Preparation of low cost activated carbon from Myrtus communis and pomegranate and their efficient application for removal of Congo red from aqueous solution

Activated carbons were prepared from Lapsi seed stone by the treatment with H2SO4 and HNO3 for the removal of Ni (II) ions from aqueous solution. Two activated carbon have been prepared from Lapsi seed stones by treating with conc.H2SO4 and a mixture of H2SO4 and HNO3 in the ratio of 1:1 by weight for removal of Ni(II) ions. Chemical characterization of the resultant activated carbons was studied by Fourier Transform Infrared Spectroscopy and Boehm titration which revealed the presence of oxygen containing surface functional groups like carboxyl, lactones and phenols in the carbons. The optimum pH for nickel adsorption is found to be 5. The adsorption data were better fitted with the Langmuir equations than Freundlich adsorption equation to describe the equilibrium isotherms. The maximum adsorption capacity of Ni (II) on the resultant activated carbons was 28.25.8 mg g-1 with H2SO4 and 69.49 mg g-1 with a mixture of H2SO4 and HNO3. The waste material used in the preparation of the activated carbons is inexpensive and readily available. Hence the carbons prepared from Lapsi seed stones can act as potential low cost adsorbents for the removal of Ni (II) from water. DOI: http://dx.doi.org/10.3126/jie.v9i1.10680Journal of the Institute of Engineering, Vol. 9, No. 1, pp. 166–174

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Removal of Orange G Dye from Aqueous Solution by Adsorption: A Short Review

Journal of Environmental Treatment Techniques ◽

10.47277/jett/9(1)327 ◽

2020 ◽

Vol 9 (1) ◽

pp. 318-327

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Low Cost ◽

Short Review ◽

Industrial Wastes ◽

Present Review ◽

Wastewater Remediation ◽

Experimental Conditions ◽

Adsorption Capacities ◽

Orange G

Adsorption is a widely used technique for wastewater remediation. The process is effective and economical for the removal of various pollutants from wastewater, including dyes. Moreover, Besides commercial activated carbon, different low-cost materials such as agricultural and industrial wastes are now used as adsorbents. The present review focused on the removal of a teratogenic and carcinogenic dye, orange G (OG) via adsorption using several adsorbents, together with the experimental conditions and their adsorption capacities. Based on the information compiled, various adsorbents have shown promising potential for OG removal.

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Bioremediation of organic dyes using combination of plants ash

Foods and raw materials ◽

10.21603/2308-4057-2019-1-240-246 ◽

2019 ◽

Vol 7 (2) ◽

pp. 240-246

Author(s):

Kaur Harpreet ◽

Vandana Kamboj ◽

Vandana Kamboj

Keyword(s):

Aqueous Solution ◽

Methylene Blue ◽

Methyl Orange ◽

Crystal Violet ◽

Congo Red ◽

Organic Dyes ◽

Low Cost ◽

Sem Image ◽

Orange Peels

Water is the most crucial thing to mankind and so its contamination by various agencies is posing a threat to the natural balance. So, in the present work, the efficiency of various adsorbents derived from plant waste, to remove different dyes from aqueous solution was evaluated. Parameters for study were contact time, concentration and pH. Various combinations of plant ashes were used for the study. It was found that adsorbent prepared from the combination of orange peels, pomegranate and banana peels ashes, exhibited good adsorption capacity for methylene blue, congo red and crystal violet. All these dyes were completely removed from the aqueous solution while methyl orange was not removed. Congo red was removed completely within 40 min of contact with the adsorbent while methyl orange took 3 hrs to be removed to the extent of 48% only. The adsorption coefficient of congo red was found to be 2.33 while value for methylene blue and crystal violet was 1 and 1.66 respectively. The characterization of adsorbent was done by Scanning Electron Microscopy and IR spectroscopy. SEM image revealed the surface of adsorbent to be made of differential pores. From the results it became evident that the low-cost adsorbent could be used as a replacement for costly traditional methods of removing colorants from water.

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Removal of azo dye from aqueous solution by a low-cost activated carbon prepared from coal: adsorption kinetics, isotherms study, and DFT simulation

Environmental Science and Pollution Research ◽

10.1007/s11356-020-11344-4 ◽

2020 ◽

Author(s):

Saeed Ullah Jan ◽

Aziz Ahmad ◽

Adnan Ali Khan ◽

Saad Melhi ◽

Iftikhar Ahmad ◽

...

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Adsorption Kinetics ◽

Azo Dye ◽

Low Cost ◽

Dft Simulation

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Adsorptive Removal of Pb(II) Ion from Aqueous Solution Using Rice Husk-Based Activated Carbon

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.875-877.196 ◽

2014 ◽

Vol 875-877 ◽

pp. 196-201 ◽

Cited By ~ 1

Author(s):

Mohd Faisal Taha ◽

Ahmad S. Rosman ◽

Maizatul S. Shaharun

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Rice Husk ◽

Low Cost ◽

Chemical Activation ◽

Textural Properties ◽

Activation Process ◽

Adsorption Studies ◽

Three Samples ◽

Equilibrium Data

The potential of rice husk-based activated carbon as an alternative low-cost adsorbent for the removal of Pb (II) ion from aqueous solution was investigated. Rice husk-based activated carbon was preparedviachemical activation process using NaOH followed by the carbonization process at 500°C. Morphological analysis was conducted using field-emission scanning electron microscope /energy dispersive X-ray (FESEM/EDX) on three samples, i.e. raw rice husk, rice husk treated with NaOH and rice husk-based activated carbon. These three samples were also analyzed for their C, H, N, O and Si contents using CHN elemental analyzer and FESEM/EDX. The textural properties of rice husk-based activated carbon, i.e. surface area (253 m2/g) and pore volume (0.17 cm2/g), were determined by N2adsorption. The adsorption studies using rice husk-based activated carbon as an adsorbent to remove Pb (II) ion from aqueous solution were carried out at a fixed initial concentration of Pb (II) ion (150 ppm) with varying adsorbent dose as a function of contact time at room temperature. The concentration of Pb (II) ion was determined by atomic absorption spectrophotometer (AAS). The removal of Pb (II) ion from aqueous solution increased from 35 % to 82 % when the amount of rice husk-based activated carbon was increased from 0.05 g to 0.30 g. The equilibrium data obtained from adsorption studies was found to fit both Langmuir and Freundlich adsorption isotherms.

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