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Biochar-supported nanomaterials for environmental applications
Oscar M. Rodriguez-Narvaez,Juan Manuel Peralta-Hernandez,Ashantha Goonetilleke,Erick R. Bandala 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.78 No.-
Immobilizing nanomaterials in highly porous, surface active, structurally stable biochar creates novelnanocomposites that combines the well-known advantages of both materials. The exceptionalcontaminant adsorption and/or catalytic degradation capabilities of these nanocomposites haveattracted the attention of the scientific community for possible use in environmental applications. Thispaper reviews the different methodologies for synthesizing biochar-supported nanomaterials, the keyphysical and chemical characteristics of these nanomaterials, and their performance in environmentalapplications, as well as identifies current knowledge gaps and potential directions for further researchand development.
Electrochemical oxidation of methyl orange azo dye at pilot flow plant using BDD technology
Cecilia Ramırez,Juan M. Peralta-Hernandez,Adriana Saldana,Berenice Hernandez,Roberto Acero,Ricardo Guerra,Sergi Garcia-Segura,Enric Brillas 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.2
Solutions of methyl orange azo dye were degraded by electrochemical oxidation using a 3 L flow plant with a boron-doped diamond (BDD)/stainless steel cell operating at constant current density, ambient temperature and liquid flow rate of 12 L min-1. A 23 factorial design considering the applied current density, azo dye concentration and electrolysis time as variable independents was used to analyze the process by response surface methodology. LC–MS analysis revealed the formation of seven oxidation products from the cleavage of the –N55N– group of the dye, followed by deamination, formation of a nitro group and/or desulfonation of the resulting aromatics.
Adriana Saldana-Robles,Juan M. Peralta-Hernandez,Ricardo Guerra-Sanchez,Manuel I. Maldonado-Rubio 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
This study focused on the application of RSM on the Fenton process and the adsorption of vegetal carbon(VC) to obtain the optimal conditions for the minimization of the colored synthetic wastewater. Methylorange (MO) with an azo dye was used as the model organic compound. Fenton processes wereinvestigated to establish the optimal conditions. The Fe2+/H2O2 ratio was studied to establish the majorMO degradation when 100 and 200 mg/L of MO were treated. For the adsorption process, to determinethe optimal conditions, the principal variables studied were the vegetal carbon mass dosage, degradationtime and dye concentration.