Iron improving bio-char derived from microalgae on removal of tetracycline from aqueous system

TY - JOUR

T1 - Iron improving bio-char derived from microalgae on removal of tetracycline from aqueous system

AU - Peng, Liang

AU - Ren, Yanqing

AU - Gu, Jidong

AU - Qin, Pufeng

AU - Zeng, Qingru

AU - Shao, Jihai

AU - Lei, Ming

AU - Chai, Liyuan

PY - 2014/6

Y1 - 2014/6

N2 - Novel magnetic carbonaceous bio-char was hydrothermal prepared from microalgae under different loadings of iron and its structures and surface chemistry were characterized with Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and nitrogen adsorption-desorption isotherm (BET). The morphology of bio-char changed from sheet to particle as iron loading increased and its surface area also increased. When 3.0 g of dried microalgae and 6.0 mmol iron salt ((NH4)2SO4·FeSO4·6H2O) were mixed and treated, the obtained bio-char possessing the highest amount of oxygen-containing functional groups resulted in the best adsorption performance on tetracycline (TC). This adsorption process was fitted to Langmuir adsorption isotherm and the maximum adsorption capacity was 95.86 mg/g, which is higher than other bio-char reported. The iron loading contributed to the higher adsorption capacity of bio-char, which may be due to three factors, the high surface area, more hydrogen bonding, and bridging effects of the structural Fe for TC. Our data suggest that bio-char may have more important role in stabilization of pollutants in the environment.

AB - Novel magnetic carbonaceous bio-char was hydrothermal prepared from microalgae under different loadings of iron and its structures and surface chemistry were characterized with Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and nitrogen adsorption-desorption isotherm (BET). The morphology of bio-char changed from sheet to particle as iron loading increased and its surface area also increased. When 3.0 g of dried microalgae and 6.0 mmol iron salt ((NH4)2SO4·FeSO4·6H2O) were mixed and treated, the obtained bio-char possessing the highest amount of oxygen-containing functional groups resulted in the best adsorption performance on tetracycline (TC). This adsorption process was fitted to Langmuir adsorption isotherm and the maximum adsorption capacity was 95.86 mg/g, which is higher than other bio-char reported. The iron loading contributed to the higher adsorption capacity of bio-char, which may be due to three factors, the high surface area, more hydrogen bonding, and bridging effects of the structural Fe for TC. Our data suggest that bio-char may have more important role in stabilization of pollutants in the environment.

KW - Adsorption capacity

KW - Bio-char

KW - Iron

KW - Tetracycline

UR - http://www.scopus.com/inward/record.url?scp=84902553913&partnerID=8YFLogxK

U2 - 10.1007/s11356-014-2677-2

DO - 10.1007/s11356-014-2677-2

M3 - 文章

C2 - 24615003

AN - SCOPUS:84902553913

SN - 0944-1344

VL - 21

SP - 7631

EP - 7640

JO - Environmental Science and Pollution Research

JF - Environmental Science and Pollution Research

IS - 12

ER -