Removal of indigo carmine dye from water to Mg–Al–CO3-calcined layered double hydroxides

Gaini, L. El; Lakraimi, Mohamed; Sebbar, E.; Meghea, Aurelia; Bakasse, M.

doi:10.1016/j.jhazmat.2008.04.089

Cited by 204 publications

(104 citation statements)

References 30 publications

(41 reference statements)

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“…No separated phases for Al 3+ cations (Al 2 O 3 ) were observed, indicating that these cations were dispersed in the MgO matrix solid solution [19], which is capable of being restored to LDH when rehydrated [5]. These observations were consistent with CLDH patterns cited in the literatures [1,3,17]. Figures 3(c -e) also shows that the diffraction patterns of dye-loaded CLDHs displaying peaks corresponding to (d 003 ) and (d 006 ) which are similar to the original LDH's XRD pattern.…”

Section: X-ray Diffractionsupporting

confidence: 89%

“…Most of them are synthetic aromatic benzenoid compounds with potential toxic, mutagenic and carcinogenic properties, endangering human health and environment [1]. Generally, they are difficult to treat by conventional water treatment as they are structurally stable to biodegradation [2,3].The most efficient colour removal from aqueous solution has been attributed to adsorption, which largely employs activated carbon (AC) as adsorbent.…”

Section: Introductionmentioning

confidence: 99%

“…Since AC is commercially costly for large scale production and difficult to regenerate, alternative adsorbents are being sought. A positively charged anionic clay known as layered double hydroxide (LDH), with an empirical formula [M Calcination of LDHs at temperature 400 -700 °C can decompose LDH containing carbonate or nitrate to release CO 2 or NO x gas with end products containing a solid mixture of Mg-Al oxide, which can revert to the original structure (reconstruction) of LDH upon rehydration [1,6]. This phenomenon, well known as 'memory effect' was responsible for enhanced uptake of anionic dye removal by CLDH in comparison to its precursor LDH.…”

Section: Introductionmentioning

confidence: 99%

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ADSORPTION OF ANIONIC DYES FROM AQUEOUS SOLUTIONS BY CALCINED AND UNCALCINED Mg/Al LAYERED DOUBLE HYDROXIDE

Sumari

Hamzah

Kantasamy

2016

MJAS

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The uptake of Acid Blue 29 (AB29), Reactive Orange 16 (RO16) and Reactive Red 120 (RR120) from aqueous solutions by calcined (CLDH) and uncalcined Mg/Al layered double hydroxide (LDH) has been investigated. The adsorption process was conducted in a batch mode at 25 °C. Anionic dye removal was more efficient using the CLDH rather than LDH. The adsorption process by CLDH involved reconstruction and hydration of the calcined LDH and intercalation of AB29, RO16 and RR120. Physical characterization using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR) were used to ascertain the 'memory effect' phenomenon that is structural reconstruction to regain its original LDH after rehydration. To gain insight into the mechanism of adsorption by CLDH, the pseudo-first order (PFO) and pseudo-second order (PSO) and intraparticle diffusion (IPD) kinetic models were used to analyse experimental data. Based on the correlation coefficient (R 2 ), the PSO has better fitting (R 2 = 0.987 -1.00) compared to PFO (R 2 = 0.867 -0.990). Furthermore the values of maximum adsorption capacity, (q e ) calculated from PSO model are consistent with the experimental q e indicating that the experimental kinetic data for AB29, RO16 and RR120 adsorption by CLDH are suitable for this model. Recycling of the adsorbent, in cycles of calcination-reconstruction process promised a possibility of regeneration of CLDH.Keywords: calcined, adsorption capacity, reconstruction, memory effect, regeneration Abstrak Penyingkiran pewarna Acid Blue 29 (AB29), Reactive Orange 16 (RO16) dan Reactive Red 120 (RR120) daripada larutan akues menggunakan Mg/Al dwi-hidroksida berlapis berkalsin (CLDH) dan tanpa kalsin (LDH) telah dilakukan menggunakan kaedah berkelompok pada suhu 25 °C. Penjerapan bahan pewarna menggunakan CLDH didapati lebih berkesan berbanding LDH. Penjerapan bahan pewarna oleh CLDH berlaku melibatkan proses penghidratan dan penstrukturan semula CLDH dan juga apitan AB29, RO16 dan RR120. Pencirian fizikal pada bahan penjerap yang diperolehi dengan menggunakan kaedah Pembelauan Sinar-X (XRD), Mikroskopi Imbasan Elektron (SEM) dan Spektroskopi Inframerah Transformasi Fourier (FTIR) telah digunakan untuk mengenalpasti fenomena 'kesan memori', iaitu proses penstrukturan semula kepada LDH selepas berlaku penghidratan. Cerapan lebih lanjut mengenai mekanisme proses penjerapan ini, model-model kinetik pseudo tertib pertama (PFO), pseudo tertib kedua (PSO) dan resapan intrapartikel (IPD) telah digunakan untuk menganalisis data ujian. Berdasarkan nilai pekali korelasi (R 2 ), model PSO didapati lebih sesuai (R 2 = 0.99 -1.00) berbanding PFO (R 2 = 0.85 -0.99). Fakta ini diperkukuhkan lagi dengan nilai kapasiti penjerapan maksimum, (q e ) hasil pengiraan menggunakan PSO yang didapati konsisten dengan q e ujian (q e, expt .) untuk AB29, RO16 dan RR120. Kitaran semula bahan penjerap melalui beberapa siri kitaran pengkalsinan-penstrukturan semula juga didapati dapat menjanjikan penjanaan semula CLDH.

