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首页> 外文期刊>International Journal of Environmental Science and Technology >Improvement of anaerobic biodegradability of organic fraction of municipal solid waste by mechanical and thermochemical pretreatments
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Improvement of anaerobic biodegradability of organic fraction of municipal solid waste by mechanical and thermochemical pretreatments

机译：通过机械和热化学预处理改善城市固体废物有机分数的厌氧生物降解性

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摘要

The effect of particle size of the organic fraction of municipal solid waste on methane potentiel was investigated and tested at different substrate-to-inoculum ratios (0.1, 0.5 and 1.0). The highest methane yield was obtained with particle size fraction 3 mm at S/I of 0.1. Thermo-alkali and thermo-acid methods were also tested as pretreatment to increase the organic matter solubilization and subsequently methane production. The results indicated that maximum variation (63.6%) of soluble chemical oxygen demand was obtained by thermo-acid method. Optimum conditions of thermo-alkali pretreatment were pH 10, time reaction of 30 min and temperature of 105 degrees C. Soluble chemical oxygen demand and reducing sugar variations reached, respectively, 40 and 69% under these conditions. The methane yield of untreated and thermochemical pretreated OFMSW was determined in batch condition. The highest methane yield (260.9 L/kg VS) was obtained with thermo-alkali pretreatment, which was 21% higher than that of raw substrate. This study may pave a new way for industrial application of dealing with the organic fraction of municipal solid waste.
机译：研究了城市固体废物的有机级分的粒度对甲烷稳定性的影响，并在不同的基底 - 接种物（0.1,0.5和1.0）。用粒度馏分＆gt获得最高的甲烷产率。在0.1的S / I的3毫米。还测试了热碱和热酸方法作为预处理以增加有机物质溶解和随后的甲烷生产。结果表明，通过热酸法获得了可溶性化学需氧量的最大变化（63.6％）。热碱预处理的最佳条件为pH10，时间反应30分钟，温度为105℃。可溶性化学需氧量和降低达到糖的变化，在这些条件下40％和69％。在分批条件下测定未处理和热化学预处理的甲烷产率。用热碱预处理获得最高的甲烷产率（260.9L / kg vs），比原料基质高出21％。本研究可能为处理城市固体废物的有机分数的工业应用铺平了一种新的途径。

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