Evaluation of activated carbon for remediating benzene contamination: Adsorption and oxidative regeneration

The potential for the use of waste products from a variety of sectors in water treatment processes

“…Thermal regeneration with 170 0.1M NaOH was very effective for regeneration from Pb removal, with removal efficiencies 171 of over 90% after cycling (Itodo et al, 2014). Other activated carbons have been regenerated 172 successfully by electrical-assisted acid washing (Weng et al, 2014), supercritical carbon 173 dioxide operating conditions (Carmona et al, 2014), and pyrite-activated sodium persulfate 174 oxidation (Liang and Chen, 2010). 175…”

Adsorção de fenol e benzeno em montmorilonita modificada com brometo de hexadeciltrimetilamônio

“…Atenção especial tem sido dada nas últimas décadas sobre adsorção de compostos orgânicos, como fenóis que são potenciais contaminantes do lençol freático [10][11][12]. Outros poluentes de grande preocupação global são os compostos orgânicos voláteis, como benzeno [13][14][15]. Esses compostos provocam danos à saúde, principalmente devido à toxicidade e/ou mutagenicidade ou carcinogenicidade.…”

Feasibility study on an oxidant-injected permeable reactive barrier to treat BTEX contamination: Adsorptive and catalytic characteristics of waste-reclaimed adsorbent

“…The first is that the sorbed contaminant was directly degraded by oxidants with catalysis [38], and the second is that as the degradation sites were fundamentally different from the sorption sites, desorption of the sorbed contaminants should have occurred preferentially [28,39]. Liang and Chen [40] proposed that the desorption of sorbed benzene was a primary step for persulfate to oxidize in terms of the process for activated carbon regeneration, but the direct oxidation of sorbed benzene was achieved when catalysis (i.e., FeS 2 ) was added to that system. The present study did not clearly reveal whether the sorbed BTEX was directly degraded or the sorbed BTEX was degraded after desorption.…”