废弃木耳菌棒的好氧水解特性

为分析废弃木耳菌棒好氧水解特性,在总固体浓度为10%,温度为34、38、44℃,时间为4、8、12、16、20、24 h条件下作水解发酵试验。结果表明,温度为44℃,好氧水解时间8 h时,木质素降解速率最快,降解率高达19.91%,占总降解率67.05%。在此条件下,厌氧发酵废弃木耳菌棒VS产气率较直接厌氧发酵对照组提高13.16%。表明好氧水解可有效提高木质素降解率,提高产气率。

Study on aerobic hydrolysis characteristic of the agaric cultivation waste

In order to investigate aerobic hydrolysis characteristic of the agaric cultivation waste,agaric residue was used as raw material for hydrolysis and fermentation with 10％ TS mass fraction.The experiments were carried out individually at 34,38,44 ℃ with 4,8,12,16,20,24 h.The results showed that aerobic hydrolysis of agaric cultivation waste whose time was 8h and temperature was 44 ℃ had the highest degradation rate of lignin of 19.91％,which accounted for 67.05％ of the total degradation.Under the optimum conditions,VS gas production rate of agaric cultivation waste increased by 13.16％ comparing with the direct anaerobic fermentation.The experimental results showed that with aerobic hydrolysis pretreatment lignin degradation rate and gas production rate of the agaric cultivation waste can be effectively improved.