Feasibility of Old Bark and Wood Waste Recycling

The pulp and paper industry leads to the formation of significant amounts of bark and wood waste (BWW), which is mostly dumped, causing negative climate and environmental impacts. This article presents an overview of methods for recycling BWW, as well as the results of assessing the resource potenti...

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Bibliographic Details
Published in:Plants (Basel) 2022-06, Vol.11 (12), p.1549
Main Authors: Kulikova, Yuliya, Sukhikh, Stanislav, Babich, Olga, Yuliya, Margina, Krasnovskikh, Marina, Noskova, Svetlana
Format: Article
Language:English
Subjects:
Ash
Bark
bark waste
Biodegradation
biofuel
Biofuels
Biomass
Calorific value
Cellulose
Composting
Efficiency
Environmental impact
Feasibility
Gases
Gasification
Hardwoods
Humidity
hydrothermal methods
Landfill
Moisture content
Moisture effects
Pulp & paper industry
Pyrolysis
Recycling
Substrates
sustainable resources
Thermal analysis
Waste recycling
Water content
Wood waste
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Summary:The pulp and paper industry leads to the formation of significant amounts of bark and wood waste (BWW), which is mostly dumped, causing negative climate and environmental impacts. This article presents an overview of methods for recycling BWW, as well as the results of assessing the resource potential of old bark waste based on physicochemical and thermal analysis. It was found that using BWW as a plant-growing substrate is challenging because it was observed that bark waste is phytotoxic. The C:N waste ratio is far from optimum; moreover, it has a low biodegradation rate (less than 0.15% per year). The calorific value content of BWW ranged from 7.7 to 18.9 MJ/kg on d.m., the ash content was from 4% to 22%, and the initial moisture content was from 60.8% to 74.9%, which allowed us to draw conclusions about the feasibility of using hydrothermal methods for their processing to obtain biofuel and for the unreasonableness of using traditional thermal methods (combustion, pyrolysis, gasification).
ISSN:2223-7747
2223-7747
DOI:10.3390/plants11121549