Adsorption of roxarsone from aqueous solution by multi-walled carbon nanotubes

Adsorption of roxarsone by iron (hydr)oxide-modified multiwalled carbon nanotubes from aqueous solution and its mechanisms

“…High adsorption capacity and reversible adsorption of roxarsone by iron-modified MWCNTs show that this material can be recycled as an adsorbent in water and wastewater treatments. However, the high adsorption capacity and no obvious desorption hysteresis also imply the high environmental risk, because the adsorption and desorption process affects the fate and toxicity of adsorbates in the environment (Hu et al 2012). The easy desorption of roxarsone from environmental matrices could cause a real threat for the organisms when the desorbed roxarsone enters the environment (Oleszczuk et al 2009).…”

“…A series of researches have been carried out to remove inorganic arsenic from aqueous environmental systems (Daus et al 2004;Deschamps et al 2005;Jegadeesan et al 2010), however, the studies reported on the removal of organic arsenic species are very limited (Lim et al 2009;Hu et al 2012), especially for roxarsone. The objective of this study is to investigate the adsorption and desorption processes of roxarsone by iron-modified MWCNTs and their possible mechanisms, which would provide a sound solution for the treatment of roxarsone and other organoarsenic-contaminated wastewater.…”

Effect of arsanilic acid on anaerobic methanogenic process: Kinetics, inhibition and biotransformation analysis

“…There were 800-1000 tons of arsanilic acid being consumed every year in the United States, and the leaching and runoff resulted in the release of arsanilic acid and its metabolites from manure into water body and soil, causing the risk of arsenic contamination [5]. Adsorption removal of organoarsenic from aqueous solution has been reported in the previous references [6,7].…”

Novel magnetic NiFe2O4/multi-walled carbon nanotubes hybrids: Facile synthesis, characterization, and application to the treatment of dyeing wastewater

“…Due to high aspect ratio, large accessible external surface area, well developed mesopores and layered structures, CNTs have been proven to possess a great potential as photocatalyst to chemically oxidize organic pollutants or as superior adsorbents for removing many kinds of organic and inorganic contaminants from aqueous solutions [14][15][16][17][18]. Therefore, an upcoming application domain of CNTs is water purification [13].…”