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- W2708726717 abstract "Environmental contextAmmonium ion, an inorganic pollutant in agricultural land, can induce eutrophication, impacting on water quality. We investigate the adsorption of ammonium ion on surfactant-modified alumina and demonstrate highly efficient removal of ammonium ions by the alumina from two agricultural water samples. Adsorption mechanisms are also proposed based on adsorption isotherms, surface modification and the change in surface charge. AbstractThe adsorptive removal of ammonium ions (NH4+) from aqueous solution using surfactant-modified alumina (SMA) was investigated. The optimum NH4+ adsorption removal conditions on SMA were systematically studied and found to be pH 4, contact time 180min, adsorbent dosage 30mgmL–1 and ionic strength 1mM NaCl. The equilibrium concentration of NH4+ was measured by capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D) and spectrophotometry. Surface modification of α-Al2O3 with the anionic surfactant sodium dodecyl sulfate (SDS) at high salt concentration induced a significant increase of removal efficiency. The change in surface charge and surface modification of α-Al2O3 by pre-adsorption of SDS and subsequent adsorption of NH4+ were evaluated by zeta potential measurements and Fourier-transform infrared spectroscopy. Under optimum adsorption conditions, NH4+ removal from two agricultural water samples achieved very high removal efficiencies of 99.5 and 96.5%. The adsorption of NH4+ onto SMA increases with decreasing NaCl concentration because desorption of SDS from the α-Al2O3 surface is minimised. Experimental results of NH4+–SMA adsorption isotherms at different ionic strengths can be represented well by a two-step adsorption model. Based on adsorption isotherms, surface charge effect and surface modification, we suggest that the adsorption mechanism of NH4+ onto SMA was mainly electrostatic attraction between cationic NH4+ and the negatively charged SMA surface." @default.
- W2708726717 created "2017-06-30" @default.
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- W2708726717 date "2017-01-01" @default.
- W2708726717 modified "2023-10-16" @default.
- W2708726717 title "Adsorptive removal of ammonium ion from aqueous solution using surfactant-modified alumina" @default.
- W2708726717 cites W1522782604 @default.
- W2708726717 cites W1590839727 @default.
- W2708726717 cites W1973826001 @default.
- W2708726717 cites W1974703963 @default.
- W2708726717 cites W1983716101 @default.
- W2708726717 cites W1984729965 @default.
- W2708726717 cites W1985131672 @default.
- W2708726717 cites W1986113254 @default.
- W2708726717 cites W1986411209 @default.
- W2708726717 cites W1986936206 @default.
- W2708726717 cites W1988282587 @default.
- W2708726717 cites W1990461185 @default.
- W2708726717 cites W1995157919 @default.
- W2708726717 cites W1998752821 @default.
- W2708726717 cites W2003648205 @default.
- W2708726717 cites W2008854201 @default.
- W2708726717 cites W2008923702 @default.
- W2708726717 cites W2009603533 @default.
- W2708726717 cites W2016363768 @default.
- W2708726717 cites W2017135056 @default.
- W2708726717 cites W2017590296 @default.
- W2708726717 cites W2020159290 @default.
- W2708726717 cites W2021358274 @default.
- W2708726717 cites W2021442862 @default.
- W2708726717 cites W2026252260 @default.
- W2708726717 cites W2027624111 @default.
- W2708726717 cites W2027900166 @default.
- W2708726717 cites W2029623130 @default.
- W2708726717 cites W2034440295 @default.
- W2708726717 cites W2037970173 @default.
- W2708726717 cites W2038275654 @default.
- W2708726717 cites W2039047060 @default.
- W2708726717 cites W2039643093 @default.
- W2708726717 cites W2045250380 @default.
- W2708726717 cites W2054908949 @default.
- W2708726717 cites W2056163510 @default.
- W2708726717 cites W2063460536 @default.
- W2708726717 cites W2063790422 @default.
- W2708726717 cites W2065555138 @default.
- W2708726717 cites W2067181536 @default.
- W2708726717 cites W2067609431 @default.
- W2708726717 cites W2068248295 @default.
- W2708726717 cites W2068707427 @default.
- W2708726717 cites W2069134412 @default.
- W2708726717 cites W2070636432 @default.
- W2708726717 cites W2073917760 @default.
- W2708726717 cites W2079154800 @default.
- W2708726717 cites W2080629677 @default.
- W2708726717 cites W2080918469 @default.
- W2708726717 cites W2083948951 @default.
- W2708726717 cites W2084249279 @default.
- W2708726717 cites W2085962882 @default.
- W2708726717 cites W2087152722 @default.
- W2708726717 cites W2091354194 @default.
- W2708726717 cites W2093712245 @default.
- W2708726717 cites W2095544880 @default.
- W2708726717 cites W2099753445 @default.
- W2708726717 cites W2109578509 @default.
- W2708726717 cites W2118143534 @default.
- W2708726717 cites W2137002618 @default.
- W2708726717 cites W2137480865 @default.
- W2708726717 cites W2146117693 @default.
- W2708726717 cites W2148729514 @default.
- W2708726717 cites W2160075194 @default.
- W2708726717 cites W2167738970 @default.
- W2708726717 cites W2234397507 @default.
- W2708726717 cites W2305048444 @default.
- W2708726717 cites W2318500852 @default.
- W2708726717 cites W2326808443 @default.
- W2708726717 cites W2407205063 @default.
- W2708726717 cites W2462226888 @default.
- W2708726717 cites W4254923112 @default.
- W2708726717 cites W850305420 @default.
- W2708726717 doi "https://doi.org/10.1071/en17102" @default.
- W2708726717 hasPublicationYear "2017" @default.
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