Enhancing the hydrolysis step in anaerobic digestion of municipal solid waste using rumen fluid

Ganesh, Gautam; Karthikeyan, Obulisamy Parthiba; Joseph, Kurian

doi:10.1504/ijetm.2010.038010

Cited by 4 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A study investigating the degradation of municipal solid waste in leaching trials was performed whilst adding rumen fluid daily and on alternating days [14]. The addition of rumen fluid was found to enhance the hydrolysis efficiency.…”

Section: Effect Of Particle Size and Rumen Fluid Addition In Grass Simentioning

confidence: 99%

Investigating two-phase digestion of grass silage for demand-driven biogas applications: Effect of particle size and rumen fluid addition

et al. 2016

View full text Add to dashboard Cite

a b s t r a c tHigh lignocellulose content grass silage was investigated for two-phase digestion (leaching followed by upflow anaerobic sludge blanket (UASB)) for application to demand-driven biogas production. Leaching trials were undertaken investigating the effects of particle size reduction and rumen fluid addition on the hydrolysis and acidogenesis phases. Reducing grass silage particle size to <1 cm was not suited to leaching as particles could not be fully entrained in the system; this was not an issue at >3 cm particle size. Rumen fluid addition increased production of volatile fatty acids (VFA) but reduced pH levels, which subsequently hindered hydrolysis of volatile solids (VS). When electricity demand is low, it is recommended to operate in leach only mode with grass silage particle size >3 cm and with rumen fluid addition; this limits VS destruction to 30% while maintaining a high VFA yield. When electricity demand is high, connection of the UASB generates 61% destruction of VS maximising biogas production. Operation of the SLBR-UASB achieves lower specific methane yields than traditional single-stage digestion but may offer advantages in demand driven biogas systems.

show abstract

Section: Effect Of Particle Size and Rumen Fluid Addition In Grass Simentioning

confidence: 99%

Investigating two-phase digestion of grass silage for demand-driven biogas applications: Effect of particle size and rumen fluid addition

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The addition of consortium to AD resulted in a 55% increase in methane production under mesophillic conditions. Furthermore, rumen fluid was also investigated for enhancing the hydrolysis of MSW in bench scale reactor (Ganesh et al, 2010). Rumen fluid (3, 5, and 10% v/v) was added daily and on alternate days.…”

Section: Additives For Enhancing Enzymatic Activitymentioning

confidence: 99%

Additives as a Support Structure for Specific Biochemical Activity Boosts in Anaerobic Digestion: A Review

et al. 2020

View full text Add to dashboard Cite

Anaerobic digestion is an attractive technology for resource management of organic waste and stubble. The state of biochemical reactions and activities in anaerobic digestion determines the process stability. Biochemical activities, such as syntrophic, metabolic, catalytic, and enzymatic activities, regulate the anaerobic efficiency for improved methane yield. Inhibitors, such as access to volatile fatty acids, ammonia, sulfur, and heavy metals, may slow down the anaerobic digestion and may cause reactor failure. However, additives for various biochemical activities may help to diminish the effect of inhibitors as well as improve process stability for enhanced methane yield. This manuscript presents an overview of various additives for enhancing the biochemical activities. The overview consists of the application of (a) conductive material for improving syntrophic activity, (b) trace metals for metabolic activities, (c) nanoparticles for improving catalytic activity, metabolism, and symbiosis during AD, (d) biological additives for enzymatic action, and (e) application of zeolite for introducing cation exchange properties in anaerobic digestion. Also, a comparison of various additives as per biochemical activity has also been performed for a deeper insight into the application of additives in anaerobic digestion.

show abstract

“…But serious operational problems are encountered when MSW or other biodegradable solid waste (such as leaf litter, weeds, vegetable and fruit peels, food waste) is to be processed by anaerobic digestion [7,64,67]. Feeding such a waste and ensuring its digestion and the movement of the digested product out of the reactor are all besieged with problems because, unlike liquid waste which can be easily homogenated and which moves through reactors easily, solid waste creates major difficulties in mass transport [7].…”

Section: Anaerobic Digestion Of Mswmentioning

confidence: 99%

The myth and the reality of energy recovery from municipal solid waste

Abbasi

2018

Energ Sustain Soc

View full text Add to dashboard Cite

Background: Any manner of development can be sustainable only if the waste generated by it is not allowed to accumulate but is fully reused/recycled/recovered. Among the strategies to attain this goal have been the attempts to recover energy from municipal solid waste (MSW). About 60% of MSW is carbonaceous, consisting of materials which can either be biodegraded into fuels like methane or incinerated, thereby generating utilizable energy. MSW also contains several components-like metallic scrap and glass pieces-which can be reused or recycled, thereby achieving energy conservation. Given these attributes, MSW appears to be a potential source of energy and resources. Indeed, this belief that MSW is usable if only we try sincerely enough to do so prompts most of us to keep generating much more MSW than is warranted. But how realizable really is the energy potential of MSW? What perils loom into view when we actually set out to utilize MSW as an energy source? The present study addresses these crucially important questions. Methods: The work is based on a critical content analysis of the prior art. Results: The generation of MSW has consistently outpaced the world's efforts to dispose of it cleanly, and the energy (and material) recovery from MSW is easier said than done. In most instances, what is technically feasible is economically unfeasible. And what is economically feasible-such as setting the waste on fire as is often done in developing countries-is exceedingly harmful to the environment and the human health. Measures such as sanitary landfilling and incineration create as many new problems as the old ones they solve. Moreover, despite the use of these less-than-adequate technologies, a major portion of MSW generated in the world lies untreated. Conclusions: As the MSW output is expected to double by 2025, this situation is only set to become worse. Rising tides of E-waste would compound the problem even further. Hence, enormous stress should be put on the reduction of MSW generation by controlling wanton consumerism and wastage, rather than continuing with it in the false hope that technology will soon provide a magical solution and eliminate the problem.

show abstract

Enhancing the hydrolysis step in anaerobic digestion of municipal solid waste using rumen fluid

Cited by 4 publications

References 9 publications

Investigating two-phase digestion of grass silage for demand-driven biogas applications: Effect of particle size and rumen fluid addition

Investigating two-phase digestion of grass silage for demand-driven biogas applications: Effect of particle size and rumen fluid addition

Additives as a Support Structure for Specific Biochemical Activity Boosts in Anaerobic Digestion: A Review

The myth and the reality of energy recovery from municipal solid waste

Contact Info

Product

Resources

About