from borehole water contaminated with mine wastewater in the presence of alkaline metals

Zvinowanda, Caliphs; Okonkwo, Jonathan O.; Sekhula, Mahlatse M.; Agyei, Nana M.; Sadiku, Rotimi

doi:10.1016/j.jhazmat.2008.08.110

Cited by 54 publications

(29 citation statements)

References 28 publications

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“…The average pore diameter of DEP was within the range of 20 < d < 500 × 10 −8 cm and the adsorbent was classified as a mesoporous material [36,37]. Similarly, Rodrigues et al [38] and Zvinowanda et al [28] reported BET surface areas of 1.083 m 2 /g and 2.52 m 2 /g for activated carbon from macademia nuts used for phenol removal and maize tassels for heavy metal removal from polluted waters, respectively although adsorbents with higher surface areas have been widely reported in literature [15,[39][40][41]. …”

Section: Morphology and Textural Examination Of The Adsorbentmentioning

confidence: 77%

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A Novel Approach for the Removal of Lead(II) Ion from Wastewater Using Mucilaginous Leaves of Diceriocaryum eriocarpum Plant

et al. 2015

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Lead(II) ion is a very toxic element known to cause detrimental effects to human health even at very low concentrations. An adsorbent prepared using mucilaginous leaves from Diceriocaryum eriocarpum plant (DEP) was used for the adsorption of lead(II) ion from aqueous solution. Batch experiments were performed on simulated aqueous solutions under optimized conditions of adsorbent dosage, contact time, pH and initial lead(II) ion concentration at 298 K. The Langmuir isotherm model more suitably described the adsorption process than the Freundlich model with linearized coefficients of 0.9661 and 0.9547, respectively. Pseudo-second order kinetic equation best described the kinetics of the reaction. Fourier transform infra-red analysis confirmed the presence of amino (-NH), carbonyl (-C=O) and hydroxyl (-OH) functional groups. Application of the prepared adsorbent to wastewater samples of 10 mg/L and 12 mg/L of lead(II) ion concentration taken from a waste stabilization pond showed removal efficiencies of 95.8% and 96.4%, respectively. Futhermore, 0.1 M HCl was a better desorbing agent than 0.1 M NaOH and de-ionized water. The experimental data obtained demonstrated that mucilaginous leaves from DEP can be used as a suitable adsorbent for lead(II) ion removal from wastewater.

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Section: Morphology and Textural Examination Of The Adsorbentmentioning

confidence: 77%

“…The leaves were carefully detached from the stem of the plant and washed thoroughly with tap water to remove dirt, soil particles and debris and subsequently sun dried for 4 days. The dry biomass was ground to fine powder using a hammer mill and weighed [28]. The resulting powder was fractionated using analytical sieves.…”

Section: Preparation Of Adsorbentmentioning

confidence: 99%

A Novel Approach for the Removal of Lead(II) Ion from Wastewater Using Mucilaginous Leaves of Diceriocaryum eriocarpum Plant

et al. 2015

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“…The spectrum of the adsorbent was measured within the range of 4,000-600 cm -1 wave number. The absorption peak around 3,468-3,749 cm -1 could possibly be due to the presence of OH or NH 2 groups (Zvinowanda et al 2009). The peaks observed at 2,499-1,983 cm -1 can be assigned to stretching vibration of the C-H and C-C group.…”

Section: Characterization Of the Adsorbentmentioning

confidence: 99%

Characterization of activated Acacia nilotica seed pods for adsorption of Nickel from aqueous solution

Thenmozhi¹,

Santhi

2014

Int. J. Environ. Sci. Technol.

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The use of low-cost adsorbent has been investigated in the removal of nickel ions from aqueous solution. The adsorption of nickel is strongly dependent on various parameters such as pH, dosage, contact time and initial concentration of metal. The optimum pH for nickel removal is found to be 7.0. The removal of nickel ions increases with time and attains saturation in about 60-120 min. The experimental data were analyzed with various isotherms such as Freundlich, Langmuir Temkin and Dubinin-Radushkevich adsorption isotherm. The experimental data were fitted into the following kinetic models: Lagergren pseudo-first order, the chemisorption pseudo-second order, Elovich kinetic model, and the intraparticle diffusion model. It was observed that chemisorption pseudo-second-order kinetic model described the sorption process with high coefficients of determination better than any other kinetic models. The results indicate that the second-order model best describes adsorption kinetic data. The adsorbent was characterized; functional group was analyzed by Fourier transform infrared spectroscopy and surface morphology by scanning electron microscope, and energy dispersive X-ray diffraction were analysed.

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“…One of the new developments in recent years to remove toxic trace metals from aqueous solutions is the use of adsorbents of biological origin, including alginate, dead and living biomass, chitosan, lignin, and others [2]. Agricultural waste products such as maize tassel, rice husks, corn cobs, olive mill products and polymerized orange skin have been reported for their removal of toxic metals from aqueous solutions [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Fixed bed Column Adsorption of Cu (II) onto Maize Tassel-PVA Beads

Sekhula¹,

Okonkwo

Zvinowanda³

et al. 2012

J Chem Eng Process Technol

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Application of maize tassel for the removal of Pb, Se, Sr, U and V from borehole water contaminated with mine wastewater in the presence of alkaline metals

Cited by 54 publications

References 28 publications

A Novel Approach for the Removal of Lead(II) Ion from Wastewater Using Mucilaginous Leaves of Diceriocaryum eriocarpum Plant

A Novel Approach for the Removal of Lead(II) Ion from Wastewater Using Mucilaginous Leaves of Diceriocaryum eriocarpum Plant

Characterization of activated Acacia nilotica seed pods for adsorption of Nickel from aqueous solution

Fixed bed Column Adsorption of Cu (II) onto Maize Tassel-PVA Beads

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