Kinetic studies of copper ion adsorption on palm kernel fibre

The pectin/functionalized silica coated filter paper (FILPSL2) was used for copper ion adsorption. Silica sol (1), prepared by mixing ethanol, water, TEOS and hydrochloric acid, was slowly added into pectin solution. A piece of filter paper (2 cm x 2 cm) was immersed in the silica-pectin solution for 1 hr. The coated filter paper was dried at room temperature and then oven-dried at 50 °C for 6 hrs to obtain FILPS. The silica sol (2) was subsequently prepared by mixing ethanol, water, N-[3-(Trimethoxysilyl) propyl] ethylenediamine (L2) and hydrochloric acid. The FILPS was immersed in silica sol (2) and the coated paper was oven-dried at 50 °C for 6 hrs to obtain FILPSL2. The SEM micrograph of uncoated Filter paper (FIL) and FILPSL2 showsa characteristic woven pattern. For copper ion adsorption, FILPSL2 was put into 0.1 M of CuCl2solution (pH 2, 25 °C). The color of the paper changes from off-white to intense blue within 5 min due to the complex between amino group of functionalized silica and Cu2+ as evidenced from IR spectroscopy.The equilibrium adsorption percentage and adsorption capacity were 27.10 and 5.5 x 10-3 respectively. The concentrations of copper ion solutions were varied to 10-2and 10-3M at this pH. The lower concentration of copper ion results in the higher adsorption percentage. While the lower concentration of copper ion results in the lower adsorption capacity. The adsorption was also experimented at pH 3.The similar trend was obtained. The optimum pH for adsorption for all concentrations was 2. The effect of interferences on the copper ion adsorption depends on the pH. At pH 2, Ni2+ has a stronger effect. While Cd2+ has a stronger effect at pH 3. The desorption was performed using 0.2 M CH3COOH solution. The complete desorption occurred within 30 min.

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Hydroxyapatite modified with silica used for sorption of copper(II)

Chemical Papers ◽

10.2478/s11696-009-0059-x ◽

2009 ◽

Vol 63 (5) ◽

Cited By ~ 21

Author(s):

Erzsébet-Sára Bogya ◽

Réka Barabás ◽

Alexandra Csavdári ◽

Valentina Dejeu ◽

Ioan Bâldea

Keyword(s):

Copper Ions ◽

Copper Ion ◽

Reaction Medium ◽

Kinetic Studies ◽

Sorption Process ◽

Silica Content ◽

Ion Concentration ◽

X Ray Diffraction ◽

Structural Modifications ◽

Preparation Phase

AbstractThis paper aims to increase the sorption capacity of hydroxyapatite and to find the best apatite-based material for metal ions sorption. The sorption process of copper ions from water solutions by HAP and structurally modified HAP was carried out in this work. Structural modifications of HAP were realized in the preparation phase by an addition of sodium silica into the reaction medium. The prepared materials were characterized by physical-chemical methods: IR, electron-microscopy and X-ray diffraction. The composites characterized were tested in kinetic studies regarding ion exchange and adsorption of Cu2+. It was revealed that the silica content, particle size and initial copper ion concentration influence the process rate.

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Ecofriendly Approach for Treatment of Heavy-Metal-Contaminated Water Using Activated Carbon of Kernel Shell of Oil Palm

Materials ◽

10.3390/ma13112627 ◽

2020 ◽

Vol 13 (11) ◽

pp. 2627

Author(s):

Rabia Baby ◽

Mohd Zobir Hussein

Keyword(s):

Heavy Metal ◽

Activated Carbon ◽

Oil Palm ◽

Metal Ion ◽

Agricultural Waste ◽

Palm Kernel ◽

Significant Risk ◽

Contaminated Water ◽

Ion Adsorption ◽

Metal Ion Adsorption

Heavy metal ion contamination in water poses a significant risk to human health as well as to the environment. Millions of tons of agricultural wastes are produced from oil palm plantations which are challenging to manage. In this study, we converted palm kernel shells (PKS) from a palm oil plantation into activated carbon (AC) having a surface area of 1099 m2/g using phosphoric acid as an activator. The prepared material was characterized using BET, XRD, Raman, FESEM and FTIR analyses. The AC was applied for the treatment of heavy-metal-contaminated water, and different parameters; the pH, adsorbent dosage, contact time and metal ion concentrations were varied to determine the optimal conditions for the metal ion adsorption. Different kinetic models; the zeroth, first-order and second-order, and Freundlich and Langmuir isotherm models were used to determine the mechanism of metal ion adsorption by the AC. Under the optimized conditions, Cr6+ and Pb2+ were removed completely, while Zn2+ and Cd2+ were more than 80% removed. This is a greener approach in which an agricultural waste, PKS is converted into a useful product, activated carbon and subsequently applied for the treatment of heavy metal-contaminated water.

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Experimental design technique on removal of hydrogen sulfide using CaO-eggshells dispersed onto palm kernel shell activated carbon: Experiment, optimization, equilibrium and kinetic studies

Journal of Wuhan University of Technology-Mater Sci Ed ◽

10.1007/s11595-017-1597-7 ◽

2017 ◽

Vol 32 (2) ◽

pp. 305-320 ◽

Cited By ~ 14

Author(s):

Abed Habeeb Omar ◽

Kanthasamy Ramesh ◽

A. M. Ali Gomaa ◽

bin Mohd Yunus Rosli

Keyword(s):

Hydrogen Sulfide ◽

Activated Carbon ◽

Experimental Design ◽

Palm Kernel ◽

Kinetic Studies ◽

Design Technique ◽

Palm Kernel Shell

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Equilibrium and Kinetic Studies of Copper Ion Uptake by Calcium Alginate

Environmental Science & Technology ◽

10.1021/es9606790 ◽

1997 ◽

Vol 31 (5) ◽

pp. 1433-1439 ◽

Cited By ~ 76

Author(s):

Jiaping Chen ◽

Fany Tendeyong ◽

Sotira Yiacoumi

Keyword(s):

Calcium Alginate ◽

Copper Ion ◽

Kinetic Studies ◽

Ion Uptake

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N-Doped biochar derived from co-hydrothermal carbonization of rice husk and Chlorella pyrenoidosa for enhancing copper ion adsorption

RSC Advances ◽

10.1039/c6ra09270e ◽

2016 ◽

Vol 6 (59) ◽

pp. 53713-53722 ◽

Cited By ~ 17

Author(s):

Chao Gai ◽

Yanchuan Guo ◽

Nana Peng ◽

Tingting Liu ◽

Zhengang Liu

Keyword(s):

Rice Husk ◽

Copper Ion ◽

Chlorella Pyrenoidosa ◽

Hydrothermal Carbonization ◽

Ion Adsorption ◽

Hydrothermal Environment

Biochar derived from rice husk was modified by microalgae Chlorella pyrenoidosa as a natural nitrogen-rich precursor in a hydrothermal environment for copper ion (Cu(ii)) adsorption.

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