Microorganisms, Free Full-Text
Por um escritor misterioso
Descrição
End pit lakes (EPLs) have been proposed as a method of reclaiming oil sands fluid fine tailings (FFT), which consist primarily of process-affected water and clay- and silt-sized particles. Base Mine Lake (BML) is the first full-scale demonstration EPL and contains thick deposits of FFT capped with water. Because of the fine-grained nature of FFT, turbidity generation and mitigation in BML are issues that may be detrimental to the development of an aquatic ecosystem in the water cap. Laboratory mixing experiments were conducted to investigate the effect of mudline biofilms made up of microbial communities indigenous to FFT on mitigating turbidity in EPLs. Four mixing speeds were tested (80, 120, 160, and 200 rpm), all of which are above the threshold velocity required to initiate erosion of FFT in BML. These mixing speeds were selected to evaluate (i) the effectiveness of biofilms in mitigating turbidity and (ii) the mixing speed required to ‘break’ the biofilms. The impact of biofilm age (10 weeks versus 20 weeks old) on turbidity mitigation was also evaluated. Diverse microbial communities in the biofilms included photoautotrophs, namely cyanobacteria and Chlorophyta (green algae), as well as a number of heterotrophs such as Gammaproteobacteria, Desulfobulbia, and Anaerolineae. Biofilms reduced surface water turbidity by up to 99%, depending on the biofilm age and mixing speed. Lifting and layering in the older biofilms resulted in weaker attachment to the FFT; as such, younger biofilms performed better than older biofilms. However, older biofilms still reduced turbidity by 69% to 95%, depending on the mixing speed. These results indicate that biostabilization is a promising mechanism for turbidity mitigation in EPLs.
Bergey's Manual of Systematics of Archaea and Bacteria
MicrobiologyOpen - Wiley Online Library
Agar Plate Full Ofmicro Bacterias And Microorganisms Stock Photo - Download Image Now - iStock
What's the difference between bacteria and viruses? - Institute for Molecular Bioscience - University of Queensland
Microbiology Notes 42 Pages Downloadable File to Help
Marine Plastic Debris: A New Surface for Microbial Colonization
Microorganism, Definition, Types & Examples - Video & Lesson Transcript
Teacher's Pet - Micro-organism Posters - FREE Classroom Display Resource - EYFS, KS1, KS2, living, things, environ…
Conceptual strategies for characterizing interactions in microbial communities - ScienceDirect
Roadmap for naming uncultivated Archaea and Bacteria
The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on fermented foods
Visualized: The Many Shapes of Bacteria
Free Google Slides and PowerPoint templates about bacteria
de
por adulto (o preço varia de acordo com o tamanho do grupo)
