栽培基质用炭化稻壳制备工艺研究

Prefabrication Technology of Carbonized Rice Hull for Culture Media

采用正交试验法研究了栽培基质用炭化稻壳制备的最佳工艺条件,即考察炭化温度和炭化时间对稻壳炭化得率和理化性能的影响,得出了炭化温度350℃、炭化时间40 min的优化工艺,在此条件下,炭化稻壳pH值8.06、热值19 937 J/g、固定碳含量为41.16%,炭化得率为51.71%。

Experiments were conducted for the optimal prefabrication technology of carbonized rice hull for culture media by orthogonal test. Effects of carbonization temperature and time on char yield and physieochemieal properties were investigated. The optimal condition were carbonization temperature of 350℃, carbonization time of 40 minutes. Under this condition, char yield was 51.71%. Char with pH value 8.06, caloric value of 19 937 J/g, fixed carbon content of 41.16 % could be produced.