Characterization and Application of Dried Plants to Remove Heavy Metals, Nitrate, and Phosphate Ions from Industrial Wastewaters
Identifieur interne : 000338 ( Main/Exploration ); précédent : 000337; suivant : 000339Characterization and Application of Dried Plants to Remove Heavy Metals, Nitrate, and Phosphate Ions from Industrial Wastewaters
Auteurs : Mohamed Chiban [Maroc] ; Amina Soudani [Maroc] ; Fouad Sinan [Maroc] ; Saida Tahrouch [Maroc] ; Michel Persin [France]Source :
- CLEAN – Soil, Air, Water [ 1863-0650 ] ; 2011-04.
Descripteurs français
- Wicri :
- topic : Biomasse.
English descriptors
- KwdEn :
Abstract
Low cost adsorbents were prepared from dried plants for the removal of heavy metals, nitrate, and phosphate ions from industrial wastewaters. The efficiency of these adsorbents was investigated using batch adsorption technique at room temperature. The dried plant particles were characterized by N2 at 77 K adsorption, scanning electron microscopy, energy dispersive X‐ray spectroscopy, Fourier transform infrared spectroscopy, and phytochemical screening. The adsorption experiments showed that the microparticles of the dried plants presented a good adsorption of heavy metals, phosphate, and nitrate ions from real wastewaters. This adsorption increased with increasing contact time. The equilibrium time was found to be 30 min for heavy metals and nitrate ions and 240 min for phosphate ions. After the adsorption process, the Pb(II) concentrations, as well as those of Cd(II), Cu(II), and Zn(II) were below the European drinking water norms concentrations. The percentage removal of heavy metals, nitrates, and phosphates from industrial wastewaters by dried plants was ∼94% for Cd2+, ∼92% for Cu2+, ∼99% for Pb2+, ∼97% for Zn2+, ∼100% for ${\rm NO}_{{\rm 3}}^{{-} } $ and ∼77% for ${\rm PO}_{{\rm 4}}^{3{-} } $ ions. It is proved that dried plants can be one alternative source for low cost absorbents to remove heavy metals, nitrate, and phosphate ions from municipal and industrial wastewaters.
Url:
DOI: 10.1002/clen.201000127
Affiliations:
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The efficiency of these adsorbents was investigated using batch adsorption technique at room temperature. The dried plant particles were characterized by N2 at 77 K adsorption, scanning electron microscopy, energy dispersive X‐ray spectroscopy, Fourier transform infrared spectroscopy, and phytochemical screening. The adsorption experiments showed that the microparticles of the dried plants presented a good adsorption of heavy metals, phosphate, and nitrate ions from real wastewaters. This adsorption increased with increasing contact time. The equilibrium time was found to be 30 min for heavy metals and nitrate ions and 240 min for phosphate ions. After the adsorption process, the Pb(II) concentrations, as well as those of Cd(II), Cu(II), and Zn(II) were below the European drinking water norms concentrations. The percentage removal of heavy metals, nitrates, and phosphates from industrial wastewaters by dried plants was ∼94% for Cd2+, ∼92% for Cu2+, ∼99% for Pb2+, ∼97% for Zn2+, ∼100% for ${\rm NO}_{{\rm 3}}^{{-} } $ and ∼77% for ${\rm PO}_{{\rm 4}}^{3{-} } $ ions. It is proved that dried plants can be one alternative source for low cost absorbents to remove heavy metals, nitrate, and phosphate ions from municipal and industrial wastewaters.</div></front></TEI><affiliations><list><country><li>France</li><li>Maroc</li></country><region><li>Languedoc-Roussillon</li><li>Occitanie (région administrative)</li></region><settlement><li>Montpellier</li></settlement></list><tree><country name="Maroc"><noRegion><name sortKey="Chiban, Mohamed" sort="Chiban, Mohamed" uniqKey="Chiban M" first="Mohamed" last="Chiban">Mohamed Chiban</name></noRegion><name sortKey="Chiban, Mohamed" sort="Chiban, Mohamed" uniqKey="Chiban M" first="Mohamed" last="Chiban">Mohamed Chiban</name><name sortKey="Sinan, Fouad" sort="Sinan, Fouad" uniqKey="Sinan F" first="Fouad" last="Sinan">Fouad Sinan</name><name sortKey="Soudani, Amina" sort="Soudani, Amina" uniqKey="Soudani A" first="Amina" last="Soudani">Amina Soudani</name><name sortKey="Tahrouch, Saida" sort="Tahrouch, Saida" uniqKey="Tahrouch S" first="Saida" last="Tahrouch">Saida Tahrouch</name></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Persin, Michel" sort="Persin, Michel" uniqKey="Persin M" first="Michel" last="Persin">Michel Persin</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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