Journal
DESALINATION AND WATER TREATMENT
Volume 57, Issue 47, Pages 22244-22257Publisher
DESALINATION PUBL
DOI: 10.1080/19443994.2015.1130660
Keywords
Landfill leachate; Pollutants; Bio-char; Remediation; Optimization; Kinetic reaction
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Funding
- Universiti Tunku Abdul Rahman (UTAR) [UTARRF/2013-C2/L12]
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The feasibility of converting sea mango to activated bio-char that can be used to remove organic and inorganic pollutants such as chemical oxygen demand (COD), color, and ammoniacal nitrogen (NH3-N) from landfill leachate was investigated in the present study. The preparation conditions, temperature (400-800 degrees C), bio-char impregnation ratio with KOH (0.5-3), and retention time (1-3 h), were optimized using response surface methodology and subsequently analyzed with analysis of variance. Equilibrium data were best dealt with the pseudo-second-order kinetic model, while the adsorptive removal of organic and inorganic pollutants onto sea mango-derived activated bio-char (SMAB) was thoroughly explained by the Langmuir isotherm model. The treatment conditions such as shaking speed, contact time, adsorbent dosage, and pH were also fine-tuned in order to optimize the overall treatment process. The highest adsorptive removal for color (95.1%), COD (84.94), and NH3-N (95.77) was achieved, respectively. The findings illustrated the applicability of SMAB as an ideal media for the adsorptive treatment of organic and inorganic pollutants from landfill leachate.
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