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An enhanced start-up of an upflow anaerobic sludge blanket (UASB) reactor for diosgenin wastewater treatment was designed and experimentally tested. Gran-ular sludge was formed on day 35 in the reactor with high concentrations of chloride (4000–7000 mg/L) and COD (5000–13000 mg/L) as substrate. A new model for the granulation was proposed which divides the formation of anaerobic granules into six...
Abundant normal alkanes, isoprenoid hydrocarbons, terpanes and steranes were detected in 23 samples taken from the carbonate platform to basin facies in the Devonian Frasnian-Famennian (F-F) transition of Guangxi, South China. They were mainly derived from the phytoplankton or bacteria and algae. Molecular stratigraphic parameters, abundant micron gypsums and pyrite framboids show that hypersaline...
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