Graphene Oxide Nanocomposite Hydrogel Beads for Removal of Selenium in Contaminated Water

被引:54
作者
Bandara, Pasan Chinthana [1 ]
Perez, Jem Valerie D. [1 ]
Nadres, Enrico Tapire [1 ]
Nannapaneni, Raj Gopal [1 ]
Krakowiak, Konrad J. [1 ]
Rodrigues, Debora Frigi [1 ]
机构
[1] Univ Houston, Dept Civil & Environm Engn, Houston, TX 77204 USA
关键词
selenium; response surface methodology; hydrogel beads; nanocomposites; graphene oxide; POWDERED ACTIVATED CARBON; CROSS-LINKED CHITOSAN; COMPOSITE HYDROGELS; ION ADSORPTION; SORPTION; SPECIATION; ADSORBENTS; ACID; NANOTECHNOLOGY; NANOMATERIALS;
D O I
10.1021/acsapm.9b00612
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Selenium in water is becoming of increasing risk to human exposure because only recently serious health effects have been associated with their presence in water resources. The present study investigated the development and optimization of the composition of graphene oxide polymeric nanocomposite hydrogel beads by using response surface methodology. The use of polymers such as chitosan and polyethylenimine, which are rich in amine and alcoholic functional groups, provided enhanced removal of anionic selenium species from the water. Experimentally validated polymeric beads were used to perform batch adsorptions of selenium under different conditions such as pH, bead dosage, and diverse selenium concentrations to investigate their potential use, adsorption kinetics, and selenium removal mechanisms. Acidic conditions were found to best remove negatively charged selenium ions from aqueous solutions via -OH, -COOH, and amine functional groups present in the beads. The adsorption kinetic mechanism was better described by the pseudo-second-order adsorption kinetics, indicating that the beads remove selenium via chemisorption mechanisms. The isotherm studies showed an adsorption capacity of 1.62 mg/g based on the Langmuir isotherms at 25 degrees C. Regeneration studies showed loss of available adsorption sites after the first desorption treatment with different concentrations of NaOH and HCl. The mathematically optimized nanocomposite was further used to treat selenium spiked in real environmental water samples, which confirmed that the best removal of selenium occurs in acidic conditions.
引用
收藏
页码:2668 / 2679
页数:23
相关论文
共 85 条
[1]   Maternal transfer of contaminants in birds: Mercury and selenium concentrations in parents and their eggs [J].
Ackerman, Joshua T. ;
Eagles-Smith, Collin A. ;
Herzog, Mark P. ;
Hartman, C. Alex .
ENVIRONMENTAL POLLUTION, 2016, 210 :145-154
[2]   Groundwater vulnerability to selenium in semi-arid environments: Amman Zarqa Basin, Jordan [J].
Al Kuisi, Mustafa ;
Abdel-Fattah, Ahmad .
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH, 2010, 32 (02) :107-128
[3]   The Sorption of Ketotifen Fumarate by Chitosan [J].
Alkhamis, Khouloud A. ;
Salem, Mutaz S. ;
Khanfar, Mai S. .
AAPS PHARMSCITECH, 2008, 9 (03) :866-869
[4]  
[Anonymous], 2009, 816F09004 EPA, P7
[5]   Utilization of a Novel Chitosan/Clay/Biochar Nanobiocomposite for Immobilization of Heavy Metals in Acid Soil Environment [J].
Arabyarmohammadi, Hoda ;
Darban, Ahmad Khodadadi ;
Abdollahy, Mahmoud ;
Yong, Raymond ;
Ayati, Bita ;
Zirakjou, Abbas ;
van der Zee, Sjoerd E. A. T. M. .
JOURNAL OF POLYMERS AND THE ENVIRONMENT, 2018, 26 (05) :2107-2119
[6]   Interactions of PEI (polyethylenimine)-silica particles with citric acid in dispersions [J].
Avadiar, Lavanya ;
Leong, Yee-Kwong .
COLLOID AND POLYMER SCIENCE, 2011, 289 (03) :237-245
[7]   A review of potentially low-cost sorbents for heavy metals [J].
Bailey, SE ;
Olin, TJ ;
Bricka, RM ;
Adrian, DD .
WATER RESEARCH, 1999, 33 (11) :2469-2479
[8]   Use of Response Surface Methodology To Develop and Optimize the Composition of a Chitosan-Polyethyleneimine-Graphene Oxide Nanocomposite Membrane Coating To More Effectively Remove Cr(VI) and Cu(II) from Water [J].
Bandara, Pasan C. ;
Nadres, Enrico T. ;
Rodrigues, Debora F. .
ACS APPLIED MATERIALS & INTERFACES, 2019, 11 (19) :17784-17795
[9]   THE DETERMINATION OF PORE VOLUME AND AREA DISTRIBUTIONS IN POROUS SUBSTANCES .1. COMPUTATIONS FROM NITROGEN ISOTHERMS [J].
BARRETT, EP ;
JOYNER, LG ;
HALENDA, PP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (01) :373-380
[10]   Evolution of selenium concentrations and speciation in groundwater flow systems: Upper Floridan (Florida) and Carrizo Sand (Texas) aquifers [J].
Basu, Rituparna ;
Haque, Shama E. ;
Tang, Jianwu ;
Ji, Junfeng ;
Johannesson, Karen H. .
CHEMICAL GEOLOGY, 2007, 246 (3-4) :147-169