نویسندگان
1 عضو هیئت علمی
2 دانشگاه محقق اردبیلی
3 دانشگاه کشاورزی و منابع طبیعی ساری
4 جهاد کشاورزی استان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study aims to evaluate the performance of an innovative three-stage baffled plug flow anaerobic digester and compare it with a batch digester in terms of biogas and methane production from the anaerobic digestion of cattle manure, under the influence of different concentrations of Fe3O4 nanoparticles. Four 4-liter transparent plastic batch digesters and four 12-liter horizontal semi-continuous digesters equipped with an automatic mechanical stirrer were used for the experiments. All digesters were placed in an incubator at 37°C for 45 days. Three different concentrations of Fe3O4 nanoparticles (50, 100, and 200 mg/L) were added to the cattle manure mixture, and a control sample without nanoparticles was also used. The experiments were conducted in triplicate using a completely randomised design. Overall, the addition of nanoparticles led to an increase in biogas and methane production. The highest biogas and methane yields in the batch digester were obtained from the digester containing 100 mg/L of nanoparticles, approximately 37 and 12 litres, respectively, representing a 41% increase in biogas and a 51% increase in methane compared to the control digester. Similarly, the highest biogas and methane yields for the semi-continuous digester were obtained from the digester containing 100 mg/L nanoparticles, approximately 166 and 19 litres, respectively, representing a 36% increase in biogas and a 48% increase in methane compared to the control digester. The difference in biogas and methane production between the control digester and the digester containing 200 mg/L of nanoparticles was negligible.
کلیدواژهها [English]
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