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Sufardi Sufardi,Teti Arabia,Khairullah Khairullah,Karnilawati Karnilawati,Sahbudin Sahbudin,Zainabun Zainabun
Pág. 90 - 101
Soil surface charge and cation exchange are important parameters of soil fertility in tropical soils. This study was conducted to investigate characteristics of surface charges and cation exchanges on four soil orders of the dryland in Aceh Besar d...
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Alvaro D. Sponza, Natalia J. Fernandez, David Yang, Karla A. Ortiz and Abel E. Navarro
Chemical modifications of clay to remove methylene blue (MB) from aqueous solutions at room temperature were compared. Natural bentonite (NC) was modified by cation exchange with hexadecyltrimethylammonium chloride (HC), bencyltriethylammonium chloride (...
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Rodrigo Ortega-Toro, Ángel Villabona-Ortíz, Candelaria Tejada-Tovar, Adriana Herrera-Barros and Daniela Cabrales-Sanjuan
Chemically modified bioadsorbents were prepared using sawdust (Aspidosperma polyneuron) functionalized with urea at different concentrations (BC-1M, BC-3M, and BC-6M) to evaluate their adsorption capacity by the methylene blue method. Fourier transform s...
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Prola Gabil Pindah
Pág. 45
Empty fruit bunch (EFB) was utilized into biochar by pyrolysis and used as adsorbent for malachite green (MG) dye removal. EFB biochar were produced at temperature 300°C, 400°C, 450 °C and 500°C. Characteristics of biochar were characterized by moisture ...
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Pedro César Quero-Jiménez,Lester Alejandro Arias Felipe,Julio Omar Prieto García,María Elisa Jorge Rodríguez,Jorge Basilio de la Torre López,Osvaldo Norman Montenegro,Reinaldo Molina Ruíz,Inés Silvia Tiscornia
Pág. 546 - 556
The physic and chemical characterization of the bentonite clay from the Chiqui Gómez deposit, central Cuba, (Cuban bentonite clay) shows that it is mainly constituted by sodium montmorillonite (>90%), with a structural formula for one-layer unit deter...
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Jean César Marinozi Vicentini, Gabriela Brunosi Medeiros, Maria Clara Chimirri Watanabe, Karen Raiane Piccoli, Fernanda Carla Camilo, Mara Heloisa Neves Olsen Scaliante
Pág. e36553
The present work aims to evaluate the activity of semiconductor oxides (TiO2, Nb2O5 and ZnO) supported on NaA and NaY zeolites, as well as their synergistic effect on Reactive Blue Dye (RB250) photodegradation process. Prior to deposition, TiO2 particles...
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Jean César Marinozi Vicentini, Gabriela Brunosi Medeiros, Maria Clara Chimirri Watanabe, Karen Raiane Piccoli, Fernanda Carla Camilo, Mara Heloisa Neves Olsen Scaliante (Author)
Pág. e36553
The present work aims to evaluate the activity of semiconductor oxides (TiO2, Nb2O5 and ZnO) supported on NaA and NaY zeolites, as well as their synergistic effect on Reactive Blue Dye (RB250) photodegradation process. Prior to deposition, TiO2 particles...
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Daniel Schwantes, Affonso Celso Gonçalves Jr., Alisson Junior Miola, Gustavo Ferreira Coelho, Marcelo Gonçalves dos Santos, Eduardo Ariel Volz Leismann
Pág. 409 - 417
Current study employs solid residues from the processing industry of the cassava (Manihot esculenta Crantz) (bark, bagasse and bark + bagasse) as natural adsorbents for the removal of metal ions Cu(II) and Zn(II) from contaminated water. The first stage ...
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Sedami Tozoun Romain Agassin, Jocinei Dognini and Alexandre Tadeu Paulino
In this work, raw rice husk biochar (RRHB) was investigated for its potential as a valuable industrial byproduct for the decontamination of water using rhodamine B (RB) as a model pollutant. Specific functional chemical groups that were identified in the...
