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Nitrogen doped char from anaerobically digested fiber for phosphate removal in aqueous solutions

Published on Feb 1, 2020in Chemosphere5.11
· DOI :10.1016/j.chemosphere.2019.124889
Sohrab Haghighi Mood4
Estimated H-index: 4
(WSU: Washington State University),
Sohrab Haghighi Mood (WSU: Washington State University)+ 1 AuthorsManuel Garcia-Perez37
Estimated H-index: 37
(WSU: Washington State University)
Abstract
Abstract This study explores the use of an engineered char produced from the pyrolysis of anaerobically digested fiber (ADF) to adsorb phosphate from aqueous solutions. Two series of engineered chars were produced. The first series was a CO2 activated (CA) char produced via slow pyrolysis between 350 and 750 °C. The second series was a nitrogen doped (ND) char activated in the presence of ammonia at comparable temperatures. Proximate analysis, elemental composition, gas physisorption, Inductively coupled plasma mass spectrometry (ICP-MS), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier Transform Infrared Spectroscopy (FTIR) and X-ray powder diffraction (XRD) techniques were used to characterize properties of resulting products. The surface area of the carbon product increased after nitrogen doping through ammonization (166.6–463.1 m2/g) compared to CO2 activated chars (156.5–413.1 m2/g). Phosphate adsorption isotherms for both CO2 activated and nitrogen doped chars can be described by the Langmuir- Freundlich and Redlich Peterson adsorption models. Nitrogen doped carbon phosphate sorption capacity in aqueous solutions was twice compared to CO2 activated carbons. As carbonization/activation temperature increased the sorption capacity increased from 3.4 to 33.3 mg g-1 for CA char and 6.3–63.1 mg g-1 for nitrogen doped char.
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#1Bing Li (THU: Tsinghua University)H-Index: 25
#2Irina Boiarkina (University of Auckland)H-Index: 7
Last.Brent R. Young (University of Auckland)H-Index: 21
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#1Michael Ayiania (WSU: Washington State University)H-Index: 1
#2Felix Martin Carbajal-Gamarra (WSU: Washington State University)
Last.Manuel Garcia-Perez (WSU: Washington State University)H-Index: 37
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#1Wei Chen (HUST: Huazhong University of Science and Technology)H-Index: 13
#2Kaixu Li (HUST: Huazhong University of Science and Technology)H-Index: 5
Last.Hanping Chen (HUST: Huazhong University of Science and Technology)H-Index: 29
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#1Sarah Vieira Novais (ESALQ: Escola Superior de Agricultura Luiz de Queiroz)H-Index: 2
Last.Carlos Eduardo Pellegrino Cerri (ESALQ: Escola Superior de Agricultura Luiz de Queiroz)H-Index: 35
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#1Kumar Vikrant (IITs: Indian Institutes of Technology)H-Index: 7
#2Yang Soo Kim (Hanyang University)H-Index: 95
Last.R.S. Singh (IITs: Indian Institutes of Technology)H-Index: 18
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#1Shengdan Wang (GU: Guangzhou University)H-Index: 1
#2Lingjun Kong (GU: Guangzhou University)H-Index: 13
Last.Kaimin Shih (HKU: University of Hong Kong)H-Index: 31
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#1Qianqian Yin (NCEPU: North China Electric Power University)H-Index: 5
#2Ruikun Wang (NCEPU: North China Electric Power University)H-Index: 7
Last.Zhenghui Zhao (NCEPU: North China Electric Power University)H-Index: 7
view all 3 authors...
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