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Title: Green and renewable electricity generation from wastewater inoculated with seaweeds extract using novel tool of bioreactors
Authors: Khan, Abdul Majeed
Naz, Shamsa
Ahmed, Muhammad Naeem
Yasmeen, Kousar
Keywords: Wastewater;Seaweeds;Biohydrogen;Electricity;Microbial fuel cell
Issue Date: May-2018
Publisher: NISCAIR-CSIR, India
Abstract: This research article presents the production of biogas and conversion of biohydrogen to the electrical energy through the development of bioreactors using domestic wastewater supplemented with the extracts of seaweeds namely Melanothamnus afaqhusainii, Cystoseira indica and Sargassum tenerrimum as substrates. Biogas so produced by anaerobic digestion also contains biohydrogen which was converted to electricity by using bioreactors. Nickel coated zinc electrode was used to convert bio-H2 to electricity through redox reactions. Power output was enhanced by the addition of the extracts of seaweeds and by introducing the air in to the cathodic chamber where oxygen reacted with the H+ to form H2O. In addition, the maximum power output generated by series and parallel combinations of four units under the influence of air was found to be 7.70 mW (sufficient to turn on LED) and 3.83 mW respectively. Power output was found to be directly proportional to the total algal content, volume of biogas, COD, BOD and BOD5.
Page(s): 1081-1087
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.47(05) [May 2018]

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