Production and properties assessment of biochars from rapeseed and poplar waste biomass for environmental applications in Romania

Biochar obtained by pyrolysis is receiving great research interest as it is perceived to be a renewable resource available for agronomic and environmental applications. Since biochar is a highly heterogeneous material with chemical composition that varies widely depending on feedstock and pyrolysis...

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Veröffentlicht in:Environmental geochemistry and health 2022-06, Vol.44 (6), p.1683-1696
Hauptverfasser: Gheorghe-Bulmau, Cora, Volceanov, Adrian, Stanciulescu, Iustina, Ionescu, Gabriela, Marculescu, Cosmin, Radoiu, Marilena
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container_issue 6
container_start_page 1683
container_title Environmental geochemistry and health
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creator Gheorghe-Bulmau, Cora
Volceanov, Adrian
Stanciulescu, Iustina
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Marculescu, Cosmin
Radoiu, Marilena
description Biochar obtained by pyrolysis is receiving great research interest as it is perceived to be a renewable resource available for agronomic and environmental applications. Since biochar is a highly heterogeneous material with chemical composition that varies widely depending on feedstock and pyrolysis conditions, this study compares the characteristics of biochar produced by pyrolysis at six temperature levels ranging between 300 and 800 °C of two types of biomass, i.e. rapeseed straw (RS)—agriculture waste and poplar tree shavings (PP)—forest waste from furniture making. Twelve biochars were generated via pyrolysis under low oxygen conditions of the selected biomasses in an electrically heated batch reactor. To determine how pyrolysis temperature affects the properties of biochars and consequently their possible utilization, physical, chemical, thermal, porosity and EDX analysis were measured for all biochars and for the corresponding feedstocks. SEM images of the biochar revealed that an increase in temperature led to a higher number of pores for PP biochar compared to RS biochar, and that PP biochar pores tended to shrink with temperature. The elemental composition and the pH of biochars were also compared. Based on the experimental results a utilization matrix was designed as to offer indications concerning possible applications of RS and PP biochars in substitution to fossil derived products for soil remediation ( e.g., agriculture fertilizers) and in environmental applications ( e.g., removal of pollutants). Graphic abstract
doi_str_mv 10.1007/s10653-021-01061-3
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subjects Agricultural wastes
Agriculture
Agrochemicals
Batch reactors
Biomass
Brassica napus
Carbon
Charcoal
Charcoal - chemistry
Chemical composition
Climate change
Earth and Environmental Science
Environment
Environmental Chemistry
Environmental Health
Environmental management
Fertilizers
Forestry wastes
Fossils
Geochemistry
Original Paper
Pollutant removal
Pollutants
Poplar
Pores
Porosity
Porous materials
Properties
Public Health
Pyrolysis
Rapeseed
Raw materials
Renewable resources
Resource management
Romania
Shavings
Soil - chemistry
Soil fertility
Soil porosity
Soil remediation
Soil Science & Conservation
Temperature
Terrestrial Pollution
Thermal utilization
title Production and properties assessment of biochars from rapeseed and poplar waste biomass for environmental applications in Romania
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