Treatment Technologies For Hazardous Wastes: Part IV A Review of Alternative Treatment Processes for Metal Bearing Hazardous Waste Streams

Novel Ni−Fe-oxide systems for catalytic oxidation of cyanide in an aqueous phase

“…A 10 cm 3 0.1 % iodine solution was titrated (V 2 , cm 3 ) in parallel. The amount of adsorbed iodine was calculated according to formula (1), and the surface area according to formula (2):…”

“…usually contain free and metal complexed cyanides. Considering the acute toxicity of these species for living organisms, the treatment of cyanide wastewaters before they are discharged into the waterways is attracting public and regulatory attention [1,2]. The general waste treatment process is to oxidize the cyanide ions to carbon dioxide and nitrogen where their ease of oxidation maybe very dependent on the concentration of metals and other components in the waste streams.…”

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

“…The recovery of nickel from the SEN plating baths has attracted much attention in terms of environmental protection and economic value. Among various treatment methods such as alkaline precipitation (Grosse, 1986), ion exchange (Levy and Doss, 1987), solvent extraction (Sana et al, 2005), electrodialysis (Kuboi and Takeshita, 1989), electrolysis (Idhayachander and Palanivelu, 2010) and activated carbon adsorption (Madhavakrishnan et al, 2008;Kadirvelu et al, 2001), the adsorption method is obviously convenient, but the expense and resulting acid wastewater used in activated carbon regeneration could restrict its use in industrial-scale spent EN plating bath treatment. Therefore, it is significant to develop an effective nickel recovery technique to the best use of the SEN plating baths.…”

Radiation‐induced graft copolymerization of cellulosic fabric waste and its application in the removal of cyanide and dichromate from aqueous solution

“…[1][2][3] The treatment of cyanide wastes from mining operations, electroplating process, coal gasification and from other industries is attracting public and regulatory attention. 4,5 A number of studies have shown that cellulosic materials can adsorb metallic ions from aqueous and nonaqueous solutions. [6][7][8][9] Through the introduction of functional groups into cellulosic substrates, the adsorptive capacity for metallic ions may be enhanced [10][11][12] or retarded 7 depending on the nature of the ions and the functional groups.…”