SynthesisWater environment research : a research publication of the Water Environment Federation2025
Meta-Analysis of Production of Volatile Fatty Acids From Waste Streams: Towards Creating Decision Support Tools for Process Optimization.
Synthesis in Water environment research : a research publication of the Water Environment Federation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed, 1 synthesis or guideline pooled it.
- Meta-Analysis of Production of Volatile Fatty Acids From Waste Streams: Towards Creating Decision Support Tools for Process Optimization.Water environment research : a research publication of the Water Environment Federation · 2025Pooled it
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
Abstract
After anaerobic digestion, the sludge in wastewater treatment plants encompasses biosolids and food waste entering the sewer systems through food waste grinders in the kitchen sinks, especially in North America. These digested biosolids and food waste are typically discarded in landfills or incinerated. However, producing volatile fatty acids (VFAs) through fermentation of this waste stream of sludge and food waste is a lucrative value chain to biosolids and food waste management. The co-fermentation of sludge and food waste enhances microbial diversity and provides optimal carbon:nitrogen ratio for VFA generation. However, variation in the source and composition of the food waste significantly impacts the fermentation efficiency. In this study, a meta-analysis of 107 studies from North America was performed to understand the correlation between operational parameters and their effects on VFA production to use it as a tool for process optimization. The 107 studies were selected out of 303 from the database of Scopus and Web of Science from the year 2000 to 2024. The included studies were original research articles with inclusive data on VFA production using food waste as a substrate. Initial substrate concentration was found to be a reliable predictor for VFA production, followed by temperature and pH. Substrate concentrations between 9 and 20 gCOD/L, coupled with temperatures around 25°C or lower and neutral to slightly acidic pH, were observed to create favorable conditions for microbial activity and VFA generation.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.