Study of C/N Ratio Effect on Biogas Production of Carica Solid Waste by SS-AD Method And LS-AD

Bakti Jos,Fariha Hundagi,Rizqi Pindy Wisudawati,Siswo Sumardiono,Budiyono Budiyono,A.C Kumoro,X Rong,Hadiyanto Hadiyanto,L Yung,M.A Hussain,A.W Lothongkum,M.T Phong,W.R.W Daud,P.T.S Nam,S.A Roces

doi:10.1051/matecconf/201815603055

Abstract

Biogas is a renewable energy which can be used as an alternative source to replace fossil fuels. Recently, the use of energy has become an important issue because the oil sources and natural gas are depleting. Utilization of carica waste to produce biogas can reduce the consumption of commercial energy sources such as kerosene as well as the use of firewood. Biogas is produced by the process of organic material digestion by certain anaerobic bacterial activity in anaerobic digester. In this study we studied the influence of LS-AD and SS-AD methods, the effect of C / N ratio on biogas yield obtained and kinetics of biogas production reaction. The study was conducted by making a total solid variation of 7%, 9%, 11%, 13%, 19%, 21%, 23% and C/N ratio 25 and 30. The study started with carica waste collection process and examination of the total composition of solids and water content. Thereafter, calculation and determination of variation of C / N ratio by mixing the substrate with inoculum and urea into the reactor. Observe the volume of biogas produced every two-day intervals. The highest biogas production rate of 1.7825 ml/g TS day was obtained from carica solid waste variable by liquid state anaerobic disgestion and C/N 25.

Highlights

Energy is a fundamental need for human survival
In carica waste with a solid total of 7% fluctuating biogas production tends to increase until day 12
3.2 Effect of Total Solid on C/N ratio 25 by SSAD method Daily biogas production volume varies depending on the total solid condition

Summary

Introduction

World oil prices and fuel requirements are increasing while crude oil reserves are depleting, so that sustainable energy supply has become one of the main challenges that humans will face in the future [26]. This moves the current economy towards alternative energy sources [4]. Biogas is a carbon-neutral source One of renewable energy, generated from the anaerobic digestion process of biodegradable waste, plant biomass, crop residues and manure. This means that within a year the peels of carica fruit obtained reaches 73,000 kg [16] These carica peels byproducts need further processing so as to have a positive impact on the industry. The purpose of this research is to know the effect of total solid and C/N ratio toward biogas yield obtained and to analyze the kinetics of biogas production reaction [34, 39]

Experimental

Results and Discussion

Conclusions