The characteristics of oestrone mobility in water and soil by the addition of Ca-biochar and Fe–Mn-biochar derived from Litchi chinensis Sonn

• Published in: Environmental geochemistry and health Vol. 42; no. 6; pp. 1601 - 1615
• Main Authors: Tao, Huan-yu, Ge, Hui, Shi, Jianghong, Liu, Xiaowei, Guo, Wei, Zhang, Mengtao, Meng, Yaobin, Li, Xiao-yan
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.06.2020; Springer Nature B.V
• Subjects: Adsorption; Aqueous environments; Charcoal; Contaminants; Earth and Environmental Science; Environment; Environmental Chemistry; Environmental Health; Estrone; Geochemistry; Humic acids; Ionic strength; Iron; Leachates; Litchi chinensis; Manganese; Mobility; Original Paper; pH effects; Public Health; Soil; Soil amendment; Soil contamination; Soil investigations; Soil Science & Conservation; Soil water; Soils; Sorbents; Terrestrial Pollution; Transportation; Water pollution; Modified biochars; Advection–dispersion model; Adsorption; Oestrone
• ISSN: 0269-4042; 1573-2983
• DOI: 10.1007/s10653-019-00477-2

In this study, the effect of biochar (BC) derived from Litchi chinensis Sonn. and its modification, including Ca-biochar (Ca-BC) and Fe–Mn-biochar (Fe–Mn-BC), on the transportation of oestrone (E1) in water and soil was investigated. Fe–Mn-BC showed better adsorption ability than other types of biochar (BC, Ca-BC) under different conditions (humic acid, pH, ionic strength) in an aqueous environment. The maximum mass of sorbent at 298 K increased from 1.12 mg g −1 (BC) to 4.18 mg g −1 (Fe–Mn-BC). Humic acid had a greater impact on aqueous E1 adsorption on these biochars than did the pH and ionic strength. Fe–Mn-BC as a soil amendment had a great control of E1 transport in soil, and no leachate of E1 was observed in the column experiment. E1 mobility showed strong retardation in amended soil with Ca-BC ( R f  = 11.2) compared with raw soil ( R f  = 7.1). These results suggested that Fe–Mn-BC was more effective in controlling E1 transportation, and Fe–Mn-BC could be used as an alternative and inexpensive adsorbent to reduce E1 contaminants from water and soil. Graphic abstract