摘要
将微波技术应用于微生物法煤炭脱硫,研究了煤粉粒径、煤浆浓度、初始pH值、嗜酸氧化亚铁硫杆菌(Acidi-thiobacillus ferrooxidans)接种量、微波辐照时间、脱硫周期等因素对微波预处理和微生物联合脱硫效果的影响,同时以单纯Acidithiobacillus ferrooxidans煤炭脱硫作对照。在煤样粒径为200目(<0.074 mm)、煤浆浓度为10%、初始pH为2.5、菌体接种量为10%、微波辐照时间3 min、脱硫周期4 d、温度30℃、摇床转速为160 r/min条件下,微波预处理和微生物联合作用对煤炭中全硫的脱除率可达51.3%。该结果表明,微波预处理和微生物联合煤炭脱硫技术可以大大缩短微生物脱硫周期,该研究结果可为开发新脱硫工艺提供参考。
Microwave method was used in biodesulfurization of coal. The impacts of some important factors, such as coal particle size, pulp density, initial pH, Acidithiobacillus ferrooxidans inoculation amount, microwave irradiation time, desulfurization cycle on biodesulfurization in combination with microwave pretreatment and biodesulfurization without pretreatment were studied. The results indicated that microwave irradiation of the coal had a certain promotion on biodesulfurization. It was concluded that the optimized experiment conditions were coal particle size 〈0. 074 mm, pulp density 10% , initial pH 2.5, cell inoculation amount 10%, microwave irradiation time 3 min, desulfurization cycle 4 d, temperature 30℃ , rotation speed of rocking bed 160 min, the desulfurization rate of total sulfur reached 51.3%. The study results can be used as reference in the development of new desulfurization technique.
出处
《环境工程学报》
CAS
CSCD
北大核心
2008年第3期408-412,共5页
Chinese Journal of Environmental Engineering
