Phytoremediation of Contaminated Waters to Improve Water Quality

Fernández, Lucía Grijalbo; Fernández‐Pascual, Mercedes; Mañero, F. J. Gutiérrez; Lucas, Jose Antonio

doi:10.1007/978-3-319-10969-5_2

Cited by 4 publications

(1 citation statement)

References 123 publications

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“…Pb(II) in waste streams are mainly generated by several anthropogenic activities including mining, ammunition and explosives manufacturing, the ceramic industry, e-wastes, paint manufacturing, and battery production [ 4 , 5 ]. Globally, about 783,000 MT of Pb(II) is released into the environment on an annual basis [ 6 ]. The discharge of untreated wastewater containing Pb(II) is detrimental to both the environment and human health.…”

Section: Introductionmentioning

confidence: 99%

Fixed-Bed Adsorption of Lead from Aqueous Solution Using Chitosan-Coated Bentonite

Futalan

Wan

2022

IJERPH

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In this study, fixed-bed adsorption of Pb(II) from an aqueous solution using chitosan-coated bentonite (CCB) was investigated. Characterization of CCB was performed using Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The effects of varying bed height (1.3 to 4.3 cm), flow rate (0.20 to 0.60 mL/min), and initial concentration (500 to 1500 mg/L) on the length of mass transfer zone (Zm) and adsorption capacity at breakthrough (qb) and exhaustion (qe) were examined. Low flow rate and high bed height were determined to cause a longer time to reach breakthrough and exhaustion. Meanwhile, the fixed-bed system was observed to quickly attain breakthrough and exhaustion under high initial concentrations. Kinetic column models such as the Thomas, Yoon–Nelson, and Clark models were used to predict the breakthrough curves. High R2 values (0.9758 ≤ R2 ≤ 0.8087) were attained for the Thomas model, which indicates that there is good agreement between experimental data and linear plots generated by the Thomas model. Moreover, the Thomas model is best in describing the breakthrough curves of Pb(II) removal under a fixed-bed system.

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Section: Introductionmentioning

confidence: 99%