Use of an electric field‐assisted biosorption process in the removal of hazardous or precious ionic species from wastewater streams

Abstract

Use of an electric field-assisted biosorption system to remove and recover toxic or precious entities from solution is described. The biosorbent materials are housed in a membrane-enclosed space together with an electrode and a counter electrode is placed in the external solution containing the relevant sorbate. The system is shown to be capable of removing toxic entities such as Cd, Cs, Cu and Cr from solution and additionally is shown to be capable of recovering precious species such as Ag and Pt from relatively dilute solutions. In addition, the potential diversity of application of the system is demonstrated by the efficient sequestration of hazardous organic entities such as glyphosate and phthalate from dilute solutions.

Electronics and Metal Finishing and Processing

“…It was noted that 90% of the adsorption took place within the first five minutes. The batch data was best modeled using the Nomikou et al (2006) utilized an electric fieldassisted biosorption system to remove and recover Cd, Cs, Cu, and Cr from solution and were able to achieve high levels of separation.…”

Kinetic Study of Malathion Biosorption Using Dry Cells of an Isolated Bacillus sp. S14

“…One of the efficient alternative techniques for removing pesticides from contaminated water samples is biosorption. As an alternate approach, biosorption has been utilised to eliminate hazardous contaminants from water samples [12][13][14][15][16]. According HISTORY to research conducted by the United States Geological Survey, more than 90% of the water and fish samples gathered from major rivers or streams were contaminated with pesticides.…”

Electro-biosorptive accumulation for use in enhanced detection of fluorogenic tracers and the removal of toxic entities from dilute solutions

“…Biosorption processes may be exploited in the removal of organic entities such as textile dyes from effluent streams (Bustard et al 1998). Additionally, the removal of a pesticide and a model phthalate compound from aqueous environments using a modified biosorption process aided by an electric field has been described (Nomikou et al 2006). Recently however, the focus on organic pollutants has shifted in the direction of chemicals such as pharmaceuticals or pharmaceutical derivatives that may be present in the environment at extremely low concentrations yet present a significant threat as a result of accumulation in biological systems (Jones et al 2005;Fent et al 2006).…”