Seed yeast cultivation for salad oil manufacturing wastewater treatment.
The mixture of five yeast strains obtained from soil could remove about 85% TOC of oil-rich wastewater in batch test. While the highest MLSS was obtained at an N:C of 1:5, the oil removal decreased with the increase of N:C during yeast sludge cultivation. Ammonium chloride was the best nitrogen source for yeast cultivation from the viewpoint of yeast growth and oil utilization. An ammonia concentration of over 1300 mg/L led to mass death of yeast at a pH of 5. The ammonia concentration should be controlled at a level of 1000 mg/L or lower.
Zheng
Shao-kui
SK
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. yangmin@mail.rcees.ac.cn
Yang
Min
M
Li
Pei-rui
PR
D001673:Biodegradation, Environmental; D003247:Conservation of Natural Resources; D019649:Food Industry; D007220:Industrial Waste; D010938:Plant Oils / Q000378:metabolism*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*; D014865:Waste Disposal, Fluid; D015003:Yeasts
D007220:Industrial Waste; D010938:Plant Oils; D012989:Soil Pollutants