Exploring optimal strategies for aquatic macrophyte pre-treatment: Sustainable feedstock for biohydrogen production

Preliminary study on Azolla cultivation and characterization for sustainable biomass source

“…Similarly, lignocellulose substrate in Azolla undergoes biological pretreatment to produce sugar for bioethanol production [54][55][56][57]. Azolla also undergo enzymatic hydrolysis to produce sugar to be used as a substrate in biohydrogen production [11,12,58,59]. Carbohydrate content of Azolla is high 45.86% IOP Publishing doi:10.1088/1742-6596/2259/1/012018 7 and this indicated that Azolla has high fibre content.…”

Sustainable bioenergy solutions to enable development in low- and middle-income countries beyond technology and energy access

“…Karthikeya et al [12], Ordoñez-Frías et al [13], Ozonoh et al [14], Sekoai et al [16] showed how thermal, mechanical and chemical pre-treatment of biomass can help to overcome some of these challenges and improve the versatility of feedstocks. Chen et al [8], Karthikeya et al [12], and Sekoai et al [16] showed the high potential of advanced conversion technologies to produce hydrogens and alcohols, that have multiple applications including liquid biofuels for transport. The real cost and implementation of such bioenergy approaches is yet to be widely exploited even in advanced economies.…”

“…The SI articles investigating the technical feasibility and development of bioenergy [8,12,13,16,20] showed possible application of different conversion technologies and utilisation of feedstocks as well as the optimisation through pre-treatment for different types of feedstock and conversion pathways.…”

“…While most of the produced and sourced biomass is land-based, there are also opportunities for water-based feedstocks. The SI article by Karthikeya et al [12] investigates how aquatic macrophyte that do not compete for land use or food production and can be suitable for the production of 2 nd generation biofuels and hydrogen.…”

Responsabilidade socioambiental no contexto educacional: Um estudo de caso sobre o Programa Brasil Reciclado da Faculdade Sul Fluminense

“…O teor de celulose e hemicelulose (25% e 35% respectivamente) tornam o aguapé uma matéria prima promissora para conversão de açúcares fermentescíveis em bioetanol (TEIXEIRA et al, 2019). Entretanto a ruptura destes polissacarídeos é um processo complexo e requer pré-tratamento químico e/ou enzimático, sendo a hidrólise química a mais usual, podendo ser feita com ácidos, bases ou a combinação destes, afim de converter os polissacarídeos complexos em açúcares fermentáveis (KARTHIKEYA et al, 2020). O ácido sulfúrico (H2SO4) diluído tem sido muito utilizado como catalisador no processo de solubilização da biomassa por proporcionar teores de sólidos solúveis totais (Brixº) favoráveis para a fermentação alcoólica (12-18 Brixº) de acordo com a literatura especializada (TEIXEIRA et al, 2019).…”