J 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

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.