Biosorption of Cr(VI) from aqueous solution by chemically modified potato starch: Equilibrium and kinetic studies

Pillai, Saumya S.; Mullassery, Manohar D.; Fernandez, Noeline B.; Girija, N.; Geetha, P.; Koshy, M M

doi:10.1016/j.ecoenv.2013.01.020

Cited by 70 publications

(49 citation statements)

References 33 publications

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“…Adsorbent was thoroughly mixed with 50 cm 3 Following each adsorption experiment, the suspension containing adsorbent and the above standard solution was filtered through a 0.1 μm membrane filter (Advantec Mixed Cellulose Ester, 47 mm) to remove Cr(VI) that have been adsorbed into the adsorbent, and the concentration of this metal in the filtrate was determined with an ICP-AES (inductively coupled plasma-atomic emission spectroscopy).…”

Section: Adsorption Experiments For Cr Using Chitosan and Zchcmentioning

confidence: 99%

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Adsorption of Chromium (VI) from Aqueous Solution Using Zeolit/Chitosan Hybrid Composite

Pang¹,

Kano²,

Inoue³

2015

JCCE

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This study investigated the adsorption ability of ZCHC (zeolite/chitosan hybrid composite) as adsorbent for chromium (Cr(VI)), ZCHC was prepared with sol-gel method by mixing zeolite and chitosan. Adsorption experiment from aqueous solutions containing known amount of Cr(VI) using zeolite, chitosan and ZCHC was explored to evaluate the efficiency of ZCHC as adsorbent for Cr in a batch system. The amount of Cr(VI) adsorbed at different pH values, initial concentrations, adsorbent dosages, and contact times were determined by ICP-AES (inductively coupled plasma-atomic emission spectrometry) in order to determine the optimum conditions for Cr(VI) adsorption. Furthermore, the adsorption mechanism of Cr(VI) by zeolite, chitosan and ZCHC was investigated by applying Langmuir and Freundlich isotherm equations to the data obtained. In addition, the rates of adsorption were found to conform to pseudo-second order kinetics.

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Section: Adsorption Experiments For Cr Using Chitosan and Zchcmentioning

confidence: 99%

“…Heavy metals are considered to be potentially hazardous and can cause physiological and neurological disorders [3][4][5].…”

mentioning

confidence: 99%

Adsorption of Chromium (VI) from Aqueous Solution Using Zeolit/Chitosan Hybrid Composite

Pang¹,

Kano²,

Inoue³

2015

JCCE

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“…Chromium berada di lingkungan dalam bentuk trivalen [Cr(III)] dan heksavalen [Cr(VI)] yang dianggap sangat beracun, karsinogenik, dan mutanogenik (Chen et al, 2011;Pillai et al, 2013). Ion Cr memberikan efek physiology bagi manusia dengan cara terakumulasi dalam rantai makanan dan menyebabkan berbagai penyakit seperti dapat menyebabkan kerusakan hati, ginjal, pendarahan di dalam tubuh, kerusakan saluran pernafasan dan kanker paru-paru (Venugopal & Mohanty, 2011).…”

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“…Walaupun banyak metoda untuk mengolah air limbah yang mengandung logam berat, seperti presipitasi, pertukaran ion, dan membrane filtration, namun adsorpsi merupakan salah satu metoda yang dinilai ekomomis dan ecofriendly untuk menghilangkan Cr dari dalam air limbah. Seperti penelitian adsorpsi Cr menggunakan biomassa dari limbah pertanian corn stalks (Chen et al, 2011), potato starch (Pillai et al, 2013), tumbuhan gulma Parthenium hysterophorus (Venugopal et al, 2011), tumbuhan gulma Alligator (Wang et al 2009), Biji Asam jawa (biji tamarind) dan Serbuk gergaji (Gupta & Babu, 2009adan 2009b, cornelian cherry dan kulit biji almond (Demirbas et al, 2004), daun casuarinas (Ranganathan, 2000). Begitu juga beberapa penelitian menggunakan adsorben dari limbah lumpur juga telah banyak dilakukan seperti penelitian pemanfaatan limbah lumpur sebagai penyerap logam Cr dalam larutan antara lain untuk ion Cr(III) (Liu et al, 2011;Iddou&Quali, 2008), dan Cr(VI) (Wu et al, 2010;Gorzin et al, 2013), serta beberapa penelitian menggunakan lumpur dari sumber yang berbeda seperti diantaranya clarifield sludge dari industri baja (Bhattacharya, 2008), limbah lumpur pengolahan air limbah kota (Wu et al, 2010;Yang et al, 2010), limbah lumpur pabrik tekstil (Hunsom et al, 2013), pabrik kosmetik (Monsalvo et al 2012), pabrik sawit (Zaini et al, 2013), dan pabrik susu (Iddou & Quali, 2008;Benaïssa & Elouchdi, 2011 (Salmariza, 2012;.…”

