Ji, Min-Kyu Park, Won-Bae Khan, Moonis Ali Abou-Shanab, Reda A. I. Kim, Yongje Cho, Yunchul Choi, Jaeyoung Song, Hocheol Jeon, Byong-Hun 2024-01-20T15:02:49Z 2024-01-20T15:02:49Z 2022-01-10 2012-04 1464-0325 https://pubs.kist.re.kr/handle/201004/129356 Nitrate (NO3-) is a commonly found contaminant in groundwater and surface water. It has created a major water quality problem worldwide. The laboratory batch experiments were conducted to investigate the feasibility of HCl-treated zero-valent iron (Fe-0) combined with different adsorbents as hybrid systems for simultaneous removal of nitrate (NO3-) and ammonium (NH4+) ions from aqueous solution. The maximum NO3- removal in combined Fe-0-granular activated carbon (GAC), Fe-0-filtralite and Fe-0-sepiolite systems was 86, 96 and 99%, respectively, at 45 degrees C for 24 h reaction time. The NO3- removal rate increased with the increase in initial NO3- concentration. The NO3- removal efficiency by hybrid systems was in the order of sepiolite > filtralite > GAC. The NH4+ produced during the denitrification process by Fe-0 was successfully removed by the adsorbents, with the removal efficiency in the order of GAC > sepiolite > filtralite. Results of the present study suggest that the use of a hybrid system could be a promising technology for achieving simultaneous removal of NO3- and NH4+ ions from aqueous solution. English ROYAL SOC CHEMISTRY GREEN RUST REDUCTION ADSORPTION WATER TRANSPORT SEPIOLITE PRODUCTS KINETICS NITROGEN DYES Nitrate and ammonium ions removal from groundwater by a hybrid system of zero-valent iron combined with adsorbents Article 10.1039/c2em10911e 1 JOURNAL OF ENVIRONMENTAL MONITORING, v.14, no.4, pp.1153 - 1158 JOURNAL OF ENVIRONMENTAL MONITORING 14 4 1153 1158 scie scopus 000302017700004 2-s2.0-84859343361 Chemistry, Analytical Environmental Sciences Chemistry Environmental Sciences & Ecology Article GREEN RUST REDUCTION ADSORPTION WATER TRANSPORT SEPIOLITE PRODUCTS KINETICS NITROGEN DYES Nitrate Groubdwater Sepiolite Filtralite GAC