Converting biowaste into sustainable bioenergy through various processes

Hasan, Mohd. Rahil; Anzar, Nigar; Sharma, Pramod; Malode, Shweta J.; Shetti, Nagaraj P.; Narang, Jagriti; Kakarla, Raghava Reddy

doi:10.1016/j.biteb.2023.101542

Cited by 19 publications

(2 citation statements)

References 118 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The shift toward renewable energy production is necessary and crucial. The valorization of agricultural residues for generating energy and recovering nutrients has recently gained ground as an effective sustainable solution (Rahil Hasan et al 2023).…”

Section: Introductionmentioning

confidence: 99%

Enhancing anaerobic degradation of corn stover residues and biogas production via rumen microorganisms

Makri,

Ntougias,

Melidis

2024

Preprint

View full text Add to dashboard Cite

Corn is one of the most common cultivations in Greece and worldwide. Raw materials like corn stover contain a remarkable amount of organic content, which could be transformed anaerobically into biogas, using as an alternative energy source. The development of efficient methods to overcome the limitations arisen from the nature of lignocellulosic biomass is a challenge since pretreatment is required to break down its complex structure. An economically-feasible biological approach to disrupt the structure of lignocellulosic materials, like corn stover, is through the valorization of hydrolytic potential of microbial communities present in rumen. Rumen microbiota has demonstrated the ability to break down lignocellulosic biomass. Thus, this work aims to enhance biogas production from corn stover residues using rumen fluid microbiota. The anaerobic digestibility of corn stover in BMP (Biochemical Methane Potential) tests and CSTR (continuous stirring tank reactors) was examined using rumen fluid as inoculum, in presence of control. Three organic loading rates (OLR), i.e. 1, 2, and 3 g VS/L.d, were tested, to define the optimum OLR for corn stover digestion. Moreover, experiments to define the optimum corn stover to rumen fluid ratio to optimize biogas production were carried out. Addition of rumen inoculum into the anaerobic digester at daily basis was found to be essential to enhance biogas production from corn stover. The optimum corn stover residues concentration in rumen fluid for optimum biogas production was 4% w/v. Addition of rumen fluid microbiota in the CSTR operating under various OLRs enhanced biogas production by 2–6.3 times.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhancing anaerobic degradation of corn stover residues and biogas production via rumen microorganisms

Makri,

Ntougias,

Melidis

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Among all fermentation products, VFAs was mainly focused on because they are the major fermentation projects during complex substrate fermentation without strong engineering intervention [5]. Although H 2 and bioalcohol were also targeted in some scenario, the production of H 2 and bioalcohol relied solely on saccharide substrates, limiting their substrate range and efficiency [6, 7]. VFAs have a higher market value than methane [8] and have a wide application.…”

Section: Introductionmentioning

confidence: 99%

Microbiome dynamics and products profiles of biowaste fermentation under different organic loads and additives

Zhu,

Li,

2023

Engineering in Life Sciences

View full text Add to dashboard Cite

Biowaste fermentation is a promising technology for low‐carbon print bioenergy and biochemical production. Although it is believed that the microbiome determines both the fermentation efficiency and the product profiles of biowastes, the explicit mechanisms of how microbial activity controls fermentation processes remained to be unexplored. The current study investigated the microbiome dynamics and fermentation product profiles of biowaste fermentation under different organic loads (5, 20, and 40 g‐VS/L) and with additives that potentially modulate the fermentation process via methanogenesis inhibition (2‐bromoethanesulfonate) or electron transfer promotion (i.e., reduced iron, magnetite iron, and activated carbon). The overall fermentation products yields were 440, 373 and 208 CH4‐eq/g‐VS for low‐, medium‐ and high‐load fermentation. For low‐ and medium‐load fermentation, volatile fatty acids (VFAs) were first accumulated and were gradually converted to methane. For high‐load fermentation, VFAs were the main fermentation products during the entire fermentation period, accounting for 62% of all products. 16S rRNA‐based analyses showed that both 2‐bromoethanesulfonate addition and increase of organic loads inhibited the activity of methanogens and promoted the activity of distinct VFA‐producing bacterial microbiomes. Moreover, the addition of activated carbon promoted the activity of H2‐producing Bacteroides, homoacetogenic Eubacteriaceae and methanogenic Methanosarcinaceae, whose activity dynamics during the fermentation led to changes in acetate and methane production. The current results unveiled mechanisms of microbiome activity dynamics shaping the biowaste fermentation product profiles and provided the fundamental basis for the development of microbiome‐guided engineering approaches to modulate biowaste fermentation toward high‐value product recovery.

show abstract

Valorization of Solid Waste Products from a Variety of Sectors in Wastewater Treatment Processes

El-Emam

2024

Springer Water

View full text Add to dashboard Cite

Converting biowaste into sustainable bioenergy through various processes

Cited by 19 publications

References 118 publications

Enhancing anaerobic degradation of corn stover residues and biogas production via rumen microorganisms

Enhancing anaerobic degradation of corn stover residues and biogas production via rumen microorganisms

Microbiome dynamics and products profiles of biowaste fermentation under different organic loads and additives

Valorization of Solid Waste Products from a Variety of Sectors in Wastewater Treatment Processes

Contact Info

Product

Resources

About