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Section: X-ray Diffractionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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ADSORPTION OF ANIONIC DYES FROM AQUEOUS SOLUTIONS BY CALCINED AND UNCALCINED Mg/Al LAYERED DOUBLE HYDROXIDE

Sumari

Hamzah

Kantasamy

2016

MJAS

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“…The materials are known to function as effective anion adsorbents in the uptake of phenols, terephthalate, anionic surfactants, ionizable pesticides and herbicides, humic and fulvic acid, anionic dyes, and colored organics from aqueous solutions (Ulibarri et al, 1995;Hermosin et al, 1996;Pavlovic et al, 1997;Barriga et al, 2002;Crepaldi et al, 2002;You et al, 2002a;Orthman et al, 2003;Pavlovic et al, 2005;Li et al, 2005;Cardoso and Valim, 2006;Vreysen and Maes, 2008;Chao et al, 2009;Gaini et al, 2009;Valente et al, 2009;Setti et al, 2010;Sun et al, 2010). Based on the ability of LDH to intercalate various types of anions in interlayers, organic-inorganic composite materials could be produced by intercalation of organic anions having functional groups in their structure into the interlayers of LDH.…”

Section: Uptake Of Nonionic Organic Compounds By Organically Modifiedmentioning

confidence: 99%

Hybrid Inorganic/Organic Composites of Layered Double Hydroxides Intercalated with Organic Acid Anions for the Uptake of Hazardous Substances from Aqueous Solution

Kameda¹,

Yoshioka²

2011

Metal, Ceramic and Polymeric Composites for Various Uses

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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 indigo carmine dye from water to Mg–Al–CO3-calcined layered double hydroxides

Cited by 204 publications

References 30 publications

ADSORPTION OF ANIONIC DYES FROM AQUEOUS SOLUTIONS BY CALCINED AND UNCALCINED Mg/Al LAYERED DOUBLE HYDROXIDE

ADSORPTION OF ANIONIC DYES FROM AQUEOUS SOLUTIONS BY CALCINED AND UNCALCINED Mg/Al LAYERED DOUBLE HYDROXIDE

Hybrid Inorganic/Organic Composites of Layered Double Hydroxides Intercalated with Organic Acid Anions for the Uptake of Hazardous Substances from Aqueous Solution

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

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