García J, Davies S, Villa R, Gomes D M, Coulon F, Wagland S T
School of Energy, Environment and Agrifood, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK.
Viridor Waste Management Ltd, Viridor House, Priory Bridge Road, Taunton, Somerset TA1 1AP, UK.
Waste Manag. 2016 Sep;55:336-44. doi: 10.1016/j.wasman.2016.06.003. Epub 2016 Jun 8.
The objectives of this study were to assess the biogas potential of landfilled materials and to further validate the suitability of the enzymatic hydrolysis test EHT as a valuable alternative to substitute the standardised test currently in use (BMP). Both tests were applied to a range of landfill waste samples. The waste composition and volatile solids content (VS) profile together with the BMP test results showed that the biogas potential of the waste samples was directly related to their VS content, as expected. The positive correlation between the VS and the BMP test (r=0.67) suggests that the first could be used as a primary indicator of biogas potential of waste samples. Nevertheless, it should be validated against the BMP test because, occasionally, the VS content does not equate to the biogas production. This was mainly due to the paper content of the samples which also correlates positively (r=0.77) with the BMP biogas production. The EHT results showed a higher correlation with the BMP test (r=0.91) than in previous studies which used a wider mixture of enzymes containing cellulase, hemicellulase and carbohydrase. This finding positions the EHT as a quick assessing method for the biodegradability of waste samples in future sample regimes.
本研究的目的是评估填埋材料的沼气潜力，并进一步验证酶水解试验（EHT）作为替代目前使用的标准化试验（BMP）的一种有价值的替代方法的适用性。这两种试验都应用于一系列填埋废物样品。废物组成和挥发性固体含量（VS）概况以及BMP试验结果表明，正如预期的那样，废物样品的沼气潜力与其VS含量直接相关。VS与BMP试验之间的正相关关系（r = 0.67）表明，前者可作为废物样品沼气潜力的主要指标。然而，由于偶尔VS含量并不等同于沼气产量，因此应通过BMP试验进行验证。这主要是由于样品中的纸张含量也与BMP沼气产量呈正相关（r = 0.77）。EHT结果显示与BMP试验的相关性（r = 0.91）高于先前使用包含纤维素酶、半纤维素酶和糖酶的更广泛酶混合物的研究。这一发现使EHT成为未来样品体系中快速评估废物样品生物降解性的方法。
