Details

Autor(en) / Beteiligte

• Du, Yuan-da
• Zhang, Xin-qian
• Shu, Li
• Feng, Yu
• Lv, Cui
• Liu, Hong-qiang
• Xu, Fei
• Wang, Qian
• Zhao, Cong-cong
• Kong, Qiang

Titel

Safety evaluation and ibuprofen removal via an Alternanthera philoxeroides-based biochar

Ist Teil von

• Environmental science and pollution research international, 2021-08, Vol.28 (30), p.40568-40586

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Pharmaceutical and personal care products (PPCPs) are a representative class of emerging contaminants. This study aimed to investigate the PPCP removal performance and application safety of a biochar fabricated using the invasive plant Alternanthera philoxeroides (APBC). According to scanning electron microscopy and pore size analyses, APBC exhibited a porous structure with a specific surface area of 857.5 m 2 /g. A Fourier transform infrared spectroscopy analysis indicated the presence of surface functional groups, including phosphorus-containing groups, C=O, C=C, and –OH. The adsorption experiment showed that the maximum removal efficiency of ibuprofen was 97% at an initial concentration of 10 mg/L and APBC dosage of 0.8 g/L. The adsorption kinetics were fitted by the pseudo-second-order model with the highest correlation coefficient ( R 2  = 0.9999). The adsorption isotherms were well described by the Freundlich model ( R 2  = 0.9896), which indicates a dominant multilayer adsorption. The maximum adsorption capacity of APBC was 172 mg/g. A toxicity evaluation, based on Chlorella pyrenoidosa and human epidermal BEAS-2B cells, was carried out using a spectrum analysis, thiazolyl blue tetrazolium bromide assay, and flow cytometry. The results of the above showed the low cytotoxicity of APBC and demonstrated its low toxicity in potential environmental applications.