naa a22 4500 510751334 CHVBK 20180411083105.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11270-013-1505-5 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1505-5 Chemical Modification of Imperata cylindrica Leaf Powder for Heavy Metal Ion Adsorption [Elektronische Daten] [Zhimin Li, Tjoon Teng, Abbas Alkarkhi, Mohd Rafatullah, Ling Low] Imperata cylindrica leaf was used as raw material to prepare two different adsorbents through chemical modification by using sulfuric acid and phosphoric acid. These two adsorbents, sulfuric acid-modified I. cylindrica leaf-based adsorbent (SIC) and phosphoric acid-modified I. cylindrica leaf-based adsorbent (PIC), were used to adsorb nickel ions (Ni2+) from aqueous solutions. The I. cylindrica leaf-based adsorbent and modified I. cylindrica leaf-based adsorbents were characterized by Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM). Different operational parameters such as initial solution pH, adsorbent size, adsorbent dosage, initial Ni2+ ion concentration, and temperature were studied. The adsorption isotherm and the adsorption kinetics were studied systematically. Based on the FT-IR spectrum before and after adsorption of Ni2+ ions, the adsorption mechanism involved both ion exchange and complexation between Ni2+ ions and functional groups on the surface of adsorbents. There was no sulfur and phosphorus detected in the aqueous solutions after adsorption. Therefore, SIC and PIC are effective in adsorbing Ni2+ ions and will not cause secondary pollution to the environment. Springer Science+Business Media Dordrecht, 2013 Imperata cylindrica leaf-based adsorbent nationallicence Nickel nationallicence Chemical modification nationallicence Isotherm nationallicence Kinetics nationallicence Li Zhimin School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut Teng Tjoon School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut Alkarkhi Abbas School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut Rafatullah Mohd School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut Low Ling School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-14 0049-6979 224:4<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1505-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1505-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Zhimin School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut NATIONALLICENCE 700 1- Teng Tjoon School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut NATIONALLICENCE 700 1- Alkarkhi Abbas School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut NATIONALLICENCE 700 1- Rafatullah Mohd School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut NATIONALLICENCE 700 1- Low Ling School of Industrial Technology, Universiti Sains Malaysia, 11800, Penang, Malaysia aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/4(2013-04-01), 1-14 0049-6979 224:4<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer