Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery

Fan Yang; Shuaishuai Zhang; Yuqing Sun; Daniel C.W. Tsang; Kui Cheng; Yong Sik Ok

doi:10.1016/j.jhazmat.2018.11.047

Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery

Fan Yang, Shuaishuai Zhang, Yuqing Sun, Daniel C.W. Tsang, Kui Cheng, Yong Sik Ok

Research output: Contribution to journal › Article › peer-review

242 Citations (Scopus)

Abstract

Highly efficient and cost-effective adsorbents for phosphate (P) recovery are the key to control eutrophication and recover phosphorus from waste streams to enhance food production. This study assembled corn stalk-derived biochar (BC) with various forms of layered double hydroxides (LDHs) (B-M-LDH) through simultaneous pyrolysis of waste biomass and metal (i.e., Zn/Al, Mg/Al, and Ni/Fe) hydroxide precipitates. Batch sorption experiments evaluated the kinetics and isotherms of phosphate adsorption as well as the influence of pH value and co-existing anions. Morphological characterization showed that crystalline LDH flakes were impregnated within the framework of fabricated B-M-LDH composites. Superior P adsorption capacity (152.1 mg (P) g⁻¹) and fast Elovich kinetics (5925 mg g⁻¹ h⁻¹) could be achieved by the B-Zn/Al-LDH composite at pH 5. The P adsorption onto BC-LDHs was pH dependent and subjected to adverse influence of co-existing anions. Interlayer anion exchange and surface complexation were probably the predominant adsorption mechanisms at the studied phosphate concentration. Therefore, BC can be functionalized as mineral composites for enhancing P recovery and wastewater treatment.

Original language	English
Pages (from-to)	665-673
Number of pages	9
Journal	Journal of hazardous materials
Volume	365
DOIs	https://doi.org/10.1016/j.jhazmat.2018.11.047
Publication status	Published - 2019 Mar 5

Bibliographical note

Funding Information:
The authors appreciate the financial support from University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province ( UNPYSCT-2017018 ), National Natural Science Fund for Young Scholars ( 31600413 ), Natural Science Foundation of Heilongjiang Province of China ( QC2018019 ), and Hong Kong Research Grants Council ( PolyU 15217818 ).

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Biomass waste valorization
Engineered biochar
Mineral-biochar composites
Resource recovery
Wastewater treatment

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jhazmat.2018.11.047

Cite this

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title = "Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery",

abstract = "Highly efficient and cost-effective adsorbents for phosphate (P) recovery are the key to control eutrophication and recover phosphorus from waste streams to enhance food production. This study assembled corn stalk-derived biochar (BC) with various forms of layered double hydroxides (LDHs) (B-M-LDH) through simultaneous pyrolysis of waste biomass and metal (i.e., Zn/Al, Mg/Al, and Ni/Fe) hydroxide precipitates. Batch sorption experiments evaluated the kinetics and isotherms of phosphate adsorption as well as the influence of pH value and co-existing anions. Morphological characterization showed that crystalline LDH flakes were impregnated within the framework of fabricated B-M-LDH composites. Superior P adsorption capacity (152.1 mg (P) g−1) and fast Elovich kinetics (5925 mg g−1 h−1) could be achieved by the B-Zn/Al-LDH composite at pH 5. The P adsorption onto BC-LDHs was pH dependent and subjected to adverse influence of co-existing anions. Interlayer anion exchange and surface complexation were probably the predominant adsorption mechanisms at the studied phosphate concentration. Therefore, BC can be functionalized as mineral composites for enhancing P recovery and wastewater treatment.",

keywords = "Biomass waste valorization, Engineered biochar, Mineral-biochar composites, Resource recovery, Wastewater treatment",

author = "Fan Yang and Shuaishuai Zhang and Yuqing Sun and Tsang, {Daniel C.W.} and Kui Cheng and Ok, {Yong Sik}",

note = "Funding Information: The authors appreciate the financial support from University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province ( UNPYSCT-2017018 ), National Natural Science Fund for Young Scholars ( 31600413 ), Natural Science Foundation of Heilongjiang Province of China ( QC2018019 ), and Hong Kong Research Grants Council ( PolyU 15217818 ). Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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AU - Ok, Yong Sik

N1 - Funding Information: The authors appreciate the financial support from University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province ( UNPYSCT-2017018 ), National Natural Science Fund for Young Scholars ( 31600413 ), Natural Science Foundation of Heilongjiang Province of China ( QC2018019 ), and Hong Kong Research Grants Council ( PolyU 15217818 ). Publisher Copyright: © 2018 Elsevier B.V.

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AB - Highly efficient and cost-effective adsorbents for phosphate (P) recovery are the key to control eutrophication and recover phosphorus from waste streams to enhance food production. This study assembled corn stalk-derived biochar (BC) with various forms of layered double hydroxides (LDHs) (B-M-LDH) through simultaneous pyrolysis of waste biomass and metal (i.e., Zn/Al, Mg/Al, and Ni/Fe) hydroxide precipitates. Batch sorption experiments evaluated the kinetics and isotherms of phosphate adsorption as well as the influence of pH value and co-existing anions. Morphological characterization showed that crystalline LDH flakes were impregnated within the framework of fabricated B-M-LDH composites. Superior P adsorption capacity (152.1 mg (P) g−1) and fast Elovich kinetics (5925 mg g−1 h−1) could be achieved by the B-Zn/Al-LDH composite at pH 5. The P adsorption onto BC-LDHs was pH dependent and subjected to adverse influence of co-existing anions. Interlayer anion exchange and surface complexation were probably the predominant adsorption mechanisms at the studied phosphate concentration. Therefore, BC can be functionalized as mineral composites for enhancing P recovery and wastewater treatment.

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Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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