title: Regeneration of magnetic biochar derived from eucalyptus leaf residue for lead(II) removal.
abstract: Regeneration of Pb-loaded magnetic biochar prepared with eucalypts leaf residue was studied by using EDTA-2Na as a regenerant. The desorption efficiency was found to be 84.1% in 120 min with iron leaching amount of 1.1 mg g(-1). Higher SBET and pore volume were observed in regenerated magnetic biochars and no significant band shifts occurred in FTIR spectra during 6 regeneration cycles. The decrease of Pb(II) adsorption capacity (from 52.4 to 41.5 mg g(-1)) was only found in the first regeneration cycle. Magnetic separation performance of adsorbents was not significantly affected by multiple regeneration cycles.
authors: College of Environmental Science and Engineering, Guangxi University, Nanning 530004, China.
authors: Sheng-Ye
authors: SY
authors: Wang
authors: College of Environmental Science and Engineering, Guangxi University, Nanning 530004, China. Electronic address: tangyankui101@163.com.
authors: Yan-Kui
authors: YK
authors: Tang
authors: College of Environmental Science and Engineering, Guangxi University, Nanning 530004, China.
authors: Cheng
authors: C
authors: Chen
authors: College of Environmental Science and Engineering, Guangxi University, Nanning 530004, China.
authors: Jin-Tao
authors: JT
authors: Wu
authors: College of Environmental Science and Engineering, Guangxi University, Nanning 530004, China.
authors: Zhining
authors: Z
authors: Huang
authors: College of Environmental Science and Engineering, Guangxi University, Nanning 530004, China.
authors: Ya-Yuan
authors: YY
authors: Mo
authors: College of Environmental Science and Engineering, Guangxi University, Nanning 530004, China.
authors: Kai-Xuan
authors: KX
authors: Zhang
authors: The Environmental Protection Department of the Guangxi Zhuang Autonomous Region, Nanning 530028, China.
authors: Ji-Bo
authors: JB
authors: Chen
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D002681:China; D004492:Edetic Acid; D005052:Eucalyptus / Q000737:chemistry*; D007501:Iron / Q000302:isolation & purification; D007854:Lead / Q000302:isolation & purification*; D008280:Magnetics; D018515:Plant Leaves / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D014874:Water Pollutants, Chemical; C540010:biochar; D002606:Charcoal; D007854:Lead; D004492:Edetic Acid; D007501:Iron
keywords: Adsorbent regeneration; Lead adsorption; Magnetic biochar; Separation