Effect of biochar addition on the OFMSW composting process under real conditions

Mateusz Malinowski , Katarzyna Wolny-Koładka , Magdalena Daria Vaverkova


The article evaluates the effect of small selected doses of biochar addition (0%, 1.5%, 3% and 5%, wet weight) on the composting process of the organic fraction of municipal solid waste (OFMSW) with a low initial C/N ratio under real conditions. The low C/N composting mixtures with addition of biochar at low rates can have a positive effect on the compost quality and on the reduction of N losses in compost. The novelty of this work consists in studying the impact of small biochar doses on the composting process at full-scale. The research was conducted under real conditions in the Brno Central Composting Plant (Czech Republic) receiving food waste, grass, straw, sawdust, mineral waste, paper, wood and sewage sludge for processing. The experimental processing time was 12 weeks. We evaluated changes in carbon (C), nitrogen (N), moisture content (MC), organic matter (OM), respiration activity (AT4), as well as changes in the microbiocenotic composition of microorganisms colonizing the processed waste. OFMSW with the addition of biochar and compost were assessed for the content of heavy metals (HM). It was found out that biochar reduced the compost toxicity. The resulting compost with the addition of biochar exhibited higher moisture content and lower waste density. Biochar had an impact on N retention during composting but it did not change the course or accelerate the composting process. The highest OM loss (62.6%) was observed in the OFMSW with no biochar addition. The abundance of potentially pathogenic microorganisms clearly decreased during the OFMSW composting process with the addition of biochar.
Author Mateusz Malinowski (FoPaPE / IoAEaI)
Mateusz Malinowski,,
- Institute of Agricultural Engineering and Informatics
, Katarzyna Wolny-Koładka (FoAaE / DoM)
Katarzyna Wolny-Koładka,,
- Department of Microbiology
, Magdalena Daria Vaverkova
Magdalena Daria Vaverkova,,
Journal seriesWaste Management, ISSN 0956-053X, (N/A 200 pkt)
Issue year2019
Publication size in sheets0.5
Keywords in EnglishOrganic waste Composting Biochar Microorganisms Phytotoxicity tests
ASJC Classification2311 Waste Management and Disposal
URL https://ac.els-cdn.com/S0956053X18307530/1-s2.0-S0956053X18307530-main.pdf?_tid=a79db365-5bb6-423a-9261-64b984978731&acdnat=1545377776_bc5590aa4dacecb72bef8c189b09a458
Internal identifierWIPiE/2019/5
Languageen angielski
Score (nominal)200
Score sourcejournalList
Publication indicators WoS Citations = 2; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 2.059; WoS Impact Factor: 2018 = 5.431 (2) - 2018=5.993 (5)
Citation count*
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Finansowanie:The research was financed from the sources of the Own Scholarchip Fund for scholarships for academic teachers of the University of Agriculture in Krakow (Poland). The scientific internship took place at the Mendel University in Brno (Czech Republik)
Udział procentowy:Mateusz Malinowski 40%, Katarzyna Wolny- Koładka 30%, Magdalena Daria Vaverkova 30%
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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