摘要
采用红外光谱、紫外可见光谱、荧光光谱分析了120 d污泥好氧堆肥过程中胡敏酸(HA)光谱特征变化。结果表明,随着堆肥进行,污泥堆肥中HA芳构化程度和稳定度明显提高,多糖、脂肪类成分减少,氧元素含量增加;HA荧光强度大幅减弱,主峰位置没有明显变化;HA紫外光谱比较简单,不适合作为污泥堆肥腐熟度的判断指标。堆肥63 d之后,HA光谱特征变化较小,与堆体温度和种子发芽指数(GI)变化趋势一致,可以将其作为堆肥腐熟度的辅助判断指标。
Fourier transform infrared spectroscopy（FTIR）,UV-Vis optical test and fluorescence analysis were used to determine E4/E6 of humic acid（HA） in sewage sludge compost during 120 days composting process.The results showed a reduction in polysaccharides and aliphatic components,and a relative increase in aromatic components and oxygen element.The fluorescence spectra of HA exhibited a sharp reduction during composting process,and the primary peak didn＇t shift significantly.The UV spectra of HA was simple,and it wasn＇t suited to evaluate compost maturity.After 63 days composting process,spectroscopic characteristics of HA had a same variation tendency with pile temperature and germination index（GI）,and it could be used as auxiliary indicators to evaluate compost maturity.
出处
《西北农业学报》
CAS
CSCD
北大核心
2010年第7期181-185,共5页
Acta Agriculturae Boreali-occidentalis Sinica
基金
陕西省科技攻关项目(2008K01-03)
关键词
污泥
堆肥
胡敏酸
光谱特征
腐熟度
Sewage sludge
Composting
Humic acids
Spectroscopic characteristics
Maturity
