Hydrochars from pinewood for adsorption and nonradical catalysis of bisphenols

Jianan Yu; Zhiliang Zhu; Hua Zhang; Guanglan Di; Yanling Qiu; Daqiang Yin; Shaobin Wang

doi:10.1016/j.jhazmat.2019.121548

Hydrochars from pinewood for adsorption and nonradical catalysis of bisphenols

J Hazard Mater. 2020 Mar 5:385:121548. doi: 10.1016/j.jhazmat.2019.121548. Epub 2019 Nov 2.

Authors

Jianan Yu¹, Zhiliang Zhu², Hua Zhang³, Guanglan Di³, Yanling Qiu⁴, Daqiang Yin⁴, Shaobin Wang⁵

Affiliations

¹ State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
² State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China. Electronic address: zzl@tongji.edu.cn.
³ State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China.
⁴ Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai, 200092, China.
⁵ School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia. Electronic address: shaobin.wang@adelaide.edu.au.

PMID: 31711725
DOI: 10.1016/j.jhazmat.2019.121548

Abstract

In the present study, hydrochars (HCs) were prepared from pinewood biomass by high-temperature pyrolysis and applied as environmental-friendly adsorbents and catalysts in the removal of bisphenol F (BPF) and bisphenol S (BPS) from water. It was found that the structural oxygen defects on hydrochars not only enhance the specific surface area for adsorption of the bisphenols, but also function as an electron conductor for molecular oxygen activation in nonradical pathways. The hydrochar pyrolyzed at 800 °C (HC-800) showed the superior adsorption and catalytic performances toward BPS and BPF removals in a wide pH range, and the removal efficiencies were hardly inhibited by the coexistent inorganic anions and humic acid. Particularly, the nonradical reaction is the dominated catalytic oxidation process in a H₂O₂-HC-800 system, different from the traditional radical-based process with persistent free radicals on hydrochars derived from low-temperature pyrolysis. This study provides a novel route toward the efficient removal of endocrine disrupting compounds via the synergistic adsorption and nonradical catalysis.

Keywords: Adsorption; Bisphenols; Nonradical catalysis; Oxygen defects; Pyrolysis of hydrochar.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Benzhydryl Compounds / chemistry
Benzhydryl Compounds / isolation & purification*
Biomass
Carbon / chemistry*
Drinking Water / chemistry
Phenols / chemistry
Phenols / isolation & purification*
Pinus / chemistry*
Rivers / chemistry
Sulfones / chemistry
Sulfones / isolation & purification*
Water Pollutants, Chemical / chemistry
Water Pollutants, Chemical / isolation & purification*
Water Purification / methods
Wood / chemistry

Substances

Benzhydryl Compounds
Drinking Water
Phenols
Sulfones
Water Pollutants, Chemical
bisphenol F
Carbon
bis(4-hydroxyphenyl)sulfone