Modeling and optimization of anaerobic digestion of corn stover on biogas production: Initial pH and carbon to nitrogen ratio

Yao, Yan; Zhang, Rui; Wang, Benzhi; Zhang, Shuting

doi:10.1080/15567036.2017.1336821

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…They also exhibited lower and even imbalanced C/N ratios (10.6-12.3) that could have hindered their digestion. Adequate C/N ratios are found in a range of 15-30, thus lower values often result in a longer retention time, poor methane production or even digester failure [59]. In summary, the best performance for the digestion of VBU-WH in comparison to the others could be attributed to a more accessible, degradable, and balanced composition.…”

Section: Effect Of Biochar Loadmentioning

confidence: 96%

“…However, the larger content of protein and oils for UG-WH in comparison to the VBU-WH could have been detrimental to AD. A large protein content would result in more inhibitory ammonia released into the digestate, whereas the slower degradation rate of lipids leads to their accumulation, which is reported to block the mass transfer process for the methanogens [58,59]. The second-and third-best BMP producers were MM-WH and PV-WH, respectively.…”

Section: Effect Of Biochar Loadmentioning

confidence: 99%

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The Influence of Biochar Augmentation and Digestion Conditions on the Anaerobic Digestion of Water Hyacinth

et al. 2022

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The augmentation of biochar (BC) during anaerobic digestion (AD) has been identified as a potential strategy for improving the AD of complex feedstocks. This study evaluates the influence of oak wood biochar 450 °C and fermentation conditions during the AD of the invasive aquatic plant, water hyacinth (WH). Factorial 22 design of experiments (DOE) allowed the evaluation of the effect of the crucial processing conditions, inoculum-to-substrate ratio (ISR) and biochar load. Further optimisation was performed to identify the best processing conditions for the AD of WH, at an ideal ISR of 1. The contour plots suggested that methane yield is favoured at biochar loads of ≤0.5%, whereas the production rate is favoured by increasing biochar loads. However, biochar addition offered no further improvement or significant effect on the digestion of WH. The subsequent AD of WH samples collected from different locations in India and Uganda exhibited variable biochemical methane potential (BMP) yields. BC addition had little effect on BMP performance, and in some cases, it even reduced the BMP. This study concludes that the amendment potential of biochar is influenced by digestion conditions and the substrate, particularly when working with complex substrates.

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Section: Effect Of Biochar Loadmentioning

confidence: 96%

Section: Effect Of Biochar Loadmentioning

confidence: 99%

The Influence of Biochar Augmentation and Digestion Conditions on the Anaerobic Digestion of Water Hyacinth

et al. 2022

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“…Although optimizing these conditions maximizes biogas yields and addresses technological considerations for anaerobic digester design and operation, enhancing the overall energy yield of the biogas [53], anaerobic digester configurations (one-stage, two-stage, or multi-stage) can enhance the operation and management of the process. Such configurations involve either the hydrolysis/acidogenesis or acetogenesis/methanogenesis phases taking place in either a single digester or separate ones, as illustrated in Figure 4.…”

Section: Anaerobic Digestion and Biogas Productionmentioning

confidence: 99%

Enhancing Energy Efficiency and Resource Recovery in Wastewater Treatment Plants

Twi-Yeboah,

Osei,

Dontoh

et al. 2024

Energies

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This paper explores the significant role of Wastewater Treatment Plants (WWTPs) in achieving environmental sustainability, with a particular focus on enhancing energy efficiency, resource recovery, and water reuse. WWTPs are crucial for removing pollutants and recovering resources from wastewater, thereby protecting public health and biodiversity. However, they are also associated with high operational costs, substantial carbon footprints, and energy-intensive processes. This article delves into various strategies and technologies to overcome these challenges, aiming to transform WWTPs from energy consumers to energy-efficient resource recovery hubs. Techniques such as anaerobic digestion and the use of advanced oxidation processes and microbial fuel cells are investigated for their potential in energy recovery and efficiency enhancement. Success stories from around the globe are highlighted to demonstrate the feasibility of transitioning to energy-positive WWTP operations. The integration of water reuse systems is also discussed, highlighting recent advancements that enable treated wastewater to be repurposed for agricultural, industrial, and potable uses, thereby promoting sustainability and water conservation. This paper emphasizes the importance of integrating cutting-edge energy management practices to minimize environmental impacts, reduce operational costs, and contribute to a more sustainable water sector.

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“…Reports of improved methane yields of C. vulgaris in co-digestion with C-rich biomass have been attributed to adequate C/N ratios (Zhang et al, 2019). Adequate C/ N ratios are often found at 15-30, although the optimum value is highly dependent on the feedstock (Yao et al, 2017). For instance, the optimal C/N ratio varied for crops 20 (Piątek et al, 2016), corn stover 25 (Yao et al, 2017), algae 25-30 (Bohutskyi et al, 2018), and microalgae 20-25 (Yen and Brune, 2007).…”

Section: Introductionmentioning

confidence: 99%

Influence of augmentation of biochar during anaerobic co-digestion of Chlorella vulgaris and cellulose

Quintana-Najera

Blacker

Fletcher

et al. 2022

Bioresource Technology

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Modeling and optimization of anaerobic digestion of corn stover on biogas production: Initial pH and carbon to nitrogen ratio

Cited by 6 publications

References 11 publications

The Influence of Biochar Augmentation and Digestion Conditions on the Anaerobic Digestion of Water Hyacinth

The Influence of Biochar Augmentation and Digestion Conditions on the Anaerobic Digestion of Water Hyacinth

Enhancing Energy Efficiency and Resource Recovery in Wastewater Treatment Plants

Influence of augmentation of biochar during anaerobic co-digestion of Chlorella vulgaris and cellulose

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