dc.creator | Nunell, Gisel Vanesa | |
dc.creator | Fernandez, Maria Emilia | |
dc.creator | Bonelli, Pablo Ricardo | |
dc.creator | Cukierman, Ana Lea | |
dc.date.accessioned | 2018-09-13T17:36:24Z | |
dc.date.accessioned | 2018-11-06T16:04:58Z | |
dc.date.available | 2018-09-13T17:36:24Z | |
dc.date.available | 2018-11-06T16:04:58Z | |
dc.date.created | 2018-09-13T17:36:24Z | |
dc.date.issued | 2015-07 | |
dc.identifier | Nunell, Gisel Vanesa; Fernandez, Maria Emilia; Bonelli, Pablo Ricardo; Cukierman, Ana Lea; Nitrate uptake from water by means of tailored adsorbents; Springer; Water, Air and Soil Pollution; 226; 8; 7-2015; 1-13 | |
dc.identifier | 0049-6979 | |
dc.identifier | http://hdl.handle.net/11336/59533 | |
dc.identifier | 1573-2932 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1904376 | |
dc.description.abstract | Two different adsorbents directed to nitrate removal from water were developed from Parkinsonia aculeata wood. An activated carbon was obtained by chemical activation with K2CO3 at 800 °C, whereas another adsorbent was prepared using a dilute solution of NH4Cl at 450 °C. Elemental compositions, surface functional groups, and textural parameters of both adsorbents were determined and compared with those of a commercial activated carbon used as a reference. Nitrate adsorption assays were carried out to examine the effects of solution pH, adsorbent dosage, contact time, and equilibrium adsorption isotherms. The adsorbent obtained with K2CO3 showed a well-developed pore structure (S BET∈=∈777 m2/g; V T∈=∈0.35 cm3/g) and neutral character, while the one prepared with NH4Cl exhibited a low porous development (S BET∈=∈58 m2/g; V T∈=∈0.03 cm3/g), acidic nature, and a noticeably high N content. The latter attained the highest nitrate removal efficiency, with a maximum adsorption capacity (X mL∈=∈0.40 mmol/g) higher than those estimated for the former (X mL∈=∈0.34 mmol/g) and the commercial sample (X mL∈=∈0.23 mmol/g), pointing to a predominant role of the chemical surface characteristics, mainly of N-containing groups and basic functionalities. Accordingly, the adsorbent obtained with NH4Cl represents a friendly novel material especially suited for nitrate removal. | |
dc.language | eng | |
dc.publisher | Springer | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11270-015-2546-8 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11270-015-2546-8 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | ACTIVATED CARBONS | |
dc.subject | AMMONIUM CHLORIDE | |
dc.subject | NITRATE REMOVAL | |
dc.subject | POTASSIUM CARBONATE | |
dc.title | Nitrate uptake from water by means of tailored adsorbents | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |