Characterization of Cynara cardunculus L. stalks and their suitability for biogas production

Water-energy nexus: Anaerobic co-digestion with elephant grass hydrolyzate

“…The results achieved in terms of methane yield and VS removal efficiency is in accordance with those obtained with other energy crops (Oliveira et al, 2012). Results show that EGH is a good cosubstrate for biogas production achieving 66% of CH 4 content during the trial F2.…”

“…The hemicelluloses fraction can be easily removed by an alkaline pre-treatment and the obtained liquid fraction can be used as co-substrate in AD (Ravidran and Jaiswal, 2016;Oliveira et al, 2012;Reddy et al, 2012).…”

“…The main objective of the present study, based on previous research (Oliveira et al, 2012), was to assess the effect of incorporating elephant grass (Pennisetum purpureum) as co-substrate, after a mechanical-thermal-chemical pre-treatment to enhance SS methane production.…”

Quality of residues of the biodiesel chain in the energy field

“…In literature, also reuse of residues in many other productive contexts are taken into consideration. In energy sector the residual biomass deriving from cultivation is used for combustion (Fernández et al, 2006;Alaru et al, 2011), for biogas production (Garcia-Peña et al, 2011;Oliveira et al, 2012;Bacenetti et al, 2013;Mönch-Tegeder et al, 2014;Pagés-Díaz et al, 2014) and in more complex processes such as pyrolysis, gasification (Encinar et al, 2000(Encinar et al, , 2002 and hydrolysis (Luo et al, 2011) with the consequent production of new biofuels. Moreover, following different process techniques the crop residues can be used for the production of bio-based (Cherubini and Ulgiati, 2010;Pronyk and Mazza, 2012).…”

Application of optimized alkaline pretreatment for enhancing the anaerobic digestion of different sunflower stalks varieties

“…[11] Moreover, Datta [12] suggested that alkaline pretreatment leads to the saponification of the uronics bonds between hemicelluloses and lignin, facilitating the diffusion of the hydrolytic enzymes. [12] Consequently, these recent years during, alkaline and thermo-alkaline pretreatments to enhance methane potentials have been widely investigated on various lignocellulosic substrates such as sorghum forage, [13] wheat straw, [13] corn stover, [14,15] grass sillage, [16] rice straw, [17] Cynara stalks [18] and barley waste. [19] Among alkaline pretreatment applications, Zhu et al [14] have observed an enhancement of the methane potentials of corn stover of 40% after pretreatment at 20 • C for 24 h and a concentration of 5% of NaOH.…”