2019
Simultaneous remediation of sediments contaminated with sulfamethoxazole and cadmium using magnesium-modified biochar derived from Thalia dealbata
TAO, Qi; Bing LI; Qiquam LI; Xuan HAN; Yin JIANG et al.Základní údaje
Originální název
Simultaneous remediation of sediments contaminated with sulfamethoxazole and cadmium using magnesium-modified biochar derived from Thalia dealbata
Autoři
TAO, Qi; Bing LI; Qiquam LI; Xuan HAN; Yin JIANG; Radek JUPA; Changquan WANG a Tingqiang LI
Vydání
Science of the Total Environment, Amsterdam, Elsevier Science, 2019, 0048-9697
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10611 Plant sciences, botany
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 6.551
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/19:00109261
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Cadmium; Magnesium-modified biochar; Phytotoxicity; Remediation; Sediment; Sulfamethoxazole
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 17. 3. 2020 11:29, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
In situ remediation and assessment of sediments contaminated with both antibiotics and heavy metals remains a technological challenge. In this study, MgCl2-modified biochar (BCM) was obtained at 500 degrees C through slow pyrolysis of Thalia dealbata and used for remediation of sediments contaminated by sulfamethoxazole (SMX) and Cd. The BCM showed greater surface area (110.6 m(2) g(-1)) than pristine biochar (BC, 7.1 m(2) g(-1)). The SMX sorption data were well described by Freundlich model while Langmuir model was better for the Cd2+ sorption data. The addition of 5.0% BCM significantly increased the sorption of SMX (by 50.8-58.6%) and Cd (by 24.2-25.6%) on sediments in both single and binary systems as compared with 5.0% BC. SMX sorption in sediments was significantly improved by addition of Cd2+, whereas SMX has no influence on Cd sorption on sediments. The addition of BCM distinctly decreased both SMX (by 51.4-87.2%) and Cd concentrations (by 56.2-91.3%) in overlying water, as well as in TCLP extracts (by 55.6-86.1% and 58.2-91.9% for SMX and Cd, respectively), as compared with sediments without biochar. Both germination rate and root length of pakchoi increased with increasing doses of BCM in contaminated sediments, 5.0% BCM showed greater promotion on pakchoi growth than 5.0% BC. Overall, BCM in the sediments does not only decrease the bioavailability of SMX and Cd, but it also diminishes the phytotoxicity, and thereby shows great application potential for in situ remediation of sediments polluted with antibiotics and heavy metals. (c) 2018 Elsevier B.V. All rights reserved.