Removal of Hexavalent Chromium from Aqueous Solutions Using Biopolymers

Hassoune, J.; Tahiri, S.; Krati, M. El; Cervera, M. Luisa; Guárdia, Miguel de la

doi:10.1061/(asce)ee.1943-7870.0001396

Cited by 14 publications

(3 citation statements)

References 32 publications

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“…where K L ¼ Langmuir adsorption constant (L/mg), and q m ¼ maximum adsorption capacity (mg/g). The equilibrium adsorption capacity (q e ) is calculated using Equation (3) (Kumar et al 2006;Hassoune et al 2018):…”

Section: Adsorption Studymentioning

confidence: 99%

Surface modification of date seeds (Phoenix dactylifera) using potassium hydroxide for wastewater treatment to remove azo dye

Arunachalam

Chaudhuri

Iype

et al. 2018

Water Practice and Technology

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In this study, a low cost carbon adsorbent was prepared from date seeds. Their surface was modified with potassium hydroxide for use as an adsorbent for the removal of synthetic dye (methyl orange (MO)) from aqueous solutions. The effects of initial MO concentration, adsorbent dosage and temperature were studied. A two-cubed (23) factorial design was carried out on the experimental data, with two replications for the process optimization. The results showed that all three factors and their interactions up to the third order were significant for the removal efficiency of MO. Maximum equilibrium adsorption capacity was 66.26 mg/g at 318 K.

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Section: Adsorption Studymentioning

confidence: 99%

Surface modification of date seeds (Phoenix dactylifera) using potassium hydroxide for wastewater treatment to remove azo dye

Arunachalam

Chaudhuri

Iype

et al. 2018

Water Practice and Technology

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“…Cr (VI) is harmful and carcinogenic even at very small concentrations. Chromium which has a very common areas of usage like armored vehicle, blast furnace bricks, leather, paint, metallurgy, steel industry, has been accumulating in the environment and spreading to the human and aquatic ecosystem and finally creates permanent damages [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Determination of Cr (Vi) in Creeks Discharge to İzmit Gulf (Kocaeli, Turkey)

Oktor¹

2019

Health Sci. Q.

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With increasing industrialization, environmental pollution has become a threat to human health. The heavy metal pollution, especially from industrial waste water, is the best example of this. Chromium holds a special position among living organisms because on its species it can be either essential or toxic. Cr (VI) even at very low concentrations is harmful and carcinogenic, while Cr(III) is a necessary microelement for cellular metabolism. Therefore, it is very important to determine the chromium metal found in the wastewater of leather, paint and iron -steel industries. Four main creeks discharges located in the important industrial area in Kocaeli Province are made to the Gulf of İzmit.In this study, Cr (VI) was measured by the spectrophotometer S.M.3500-Cr B. Calorimetric Method sampled from four main streams Saz, Dil, Narca (Bağ) and Ambar (Ulupınar) Creeks samples and the results were found to be <0.02 mg / L. With these values it is observed that there is a visible improvement in the pollution of the creeks.

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“…Heavy metal pollution of water is more and more serious in some countries, especially in developing countries. 1,2 Among them, attention focused on the possible hazards arising from hexavalent chromium (Cr (VI)) is evident, because of the extensive use of chromium in plating induetries, cooling towers, leather tanning and steel manufacturing. Excessive intake of Cr(VI) or long-term exposure above the maximum contaminant level of Cr(VI) can cause damage to the liver, kidneys, nerve tissue, and even death in large doses.…”

mentioning

confidence: 99%

One-Step Synthesis of AuPdNPs/ERGO Nanocomposite for Enhanced Electrochemical Sensing of Cr(VI) in Water

Liu

Gao

et al. 2018

J. Electrochem. Soc.

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One-step electrochemical approach for synthesis of AuPdNPs/ERGO nanocomposite has been developed for Cr(VI) sensing in water. The bimetallic AuPd nanoparticles and electrochemical reduced graphene oxide (ERGO) composite (AuPdNPs/ERGO) were reduced from H 2 PdCl 4 , HAuCl 4 and GO mixed solution and deposited onto glass carbon electrode (GCE) through cyclic voltammetry, simultaneously. The bimetallic AuPdNPs were homogeneously modified on graphene nanosheets and characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDX) technique. Based on the voltammetric results, the bimetallic AuPdNPs/ERGO/GCE had higher catalytic activity for Cr(VI) determination, compared with AuNPs/GCE, PdNPs/GCE and ERGO/GCE obtained by the same method. The fabricated AuPdNPs/ERGO/GCE shows good relationship in two concentration ranges from 0.05 μM to 5 μM and 5 μM to 1000 μM, with a detection of 0.013 μM (at S/N = 3). In addition, the proposed modified electrode presents high selectivity, sensitivity and stability for Cr(VI) detection and a high recovery of more than 95% was obtained towards real water application, which makes it favorable for the further practical field monitoring.

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Removal of Hexavalent Chromium from Aqueous Solutions Using Biopolymers

Cited by 14 publications

References 32 publications

Surface modification of date seeds (Phoenix dactylifera) using potassium hydroxide for wastewater treatment to remove azo dye

Surface modification of date seeds (Phoenix dactylifera) using potassium hydroxide for wastewater treatment to remove azo dye

Determination of Cr (Vi) in Creeks Discharge to İzmit Gulf (Kocaeli, Turkey)

One-Step Synthesis of AuPdNPs/ERGO Nanocomposite for Enhanced Electrochemical Sensing of Cr(VI) in Water

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