Effects of Fermentation Temperature and Waste Paper (as Auxiliary Feedstock) on Biogas Yield of <i>Ulva pertusa </i>

Abstract

Experimental studies on biogas yield of Ulva pertusa were carried out at different fermentation conditions. At 25°C, 35°C and 45°C, the biogas yield from fermentation of Ulva pertusa were 223.2mL/gVS, 256.2mL/gVS and 300.0mL/gVS,respectively, while the methane content in the biogas produced at 35°C was the highest. In addition, biogas yield reached to 482.5mL/gVS and 499.6mL/gVS by adding waste paper of 3.5g and 7.0g to the fermentation liquor, the corresponding methane content in the biogas were 56.0% and 51.2%, respectively. Comparatively, higher biogas yield, methane content and system stability could obtain from Ulva pertusa by adding 3.5g ~ 7.0g of waste paper and fermentation at 35°C.The fermentation process of Ulva pertusa for biogas production generally lasted for 19~25 days.

Physiological responses of Ulva fasciata Delile (Ulvales, Chlorophyta): comparison of two populations from thermally distinct sites from Brazilian coast

“…is probably the most studied genus, due to its cosmopolitan distribution and easy collection (inhabiting the upper mesolittoral) (Joly 1965, Villaça et al 2010. Ulva species have prominent ecological and economic importance such as applications in bioremediation (Neori et al 1991, Vijayaraghavan and Joshi 2014, Oliveira et al 2016), production of noxious blooms (Kong et al 2011, Wang et al 2011, Guidone and Thornber 2013, study of the bacterial-algae interaction (Provasoli and Pinter 1980), as bioindicators of eutrophication conditions (Kozhenkova et al 2006), potential source of biofuels (Li et al 2013), and as a source of food (Mabeau and Fleurence 1993). Ulva species also produce bioactive molecules with biomedical applications on cancer and other therapies (Ryu et al 2013, Wang et al 2013).…”