Analysis of the influence of natural adsorbent functionalization (Moringa oleifera) for Pb(II) removal from contaminated water
Due to lead (Pb) being highly toxic and harmful to living beings, several techniques have been studied aiming at its removal from contaminated water, with great emphasis on the adsorption process. In this sense, the objective of this study was to investigate if the chemical functionalization in bios...
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| Published in: | Environmental progress & sustainable energy Vol. 39; no. 2 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Hoboken, USA
John Wiley & Sons, Inc
01-03-2020
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Due to lead (Pb) being highly toxic and harmful to living beings, several techniques have been studied aiming at its removal from contaminated water, with great emphasis on the adsorption process. In this sense, the objective of this study was to investigate if the chemical functionalization in biosorbents of Moringa oleifera pods promotes greater potential in the process of removing lead from aqueous solution. To this end, characterization of biomass was performed by energy dispersive X‐ray spectroscopy, Fourier transform infrared spectroscopy analysis, scanning electron microscopy, X‐ray diffraction, and zero load point. Additionally, the parameters that influence the efficiency of lead biosorption have been investigated. From the studied parameters, the optimal conditions obtained for both analyzed biosorbents are as follows: 30 min to equilibrium, pH 6 and 25°C temperature. Biosorption studies revealed kinetic modeling of data were better represented by the pseudo‐second model. In relation to adsorption isotherms, the model that best fit the experimental data were the Langmuir model for both biosorbents. When comparing the biosorbents studied, it was concluded that chemical functionalization carried out using basic treatment agent was the most efficient in removing lead ions (II), and the maximum adsorption capacity obtained was 38.52 mg/g. |
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| Bibliography: | Funding information National Council for Scientific and Technological Development |
| ISSN: | 1944-7442 1944-7450 |
| DOI: | 10.1002/ep.13318 |