Special Issue "Bioenergy Generation from Different Types of Waste by Anaerobic Digestion"

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "Bio-Energy".

Deadline for manuscript submissions: 31 October 2021.

Special Issue Editors

Dr. Agnieszka Pilarska
E-Mail Website1 Website2
Guest Editor
Department of Plant-Derived Food Technology, Poznań University of Life Sciences, ul. Wojska Polskiego 31, 60-624 Poznań, Poland
Interests: environmental engineering; waste management; anaerobic digestion; bioenergy production; cell carriers; cell immobilization; wastewater treatment; food chemistry
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Prof. Dr. Krzysztof Pilarski
E-Mail Website1 Website2
Guest Editor
Department of Biosystems Engineering, Poznań University of Life Sciences, ul. Wojska Polskiego 50, 60-627 Poznań, Poland
Interests: biogas; waste; anaerobic digestion; wastewater treatment; methane production; environment; water treatment; biodegradation
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

In view of the energy crisis and climate changes, the world is searching for sources of green energy to replace fossil fuels. Energy security, especially the supplying of renewable energy and reduction of CO2 emissions have become priorities in the energy policy. Thanks to biotechnologies based on anaerobic digestion (AD) it is possible to obtain biogas with high methane content, which can be used as an alternative source of energy. This is the main reason why this process has continued to interest scientists and energy companies for many years. In order to solve another civilisation problem, i.e. the production of large amounts of waste, various types of waste are often used as primary or additional biomass in the AD process. Anaerobic digestion is based not only on waste from agriculture, horticulture, forestry, food processing, and wood processing but also on municipal, packaging, medical, veterinary and chemical waste. The concept of zero liquid discharge (ZLD) is one of the methods to achieve sustainable development of bioenergy. The production of bioenergy from waste reduces lump waste generation and its dumping into land. This special issue focuses on recent advances in the conversion of waste to bioenergy, especially biogas and biohydrogen in the AD process. The number of articles on similar topics which are published each year shows the need to search for potential substrates, technological solutions and optimal conditions for the implementation of the AD process. In order to implement AD as a method of disposal of waste of various origin it is necessary to systematically broaden the knowledge about the physicochemical and biochemical nature of the process.

Keywords

  • waste management
  • waste composition
  • zero waste discharge
  • biomass
  • biogas
  • biomethane
  • biohydrogen
  • anaerobic digestion
  • process stability
  • process monitoring
  • bioreactor configurations
  • additives
  • microorganisms
  • organic loading rate
  • process monitoring
  • process efficiency

Published Papers (1 paper)

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Research

Article
Silica/Lignin Carrier as a Factor Increasing the Process Performance and Genetic Diversity of Microbial Communities in Laboratory-Scale Anaerobic Digesters
Energies 2021, 14(15), 4429; https://doi.org/10.3390/en14154429 (registering DOI) - 22 Jul 2021
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Abstract
The article aims to present results of research on anaerobic digestion (AD) of waste wafers (WF-control) and co-substrate system–waste wafers and cheese (WFC-control), combined with digested sewage sludge, as inoculum. The purpose of this paper is to confirm the outcome of adding silica/lignin [...] Read more.
The article aims to present results of research on anaerobic digestion (AD) of waste wafers (WF-control) and co-substrate system–waste wafers and cheese (WFC-control), combined with digested sewage sludge, as inoculum. The purpose of this paper is to confirm the outcome of adding silica/lignin (S/L; 4:1) material, as a microbial carrier, on the process performance and genetic diversity of microbial communities. The experiment was conducted in a laboratory under mesophilic conditions, in a periodical operation mode of bioreactors. Selected physicochemical parameters of the tested carrier, along with the microstructure and thermal stability, were determined. Substrates, batches and fermenting slurries were subjected to standard parameter analysis. As part of the conducted analysis, samples of fermented food were also tested for total bacterial count, dehydrogenase activity. Additionally, DNA extraction and next-generation sequencing (NGS) were carried out. As a result of the conducted study, an increase in the volume of produced biogas was recorded for samples fermented with S/L carrier: in the case of WF + S/L by 18.18% to a cumulative biogas yield of 833.35 m3 Mg−1 VS, and in the case of WFC + S/L by 17.49% to a yield of 950.64 m3 Mg−1 VS. The largest total bacterial count, during the process of dehydrogenase activity, was maintained in the WFC + S/L system. The largest bacterial biodiversity was recorded in samples fermented with the addition of cheese, both in the case of the control variant and in the variant when the carrier was used. In contrast, three phyla of bacteria Firmicutes, Proteobacteria and Actinobacteria predominated in all experimental facilities. Full article
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Silica/Lignin Carrier as a Factor Increasing the Process Performance and Genetic Diversity of Bacterial Community in Laboratory-Scale Anaerobic Digesters

Authors: Agnieszka A. Pilarska 1, Agnieszka Wolna-Maruwka 2, Alicja Niewiadomska 2, Krzysztof Pilarski 3, Mariusz Adamski 3, Aleksandra Grzyb 2, Jarosław Grządziel 4 and Anna Gałązka 4

Affiliations: 

1 Department of Plant-Derived Food Technology, Poznań University of Life Sciences, ul. Wojska Polskiego 31,  60-624 Poznań, Poland;

2 Department of General and Environmental Microbiology, Poznań University of Life Sciences, ul. Szydłowska 50, 60-656 Poznań, Poland;

3 Department of Biosystems Engineering, Poznań University of Life Sciences, ul. Wojska Polskiego 50, 60-627 Poznań, Poland;

4 Department of Agriculture Microbiology, Institute of Soil Science and Plant Cultivation – State Research Institute, ul. Czartoryskich 8, 24-100 Puławy, Poland.

Keywords: silica/lignin carrier; organic waste; anaerobic digestion; bacterial genetic diversity; proces performance.

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