Bioregeneration of granular activated carbon in simultaneous adsorption and biodegradation of chlorophenols

Ultrasonic preparation of nano-nickel/activated carbon composite using spent electroless nickel plating bath and application in degradation of 2,6-dichlorophenol

“…The present method is comparable with other works, especially in terms of treatment time and catalyst dosage (Wang et al, 2012;Shi et al, 2010;Wang et al, 2010;Diaz et al, 2011;Oh et al, 2011).…”

Correlation between microbial diversity and toxicity of sludge treating synthetic wastewater containing 4-chlorophenol in sequencing batch reactors

“…The extensive use of chlorophenols ensures that they can be found in some industrial wastewater (Lim et al, 2013), and are suspected to have carcinogenic and mutagenic characteristics (Lim et al, 2013). 4-CP is usually removed by physical, chemical and biological treatment methods (Lima et al, 2004;Bian et al, 2011;Oh et al, 2011;Elghniji et al, 2012), of which biological treatment is the most promising for completely mineralizing 4-CP. Some microorganisms have the ability to degrade 4-CP after becoming acclimated to it.…”

Treatment of cyanide bearing effluents by adsorption, biodegradation and combined processes: effect of process parameters

“…Degradation of cyanide compounds by fungi such as Fusarium solani, F. oxysporum, Gloeocerocospora sorghi, Fusarium lateritum and Stemphylium loti [17,18] has also been reported. Biodegradation is performed in the presence of microbes either in mobilized or immobilized phase [19]. The immobilization of living microbial cells on a suitable adsorbent improves the removal efficiency [20].…”

“…Recently developed methods dealing with the removal of toxic compounds by adsorption [23] and biological treatment, either operated separately or simultaneously in one unit [24]. In most cases, the presence of both processes in one unit results in a better removal and process performance [19]. Microbial mass can, in some extent, adsorb the substances, but at the same time it also degrades them [24].…”

“…Accordingly, the process is expected to be more stable and the toxic compounds may be converted into less harmful substances [24]. Activated carbon is able to enrich dissolved oxygen; probably this oxygen can also be utilized by micro-organisms adsorbed on activated carbon [19,20].…”