Removal of copper (II) from aqueous solution by adsorption onto low-cost adsorbents

Aydın, Haluk; Bulut, Yasemin; Yerlikaya, Çiğdem

doi:10.1016/j.jenvman.2007.01.005

Cited by 493 publications

(225 citation statements)

References 25 publications

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“…The conventional methods that are employed for the removal of heavy metals, dyes and pigments are found to be inefficient and expensive, especially when treating wastewater with low concentration of heavy metals. Some of these methods generate chemical or biological sludge which cannot be recovered or regenerated (Seetha et al 2012;Dauda et al 2010;Rao et al 2009;Aydin et al 2008;El-Ashtoukhy et al 2008;Sud et al 2008;Dabrowski et al 2004;Zhen et al 2002;Volesky and Leusch 1995).…”

Section: Introductionmentioning

confidence: 99%

Sustainable conversion of agro-wastes into useful adsorbents

et al. 2016

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Preparation and characterization of raw and activated carbon derived from three different selected agricultural wastes: kola nut pod raw and activated (KNPR and KNPA), bean husk raw and activated (BHR and BHA) and coconut husk raw and activated (CHR and CHA) were investigated, respectively. Influences of carbonization and acid activation on the activated carbon were investigated using SEM, FTIR, EDX, pH pzc and Boehm titration techniques, respectively. Carbonization was done at 350°C for 2 h followed by activation with 0.3 M H 3 PO 4 (orthophosphoric acid). Results obtained from SEM, FTIR, and EDX revealed that, carbonization followed by acid activation had a significant influence on morphology and elemental composition of the samples. SEM showed welldeveloped pores on the surface of the precursors after acid treatment, FTIR spectra revealed reduction, broadening, disappearance or appearance of new peaks after acid activation. EDX results showed highest percentage of carbon by atom respectively in the order BHA [ KNPA [ CHA respectively. The pH pzc was found to be 5.32, 4.57 and 3.69 for KNPA, BHA and CHA, respectively. Boehm titration result compliments that of pH pzc , indicating that the surfaces of the prepared adsorbents are predominantly acidic. This study promotes a sustainable innovative use of agrowastes in the production of cheap and readily available activated carbons, thereby ensuring more affordable water and effluent treatment adsorbents.

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Section: Introductionmentioning

confidence: 99%

Sustainable conversion of agro-wastes into useful adsorbents

et al. 2016

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“…The percentage of Cu(II) ion adsorbed at active site on activated cellulose adsorbent surface at pH 7 has a similarity with cellulose-MBT adsorbent. This was due to the fact that at pH 7, the adsorbent has reached a stable maximum binding capability as reported by Yin et al [25] and Aydin et al [28].…”

Section: The Effect Of Phmentioning

confidence: 59%

“…At lower pH values, the H + ions compete with the metal ions for the exching sites in the adsorbent and the binding of Cu(II) ion with active site on the adsorbent surface was very low. When the pH increases, the concentration H + ions decreases, the binding of Cu(II) ion with active site on the adsorbent surface was very high [28]. The percentage of Cu(II) ion adsorbed at active site on activated cellulose adsorbent surface at pH 7 has a similarity with cellulose-MBT adsorbent.…”

Section: The Effect Of Phmentioning

confidence: 89%

“…If the binding of -N=CH-and S are soft base and can act as soft donor atom, N and S atom are a tend to bind with soft acid than border line (Cu(II) ion) and hard acid [32]. Active sites at activated cellulose are carbonyl (C=O) or hydroxyl groups (OH) and considered a strong Lewis base [28]. This result confirm, that the percentage Cu(II) ion adsorbed by active site cellulose-MBT and activated cellulose adsorbent were equal, because interaction between N and S atom (soft base) at active site of cellulose-MBT and carbonyl (C=O) or hydroxyl groups (OH) (hard base) at active site activated cellulose adsorbent are less disfavor with Cu(II) ion (border line acid) according HSAB theory.…”

Section: The Effect Of Mbt Addition At Activated Cellulosementioning

confidence: 99%

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Synthesis, Characterization of Cellulose Modified with 2-Mercaptobenzothiazole and Its Adsorption To Cu(II) Ion in Aqueous Solution

Fatoni¹,

Koesnarpadi

Hidayati

2015

Indones. J. Chem.

