Improving energy balance of wastewater treatment plants using pre-treated coffee waste as a co-substrate in anaerobic digestion process.

Aleksandra Szaja, Agnieszka Montusiewicz, Rafał Panek, Iwona Musielewicz, Magdalena Lebiocka

Abstract read

In one paragraph

Article in Environmental science and pollution research international, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed

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1 · What the graph read from it

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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.

2 · The registry

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3 · Its place in the literature

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0 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Aleksandra SzajaDepartment of Biomass and Waste Conversion Into Biofuels, Faculty of Environmental Engineering and Energy, Lublin University of Technology, Nadbystrzycka St. 40B, Lublin, 20-618, Poland. a.szaja@pollub.pl.ORCID http://orcid.org/0000-0002-5007-5145

Agnieszka MontusiewiczDepartment of Biomass and Waste Conversion Into Biofuels, Faculty of Environmental Engineering and Energy, Lublin University of Technology, Nadbystrzycka St. 40B, Lublin, 20-618, Poland.

Rafał PanekDepartment of Building Materials Engineering and Geoengineering, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40, Lublin, 20-618, Poland.

Iwona MusielewiczDepartment of Biomass and Waste Conversion Into Biofuels, Faculty of Environmental Engineering and Energy, Lublin University of Technology, Nadbystrzycka St. 40B, Lublin, 20-618, Poland.

Magdalena LebiockaDepartment of Biomass and Waste Conversion Into Biofuels, Faculty of Environmental Engineering and Energy, Lublin University of Technology, Nadbystrzycka St. 40B, Lublin, 20-618, Poland.

Funding

Ministerstwo Edukacji i Nauki 2/GnG/2022

6 · The paper itself

Abstract

In this study, the strategy for improving energy balance of wastewater treatment plants using pre-treated coffee waste represented by coffee spent grains (SCG) as a co-substrate to sewage sludge (SS) was proposed. Hydrodynamic cavitation at a pressure of 5 bar with a duration of 20 and 30 min was chosen as a pre-treatment method. The anaerobic digestion was conducted in a batch system under mesophilic conditions; the substrate-to-inoculum ratio was 0.69-0.71. Two co-digestion series with cavitated SCG were provided, differing in terms of caffeine content. Moreover, the co-digestion series supplied with raw SCG and mono-digestion of SS were conducted as reference experiments. The obtained results indicated that, compared to SS mono-digestion, a significant yielding growth by 12% was found in the series supplied by a mixture of SS and SCG with the highest content of caffeine cavitated for 30 min. Therein, the methane yield was 462.3 ± 21.3 mLCH

Indexed as

CoffeeWaste Disposal, FluidWastewaterAnaerobiosisBioreactorsCaffeineMethaneSewageCaffeineCoffeeMethaneSewageWastewaterCoffee spent grainsEnergy efficiencyFourier transform infrared spectroscopy with attenuated total reflectance accessoryKineticsMethane productionScanning electron microscopy

Identifiers

PMID41498903

DOI10.1007/s11356-025-37346-8

PMCPMC12882860

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LicenceCC BY

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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.