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An experience gained in the closed aluminum smelter in Sibenik (Croatia) is described in order to highlight possible similar problems anywhere in the world, when commercial wet-scrubber, designed for fresh water, is used in an unconventional seawater environment. Lime treatment process was used to remove fluoride as an insoluble calcium fluoride. Wet-scrubbing in real system is compared with that in model system, using the SOLGASWATER program (ERICSSON, 1979) for heterogeneous equilibria. It is shown that chemical modelling can help to control the wet-scrubbing process and thus to avoid the undesirable breaking of pipelines. The removal of fluoride at pH 5.4 in the form of insoluble cryolite, using lime slurry process and seawater in recirculation, is suggested to be an alternative to precipitation of calcium fluoride. Environmental consequences of partial discharging aluminum and fluoride into the marine environment are discussed in comparison with ecosystem response to volcanic aerosol.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
249--257
Opis fizyczny
bibliogr. 15 poz.
Twórcy
autor
- Institute "Ruder Boskovic", POB 180, HR-10002 Zagreb, Croatia, bilinski@irb.hr
Bibliografia
- [1] Alusuisse patent in Yugoslavia, No. 22964, Hallenabluftreinigung.
- [2] ANTIA N.J., KLUT M.E., Fluoride addition effects on curyhaline phytoplankter growth in nutrientenriched seawater at an estuarine level of salinity, Bot. Mar., 1981, 24, 147–152.
- [3] BAALINA A., RODRIGUEZ E., SANTABALLA J.A., ARCE A., Acidity of effluent from intert gas systems using seawater scrubbing, Environmental Technology, 1996, 17(3), 331–335.
- [4] BAALINA A., RODRIGUEZ E., SANTABALLA J.A., ARCE A., Prediction of the acidity of effluent from fluegas scrubbers using seawater, Environmental Technology, 1997, 18(5), 545–550.
- [5] BILINSKI H., RADULOVIĆ D., SJÖBERG S., INGRI N., Model studies of the inorganic fluoride and aluminum in the polluted coastal environment in the vicinity of a large aluminum smelter, Abstract, Rapp. Comm. Int. Mer. Medit., 1983, 28, 163–164.
- [6] BILINSKI H., MATKOVIĆ B., KRALJ D., RADULOVIĆ D., VRANKOVIĆ V., Model experiments with CaO, MgO and calcinated dolomite for fluoride removal in a wet scrubbing system with sea water in recirculation, Water Research, 1984, 19, 163–168.
- [7] BILINSKI H., RADULOVIĆ D., Difficulties in the functioning of the device for wet scrubbing of gases in the electrolysis of aluminum with regard to possible environmental problems (In Croatian), Kemija u Industriji, 1985, 34(5), 327–332.
- [8] Critical Stability Constants, Compliers R.M. Smith and A.E. Martell, Vol. 4: Inorganic Complexes. Plenum Press, New York, London, 1976.
- [9] ERIKSSON G., An algorithm for the computation of aqueous multicomponent multiphase equilibria, Analytica Chimica Acta, 1979, 112, 375–383.
- [10] FROGNER KOCKUM P.C., HERBERT R.B., GISLASON S.R., A diverse ecosystem response to volcanic aerosols, Chemical Geology, 2006, 231, 57–66.
- [11] GAGO C., MARCOS M.L.F., ALVAREZ E., Aqueous aluminium species in forest soils affected by fluoride emissions from an aluminium smelter in NW Spain, Fluoride, 2002, 35(2), 110–121.
- [12] INGRI N., Aqueous silicic acid, silicates and silicate complexes, [in:] Bendz G., Lindquist I. (eds.) Biochemistry of silicone and related problems, 1978, 3–51, New York.
- [13] KRSTULOVIĆ R., VOJNOVIĆ I., RADULOVIĆ D., Refinement of waste gases in new furnaces for aluminum electrolysis and regeneration of water in TLM "B. Kidrič ", Šibenik (In Croatian), III Jug. Int. Symp. on Aluminium, Radenci, 19–23. IV 1974, Zbornik Radova (Book of Abstracts), 87–90.
- [14] SILLÉN L.G., The physical chemistry of seawater, [in:] Sears M. (ed.) Oceanography, 1961, 549– 581, Washington.
- [15]WHO (2002), Fluorides: Environmental health criteria, Report 227.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPW8-0009-0099