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 journalArticle

6 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 languageEnglish
Pages (from-to)665-673
Number of pages9
JournalJournal of Hazardous Materials
Volume365
DOIs
Publication statusPublished - 2019 Mar 5

Fingerprint

Hydroxides
Phosphorus
hydroxide
phosphorus
Adsorption
Recovery
Phosphates
Negative ions
Anions
Composite materials
adsorption
phosphate
Kinetics
Eutrophication
Complexation
anion
Wastewater treatment
Adsorbents
Isotherms
Sorption

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

Cite this

Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery. / Yang, Fan; Zhang, Shuaishuai; Sun, Yuqing; Tsang, Daniel C.W.; Cheng, Kui; Ok, Yong Sik.

In: Journal of Hazardous Materials, Vol. 365, 05.03.2019, p. 665-673.

Research output: Contribution to journalArticle

Yang, Fan ; Zhang, Shuaishuai ; Sun, Yuqing ; Tsang, Daniel C.W. ; Cheng, Kui ; Ok, Yong Sik. / Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery. In: Journal of Hazardous Materials. 2019 ; Vol. 365. pp. 665-673.
@article{a870bc32a1ac4b06ad190d65f7ecd7cb,
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}",
year = "2019",
month = "3",
day = "5",
doi = "10.1016/j.jhazmat.2018.11.047",
language = "English",
volume = "365",
pages = "665--673",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",

}

TY - JOUR

T1 - Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery

AU - Yang, Fan

AU - Zhang, Shuaishuai

AU - Sun, Yuqing

AU - Tsang, Daniel C.W.

AU - Cheng, Kui

AU - Ok, Yong Sik

PY - 2019/3/5

Y1 - 2019/3/5

N2 - 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.

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.

KW - Biomass waste valorization

KW - Engineered biochar

KW - Mineral-biochar composites

KW - Resource recovery

KW - Wastewater treatment

UR - http://www.scopus.com/inward/record.url?scp=85056840233&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85056840233&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2018.11.047

DO - 10.1016/j.jhazmat.2018.11.047

M3 - Article

VL - 365

SP - 665

EP - 673

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

ER -