A novel co-digestion approach was evaluated to determine if agricultural and industrial waste residues could efficiently degrade straw without pretreatment. Untreated rice straw was co-digested with pig wastewater and anaerobic sludge from the pulp and paper mill treatment process in a pilot-scale digester (1 m) operated in dry, mesophilic conditions. The total weight ratio of dry straw to pig ...

Three catch crop species, ryegrass, forage rape and black oat, were grown between successive rotations of maize to reduce nitrogen leaching due fertilization with digested dairy manure. Catch crops showed a high nutrient uptake, but wide range, depending on the year specie. Ensiling was shown be feasible storing method increasing methane production per hectare 14–36% compared fresh crop. In sem...

Anaerobic co-digestion of lipid-spent Botryococcus braunii (LSBB) with waste activated sludge (WAS) and glycerol was studied. Different co-digestion mixtures were assessed in biochemical methane potential tests, performed at mesophilic temperature (35oC). The experimental methane yields obtained were compared to theoretical values calculated from the methane individual yields. No significant in...

A design of experiments was applied to evaluate different strategies to enhance the methane yield of macroalgae Gracilaria vermiculophylla. Biochemical Methane Potential (BMP) of G. vermiculophylla after physical pre-treatment (washing and maceration) reached 481±9 L CH4 kg(-1) VS, corresponding to a methane yield of 79±2%. No significant effects were achieved in the BMP after thermochemical pr...

Dry anaerobic digestion has been treated as feasible process for potential renewable energy recovery with nutrient-rich fertilizer and sustainable solid waste management. Dry methane fermentation of undiluted cow manure (CM), waste water sludge (WWS) and their mixtures into different ratios were conducted at 35°C in the laboratory-scale single-stage batch reactors for 63 days. The specific biog...

Fossil fuel depletion, climate change, and increased global energy demands are the driving forces to find alternative sources of energy. Marine-based biorefinery has been recently discussed as a promising route mitigate environmental challenges, enhance recovery, provide potential source for value-added products. Anaerobic digestion is technology that can convert organic compounds marine ecosys...

In this study, predominant bacterial and archaeal populations their roles during anaerobic mono-digestion of food waste (FW) co-digestion FW with straw pellets (SP) at thermophilic temperature (53 ± 1 °C) were assessed by Next Generation Sequencing (NGS) analysis organic loading rates (OLRs) 3.0 7.0 gVS/L/d. Depending on the seed; results revealed that Firmicutes, Bacteroidetes, Proteobacteria ...

This is a pioneer study evaluating the methane (CH4) production potential from residues of integrated first (vinasse and filter cake) second (deacetylation pretreatment liquor straw) generation (1G2G) sugarcane biorefinery, providing fully chemical characterization them their relation with anaerobic digestion (AD) process. Small-scale assays provided fundamentals for basing co-digestion optimiz...

In this study, anaerobic co-digestion of dairy manure (DM) and potato waste (PW) was evaluated to determine the best mixing ratio in terms of biogas and methane (CH4) productions. Batch lab-scale anaerobic co-digestion of DM with PW was conducted at two different temperature ranges [mesophilic (MT) (35-37 oC) and thermophilic (TT) (55-57 oC)]. The tests were conducted at five DM:PW mixing ratio...