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Affonso Celso Gonçalves Junior, Daniel Schwantes, Elio Conradi Junior, Juliano Zimmermann, Gustavo Ferreira Coelho
Pág. e50263
This study evaluated the use of Euterpe oleracea endocarp after chemical modification with H2O2, H2SO4 and NaOH for the removal of Cd2+, Pb2+ and Cr3+ from water. Therefore, the adsorbent was characterized for its chemical composition, Fourier Transform ...
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Affonso Celso Gonçalves Junior, Daniel Schwantes, Elio Conradi Junior, Juliano Zimmermann, Gustavo Ferreira Coelho (Author)
Pág. e50263
This study evaluated the use of Euterpe oleracea endocarp after chemical modification with H2O2, H2SO4 and NaOH for the removal of Cd2+, Pb2+ and Cr3+ from water. Therefore, the adsorbent was characterized for its chemical composition, Fourier Transform ...
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Giovanni Aleixo Batista, Maria Letícia Martins Silva, Willian de Paula Gomes, Isabelle Cristina Oliveira Neves, Paula Chequer Gouveia Mól, Jaime Vilela de Resende, Lizzy Ayra Alcântara Veríssimo, Jenaina Ribeiro Soares (Author)
Pág. e45914
Whey protein has high biological value and functional properties. Therefore, it is necessary to develop methods to recover this valuable protein and minimize the environmental impacts. Adsorptive processes using alternative adsorbents from agroindustrial...
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Hyeoksun Choi and Sanghwa Oh
The abiotic reduction of NO3- to NO2-?coupled with the oxidation of labile organic materials such as citric acid, syringic acid and natural organic matter (NOM) and NH4+ through the goethite-mediated Fe(III)/Fe(II) cycle under anaerobic condition?was inv...
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Giovanni Aleixo Batista, Maria Letícia Martins Silva, Willian de Paula Gomes, Isabelle Cristina Oliveira Neves, Paula Chequer Gouveia Mól, Jaime Vilela de Resende, Lizzy Ayra Alcântara Veríssimo, Jenaina Ribeiro Soares
Pág. e45914
Whey protein has high biological value and functional properties. Therefore, it is necessary to develop methods to recover this valuable protein and minimize the environmental impacts. Adsorptive processes using alternative adsorbents from agroindustrial...
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Muhammad Usman, Ioannis Katsoyiannis, Manassis Mitrakas, Anastasios Zouboulis and Mathias Ernst
The small sized powdered ferric oxy-hydroxide, termed Dust Ferric Hydroxide (DFH), was applied in batch adsorption experiments to remove arsenic species from water. The DFH was characterized in terms of zero point charge, zeta potential, surface charge d...
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Aurora Romar-Gasalla, Gustavo F. Coelho, Juan Carlos Nóvoa-Muñoz, Manuel Arias-Estévez, María J. Fernández-Sanjurjo, Esperanza Álvarez-Rodríguez and Avelino Núñez-Delgado
Batch-type experiments were used to study As(V), Cr(VI), F-, and Ni2+ sorption/desorption on wheat straw. For the lowest concentration added (0.5 mmol·L-1), the sorption sequence was F- > Ni2+ > Cr(VI) >> As(V) (93%, 61%, 29%, 0.3%), but changed to Ni2+ ...
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Aurora Romar-Gasalla, Gustavo F. Coelho, Juan Carlos Nóvoa-Muñoz, Manuel Arias-Estévez, María J. Fernández-Sanjurjo, Esperanza Álvarez-Rodríguez, Avelino Núñez-Delgado
Pág. 1 - 11
Batch-type experiments were used to study As(V), Cr(VI), F-, and Ni2+ sorption/desorption on wheat straw. For the lowest concentration added (0.5 mmol·L-1), the sorption sequence was F- > Ni2+ > Cr(VI) >> As(V) (93%, 61%, 29%, 0.3%), but changed to Ni2+ ...
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Marius Gheju and Ionel Balcu
Reducing the levels of heavy metals in wastewaters below the permissible limits is imperative before they are discharged into the environment. At the same time, water treatment technologies should be not only efficient, but also affordable. In accordance...
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Agis G. Koumentakos
The maritime industry, among all other industries, is being forced to gradually reduce its emissions. Legislation is one of the tools applying this pressure, and from 1 January 2020, it focuses on the reduction of sulfur percentage in the heavy fuel oil ...
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