Study of Biogas Production Rate from Water Hyacinth by Hydrothermal Pretreatment with Buffalo Dung as a Starter

Abstract

In this paper, the effects of hydrothermal pretreatment on biogas enhancement production rates from water hyacinth mixed with buffalo dung was investigated.The focus of the experiment was on thetime of hydrothermal pretreatment and the ratio of water hyacinth with buffalo dung. The hydrothermal pretreatedsubstrates were characterized by TDS, BOD and pH.The hydrothermal pretreatment of 60 minutes with the ratio of water hyacinth to buffalo dung 1:2 showed the highest biogas production rateat 7889 ml/day. However, the highest methane composition was 52.82% which resulted on the hydrothermal treatment of 30 minutes with equal ratio of water hyacinth and buffalo dung. Thus, the optimum of methane yield obtained at hydrothermal pretreatment for 30 minutes with equal ratio of water hyacinth to buffalo dung is 2856 ml/day.The hydrothermal pretreatment increases the rate production of biogas 102% and the methane yield51% relative to untreated water hyacinth.The ratio of water hyacinth and buffalo dung has a great impact on biogas productionrateand compositions for hydrothermal pretreated substrates.

Effects of organic loading rates on microbial communities and biogas production from water hyacinth: a case of mono‐ and co‐digestion

“…1 Pre-treatment methods that modify the lignocellulosic structure, making the conversion of organic matter easier for microbial communities, have been used to optimise the process. 7,10,[19][20][21] In addition, the co-digestion of water hyacinth plants with other sources of organic matter is essential to improve the efficiency of the process. 1, [8][9][10]22 For a successful and efficient AD process, it is essential to maintain specific microbial communities in the digester.…”

Response Surface Optimisation of Biogas Potential in Co-Digestion of Miscanthus Fuscus and Cow Dung

“…This OFAT technique is a waste of time and uncertain to attain optimum conditions due to avoidance of the interactions between some of the parameters (Nasruddin et al, 2018). To resolve this problem, recent researchers have adapted response surface methodology (RSM), as an essential statistical tool for experimental design, generating models, analysing and evaluating single factors and interactive effects of the input variables on the response; and to obtain optimum conditions to predict the specified response (Appels et al, 2011;Kurniawan et al, 2014).…”

“…Some of these include sugar and oil refinery wastewater (Tetteh & Rathilal, 2018) and biogas production (Menon et al, 2017). Therefore, the RSM is an efficient tool to control and stimulate the complex influential factors of the AD Response Surface Optimisation of Biogas Potential in Co-Digestion of Miscanthus Fuscus and Cow Dung process, to enhance the study of their interactive effects on biogas production (Kurniawan et al, 2014;Tetteh & Rathilal, 2017).…”

“…Thus, BBD is arguably more efficient, compared to central composite design, due to its less number of runs (Protasov, 2018;Haris et al, 2018). However, it is not nearly as flexible compared to CCD, in terms of its ability to be conducted progressively (Kurniawan et al, 2014;Tetteh & Rathilal, 2017). This is because the BBD is efficient in estimating the coefficient of determination (R 2 ) for a specified model, experimental errors and good data fitness.…”

The potentials of production of biogas from constructed wetland macrophytes

“…Other works carried out were on macrophytes from natural wetland and water ways (Njoku et al, 2016;Njogu et al, 2015, Kurniawan et al, 2014, Sheeraz et al, 2013. In addition, the work of Kurniawan et al (2014) was conducted by mixing natural wetland macrophyte with buffalo dung. Sugumaran et al (2014), used water hyacinth blended with cow dung, while Tian et al, 2016) investigated the efficiency of biogas slurry by earthwormconstructed wetland.…”