Methane production by anaerobic co-digestion of mixed agricultural waste: cabbage and cauliflower

Valorisation of eyewear bioplastics through HTC and anaerobic digestion: Preliminary results

“…Data collected allowed the determination of the daily biogas production (DBP), expressed as mL biogas /d, while cumulative data allowed the evaluation of the specific biogas production (SBP), reported as mL biogas /g VS added . Moreover, the percentage of biodegraded organic matter converted into methane was evaluated according to the method proposed by Beniche et al (2021).…”

“…By employing the methodology by Beniche et al (2021), we were able to assess that a complete biodegradation of the COD could not be achieved in any test. However, the biodegradability of the untreated CDA was 0% in mesophilic conditions and 4% in thermophilic conditions; a pre-treatment with HTC causes at least a threefold increase of this value, which respectively becomes 12%, 13% and 15% for M-OF, T-OF and M-WW.…”

The Valorization of Wastes and Byproducts from Cruciferous Vegetables: A Review on the Potential Utilization of Cabbage, Cauliflower, and Broccoli Byproducts

“…A study reported developing a large-scale novel vegetable waste recycling method involving thermostat anaerobic digestion followed by aerobic digestion, resulting in a digestate rich in N, P, and K elements; less heavy metals; and residuals of pesticides [54], while another study reported the effect of feed to microbe ratios (0.5-2.0) on the production of biogas and removal of organic matter from Chinese cabbage waste via anaerobic digestion [52]. The anaerobic co-digestion of cabbage and cauliflower waste has shown promising results, with high biodegradability, methane yield, and organic loading rates [51,55]. In contrast, high organic loading rates can reduce methane yield and energy conversion efficiency, leading to pH drops that are difficult to control during anaerobic digestion [56].…”

Effect of Alkali-NaOH Pretreatment on Methane Production from Anaerobic Digestion of Date Palm Waste

“…A bubbler contained a sodium hydroxide solution (NaOH) (6N) was used for CO 2 removal (6), and it was connected between the reactor and the gasmeter. The volume of methane is measured when the water moves from the cylindrical gasmeter, made of Pyrex, to a graduated tube by the water displacement method (7). The methane volume produced was daily measured using the graduated tube under the ambient condition of the room (8).…”

“…Anaerobic digestion (AD) is one of the biological processes that treat organic wastes, by degrading organic matter with a microbial ecosystem operating in the absence of oxygen (Karouach et al, 2021), and also resulted in waste Effect of Alkali-NaOH Pretreatment on Methane Production from Anaerobic Digestion of Date Palm Waste Nabila Lahboubi 1* , Fadoua Karouach 2 , Mohammed Bakraoui 2 , Yasser El Gnaoui 2 , Azzouz Essamri 1 , Hassan El Bari 2 reduction. The AD process produces two main products, the first one is biogas, which contains mostly methane and CO 2 (Beniche et al, 2020), and the second one is digestate which contains a large quantity of organic matter that cannot be fully degraded and can be used as a fertilizer in agriculture use (Juanga-Labayen et al, 2021). The biogas is considered as a renewable energy which does not produce air pollutants, nuclear waste or ashes (Lo et al, 2019).…”