The love-hate relationship of pyrolysis biochar and water: A perspective

被引：138

作者：

Das, Oisik ^{[1
]}

Sarmah, Ajit K. ^{[1
]}

机构：

[1] Univ Auckland, Dept Civil & Environm Engn, Auckland 1142, New Zealand

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2015年 / 512卷

关键词：

Biochar; Hydrophobicity; Water; Aliphatic groups; Pores; Surface area; TEMPERATURE; CAPACITY; SOIL;

D O I：

10.1016/j.scitotenv.2015.01.061

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Biochar is being considered for environmental sustainability by the scientific community and as a result is extensively investigated for various applications in agriculture, remediation and construction. Hence, a sound knowledge of biochar's physical and chemical properties is critical. However, the dynamics of biochar-water interaction remain ambiguous. We hypothesize that the hydrophobicity of a biochar made at low pyrolysis temperature is not permanent under water-rich conditions. Our results suggest that the aliphatic functional groups responsible for biochar's hydrophobicity are displaced when subjected to water which eventually increases the affinity of the biochar towards water. We envisage that commentary would stimulate researchers to investigate the biochar-water interaction in a new light and eventually help design a biochar which would be apt for their intended end use. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：682 / 685

页数：4

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