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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

High efficiency removal of As(III) from waters using a new and friendly adsorbent based on sugarcane bagasse and corncob husk Fe-coated biochars

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Author(s):
Montero, Jose Ignacio Z. [1] ; Monteiro, Adnivia S. C. [1, 2] ; Gontijo, Erik S. J. [3, 1] ; Bueno, Carolina C. [1] ; de Moraes, Mineia A. [1] ; Rosa, Andre H. [1]
Total Authors: 6
Affiliation:
[1] Sao Paulo State Univ Unesp, Inst Sci & Technol, Av Tres Marco 511, BR-18087180 Sorocaba, SP - Brazil
[2] Fed Univ Sergipe UFS, Postgrad Program Water Resources, Av Marechal Rondon S-N, BR-49100000 Sao Cristovao, SE - Brazil
[3] UFZ Helmholtz Ctr Environm Res, Dept Lake Res, Brueckstr 3a, D-39114 Magdeburg - Germany
Total Affiliations: 3
Document type: Journal article
Source: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY; v. 162, p. 616-624, OCT 30 2018.
Web of Science Citations: 5
Abstract

Water contamination of As is a big issue in many areas around the globe. Therefore, cheap and efficient techniques are essential facing traditional treatment methods. Then, biochars (BC) emerged recently as material that can be used for As removal. However, research about efficiency of BC produced from local feedstock is still needed. The purpose of this study is to assess the efficiency of BC produced from sugarcane bagasse (SB) together with corncob husk (CH) with and without Fe(III) (BCFe) modification to be used for removal of As(III) from waters. The BC and BCFe produced at different pyrolysis temperatures were characterised using FTIR and SEM/EDS. Adsorption capacities of BC and BCFe were evaluated via batch adsorption, desorption and column tests and their performance was compared with adsorption using activated carbon. The results showed that Fe modification improve substantially the As(III) adsorption in a way that both BCFe-SB and BCFe-CH removed from 85% to 99.9% from 1000 mu g/L As(III) solutions. Both materials fitted well in Langmuir model and the maximum adsorption capacity was 20 mg/g for BCFe-SB and 50 mg/g for BCFe-CH. The adsorption kinetics of BCFe was fast (<= 30 min) and it had a better performance than activated carbon. The column tests showed that the process is efficient even at high As(III) concentrations. The fast removal process and good removal results make the BCFe-SB and BCFe-CH attractive for in situ and commercial (filters) use, since time and efficiency are required in new technologies. (AU)

FAPESP's process: 13/24168-8 - Sustainable agriculture: preparation and characterization of polymeric microspheres containing biochar for imobilization and slow release of phosphorus and promoting bacteria plant growth
Grantee:André Henrique Rosa
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 12/17727-8 - Distribution, complexation and mobility of arsenic ions in superficial waters in Iron Quadrangle -MG/Brazil: emphasis on interactions with aquatic humic substances
Grantee:Erik Sartori Jeunon Gontijo
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/08373-0 - Biochar Engineering - Preparation and Characterization of microspheres for slow releasing of nutrients and bacteria
Grantee:Carolina de Castro Bueno
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 16/08215-4 - REUTILIZATION OF WASTE AND DETOXIFICATION OF WASTEWATER: EVALUATION OF THE POTENTIAL APPLICATION OF BIOCHAR FOR THE REMOVAL OF EMERGING CONTAMINANTS AND PONTENTIALLY TOXIC METALS
Grantee:André Henrique Rosa
Support type: Regular Research Grants