Predicting the effects of integrating mineral wastes in anaerobic digestion of OFMSW using first-order and Gompertz models from biomethane potential assays

Shamurad, Burhan; Gray, Neil; Petropoulos, Evangelos; Tabraiz, Shamas; Ma, Edward; Sallis, Paul J.

doi:10.1016/j.renene.2020.01.067

Cited by 28 publications

(11 citation statements)

References 42 publications

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“…The damage growth was found to exhibit typical S-shape growth, which can be understood as being associated with the development of microcracks and micropores. An S Gompertz (SG) growth model was employed to model the damage growth. , …”

Section: Resultsmentioning

confidence: 99%

Relationship between Shale Hydration and Shale Collapse

et al. 2022

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Shale gas has become the major source of natural gas. However, shale is rich in clay and easily collapsed by water invasion. This not only causes collapse of the reservoir but also causes the loss of natural gas and can even cause local earthquakes and affect the safety of human beings. This paper describes an investigation of the relationship between hydration and collapse. Shale samples were obtained from a series of wells drilled in the lower Silurian Longmaxi Formation at a depth of 3500 m. The different hydrated shales were simulated to analyze the hydration−collapse relationship. Magnetic resonance analysis and mechanical analysis were combined to analyze the collapse of the hydrated shales. The collapse progression was found to follow an S-shaped growth curve that can be divided into three parts, namely, the potential period, the exciting period, and the mature period. The hydration state and degree of damage were determined from the magnetic resonance of water molecules. This paper proposes a mechanism for shale hydration collapse based on basal and numerical data that can be used to predict shale collapse as a function of hydration.

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Section: Resultsmentioning

confidence: 99%

Relationship between Shale Hydration and Shale Collapse

et al. 2022

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“…Biogas was collected in 5 L (for days 1–40) and 10 L (for days 41–80) gasbags (Tedlar, VWR) with volumes measured daily. The methane content of the biogas and the physicochemical parameters of the digestate samples removed from the reactors were measured, as described previously. , The physicochemical parameters included pH, total solids (TS), total volatile solids (VS), total soluble chemical oxygen demand (total sCOD), total and individual VFAs, total Kjeldahl nitrogen (TKN), and total NH 3 -N (TAN) measured in triplicates according to the APHA standard methods…”

Section: Methodsmentioning

confidence: 99%

Low-Temperature Pretreatment of Organic Feedstocks with Selected Mineral Wastes Sustains Anaerobic Digestion Stability through Trace Metal Release

Shamurad

Gray

Petropoulos

et al. 2020

Environ. Sci. Technol.

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A low-cost approach for enhancing mesophilic (37 °C) anaerobic digestion (AD) of organic waste using a lowtemperature (37 °C) pretreatment with different mineral wastes (MW) was investigated. A higher and stable methane production rate, in comparison to MW-free controls, was achieved for 80 days at organic loading rates of 1−2 g VS/L•d, using a feed substrate pretreated with incinerator bottom ash (IBA). The boiler ash and cement-based waste pretreatments also produced high methane production rates but with some process instability. In contrast, an incinerator fly ash pretreatment showed a progressive decrease in methane production rates and poor process stability, leading to reactor failure after 40 days. To avoid process instability and/or reactor failure, two metrics had to be met: (a) a methanogenesis to fermentation ratio higher than 0.6 and (b) a cell-specific methanogenic activity to cell-specific fermentation activity ratio of >1000. The prevalence of Methanofastidiosum together with a mixed community of acetoclastic (Methanosaeta) and hydrogenotrophic (Methanobacterium) methanogens in the stable IBA treatment indicated the importance of Methanofastidiosum as a potential indicator of a healthy and stable reactor.

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“…However, the required amount of each metal and its function are still not well understood. In their study, Shamurad et al (2020) found that trace metals, including Fe, Co, and Ni, were required for acetogens to produce metalloenzymes which are used for producing formate dehydrogenase and carbon monoxide dehydrogenase. They also indicated that all methanogens would need nickel for the synthesis of cofactor F 430 to produce methane (Shamurad et al, 2020).…”

Section: Additivesmentioning

confidence: 99%

“…In their study, Shamurad et al (2020) found that trace metals, including Fe, Co, and Ni, were required for acetogens to produce metalloenzymes which are used for producing formate dehydrogenase and carbon monoxide dehydrogenase. They also indicated that all methanogens would need nickel for the synthesis of cofactor F 430 to produce methane (Shamurad et al, 2020). Trace nutrients, such as vitamins (cobalamin), would also enhance the activity of enzymes in an AD system, thereby accelerating the biosynthesis of CH 4 .…”

Section: Additivesmentioning

confidence: 99%

Anaerobic co-digestion of agricultural wastes toward circular bioeconomy

et al. 2021

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Summary A huge amount of agricultural wastes and waste activated-sludge are being generated every year around the world. Anaerobic co-digestion (AcD) has been considered as an alternative for the utilization of organic matters from such organic wastes by producing bioenergy and biochemicals to realize a circular bioeconomy. Despite recent advancement in AcD processes, the effect of feedstock compositions and operating conditions on the biomethane production processe has not been critically explored. In this paper, we have reviewed the effects of feedstock (organic wastes) characteristics, including particle size, carbon-to-nitrogen ratio, and pretreatment options, on the performance of an anaerobic digestion process. In addition, we provided an overview of the effect of key control parameters, including retention time, temperature, pH of digestate, volatile fatty acids content, total solids content, and organic loading rate. Lastly, based on the findings from the literature, we have presented several perspectives and prospects on priority research to promote AcD to a steppingstone for a circular bioeconomy.

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Predicting the effects of integrating mineral wastes in anaerobic digestion of OFMSW using first-order and Gompertz models from biomethane potential assays

Cited by 28 publications

References 42 publications

Relationship between Shale Hydration and Shale Collapse

Relationship between Shale Hydration and Shale Collapse

Low-Temperature Pretreatment of Organic Feedstocks with Selected Mineral Wastes Sustains Anaerobic Digestion Stability through Trace Metal Release

Anaerobic co-digestion of agricultural wastes toward circular bioeconomy

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