Lab-cultured biofilm stabilization of non-cohesive sediments : Quantifying the elastic constant, k
作者： E Vignaga , H Haynes , W Sloan , A Fernandes , M Jarvis
DOI: 10.1201/B10999-47
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摘要: A monoculture of cyanobacterium (Phormidium sp.) was grown for up to 10 weeks on spherical glass beads (d50 = 1.09 mm) under constant unidirectional flow conditions. Using a 0.3 m × 15m flume facility, the strength biofilm-sediments adhesion tested at threshold entrainment. High speed videographic analysis focussed biofilm entrainment two different scales (small 4.5 cm 3.4 cm; large =20cm 20 cm) and image post processing employed software ImageJ. Results indicated 23-77% increase in biostabilized sediment, compared with that abiotic sediment. The sufficiently strong tensile testing could be elucidate its material properties those composite Both exhibited elastic behaviour which characterized by Hooke's Law. Describing this manner will allow modification traditional models sediment transport incorporate binding effects an biofilm.
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