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Author:

Zeng, Huiping (Zeng, Huiping.) | Wang, Fanshuo (Wang, Fanshuo.) | Xu, Ke (Xu, Ke.) | Zhang, Jie (Zhang, Jie.) | Li, Dong (Li, Dong.)

Indexed by:

EI Scopus SCIE

Abstract:

The porosity of Chitosan Alginate Fe-sludge Beads strengthened with manganese sludge (CAFBs) was optimized by adding CaCO3 or NaHCO3 powder to generate CO2 gas during the preparation process. Two types of adsorbent Dropped-CAFBs (D-CAFBs) and Heated-CAFBs (H-CAFBs) were made. SEM-EDS, BET, XRD as well as adsorption kinetics and isothermal adsorption experiments were used to evaluate the effects of the two pore-forming methods. The SEM-EDS, BET results confirmed that the prepared adsorbent has good porosity and specific surface area was 128.16m(2)/g. XRD results showed that the structure is amorphous iron manganese oxide. The pseudo-second, intra-particle and Freundlich model were suitable to describe the adsorption process(R-2 > 0.9), the maximum adsorption capacity of As(III) at 298K is 24.06 mg/g. The experiments indicate the pH ranging from 9 to 10 and the air aeration intensity adjusted to 1L/min is favorable for regeneration, the percent of As(III) removal is as high as about 80% after 4 adsorption-desorption cycles.

Keyword:

Chitosan-Alginate Optimization Regeneration Adsorption Fe-Mn sludge

Author Community:

  • [ 1 ] [Zeng, Huiping]Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Fanshuo]Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
  • [ 3 ] [Xu, Ke]Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Jie]Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Dong]Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
  • [ 6 ] [Zhang, Jie]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

Reprint Author's Address:

  • [Li, Dong]Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China

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Source :

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

ISSN: 0927-7757

Year: 2020

Volume: 607

5 . 2 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:139

Cited Count:

WoS CC Cited Count: 22

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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