风化作用
溶解
荧光假单胞菌
非生物成分
赤铁矿
浸出(土壤学)
针铁矿
细菌
地质学
环境化学
矿物学
化学
地球化学
土壤科学
土壤水分
物理化学
吸附
古生物学
有机化学
作者
Anna Potysz,Wojciech Bartz
标识
DOI:10.1016/j.conbuildmat.2023.130584
摘要
Petrological and geochemical approach was implemented to decipher red sandstone dissolution under biotic conditions with bacteria, Pseudomonas fluorescens. Bacteria accelerated dissolution by up to 3.4 times as compared to abiotic weathering rates. The degree of sandstone dissolution was calculated at 0.2–0.6% and 0.2–3.7% for Kopulak and Tumlin sandstones, respectively. Further, goethite was found to be more susceptible to bacterially mediated Fe releases as compared to hematite. Cement structure was also found to affect leaching potential, while abiotic weathering revealed dissolution not exceeding 0.5%. Study proves that bioweathering processes may affect durability of sandstones used as construction and building materials and cultural heritage objects.
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