| Title |
Evaluating Cadmium Ion Removal in Aqueous Solutions and Cytotoxicity Evaluation of Carbon, Synthesized Layered Double Hydroxide, and Multi-wall Carbon Nanotube |
| Authors |
김태경 ( Tae-gyung Kim ) ; 박복성 ( Bog-soung Park ) ; 정용준 ( Yong Jun Jung ) |
| DOI |
https://doi.org/10.15681/KSWE.2017.33.2.211 |
| Keywords |
Activated carbon; Adsorption; Cadmium; CNT; Cytotoxicity; LDH |
| Abstract |
This experiment was carried out with the aim of testing cadmium adsorption abilities of multi-wall carbon nanotube (MWCNT), activated carbon, and synthesized layered double hydroxide (LDH). In the acidic condition, only MWCNT was effective in removing cadmium ion from the aqueous phase while other adsorbents rarely removed cadmium ion. The MWCNT and cadmium ion adsorption reactions followed a pseudo first-order kinetic. When the initial pH value was neutral (pH = 7), cadmium ion was rapidly removed by MWCNT and activated carbon in 4 hr (100% and 99.2%, respectively). Increasing adsorbent dosage affects the pH evolution and cadmium ion removal (0 to 99%). Cytotoxicity test showed that both MWCNT and LOH had low cytotoxic effects on three kinds of human cells (A549, HS-294t, and HT-29). |