Ecotoxicological characterization of engineered biochars produced from different feedstock and temperatures

被引:16
作者
Marcinczyk, Marta [1 ]
Krasucka, Patrycja [1 ]
Duan, Wenyan [2 ]
Pan, Bo [2 ]
Siatecka, Anna [3 ]
Oleszczuk, Patryk [1 ]
机构
[1] Marie Curie Sklodowska Univ, Fac Chem, Dept Radiochem & Environm Chem, 3 Maria Curie Sklodowska Sq, PL-20031 Lublin, Poland
[2] Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Peoples R China
[3] Univ Life Sci, Fac Food Sci & Biotechnol, Dept Chem, 15 Akad St, PL-20950 Lublin, Poland
关键词
Composite; Ecotoxicology; Metal modi fication; Zinc; Magnesium; Toxicity; POLYCYCLIC AROMATIC-HYDROCARBONS; PERSISTENT FREE-RADICALS; FOLSOMIA-CANDIDA COLLEMBOLA; SEWAGE-SLUDGE; PYROLYSIS TEMPERATURE; BIOMASS TYPES; ADSORPTION; MAGNESIUM; PHENANTHRENE; PAHS;
D O I
10.1016/j.scitotenv.2022.160640
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Biochar (BC) engineering, which has recently gained a lot of interest, allows designing the functional materials. BC modification improves the properties of pristine biochar, especially in terms of adsorption parameters. An interesting type of modification is the introduction of metals into the BC's structure. There is a knowledge gap regarding the effects of modified BC (e.g., BC-Mg, BC-Zn) on organisms. The aim of this study was the ecotoxicological evaluation of BC-Mg and BC-Zn composites, received under diverse conditions from willow or sewage sludge at 500 or 700 degrees C. The ecotoxicological tests with bacteria Vibrio fischeri (V. fischeri) and invertebrates Folsomia candida (F. candida) were applied to determine the toxicity of BC. The content of toxic substances (e.g., polycyclic aromatic hydrocarbons (PAHs), heavy metals (HMs), environmentally persistent free radicals (EPFRs)) in BC were also determined and compared with ecotoxicological parameters. The ecotoxicity of studied BCs depends on many variables: feedstock type, pyrolysis temperature and the modification type. The Zn and Mg modification reduced (from 28 to 63 %) the total 116 PAHs content in willow-derived BCs while in SL-derived BCs the total 116 PAHs content was even 1.5-3 times higher compared to pristine BCs. The Zn modified willow-derived BCs affected positively on F. candida reproduction but showed inhibition of luminescence V. fischeri. BC-Mg exhibited harmful effect to F. candida. The ecotoxicological assessment carried out sheds light on the potential toxicity of BC-Zn and BC-Mg composites, which are widely used in the removal of heavy metals, pharmaceuticals, dyes from waters and soils.
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页数:10
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