Removal of the herbicide 2,4-dichlorophenoxyacetate from water to zinc–aluminium–chloride layered double hydroxides

Legrouri, A.; Lakraimi, Mohamed; Barroug, Allal; Roy, A. De; Besse, J.P.

doi:10.1016/j.watres.2005.03.036

Cited by 127 publications

(76 citation statements)

References 22 publications

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“…RB19) at relatively basic pH was carried out in the absence of nitrogen and therefore is susceptible to be contaminated by atmospheric CO 2 . This hypothesis has been reported in other works (Legrouri et al 2005;Lakraimi et al 2006;EL Gaini et al 2008b). This phenomenon takes place despite the precautions taken during the preparation of the solid sample and the kinetics study, when the pH value is high.…”

Section: Effect Of Phsupporting

confidence: 86%

“…A similar behaviour was obtained for other adsorbate with LDHs materials (EL Gaini et al 2008a;Legrouri et al 2005). Figure 4a displays the retention isotherms of RB19 onto 40, 60 and 100 mg of LDH.…”

Section: Effect Of Phsupporting

confidence: 83%

“…The broad adsorption band around 3,400 cm -1 is due to the stretching of O-H groups of the hydroxide layer and interlayer water. In the low-frequency region, the bands at 809, 601 and 451 cm -1 are ascribed to the lattice vibration modes attributed to M-O and M-O-M vibrations (Legrouri et al 2005). The asymmetric stretching vibration m a (S=O) appears in the region 1,150-1,260 cm -1 .…”

Section: Adsorption Isothermsmentioning

confidence: 93%

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Removal of Remazol Blue 19 from wastewater by zinc–aluminium–chloride-layered double hydroxides

et al. 2013

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Layered double hydroxides (LDHs), also called anionic clays, consist of cationic brucite-like layers and exchangeable interlayer anions. These hydrotalcite-like compounds, with Zn and Al in the layers and chloride in the interlayer space, were prepared following the coprecipitation method at constant pH. The affinity of this material for Remazol Blue 19, RB19 [2-(3-(4-Amino-9,10-dihydro-3-sulpho-9,10-dioxoanthracen-4-yl) aminobenzenesulphonyl) vinyl) disodiumsulphate], was studied as a function of contact time, pH of the solutions LDH dose and the RB19/[Zn-Al-Cl] mass ratio. It was found that 48 h is enough time for the equilibrium state to be reached with maximum RB19 retention at pH of 9 for an LDH dose equal to 100 mg and with an RB19/[Zn-Al-Cl] mass ratio higher than 3. The adsorption isotherm, described by the Langmuir model, is of L-type. The results demonstrate that RB19 retention on LDHs occurs by adsorption on external surface when RB19/[Zn-Al-Cl] mass ratio is equal or \3 and by both adsorption and interlayer ion exchange for ratios higher than 3. A mechanism for removal of RB19 anion has been confirmed by X-ray diffraction, IR spectroscopy and TG analysis (TG and DTG curves).

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Section: Effect Of Phsupporting

confidence: 86%

Section: Effect Of Phsupporting

confidence: 83%

Section: Adsorption Isothermsmentioning

confidence: 93%

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Removal of Remazol Blue 19 from wastewater by zinc–aluminium–chloride-layered double hydroxides

et al. 2013

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“…Among these, the chlorinated acid-phenoxy herbicides such as 2,4-D and MCPA are commonly used to control weeds in wheat, rice, corn, sugar cane and pasture. The massive use of pesticides has resulted in their presence in the environment in the form of sub-lethal pollution, and problems such as contamination of surface and groundwater have been observed (Legrouri et al, 2005). The concern of environmental protection agencies with the presence of these molecules in soils, water and air has increased greatly in recent times, particularly as it relates to protecting the quality of drinking water (Lagaly, 2001).…”

Section: Herbicides: Leaching and Residual Effectsmentioning

confidence: 99%

Herbicides and the Aquatic Environment

Botelho¹,

Cury²,

Tornisielo³

et al. 2012

Herbicides - Properties, Synthesis and Control of Weeds

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“…2;2014 4 reconstruction of their original structure (Pavlovic et al, 2005). Anion contaminants removed from the solution by CHT have been reported and shown to have high removal capacity for acids (Vreysen & Maes, 2008;Yang, Song, & Qian, 2010, 2013, heavy metal ions (Goswamee et al, 1998;Yang et al, 2005), pesticides (Inachio et al, 2001;You, Zhao, & Vance, 2002;Legrouri et al, 2005;Li et al, 2005;Cardoso & Valim, 2006), dyes (Zhu et al, 2005;Gaini et al, 2009;Asouhidou et al, 2011), halogens (Lv et al, 2006;Lv & Luo, 2007), phosphates (Shin et al, 1996;Chitrakar et al, 2005;Das et al, 2006;Cheng et al, 2009), surfactants (Pavan, Crepaldi, & Valim, 2000) and thiocyanate (Li et al, 2008), but there have been no studies of the treatment of seawater using CHT. Natural zeolite is generally associated with grassy volcanic rock in natural deposits,, and is available in large quantities at low cost (Tominaga, 2001).…”

Section: Introductionmentioning

confidence: 99%

Desalination Behavior of Calcined Hydrotalcite From Seawater for Preparation of Agricultural Cultivation Solution Using Natural Zeolite

Wajima¹

2014

EER

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The desalination behavior of calcined hydrotalcite (CHT) from seawater used to treat seawater that was subsequently subjected to zeolite treatment prior to application of irrigation water was investigated. The results revealed that CHT removed Cl -, SO 4 2-, Mg 2+ and Ca 2+ from seawater, but that Na + and K + were almost unchanged, and that CHT treatment made the pH of the solution alkaline. As the solution temperature increased, the solution pH increased, the rate of Mg 2+ , Ca 2+ , Cl -and SO 4 2-removal improved, and greater Cl -removal was observed. Following CHT treatment, the obtained solution (CHT-solution) had a high Na + content and high pH (approximately 12), while treatment of CHT-solution with natural zeolite neutralized the pH of the CHT-solution and reduced the Na + content. Although germination of radish sprouts did not observed using seawater and CHT-solution, the growth of radish sprouts could be observed using the final solution after natural zeolite treatment of CHT-solution.

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Removal of the herbicide 2,4-dichlorophenoxyacetate from water to zinc–aluminium–chloride layered double hydroxides

Cited by 127 publications

References 22 publications

Removal of Remazol Blue 19 from wastewater by zinc–aluminium–chloride-layered double hydroxides

Removal of Remazol Blue 19 from wastewater by zinc–aluminium–chloride-layered double hydroxides

Herbicides and the Aquatic Environment

Desalination Behavior of Calcined Hydrotalcite From Seawater for Preparation of Agricultural Cultivation Solution Using Natural Zeolite

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