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Adsorbsi Ion Cr (VI) Menggunakan Adsorben dari Limbah Padat Lumpur Aktif Industri Crumb Rubber

et al. 2016

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ABSTRAKPenelitian tentang adsorbsi ion Cr(VI) dengan menggunakan adsorben dari limbah padat lumpur aktif industri crumb rubber telah dilakukan dengan metode statis (batch). Sampel yang digunakan adalah limbah padat lumpur aktif industri crumb rubber segar dan lumpur yang dikarbonisasi serta diaktivasi dengan KOH. Parameter yang dipelajari yaitu pH awal larutan, waktu kontak, dan konsentrasi ion Cr(VI). Hasil penelitian menunjukan bahwa limbah padat lumpur aktif industri crumb rubber mengandung silika dan alumina yang tinggi yaitu 49,0% dan 16,5%, sehingga dapat digunakan sebagai adsorben. pH optimum adsorben untuk lumpur diaktivasi yaitu pada pH 1 dan lumpur segar pada pH 2. Waktu kontak optimum yaitu 120 menit dan konsentrasi ion Cr(VI) optimum 70 mg/L untuk masingmasing adsorben. Data sesuai dengan isotherm Langmuir dengan kapasitas serapan maksimum terhadap ion Cr(VI) 2,075 mg/g untuk adsorben lumpur diaktivasi dengan KOH dan 2,232 mg/g untuk adsorben lumpur segar. Kata Kunci: Adsorpsi, limbah lumpur aktif, industri crumb rubber, ion Cr(VI), isotherm Langmuir ABSTRACT Research on ion Cr(VI) adsorption by using adsorbent from waste activated sludge crumb rubber industry has been done with static method (batch

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“…Those metals are considered to be potentially hazardous and can cause physiological and neurological disorders [1]. Out of the various toxic pollutants chromium and its compounds are considered as the most dangerous inorganic water pollutants.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and isotherm studies on the adsorption of hexavalent chromium onto phosphoric acid activated Mimusops elengi leaves carbon

Nandhakumar¹,

A²,

Chandramohan³

et al. 2017

Int. J. Curr. Res. Chem. Pharm. Sci

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Hexavalent chromium [(Cr (VI))] ion is toxic and therefore, its removal from wastewater is extremely important. This study re ports on the adsorption of Hexavalent Chromium from aqueous solutions using activated carbon prepared from leaves of Mimusops elengi by phosphoric acid activation. Adsorption experiments were carried out in a batch process with various experimental parameters such as effect of contact time, initial chromium ion concentration, carbon dosage and pH. Kinetics of the system was studied with linearised forms of Lagergren, Ho and Webber Morris models. Equilibrium data were fitted with Langmuir, Freundlich, Temkin and Dubinin-Raduskevich isotherms.

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Biosorption of Cr(VI) from aqueous solution by chemically modified potato starch: Equilibrium and kinetic studies

Cited by 70 publications

References 33 publications

Adsorption of Chromium (VI) from Aqueous Solution Using Zeolit/Chitosan Hybrid Composite

Adsorption of Chromium (VI) from Aqueous Solution Using Zeolit/Chitosan Hybrid Composite

Adsorbsi Ion Cr (VI) Menggunakan Adsorben dari Limbah Padat Lumpur Aktif Industri Crumb Rubber

Kinetics and isotherm studies on the adsorption of hexavalent chromium onto phosphoric acid activated Mimusops elengi leaves carbon

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