Removal of 4-Chlorophenol from Contaminated Wastewater by Using Low-Cost Coconut Shell Waste Modified with Different Chemical Agents
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概要
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This research investigates the treatment performances of coconut shell charcoal (CSC) in batch mode for the removal of 4-chlorophenol (4-CP) from contaminated wastewater. Surface modification of CSC with TiO<SUB>2</SUB>, HNO<SUB>3</SUB> and/or NaOH was undertaken to improve its removal performance for target compound. The effects of dose and pH for 4-CP removal were evaluated and statistically compared. With an initial 4-CP concentration of 10 mg/L, under optimized conditions (9 g/L of dose, pH 2.0, agitation speed: 150 rpm, contact time: 60 minutes), the NaOH-treated CSC has demonstrated a substantially higher 4-CP removal (88 %) than those treated with HNO<SUB>3</SUB> (65 %) or coated with Ti0<SUB>2</SUB> (72 %) (<I>p</I>≤0.05, Anova test) . These results indicate that the surface chemistry of the adsorbent played major roles in the removal of 4-CP through electrostatic interactions.
- 日本イオン交換学会の論文
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