TY  - JOUR
AU  - Pincus, Lauren N.
AU  - Rudel, Holly E.
AU  - Petrovic, Predrag V.
AU  - Gupta, Srishti
AU  - Westerhoff, Paul
AU  - Muhich, Christopher L.
AU  - Zimmerman, Julie B.
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5369
AB  - Development of novel adsorbents often neglects the
competitive adsorption between co-occurring oxo-anions, overestimating realistic pollutant removal potentials, and overlooking
the need to improve selectivity of materials. This critical review
focuses on adsorptive competition between commonly cooccurring oxo-anions in water and mechanistic approaches for
the design and development of selective adsorbents. Six “target”
oxo-anion pollutants (arsenate, arsenite, selenate, selenite,
chromate, and perchlorate) were selected for study. Five
“competing” co-occurring oxo-anions (phosphate, sulfate, bicarbonate, silicate, and nitrate) were selected due to their potential to
compete with target oxo-anions for sorption sites resulting in
decreased removal of the target oxo-anions. First, a comprehensive review of competition between target and competitor oxo-anions
to sorb on commonly used, nonselective, metal (hydr)oxide materials is presented, and the strength of competition between each
target and competitive oxo-anion pair is classified. This is followed by a critical discussion of the different equations and models used
to quantify selectivity. Next, four mechanisms that have been successfully utilized in the development of selective adsorbents are
reviewed: variation in surface complexation, Lewis acid/base hardness, steric hindrance, and electrostatic interactions. For each
mechanism, the oxo-anions, both target and competitors, are ranked in terms of adsorptive attraction and technologies that exploit
this mechanism are reviewed. Third, given the significant effort to evaluate these systems empirically, the potential to use
computational quantum techniques, such as density functional theory (DFT), for modeling and prediction is explored. Finally, areas
within the field of selective adsorption requiring further research are detailed with guidance on priorities for screening and defining
selective adsorbents.
PB  - ACS Publications
T2  - Environmental Science and Technology
T1  - Exploring the Mechanisms of Selectivity for Environmentally Significant Oxo-Anion Removal during Water Treatment: A Review of Common Competing Oxo-Anions and Tools for Quantifying Selective Adsorption
VL  - 54
IS  - 16
SP  - 9769
EP  - 9790
DO  - 10.1021/acs.est.0c01666
ER  - 

@article{
author = "Pincus, Lauren N. and Rudel, Holly E. and Petrovic, Predrag V. and Gupta, Srishti and Westerhoff, Paul and Muhich, Christopher L. and Zimmerman, Julie B.",
year = "2020",
abstract = "Development of novel adsorbents often neglects the
competitive adsorption between co-occurring oxo-anions, overestimating realistic pollutant removal potentials, and overlooking
the need to improve selectivity of materials. This critical review
focuses on adsorptive competition between commonly cooccurring oxo-anions in water and mechanistic approaches for
the design and development of selective adsorbents. Six “target”
oxo-anion pollutants (arsenate, arsenite, selenate, selenite,
chromate, and perchlorate) were selected for study. Five
“competing” co-occurring oxo-anions (phosphate, sulfate, bicarbonate, silicate, and nitrate) were selected due to their potential to
compete with target oxo-anions for sorption sites resulting in
decreased removal of the target oxo-anions. First, a comprehensive review of competition between target and competitor oxo-anions
to sorb on commonly used, nonselective, metal (hydr)oxide materials is presented, and the strength of competition between each
target and competitive oxo-anion pair is classified. This is followed by a critical discussion of the different equations and models used
to quantify selectivity. Next, four mechanisms that have been successfully utilized in the development of selective adsorbents are
reviewed: variation in surface complexation, Lewis acid/base hardness, steric hindrance, and electrostatic interactions. For each
mechanism, the oxo-anions, both target and competitors, are ranked in terms of adsorptive attraction and technologies that exploit
this mechanism are reviewed. Third, given the significant effort to evaluate these systems empirically, the potential to use
computational quantum techniques, such as density functional theory (DFT), for modeling and prediction is explored. Finally, areas
within the field of selective adsorption requiring further research are detailed with guidance on priorities for screening and defining
selective adsorbents.",
publisher = "ACS Publications",
journal = "Environmental Science and Technology",
title = "Exploring the Mechanisms of Selectivity for Environmentally Significant Oxo-Anion Removal during Water Treatment: A Review of Common Competing Oxo-Anions and Tools for Quantifying Selective Adsorption",
volume = "54",
number = "16",
pages = "9769-9790",
doi = "10.1021/acs.est.0c01666"
}

Pincus, L. N., Rudel, H. E., Petrovic, P. V., Gupta, S., Westerhoff, P., Muhich, C. L.,& Zimmerman, J. B.. (2020). Exploring the Mechanisms of Selectivity for Environmentally Significant Oxo-Anion Removal during Water Treatment: A Review of Common Competing Oxo-Anions and Tools for Quantifying Selective Adsorption. in Environmental Science and Technology
ACS Publications., 54(16), 9769-9790.
https://doi.org/10.1021/acs.est.0c01666

Pincus LN, Rudel HE, Petrovic PV, Gupta S, Westerhoff P, Muhich CL, Zimmerman JB. Exploring the Mechanisms of Selectivity for Environmentally Significant Oxo-Anion Removal during Water Treatment: A Review of Common Competing Oxo-Anions and Tools for Quantifying Selective Adsorption. in Environmental Science and Technology. 2020;54(16):9769-9790.
doi:10.1021/acs.est.0c01666 .

Pincus, Lauren N., Rudel, Holly E., Petrovic, Predrag V., Gupta, Srishti, Westerhoff, Paul, Muhich, Christopher L., Zimmerman, Julie B., "Exploring the Mechanisms of Selectivity for Environmentally Significant Oxo-Anion Removal during Water Treatment: A Review of Common Competing Oxo-Anions and Tools for Quantifying Selective Adsorption" in Environmental Science and Technology, 54, no. 16 (2020):9769-9790,
https://doi.org/10.1021/acs.est.0c01666 . .