Conversion of lunar regolith into a plant growth medium is crucial to the development of a regenerative life support system for a lunar base. Simulants must be used to study weathering processes and to develop procedures for the conversion of lunar regolith into a suitable plant growth medium because of the shortage of actual lunar materials.Dissolution studies have been conducted for Johnson Space Center Lunar Simulant-1 (JSCLS-1) to assess levels of plant nutrients and toxic elements. Weathering in water for 150 4 in the presence of atmospheric oygen and carbon dioxide, yielded alkaline solutions with pH near 8.8. Concentrations of most plant nutrients were at levels normally considered acceptable for plant growth. However, nitrogen was deficient, and phosphorus was present at levels typical of unfertilized soils. DTPA extracts indicated possible manganese and zinc deficiencies. Solution metals were at concentrations far below those generally harmful to plants.Results for Minnesota Lunar Simulant (MLS) were similar to those for JCSLS-1. Deficient elements identified were identical, with the exception of zinc which was deficient only for JSCLS-1. Amounts of iron or manganese extracted with DTPA were comparable for the two simulants, even with much higher glass content in JSCLS-1. This suggests that similar minerals control the extractability of iron and manganese. Comparison of results shows that MLS can be used in addition to JSCLS-I for studying important aspects of weathering chemistry.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    WEATHERING OF LUNAR SIMULANTS


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    International Conference On Environmental Systems ; 1994



    Erscheinungsdatum :

    1994-06-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Lunar Simulants

    Edmunson, Jennifer E. | NTRS | 2018


    Lunar Soil Simulants- An Assessment

    Toklu, Yusuf Cengiz / Akpinar, Pinar | IEEE | 2019



    Important Considerations for Lunar Soil Simulants

    Taylor, L.A. / Liu, Y. / American Society of Civil Engineers | British Library Conference Proceedings | 2010


    Development Issues for Lunar Regolith Simulants

    Rickman, Doug / Carpenter, Paul / Sibille, Laurent et al. | NTRS | 2006