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The modification of cellulose with 2-mercaptobenzhotiazole (MBT) through grafting and impregnating methods has been done. Modified cellulose used as adsorbent for Cu(II) ion in aqueous solution. The aims of research were modification cellulose with 3-chloropropyltrimethoxysilane and 2-mercaptobenzhotiazole (MBT), characterization of the modified cellulose with FTIR, SEM and XRD and adsorption study between cellulose-MBT adsorbent with Cu(II) ion in aqueous solution. The adsorbent of cellulose-MBT was synthesized by reflux process. Adsorption study between cellulose-MBT adsorbent with Cu(II) ion was investigated based on influence of pH solution, interaction time and initial concentration of Cu(II) ion. The result showed that activated cellulose can be modified with MBT to become cellulose-MBT adsorbent. The functional group of -C=N appeared at wavenumber 1658 cm -1 attributed to functional group of -C=N-is Schiff base of MBT. Presence functional group of S-H at cellulose-MBT adsorbent was not detected. The surface morphology of cellulose-MBT adsorbent after being interacted with Cu(II) ion was different before being interacted with Cu(II) ion. The diffractogram of cellulose-MBT adsorbent has similarity with cellulose-MBT adsorbent-Cu(II) ion. The optimum adsorption of Cu(II) ion was observed at pH 7.0 and 150 min of interaction time. Percentage of Cu(II) ion was absorbed by cellulose-MBT adsorbent tended to be constant after Cu(II) ion concentration 100 ppm. Keywords: modified cellulose; MBT; Cu(II) in aqueous solution ABSTRAK Telah dilakukan modifikasi selulosa dengan senyawa organik melalui metode penempelan dan impregnasi. Selulosa termodifikasi kemudian digunakan sebagai adsorben ion Cu(II) dalam larutan berair. Tujuan dari penelitian ini adalah modifikasi selulosa dengan 3-kloropropiltrimetoksisilen dan 2-merkaptobenzotiazol (MBT), karakterisasi selulosa termodifikasi menggunakan FTIR, SEM, XRD dan studi adsorpsi antara adsorben selulosa-MBT dengan ion Cu(II) dalam larutan berair. Adsorben selulosa-MBT disintesis dengan proses refluks. Eksperimen adsorpsi antara adsorben selulosa-MBT dengan ion Cu(II) dipelajari berdasarkan pengaruh pH larutan, waktu interaksi dan konsentrasi ion Cu(II). Hasil penelitian menunjukkan bahwa selulosa teraktivasi dapat dimodifikasi dengan senyawa organik menjadi adsorben selulosa-MBT. Gugus fungsi -C=N yang merupakan Basa

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“…(mg/g) expresses the AR114 amount that each unit adsorbent adsorbs in the equilibrium condition, (mg/L) stands for the AR114 concentration that remains in the solution after the adsorption when the equilibrium condition is reached, (L/mg) is the equilibrium constant, and max expresses the adsorbate amount (mg/g) that is needed for single-layered form [25]. Langmuir equation is linearized as follows:…”

Section: Adsorption Equilibrium Studiesmentioning

confidence: 99%

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

Kaykıoğlu

Güneş

2016

Journal of Nanomaterials

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The removal of Acid Red 114 (AR114) dye by adsorption process, using the magnetic nanoparticle (RHA-MNP) which is produced from rice husk ash burned at 300 ∘ C and the magnetic nanoparticle (MNP, Fe 3 O 4 ), was studied. Batch processes were used under different test parameters: pH (2, 4, 6, and 10) and without pH, initial dye concentration (20,40, 60, 80, and 100 mg/L), and contact time (0, 1, 5, 10, 15, 30, 45, 60, 90, and 150 min). Optimum conditions for AR114 removal were found to be at natural pH (pH without correction) for both adsorbents. Freundlich isotherm was found to be more consistent for MNP and Langmuir isotherm was found to be more consistent for RHA-MNP. The maximum adsorption capacities of MNP and RHA-MNP adsorbents for AR114 dye were equal to 111 mg/g. The kinetic experimental data fitted the pseudo-second-order model for both MNP and RHA-MNP. It can be concluded that RHA-MNP which is a waste could be used as low-cost adsorbent to remove AR114 from aqueous solution.

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Removal of copper (II) from aqueous solution by adsorption onto low-cost adsorbents

Cited by 493 publications

References 25 publications

Sustainable conversion of agro-wastes into useful adsorbents

Sustainable conversion of agro-wastes into useful adsorbents

Synthesis, Characterization of Cellulose Modified with 2-Mercaptobenzothiazole and Its Adsorption To Cu(II) Ion in Aqueous Solution

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

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Removal of copper (II) from aqueous solution by adsorption onto low-cost adsorbents

Cited by 493 publications

References 25 publications

Sustainable conversion of agro-wastes into useful adsorbents

Sustainable conversion of agro-wastes into useful adsorbents

Synthesis, Characterization of Cellulose Modified with 2-Mercaptobenzothiazole and Its Adsorption To Cu(II) Ion in Aqueous Solution

Comparison of Acid Red 114 Dye Adsorption by Fe3O4and Fe3O4Impregnated Rice Husk Ash

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Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash