2001
DOI: 10.1016/s0304-386x(00)00168-7
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Treatment of rinsing water from electroless nickel plating with a biologically active moving-bed sand filter

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Cited by 35 publications
(13 citation statements)
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“…In a continuous process, Pümpel et al 219 employed metal biosorbing or bioprecipitating bacteria to remove heavy metal from wastewater. The MEtal REmoval by Sand Filter INoculation (MERESAFIN) process is based on the inoculation of a sand filter with metal biosorbing or bioprecipitating bacteria.…”
Section: Treatment Of Gold Mine Wastewatermentioning
confidence: 99%
“…In a continuous process, Pümpel et al 219 employed metal biosorbing or bioprecipitating bacteria to remove heavy metal from wastewater. The MEtal REmoval by Sand Filter INoculation (MERESAFIN) process is based on the inoculation of a sand filter with metal biosorbing or bioprecipitating bacteria.…”
Section: Treatment Of Gold Mine Wastewatermentioning
confidence: 99%
“…Different pH levels were assayed within the range of 3 to 7.5 ± 0.1, which were kept constant along each experiment. It is known that at pH [ 7.7, hydroxide ions (OH -) in solution may bind to Ni(II) ions to form hydroxylated nickel complexes, such as nickel hydroxide, which tend to precipitate in solution [27,28]. Under these pH conditions a combined process of nickel biosorption and microprecipitation occurs in which the latter predominates.…”
Section: Effect Of Ph On Ni(ii) Ion Biosorptionmentioning
confidence: 99%
“…At high pH values, a net negative charge is present on the cell surface, and the ionic state of the ligands like carboxyl, phosphate, sulfhydril, hydroxyl, imidazole and amino groups is such that it favors the reaction with cationic metals. It is well known that at pH values from 4 to approximately 7.5, Ni(II) ions in aqueous solution are present as divalent positive ions that can interact with negatively charged groups in the biomass [16,28]. However, as the pH falls, the overall charge of the cell surface becomes more positive, and positively charged cationic metals cannot therefore approach the surface [16,29].…”
Section: Effect Of Ph On Ni(ii) Ion Biosorptionmentioning
confidence: 99%
“…However, all these works were carried out in simple water synthetic solutions. Real effluents are more complex matrices because they usually have multi-elements and inorganic ligands in competition; these aspects are particularly critical when nickel is one of the metal ions to be removed due to the low affinity of nickel to biomass [4,27].…”
Section: Introductionmentioning
confidence: 99%