Treatment of rinsing water from electroless nickel plating with a biologically active moving-bed sand filter

Pumpel, T; Ebner, C; Pernfuss, B; Schinner, F; Diels, L; Keszthelyi, Z; Stankovic, A; Finlay, JA; Macaskie, LE; Tsezos, M; Wouters, H

dc.contributor.author	Pumpel, T	en
dc.contributor.author	Ebner, C	en
dc.contributor.author	Pernfuss, B	en
dc.contributor.author	Schinner, F	en
dc.contributor.author	Diels, L	en
dc.contributor.author	Keszthelyi, Z	en
dc.contributor.author	Stankovic, A	en
dc.contributor.author	Finlay, JA	en
dc.contributor.author	Macaskie, LE	en
dc.contributor.author	Tsezos, M	en
dc.contributor.author	Wouters, H	en
dc.date.accessioned	2014-03-01T01:17:17Z
dc.date.available	2014-03-01T01:17:17Z
dc.date.issued	2001	en
dc.identifier.issn	0304-386X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14437
dc.subject	sand filter	en
dc.subject	nickel recovery	en
dc.subject	biosorption	en
dc.subject	bioprecipitation	en
dc.subject	bacteria	en
dc.subject	galvanic waste water	en
dc.subject	bioremediation	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.other	Biological filter beds	en
dc.subject.other	Biomass	en
dc.subject.other	Electroless plating	en
dc.subject.other	Nickel plating	en
dc.subject.other	Sand	en
dc.subject.other	Biologically active moving-bed san filters	en
dc.subject.other	Rinsing water	en
dc.subject.other	Biological water treatment	en
dc.title	Treatment of rinsing water from electroless nickel plating with a biologically active moving-bed sand filter	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0304-386X(00)00168-7	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0304-386X(00)00168-7	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	The MERESAFIN (MEtal REmoval by SAnd Filter INoculation) process presented here was designed to combine the optimum conditions for more than one of the well-known processes of biological metal immobilisation like biosorption and bioprecipitation in a treatment system for industrial waste water. The approach makes use of a continuously operated moving-bed Astrasand(R) filter which has been inoculated with a mixed population of selected metal biosorbing, bioprecipitating and biodegrading bacteria. One of four pilot plants has been erected at a metal plating company in Vienna (A) to treat waste water from an electroless nickel plating line. In addition to several mg/L of nickel the rinsing water also contains organic acids and inorganic phosphates, which make conventional treatment difficult. Metal laden biomass is continuously removed from the sand grains in the filter and settled in a lamella separator. The thickened biosludge contained 2% of Ni (at only 2-5 mg/L in the feed water), which could be recycled in a shaft furnace. Regeneration of biofilms on the sand is achieved by dosing a cheap carbon source; all other nutrients are available from that specific waste water. For the removal of 0.8 mg/L of nickel the biofilms consumed 8 mg carbon/L and, in addition to 8 mg/L of dissolved oxygen, 3.4 mg NO3-N/L as additional electron acceptor. The process was shown to be economically favourable over comparable conventional techniques of metal removal. A further advantage of the biological system is its ability to cleave organo-metal complexes (e.g. nickel lactate in the presented case), to degrade organic molecules like organic acids, surface active substances, etc., often present in industrial waste waters, or to reduce ammonium, nitrite and nitrate. Proposed areas of application comprise the final polishing of industrial and mining water, but also the full treatment of contaminated ground water or drainage water. (C) 2001 Elsevier Science B.V. All rights reserved.	en
heal.publisher	Elsevier Science Publishers B.V., Amsterdam, Netherlands	en
heal.journalName	Hydrometallurgy	en
dc.identifier.doi	10.1016/S0304-386X(00)00168-7	en
dc.identifier.isi	ISI:000166516200026	en
dc.identifier.volume	59	en
dc.identifier.issue	2-3	en
dc.identifier.spage	383	en
dc.identifier.epage	393	en