Biogenic Jarosite: A Friendly Adsorbent for the Removal of Chromate from Aqueous Solution

Xiao, Dong; Fang, Chang Ling; Zhou, Jun; Lou, Xiao Yi; Xiao, Jiu Hua; Liu, Jian She

doi:10.4028/www.scientific.net/amm.737.533

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…MamM, MamA and other proteins play an important role for magnetosomes to mature the removal efficiency of Cr(VI), and the adsorption quantity increases with the rise of pH in the range of 2.5-3.2 (Hosokawa et al 2013). Jarosite can absorb a large amount of heavy metal ions including Cr, Hg and Pb, due to the presence of many crystalline chemical locations (Xiao et al 2015). The toxic heavy metal ions can absorb into jarosite and the harmless ions are replaced (Fig.…”

Section: Application Of Jarositementioning

confidence: 99%

Biological materials formed by Acidithiobacillus ferrooxidans and their potential applications

et al. 2020

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A variety of biological materials including schwertmannite, jarosite, iron-sulfur cluster (ISC) and magnetosomes can be produced by Acidithiobacillus ferrooxidans (A. ferrooxidans). Their possible formation mechanisms involved in iron transformation, iron transport, and electron transfer were proposed. The schwertmannite formation usually occurs under the pH of 2.0-3.51, and a lower or higher pH will promote jarosite to be produced. Available Fe 2+ in the environment and the carrier proteins that can transport Fe 2+ to the intracellular membranes of A. ferrooxidans play a critical role in the synthesis of magnetosomes and ISC. The potential applications of these biological materials were reviewed, including removal of heavy metal by schwertmannite, detoxification of toxic species by jarosite, the transference of electron and ripening the iron sulfur protein by ISC, and biomedical application of magnetosomes. Additionally, some perspectives for the molecular mechanisms of synthesis and regulation of these biomaterials were briefly described.

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Section: Application Of Jarositementioning

confidence: 99%

Biological materials formed by Acidithiobacillus ferrooxidans and their potential applications

et al. 2020

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Use of Thermally Modified Jarosite for the Removal of Hexavalent Chromium by Adsorption

et al. 2022

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Jarosites are residues generated during the purification of zinc and are composed mainly of iron sulfates ((Na, K)Fe3(SO4)2(OH)6). Due to the large volume of jarosite generated during the process, these residues tend to be deposited in large land areas and are not used. In the present work, jarosite was used without heat treatment (JST) as an adsorbent of hexavalent chromium contained in a sample of wastewater from a chrome plating industry under the following conditions: C0 = 200 mg/L of Cr, T = 25 °C, and pH = 3. It was only possible to remove 34% of Cr (VI). Subsequently, a thermal treatment of a jarosite sample (JTT) was carried out at 600 °C. The heat-treated sample was later used as an adsorbent in the same conditions as those for JST. The maximum chromium removal was 53%, and the adsorption capacity was 10.99 mg/g. The experimental data were fitted to the Langmuir model and to the pseudo-second-order kinetic model. It was determined that the adsorption process involved electrostatic attractions between the surface of the positively charged adsorbent and the chromium anions contained in industrial wastewater.

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Biogenic Jarosite: A Friendly Adsorbent for the Removal of Chromate from Aqueous Solution

Cited by 2 publications

References 18 publications

Biological materials formed by Acidithiobacillus ferrooxidans and their potential applications

Biological materials formed by Acidithiobacillus ferrooxidans and their potential applications

Use of Thermally Modified Jarosite for the Removal of Hexavalent Chromium by Adsorption

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