Sorption of naphthalene and 1-naphthol by biochars of orange peels with different pyrolytic temperatures

被引：612

作者：

Chen, Baoliang ^{[1
]}

Chen, Zaiming ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Environm Sci, Hangzhou 310028, Zhejiang, Peoples R China

来源：

CHEMOSPHERE | 2009年 / 76卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Biochar; Orange peels; Organic pollutant; Adsorption; Partition; Wastewater treatment; BLACK CARBON; ORGANIC-COMPOUNDS; PHENANTHRENE SORPTION; AROMATIC-HYDROCARBONS; SEDIMENTS; ADSORPTION; REMOVAL; WOOD; CONTAMINANTS; MATTER;

D O I：

10.1016/j.chemosphere.2009.02.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Biochars, derived from biomass, are increasingly recognized as an environmental-friendly sorbent to abate organic pollutants. Sorption variations of biochars with their pyrolytic temperatures are evaluated. Nine biochars of orange peels with different pyrolytic temperatures (150-700 degrees C, referred as OP150-OP700) were characterized via elemental analysis, BET-N-2 surface area, and Fourier transform infrared spectroscopy. Sorption of naphthalene and 1-naphthol by the biochars in water are compared. Sorption isotherms varied from linear to Freundlich with increasing pyrolytic temperature. The respective contributions of adsorption and partition to total sorption were correlated with biochars' structural parameters. For OP150-OP600, sorption of 1-naphthol was significantly larger than naphthalene due to the former owning additional specific interactions. For I-naphthol with high concentrations, the OP200 exhibited the maximal sorption capacity due to its largest partition and high adsorption among nine biochars. For 1-naphthol with low concentrations and naphthalene, the OP700 displayed the maximal sorption capacity. These observations provide a reference to the use of biochars as engineered sorbents for environmental applications. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：127 / 133

页数：7

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