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Luca M. Ofiera, Purnendu Bose and Christian Kazner
Constructed wetlands are a versatile technology for various treatment approaches, especially in emerging countries. The research aims to study and optimize the hybridizing process of a vertical subsurface flow constructed wetland with adsorption technolo...
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Khizar Hussain Shah, Noor S. Shah, Gul Afshan Khan, Sadaf Sarfraz, Jibran Iqbal, Aneeqa Batool, Ahmad Jwuiyad, Shabnam Shahida, Changseok Han and Monika Wawrzkiewicz
This study focuses on investigating and comparing the influence of the surface functional groups and chemical matrices of macroporous resin on the Cr(III) exchange mechanism. The results discussed herein indicate that sulfonic resin removed Cr(III) ions ...
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Fernanda Martins Queiroz, Aline de Fátima Santos Bugarin, Victor Hugo Ayusso, Maysa Terada and Isolda Costa
The AA 2198-T851 is a third-generation Al-Li alloy developed for use in the aircraft industry. Al-Li alloys are susceptible to localized corrosion due to their complex microstructure resulting from the used thermomechanical treatment. In order to prevent...
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Wei Song, Jian Xu, Lepeng Gao, Qingzhu Zhang, Jin Tong and Lili Ren
Novel porous chitosan microspheres were successfully produced by a freezing?lyophilization drying method in this study and were then used as adsorbents to remove a toxic iron metal, hexavalent chromium (Cr(VI)). The effects of the concentration of the ch...
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Sicele L. A. Gonçalves, Eric M. Garcia, Hosane A. Tarôco and Tulio Matencio
The recycling of exhausted lithium-ion batteries from mobile phones originate five solutions with different Co and Mn proportions that were used as electrolytic solutions to obtain Mn-Co spinel coatings on the surface of AISI430 stainless steel. The coat...
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Marius Gheju
Hexavalent chromium (CrVI) compounds are used in a variety of industrial applications and, as a result, large quantities of CrVI have been released into the environment due to inadequate precautionary measures or accidental releases. CrVI is highly toxic...
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Muhammad Naeem Iqbal, Asfa Ashraf
Pág. 14 - 15
EDITORIALEnvironmental pollution arising from heavy metals and minerals in the wastewater is the most serious problem. Due to extensive anthropogenic activities such as industrial operations particularly mining, agricultural processes and disposal of ind...
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Márcia Teresinha Veit, Gilberto da Cunha Gonçalves, Marcia Regina Fagundes-Klen, Edson Antonio da Silva, Celia Regina Granhen Tavares, Jacqueline Ferandin Honorio
Pág. 429 - 435
The biosorption process with algae is usually carried out with a concomitant alginate leaching process. Alginate is identified as the main functional group, responsible for generating the most active sites. Biomass chemical and thermal pretreatment is an...
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Maria Angélica Simões Dornellas de Barros, Andreia Soares Zola, Indianara Conceição Ostroski, Pedro Augusto Arroyo, Célia Regina Granhen Tavares, Eduardo Falabella Sousa-Aguiar
Pág. 279 - 286
In this paper the removal of chromium from Cr/Ca/Mg/K and Cr/Ca/Mg/K/Na solutions was investigated in NaX and NaY packed beds. The breakthrough curves presented some overshooting phenomena where chromium ions displaced the previous exchanged cations. Len...
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Maria Angélica Simões Dornellas de Barros, Andréia Soares Zola, Pedro Augusto Arroyo, Eduardo Falabella Sousa-Aguiar, Célia Regina Granhen Tavares (Author)
Pág. 1619 - 1625
In this paper, the chromium uptake in zeolites NaA and NaX was investigated in equilibrium condition and in dynamic systems at 30oC. The separation factors, obtained from the equilibrium data, were very similar to the isotherms Cr-NaA e Cr-NaX, which ind...
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