Record details

Title
    Does NaOH supplement control sulphate production in aerated mine lake sediment?
Statement of responsibility
    Jiří Fajtl, Rostislav Ledvina, R. Tichý, K. Wendt-Potthoff, K. Friese, M. Koschorreck
Author
    Fajtl, Jiří
    Friese, K.
    Herzsprung, P.
    Koschorreck, M.
    Ledvina, Rostislav
    Tichý, R.
    Wendt-Potthoff, K.
Language
    anglicky
Source title - monograph
    Applied Mineralogy in Research, Economy, Technology, Ecology and Culture, Proceedings of the Sixth International Congress on Applied Mineralogy ICAM 2000, Göttingen, Germany, 17-19 July 2000
Pages
    s. 535-538
Notes
    6 obr., 5 bibl.
    il.
Subject group
    acidita
    adsorpce
    aerace
    důl opuštěný
    kyselá důlní voda
    materiál suspendovaný
    monitoring
    nádrž vodní
    neutralizace
    oxid siřičitý
    sedimentace recentní
    sodík
    studie experimentální
    vápník
Geographical name
    SRN-Sachsen
Keyword
    Aerated
    Control
    Does
    Lake
    Mine
    NaOH
    Production
    Sediment
    Sulphate
    Supplement
Abstract (in english)
   Our study was carried out to evaluate the effects of NaOH supplements on sulphate production in aerated mine lake sediment. Twelve levels of NaOH were added to the sediment to control sulphate biochemical production (SO4total). It was found that up to 0.29+-0.01 mol/kg of SO4total was produced in all treatments till the end of the experiment (375 hours), regardless of the level of NaOH addition. The NaOH supplement controlled SO4total production only in the early phases of the aeration (till 200 hours). However, SO4total in most NaOH treatments was higher than in untreated control in these early phases. The decrease of SO4total was observed only in treatments with NaOH additions of 0.4-0.75 mol/kg in the period between 60-150 hours of the aeration. After 200 hours, all variants produced the same amounts of SO4total as untreated control.
   Since the aeration is difficult to control in practical conditions, we assumed that the amendment of NaOH can not be used to reduce the level of produced sulphate in freshwater sediments.
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    21. 3. 2008
Import date
    8. 8. 2012