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| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Min Jang Chang Min Park Shaliza Ibrahim Choe Earn Choong Gooyong Lee |
| Abstract | Magnesium silicate impregnated onto palm-shell waste activated carbon (PPAC) underwent mild hydrothermal treatment under one-pot synthesis, designated as PPAC-MC. Various impregnation ratios from 25 to 300% of MgSiO3 onto PPAC were tested. High levels of MgSiO3 led to high Cu(II) adsorption capacity. A ratio of 1:1 (PPAC-MS 100) was considered optimum because of its chemical stability in solution. The maximum adsorption capacity of PPAC-MS 100 for Cu(II) obtained by isotherm experiments was 369 mg g−1. The kinetic adsorption data fitted to pseudo-second-order model revealed as chemisorption. Increasing ionic strength reduced Cu(II) adsorption capacity due to the competition effect between Na+ and Cu2+. In addition, PPAC-MS 100 showed sufficient adsorption capacity for the removal of Zn(II), Al(III), Fe(II), Mn(II), and As(V), with adsorption capacities of 373 mg g−1, 244 mg g−1, 234 mg g−1, 562 mg g−1, 191 mg g−1, respectively. Three regeneration studies were also conducted. PPAC-MS was characterized using Fourier Transformed Infrared (FTIR), X-Ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Field Emission Scanning Electron Microscope (FESEM). Overall, PPAC-MS 100 is a competitive adsorbent due to its high sorption capacity and sufficient regeneration rate, while remaining economical through the reuse of palm-shell waste materials. |
| e-ISSN | 20754701 |
| DOI | 10.3390/met8100741 |
| Journal | Metals |
| Issue Number | 10 |
| Volume Number | 8 |
| Language | English |
| Publisher | MDPI AG |
| Publisher Date | 2018-01-01 |
| Publisher Place | Switzerland |
| Access Restriction | Open |
| Subject Keyword | Mining Engineering. Metallurgy One-pot Synthesis Palm Shell Waste Activated Carbon Magnesium Silicate Adsorption Potential Toxic Metals |
| Content Type | Text |
| Resource Type | Article |
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