Waste sludge derived adsorbents for arsenate removal from water

Rahul Kumar, Chan Ung Kang, Dinesh Mohan, Moonis Ali Khan, Joon Hak Lee, Sean S. Lee, Byong-Hun Jeon

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Aqueous arsenate [As(V)] was removed using an aluminum-based adsorbent (ABA) and coal mine drainage sludge coated polyurethane (CMDS-PU) prepared using alum and coal mine sludge, respectively. Their As(V) removal efficiencies were compared with each other and granular ferric hydroxide (GFH). The mineralogy and surface chemistry of materials were determined using wavelength dispersive X-ray fluorescence (WD XRF) and Fourier transform infrared spectroscopy (FTIR), respectively. The angle-resolved X-ray photoelectron spectroscopy (AR-XPS) studies confirmed As(V) retention on the adsorbent surfaces. The adsorption kinetics data were fitted to pseudo second-order rate equation. The faster As(V) uptake kinetics of GFH and ABA (GFH > ABA > CMDS-PU) were attributed to their large pore volume and mesoporous nature. Langmuir adsorption capacities of 22, 31 and 10 mg/g, were achieved for GFH, ABA and CMDS-PU, respectively. As(V) adsorption on GFH, ABA and CMDS-PU was endothermic. GFH and ABA were efficient over a wide pH range (3–10). In column studies, GFH, ABA, and CMDS-PU successfully treated 23625, 842, and 158 bed volumes (BVs) and 2094, 6400, and 17 BVs of As(V)-contaminated water with 9.5 and 27 EBCT, respectively (at pH = 6.0, Asi = 600 μg/L). The GFH and ABA have a potential to be used at large-scale aqueous phase As(V) remediation.

Original languageEnglish
Article number124832
JournalChemosphere
Volume239
DOIs
StatePublished - 2020 Jan 1

Fingerprint

arsenate
Sewage
Aluminum
Adsorbents
hydroxide
Coal
mine drainage
aluminum
sludge
Polyurethanes
coal mine
Coal mines
Water
Hydrated alumina
Drainage
Adsorption
water
adsorption
Photoelectron Spectroscopy
kinetics

Keywords

  • Aluminum based adsorbent
  • Arsenate
  • Coal mine drainage sludge coated polyurethane
  • Column studies
  • Empty bed contact time
  • Granular ferric hydroxide

Cite this

Kumar, Rahul ; Kang, Chan Ung ; Mohan, Dinesh ; Khan, Moonis Ali ; Lee, Joon Hak ; Lee, Sean S. ; Jeon, Byong-Hun. / Waste sludge derived adsorbents for arsenate removal from water. In: Chemosphere. 2020 ; Vol. 239.
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abstract = "Aqueous arsenate [As(V)] was removed using an aluminum-based adsorbent (ABA) and coal mine drainage sludge coated polyurethane (CMDS-PU) prepared using alum and coal mine sludge, respectively. Their As(V) removal efficiencies were compared with each other and granular ferric hydroxide (GFH). The mineralogy and surface chemistry of materials were determined using wavelength dispersive X-ray fluorescence (WD XRF) and Fourier transform infrared spectroscopy (FTIR), respectively. The angle-resolved X-ray photoelectron spectroscopy (AR-XPS) studies confirmed As(V) retention on the adsorbent surfaces. The adsorption kinetics data were fitted to pseudo second-order rate equation. The faster As(V) uptake kinetics of GFH and ABA (GFH > ABA > CMDS-PU) were attributed to their large pore volume and mesoporous nature. Langmuir adsorption capacities of 22, 31 and 10 mg/g, were achieved for GFH, ABA and CMDS-PU, respectively. As(V) adsorption on GFH, ABA and CMDS-PU was endothermic. GFH and ABA were efficient over a wide pH range (3–10). In column studies, GFH, ABA, and CMDS-PU successfully treated 23625, 842, and 158 bed volumes (BVs) and 2094, 6400, and 17 BVs of As(V)-contaminated water with 9.5 and 27 EBCT, respectively (at pH = 6.0, Asi = 600 μg/L). The GFH and ABA have a potential to be used at large-scale aqueous phase As(V) remediation.",
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Waste sludge derived adsorbents for arsenate removal from water. / Kumar, Rahul; Kang, Chan Ung; Mohan, Dinesh; Khan, Moonis Ali; Lee, Joon Hak; Lee, Sean S.; Jeon, Byong-Hun.

In: Chemosphere, Vol. 239, 124832, 01.01.2020.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Waste sludge derived adsorbents for arsenate removal from water

AU - Kumar, Rahul

AU - Kang, Chan Ung

AU - Mohan, Dinesh

AU - Khan, Moonis Ali

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AU - Lee, Sean S.

AU - Jeon, Byong-Hun

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