Low-cost nanoparticles sorbent from modified rice husk and a copolymer for efficient removal of Pb(II) and crystal violet from water

Chemosphere ◽  
2016 ◽  
Vol 146 ◽  
pp. 253-262 ◽  
Author(s):  
Arameh Masoumi ◽  
Khadijeh Hemmati ◽  
Mousa Ghaemy
Keyword(s):  
Rice Husk ◽  
Crystal Violet ◽  
Low Cost ◽  
Efficient Removal

scholarly journals Kinetic and isotherm modeling of adsorption of dyes onto rice husk carbon

2013 ◽  
Vol 12 (2) ◽  
pp. 190-196 ◽  
Keyword(s):  
Rice Husk ◽  
Crystal Violet ◽  
Low Cost ◽  
First Order ◽  
Pseudo First Order ◽  
Rice Husk Carbon ◽  
Wastewater Samples ◽  
Modeling Of Adsorption ◽  
Kinetic And Isotherm Modeling ◽  
Agitation Time

Rice husk carbon (RHC) has the ability to adsorb the dyestuff from aqueous solution. It may be useful low cost adsorbent for the treatment of effluents, discharged from textile industries. The effectiveness of RHC have been tested for the removal of colour from the wastewater samples containing three dyes namely crystal violet, direct orange and magenta. Effect of various parameters such as agitation time, pH, temperature, adsorbent dose and concentration have been investigated in the present study. The adsorption of dyes have been best described by pseudo first order mechanism and Freundlich adsorption isotherms. The rate constant of adsorption (Kad) have been determined, which are found to be 6.8 x 10–3, 8 x 10–3 and 10 x 10–3 min–1 for crystal violet, direct orange and magenta respectively. Similarly the Freundlich constants related to the adsorption capacity (Kf) are found to be 0.74, 0.44 and 0.68 g l–1 and intensity of adsorption (n) are found to be 0.41, 0.73 and 0.33 mg g–1 for above dyes respectively.

scholarly journals Efficient removal of crystal violet dye using EDTA/graphene oxide functionalized corncob: a novel low cost adsorbent

RSC Advances ◽  
2019 ◽  
Vol 9 (38) ◽  
pp. 21996-22003 ◽  
Author(s):  
Huan Wang ◽  
Xin Lai ◽  
Wei Zhao ◽  
Youning Chen ◽  
Xiaoling Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Crystal Violet ◽  
Low Cost ◽  
Tetraacetic Acid ◽  
Efficient Removal ◽  
Immersion Method ◽  
Ethylenediamine Tetraacetic Acid ◽  
Crystal Violet Dye

In this study, crystal violet dyes were adsorbed by EDTA functionalized corncob (EDTA-corncob) and EDTA/graphene oxide functionalized corncob (EDTA-GO/corncob), which were prepared using disodium ethylenediamine tetraacetic acid and the graphene oxide immersion method.

scholarly journals Adsorption of Rare Earth Elements from Aqueous Solutions Using Geopolymers

Proceedings ◽  
2018 ◽  
Vol 2 (10) ◽  
pp. 567 ◽  
Author(s):  
Željka Fiket ◽  
Ana Galović ◽  
Gordana Medunić ◽  
Martina Furdek Turk ◽  
Maja Ivanić ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Aqueous Solutions ◽  
High Efficiency ◽  
Low Cost ◽  
Coal Ash ◽  
Industrial Sector ◽  
Efficient Removal ◽  
Model Solutions ◽  
Technology Applications

Rare earth elements, i.e., lanthanides, are important components of many recently developed technology applications. However, their increasing use in the industrial sector, medicine, and agriculture over the last few decades has provided them with the title of “new pollutants”. Different methods are now applied for the removal of various pollutants from wastewaters, whereby the emphasis is placed on adsorption due to its simplicity, high efficiency, and low cost. In the present study, geopolymers prepared from coal ash were examined regarding their capacity for the adsorption of lanthanides from model solutions. The obtained results indicate the efficient removal of lanthanides by prepared geopolymers, depicting them as effective adsorbents for this group of elements.

scholarly journals Efficient removal of crystal violet dye from aqueous solutions by vitreous tuff mineral

2014 ◽  
Vol 35 (12) ◽  
pp. 1508-1519 ◽  
Author(s):  
A. Blanco-Flores ◽  
A. Colín-Cruz ◽  
E. Gutiérrez-Segura ◽  
V. Sánchez-Mendieta ◽  
D.A. Solís-Casados ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Crystal Violet ◽  
Efficient Removal ◽  
Crystal Violet Dye

Empirical Equilibrium Study on Rice Husk and Eggshells as Low Cost Bioadsorbent for the Methylene Blue Removal

2014 ◽  
Vol 699 ◽  
pp. 221-226
Author(s):  
Nurul Hanim Razak ◽  
Md. Razali Ayob ◽  
M.A.M. Zainin ◽  
M.Z. Hilwa
Keyword(s):  
Methylene Blue ◽  
Rice Husk ◽  
Low Cost ◽  
Agricultural Waste ◽  
Textile Wastewater ◽  
Blue Dye ◽  
Rice Husks ◽  
Equilibrium Study ◽  
Porosity Characterization

Eggshells and rice husk, two types of notable agricultural waste were used as bioadsorbent to remove Methylene Blue dye (MBD) in aqueous solution. This study was to investigate the performance of these two bioadsorbents in removing MBD. The removal percentage, adsorption capacity, and porosity characterization were examined. The method applied was a physical filtration. UV-VIS Spectrophotometer was used to determine the efficiency of the bioadsorbents in MBD adsorption. The highest removal percentage at the most concentrated MBD were 51% and 98% for eggshells and rice husks respectively. Meanwhile the characterization of rice husks pore size and volume proves that higher adsorptivity towards dye compares to eggshells porosity. It was concluded that the eggshells and rice husks bioadsorbents was successful to treat industrial textile wastewater with rice husks as the most efficient bioadsorbent in removing MBD.

scholarly journals Bioremediation of organic dyes using combination of plants ash

2019 ◽  
Vol 7 (2) ◽  
pp. 240-246
Author(s):  
Kaur Harpreet ◽  
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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