Biochar Derived from Sewage Sludge as a Soil Amendment: The Impact of Pyrolysis Temperature on Product Characteristics Along with Heavy Metal Environmental Risk

IF 0.8 Q3 Engineering

Nanotechnologies in Russia Pub Date : 2024-10-29 DOI:10.1134/S2635167624600779

T. M. Bauer, V. A. Polyakov, T. M. Minkina, M. V. Kirichkov, M. A. Gritsai, Z. B. Namsaraev, V. D. Rajput

引用次数: 0

Abstract

The purpose of this research was to investigate the impact of pyrolysis temperature on the properties of biochars fabricated by sewage sludge. Increasing pyrolysis temperature from 300 to 900°С led to an increase of biochar pH between 8.4–11.8, ash content 60–75% as well as specific surface area 68–161 m² g^–1. At the same time, there were reduced H, O, C, S, N contents, the H/C and O/C ratios. An increase in pyrolysis temperature enhanced the content of metals in biochars and reduced their bioavailability. XRD analysis confirmed a higher degree of metal-containing phases of formation in biochar with increasing pyrolysis temperature.

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从污水污泥中提取生物炭作为土壤改良剂：热解温度对产品特性及重金属环境风险的影响

本研究旨在探讨热解温度对污水污泥制成的生物炭特性的影响。将热解温度从 300°С 提高到 900°С 后，生物炭的 pH 值在 8.4-11.8 之间，灰分含量增加了 60-75%，比表面积增加了 68-161 m2 g-1。同时，H、O、C、S、N 含量以及 H/C 和 O/C 比值也有所降低。热解温度的升高增加了生物沼渣中的金属含量，降低了其生物利用率。XRD 分析证实，随着热解温度的升高，生物炭中形成的含金属相的程度更高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nanotechnologies in Russia NANOSCIENCE & NANOTECHNOLOGY-

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： Nanobiotechnology Reports publishes interdisciplinary research articles on fundamental aspects of the structure and properties of nanoscale objects and nanomaterials, polymeric and bioorganic molecules, and supramolecular and biohybrid complexes, as well as articles that discuss technologies for their preparation and processing, and practical implementation of products, devices, and nature-like systems based on them. The journal publishes original articles and reviews that meet the highest scientific quality standards in the following areas of science and technology studies: self-organizing structures and nanoassemblies; nanostructures, including nanotubes; functional and structural nanomaterials; polymeric, bioorganic, and hybrid nanomaterials; devices and products based on nanomaterials and nanotechnology; nanobiology and genetics, and omics technologies; nanobiomedicine and nanopharmaceutics; nanoelectronics and neuromorphic computing systems; neurocognitive systems and technologies; nanophotonics; natural science methods in a study of cultural heritage items; metrology, standardization, and monitoring in nanotechnology.