Journal
BIORESOURCE TECHNOLOGY
Volume 247, Issue -, Pages 463-470Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.09.125
Keywords
Dewatered ion-containing biochar; Lead removal; Waste activated sludge; Zero-valent iron; Adsorption isotherm and kinetics
Funding
- State Key Laboratory of Urban Water Resource and Environment (Harbin Institute of Technology) [2016TS07]
- Project of Thousand Youth Talents
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In this study, a novel method to treat the persulfate-ZVI dewatered WAS by producing a magnetic biochar as an environmentally friendly biosorbent (nZVI-WSBC) to remove heavy metals (HMs) from wastewaters was proposed. The nZVI-WSBC exhibited good adsorption property of Pb2+ and the adsorption isotherm data were fitted well to Langmuir isotherm. Corresponding reaction kinetics fitted well with the pseudo second-order adsorption model. Notably, nZVI-WSBC was successfully used for efficient removal of HMs from real. This study comprehensively demonstrates the mechanisms between Pb2+ and nZVI-WSBC surfaces, providing a breakthrough in making a sustainable biosorbent from the dewatered iron-containing WAS.
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