Production of Biogas from Water Hyacinth with Addition of Cow Dung as Inoculum Using a Plug Flow Anaerobic Reactor

Authors

  • Soeprijanto Soeprijanto Department of Industrial Chemical Engineering, Faculty of Vocational Studies, Sepuluh Nopember Institute of Technology
  • Rakhmat Asrie Wibowo N Department of Industrial Chemical Engineering, Faculty of Vocational Studies, Sepuluh Nopember Institute of Technology
  • Dinal Izzati Department of Industrial Chemical Engineering, Faculty of Vocational Studies, Sepuluh Nopember Institute of Technology
  • Wulan Maghfiro Department of Industrial Chemical Engineering, Faculty of Vocational Studies, Sepuluh Nopember Institute of Technology
  • Risqy Rohmawati Department of Industrial Chemical Engineering, Faculty of Vocational Studies, Sepuluh Nopember Institute of Technology

Keywords:

biogas, cow dung, energy, fermentation, water hyacinth.

Abstract

Biogas as an alternative energy source has several advantages over fossil fuels. Water hyacinth is a type of weed that has the potential to produce biogas. The purpose of this study was to determine the effect of pre-treatment on water hyacinth with the addition of 0.5 N NaOH and without NaOH and determine the effect of ratio of water hyacinth and water at 1: 2 and 1: 3 to the biogas production in a Plug flow reactor. Water hyacinth was crushed and then pre-treated by heating it in 0.5 N NaOH solution at 100oC. Biogas output from the reactor was accommodated in tubular plastic, and the volume of biogas was measured by water displacement using a volumetric glassware. The results showed that the average production of biogas at ratio of 1: 2 and 1: 3 was 9,983 ml and 7,172 ml, with  a composition of CH4 (45.024%), CO2 (11.50%), H2S (0.86%), NH3 (0,3%) and CH4 (35.25%), CO2 (12.41%), H2S (0.96%), NH3 (0.34%), respectively. The average production of biogas in the pre-treatment by heating materials 100oC without NaOH and heating 100oC with NaOH 0.5 N was 11,853 ml and 9,110 ml with biogas composition produced was CH4 (50.19%), CO2 (12.36%), H2S (0.64%), NH3 (0.33%) and CH4 (54.13%), CO2 (12.36%), H2S (0.91%), NH3(0.43%), respectively. It concluded that the addition of NaOH for thermal treatment was able to increase the production of biogas and the methane content in the biogas produced

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Published

2019-05-25

Issue

2019: PROSIDING SNTKK 2019

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Articles

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