The “Doctor Robik 109” complex biopreparation as a bioagent for utilizing aquatic plant phytomass in biofuel cells

D. Stom, G. Zhdanova, N. Yudina, S. Alferov, A. Chesnokova, M. Tolstoy, A. Kupchinsky, M. Saksonov, S. Zakarchevskiy, T. Enkhdul, A. Franzetti, M. Rahimnejad
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Abstract

The paper demonstrates the possibility of using the “Doctor Robik 109” complex microbiological preparation (OOO VIPEKO, Russia), applied in cesspools and sewage caissons, for obtaining electric current in biofuel elements during the utilization of the Ulothrix sp., Spirogyra sp., Elodea canadensis aqueous plant phytomass. The kinetics of electrical parameters of the studied biofuel cells was characterized by a steady and prolonged growth – for at least 30 days. This may be associated with the slow transformation of the used substrate by microorganisms, which additionally ensures the long-term operation of biofuel cells on their basis. In Spirogira sp. biofuel cells, the biological preparation generated the voltage (broken circuit mode) and current strength (short circuit mode) equal up to 746mV and 1745 A, respectively. In Ulothrix sp. biofuel cells, these values comprised 360 mV and 1120 μA for a 25-day period, respectively. When using a E. canadensis substrate, the studied bioagent microorganisms generated the voltage and current of up to 643 mV and 568 μA during a 25-day period, respectively. An increase in the electrical parameters of biofuel cells, which were based on the studied biological preparation and the phytomass of higher aquatic plants and algae, was accompanied by an increase in the number of viable microorganism cells and a decrease in the plant biomass. Since phytomass growth is activated by the phytoremediation measures of additional wastewater treatment or during the eutrophication of water bodies, the proposed method for applying aquatic plants in biofuel cells represents a promising approach to utilizing excess phytomass.
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“dr . Robik 109”复合生物修复作为生物制剂,用于在生物燃料电池中利用水生植物生物量
本文展示了在利用Ulothrix sp., Spirogyra sp., Elodea canada水生植物生物量的过程中,使用“Doctor Robik 109”复合微生物制剂(OOO VIPEKO, Russia)在化粪池和污水箱中获得生物燃料元件电流的可能性。所研究的生物燃料电池的电参数动力学的特点是稳定和长时间的生长-至少30天。这可能与微生物对所用底物的缓慢转化有关,这另外确保了生物燃料电池在其基础上的长期运行。在Spirogira生物燃料电池中,该生物制剂产生的电压(断路模式)和电流强度(短路模式)分别高达746mV和1745 A。在Ulothrix sp.生物燃料电池中,这些值分别为360 mV和1120 μA,持续25天。当使用加拿大绿杆菌底物时,所研究的生物制剂微生物在25天内分别产生高达643 mV和568 μA的电压和电流。基于所研究的生物制剂和高等水生植物和藻类的生物量,生物燃料电池的电参数增加,伴随着活微生物细胞数量的增加和植物生物量的减少。由于植物生物量的增长是由额外的废水处理或水体富营养化过程中的植物修复措施激活的,因此提出的将水生植物应用于生物燃料电池的方法代表了一种利用多余植物质的有前途的方法。
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