Sustainability assessment of biogas production from buffalo grass and dung: biogas purification and bio-fertilizer

Abstract

Biomass from wetland aquatic grass and buffalo grass can be exploited for biogas production, because this substrate is plenteous and does not compete with food production. In this study, the grass substrate was physically pretreated by boiling with different retention time to increase its biodegradability and was examined in batch mode. Boiling pretreatment suggested that 100 °C with 2 h retention time was the best condition. The results showed that the optimum grass concentration in the 1:1 ratio of co-digestion mixture with manure produced the highest methane yield. The results suggested that co-digestion of buffalo grass and buffalo dung was a promising approach for improving biogas production. This study was achieved the upgraded biogas through biological purification contained 90.42% CH4 8.04% CO2 1.43% O2 and 0.11% other trace gases—a remarkable performance based on an efficiency criteria. Furthermore, the digestate has high nutrient concentrations that can potentially use as fertilizer.

Biomethane Potential of Invasive Aquatic Weed Water Primrose

“…The biochemical methane potential (BMP) of the substrates was performed according to [20,21]. To apply the model to a specific feedstock, we need to know the feedstock's chemical components.…”

Effects of Co-substrate Concentrations on the Anaerobic Co-Digestion of Common Reed and Cow Dung

“…The results proved that the co-digestion of material always give more potential for producing due to the abundance of nutrients in the substrate helps microorganisms thrive more smoothly. Moreover, available components in feedstock after NaOH pretreatment more chance to present the significant improvement on biodegradability [14,15]. Hence, could explain the reason why biogas production of NaOH-treated common reed was greatly increased.…”

Alternatif Yakıt Biyogaz Potansiyelinin Model Bir İlçe için Araştırılması

“…Zhang et al, 2020;Zhoua et al, 2021). Hammadde miktarı ve ulaşımı, kullanım kolaylığı, üretim süreci sonucu oluşan biyogübre potansiyeli gibi faktörlerden dolayı biyogaz üretimi alternatif yakıtlar içerisinde biraz daha ön plana çıkmaktadır (Cestonaro et al, 2015;Chuanchai & Ramaraj, 2018;Feiz et al, 2020;Panuccio et al, 2016;Quintanar-Orozco et al, 2018). Biyogaz üretimi doğadaki organik maddelerden ve atıklardan metonajen bakterileri tarafından kendiliğinden gerçekleştirilir ancak oluşan metan gazı karbondioksitle birlikte üretilen sera gazının etkinliğini artırırken hava kirliliğine de sebep olmaktadır (Khalil, 2003;Pochwatka et al, 2020).…”