• Je něco špatně v tomto záznamu ?

Removal of ammonium from municipal wastewater with powdered and granulated metakaolin geopolymer

T. Luukkonen, K. Věžníková, ET. Tolonen, H. Runtti, J. Yliniemi, T. Hu, K. Kemppainen, U. Lassi,

. 2018 ; 39 (4) : 414-423. [pub] 20170316

Jazyk angličtina Země Velká Británie

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc18010757

Ammonium [Formula: see text] removal from municipal wastewater poses challenges with the commonly used biological processes. Especially at low wastewater temperatures, the process is frequently ineffective and difficult to control. One alternative is to use ion-exchange. In the present study, a novel [Formula: see text] ion-exchanger, metakaolin geopolymer (MK-GP), was prepared, characterised, and tested. Batch experiments with powdered MK-GP indicated that the maximum exchange capacities were 31.79, 28.77, and 17.75 mg/g in synthetic, screened, and pre-sedimented municipal wastewater, respectively, according to the Sips isotherm (R2 ≥ 0.91). Kinetics followed the pseudo-second-order rate equation in all cases (kp2 = 0.04-0.24 g mg-1 min-1, R2 ≥ 0.97) and the equilibrium was reached within 30-90 min. Granulated MK-GP proved to be suitable for a continuous column mode use. Granules were high-strength, porous at the surface and could be regenerated multiple times with NaCl/NaOH. A bench-scale pilot test further confirmed the feasibility of granulated MK-GP in practical conditions at a municipal wastewater treatment plant: consistently <4 mg/L [Formula: see text] could be reached even though wastewater had low temperature (approx. 10°C). The results indicate that powdered or granulated MK-GP might have practical potential for removal and possible recovery of [Formula: see text] from municipal wastewaters. The simple and low-energy preparation method for MK-GP further increases the significance of the results.

Citace poskytuje Crossref.org

000      
00000naa a2200000 a 4500
001      
bmc18010757
003      
CZ-PrNML
005      
20180416093435.0
007      
ta
008      
180404s2018 xxk f 000 0|eng||
009      
AR
024    7_
$a 10.1080/09593330.2017.1301572 $2 doi
035    __
$a (PubMed)28278098
040    __
$a ABA008 $b cze $d ABA008 $e AACR2
041    0_
$a eng
044    __
$a xxk
100    1_
$a Luukkonen, Tero $u a Kajaani University of Applied Sciences , Kajaani , Finland.
245    10
$a Removal of ammonium from municipal wastewater with powdered and granulated metakaolin geopolymer / $c T. Luukkonen, K. Věžníková, ET. Tolonen, H. Runtti, J. Yliniemi, T. Hu, K. Kemppainen, U. Lassi,
520    9_
$a Ammonium [Formula: see text] removal from municipal wastewater poses challenges with the commonly used biological processes. Especially at low wastewater temperatures, the process is frequently ineffective and difficult to control. One alternative is to use ion-exchange. In the present study, a novel [Formula: see text] ion-exchanger, metakaolin geopolymer (MK-GP), was prepared, characterised, and tested. Batch experiments with powdered MK-GP indicated that the maximum exchange capacities were 31.79, 28.77, and 17.75 mg/g in synthetic, screened, and pre-sedimented municipal wastewater, respectively, according to the Sips isotherm (R2 ≥ 0.91). Kinetics followed the pseudo-second-order rate equation in all cases (kp2 = 0.04-0.24 g mg-1 min-1, R2 ≥ 0.97) and the equilibrium was reached within 30-90 min. Granulated MK-GP proved to be suitable for a continuous column mode use. Granules were high-strength, porous at the surface and could be regenerated multiple times with NaCl/NaOH. A bench-scale pilot test further confirmed the feasibility of granulated MK-GP in practical conditions at a municipal wastewater treatment plant: consistently <4 mg/L [Formula: see text] could be reached even though wastewater had low temperature (approx. 10°C). The results indicate that powdered or granulated MK-GP might have practical potential for removal and possible recovery of [Formula: see text] from municipal wastewaters. The simple and low-energy preparation method for MK-GP further increases the significance of the results.
650    _2
$a amoniové sloučeniny $x analýza $7 D064751
650    _2
$a kaolin $x chemie $7 D007616
650    _2
$a polymery $x chemie $7 D011108
650    _2
$a odpad tekutý - odstraňování $x metody $7 D014865
650    _2
$a odpadní voda $x chemie $7 D062065
650    _2
$a chemické látky znečišťující vodu $x analýza $7 D014874
655    _2
$a časopisecké články $7 D016428
700    1_
$a Věžníková, Kateřina $u b Faculty of Chemistry , Brno University of Technology , Purkyňova Brno , Czech Republic.
700    1_
$a Tolonen, Emma-Tuulia $u a Kajaani University of Applied Sciences , Kajaani , Finland. c Research Unit of Sustainable Chemistry , University of Oulu , Oulu , Finland.
700    1_
$a Runtti, Hanna $u c Research Unit of Sustainable Chemistry , University of Oulu , Oulu , Finland.
700    1_
$a Yliniemi, Juho $u d Fibre and Particle Engineering Research Unit , University of Oulu , Oulu , Finland.
700    1_
$a Hu, Tao $u c Research Unit of Sustainable Chemistry , University of Oulu , Oulu , Finland.
700    1_
$a Kemppainen, Kimmo $u a Kajaani University of Applied Sciences , Kajaani , Finland.
700    1_
$a Lassi, Ulla $u c Research Unit of Sustainable Chemistry , University of Oulu , Oulu , Finland. e Unit of Applied Chemistry , University of Jyvaskyla, Kokkola University Consortium Chydenius , Kokkola , Finland.
773    0_
$w MED00180216 $t Environmental technology $x 0959-3330 $g Roč. 39, č. 4 (2018), s. 414-423
856    41
$u https://pubmed.ncbi.nlm.nih.gov/28278098 $y Pubmed
910    __
$a ABA008 $b sig $c sign $y a $z 0
990    __
$a 20180404 $b ABA008
991    __
$a 20180416093532 $b ABA008
999    __
$a ok $b bmc $g 1288242 $s 1007569
BAS    __
$a 3
BAS    __
$a PreBMC
BMC    __
$a 2018 $b 39 $c 4 $d 414-423 $e 20170316 $i 0959-3330 $m Environmental technology $n Environ Technol $x MED00180216
LZP    __
$a Pubmed-20180404

Najít záznam

Citační ukazatele

Pouze přihlášení uživatelé

Možnosti archivace