Results 31 to 40 of about 1,727 (175)

Advancements and Challenges in Second‐ and Third‐Generation Biofuels: A Comparative Analysis of Lignocellulosic and Algal Feedstocks

open access: yesSafety Science and Technology, EarlyView.
ABSTRACT Advanced biofuels derived from nonfood biomass are increasingly recognized as strategic components of low‐carbon energy systems, particularly for sectors where direct electrification remains difficult. Second‐generation biofuels from lignocellulosic residues and third‐generation biofuels from algal and aquatic biomass offer complementary ...
Majid Saidi, Amirreza Ahmadbozorgi
wiley   +1 more source

Occurrence, Fate, and Implications of Heavy Metals during Anaerobic Digestion: A Review

open access: yesEnergies, 2022
Over the years, anaerobic digestion (AD) has evolved as a competent technology to retrieve energy potential from various organic substrates, including wastewater.
Rahul Kadam   +4 more
doaj   +1 more source

The effect of pretreatment on VFA production from tofu and tempeh wastewater through anaerobic digestion batch

open access: yesBiofuels, Bioproducts and Biorefining, Volume 20, Issue 4, Page 1743-1761, July/August 2026.
Abstract Tofu and tempeh, derived from soybeans, are widely consumed for their nutritional value and high protein content. However, the production of these foods generates nutrient‐rich wastewater that poses environmental challenges while offering opportunities for valorization.
Lydia Mawar Ningsih   +3 more
wiley   +1 more source

Enhanced Biohydrogen Production with Increasing Ammonia Nitrogen during Co-digestion of Swine Wastewater and Food Waste leachate [PDF]

open access: yes대한환경공학회지
This study investigated the effects of ammonia nitrogen (NH3–N) concentration and the COD/NH3–N ratio on biohydrogen production during the acidogenesis phase of co-digestion with swine wastewater and food waste leachate. Acidogenic sludge obtained from a
So Hyeon Choi   +2 more
doaj   +1 more source

Elucidate microbial characteristics in a full-scale treatment plant for offshore oil produced wastewater.

open access: yesPLoS ONE, 2021
Oil-produced wastewater treatment plants, especially those involving biological treatment processes, harbor rich and diverse microbes. However, knowledge of microbial ecology and microbial interactions determining the efficiency of plants for oil ...
Shuyuan Deng   +11 more
doaj   +1 more source

Waste to Hydrogen: Transforming Food Waste Into Biohythane (Bio‐H2 + Bio‐CH4) in a Two‐Stage Reactor With the Aid of a Metal‐Ion Catalyst

open access: yesEnergy Science &Engineering, Volume 14, Issue 7, Page 3388-3421, July 2026.
This study demonstrates a two‐stage catalytic bioreactor system that converts real food waste into high‐purity biohydrogen and biohythane. In Stage‐1, an enriched Clostridium thermocellum culture combined with Ni2+─Fe2+ bimetallic catalysis enhances hydrolysis efficiency and hydrogenase activity, resulting in a 77% increase in H2 yield and 75.8% purity
K. V. Sreedharan   +5 more
wiley   +1 more source

Genotypic Diversity and Virulence Traits of Streptococcus mutans Isolated from Carious Dentin after Partial Caries Removal and Sealing

open access: yesThe Scientific World Journal, 2014
The aim of this study was to compare the genotypic diversity and virulence traits of Streptococcus mutans isolated from carious dentin before and after partial dentin caries removal (PDR) and sealing.
Nailê Damé-Teixeira   +3 more
doaj   +1 more source

Hybrid electrosynthesis as non‐genetic approach for regulating microbial metabolism towards waste valorization in circular framework

open access: yesMicrobial Biotechnology, 2023
Biogenic waste (solid/liquid/gaseous) utilization in biological processes has disruptive potential of inclining towards carbon neutrality, while producing diverse products output.
J. Shanthi Sravan, S. Venkata Mohan
doaj   +1 more source

Strain‐Specific Biotransformation of Grape Marc by Lactic Acid Bacteria: Genomic Validation and Gut Microbiota Modulation

open access: yesFood Frontiers, Volume 7, Issue 4, July 2026.
ABSTRACT Grape marc (GM) is a polyphenol‐rich winery byproduct that remains underutilized due to its complex fiber matrix, which limits the bioaccessibility of bound phenolics. While lactic acid fermentation (LAF) can enhance the release of these compounds, the strain‐specific metabolic fate of GM phenolics during digestion and colonic fermentation ...
Ziyao Liu   +4 more
wiley   +1 more source

Direct interspecies electron transfer enables anaerobic oxidation of sulfide to elemental sulfur coupled with CO2-reducing methanogenesis

open access: yesiScience, 2023
Summary: Electric syntrophy between fatty acid oxidizers and methanogens through direct interspecies electron transfer (DIET) is essential for balancing acidogenesis and methanogenesis in anaerobic digestion.
Heejung Jung, Hyeonjung Yu, Changsoo Lee
doaj   +1 more source

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