TY - JOUR
T1 - Mechanistic insight into efficient removal of tetracycline from water by Fe/graphene
AU - Alatalo, Sara Maaria
AU - Daneshvar, Ehsan
AU - Kinnunen, Niko
AU - Meščeriakovas, Arūnas
AU - Thangaraj, Senthil K.
AU - Jänis, Janne
AU - Tsang, Daniel C.W.
AU - Bhatnagar, Amit
AU - Lähde, Anna
PY - 2019/10/1
Y1 - 2019/10/1
N2 - The release of pharmaceuticals into aquatic environments is a serious concern due to the persistence and potential health and environmental risks of these substances. Surface and ground waters are polluted with a variety of pharmaceuticals due to insufficient water purification processes in wastewater treatment plants. Here, we report a simple procedure for the production of composite materials consisting of zero-valent iron embedded in few-layer graphene, Fe/graphene, through induction annealing at 900 °C. Zero-valent iron was observed as magnetic 1 µm-sized crystals embedded in the graphene matrix appearing in the α- and γ-forms. This Fe/graphene composite was applied as an adsorbent for the removal of tetracycline (a pharmaceutical) from water. The Fe/graphene showed high tetracycline removal efficiency (422 mg/g) under optimized conditions. Furthermore, the Fe/graphene possessed self-regenerating features prolonging its lifetime and total removal capacity up to 660 mg/g, thus making it a potential material for removing tetracycline from water.
AB - The release of pharmaceuticals into aquatic environments is a serious concern due to the persistence and potential health and environmental risks of these substances. Surface and ground waters are polluted with a variety of pharmaceuticals due to insufficient water purification processes in wastewater treatment plants. Here, we report a simple procedure for the production of composite materials consisting of zero-valent iron embedded in few-layer graphene, Fe/graphene, through induction annealing at 900 °C. Zero-valent iron was observed as magnetic 1 µm-sized crystals embedded in the graphene matrix appearing in the α- and γ-forms. This Fe/graphene composite was applied as an adsorbent for the removal of tetracycline (a pharmaceutical) from water. The Fe/graphene showed high tetracycline removal efficiency (422 mg/g) under optimized conditions. Furthermore, the Fe/graphene possessed self-regenerating features prolonging its lifetime and total removal capacity up to 660 mg/g, thus making it a potential material for removing tetracycline from water.
KW - Adsorption
KW - Carburization
KW - Graphene
KW - Tetracycline
KW - Water treatment
KW - Zero-valent iron
UR - http://www.scopus.com/inward/record.url?scp=85065896655&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2019.05.118
DO - 10.1016/j.cej.2019.05.118
M3 - Journal article
AN - SCOPUS:85065896655
SN - 1385-8947
VL - 373
SP - 821
EP - 830
JO - Chemical Engineering Journal and the Biochemical Engineering Journal
JF - Chemical Engineering Journal and the Biochemical Engineering Journal
ER -