Removal of 4-nitrophenol from aqueous solution by using recycled carbon black from waste tyres. (27th April 2021)

• Record Type: Journal Article
• Authors: Chen, Wen-Li; Ali, Umi Fazara Md; Ahmad, Nor Ashikin; Isa, Khairuddin Md; Aziz, Mohd Aizudin Abd; Khamidun, Mohd Hairul
• Is Part Of: International journal of environment and waste management. Volume 27:Number 4(2021)
• Page Start: 455
• Page End: 474
• Publication Date: 2021-04-27
• Subjects: recycling -- waste tyre -- carbon black -- KOH impregnated -- adsorbent -- 4-nitrophenol -- adsorption -- isotherm -- kinetics -- wastewater treatment; Refuse and refuse disposal -- Environmental aspects -- Periodicals; Refuse collection -- Environmental aspects -- Periodicals; Recycling (Waste, etc.) -- Periodicals; 363.72805
• Languages: English
• ISSNs: 1478-9876

Abstract

The conversion of industrial waste into adsorbent for wastewater treatment is desirable as it promises cost-effective adsorbent and reduces waste productions. Adsorption of the 4-nitrophenol by recycled carbon black (rCB) and modified rCB (MCB) was investigated in this research to determine their adsorption capacity by varying various parameters: initial concentration, pH, contact time and adsorbent dosage. The surface morphology, surface chemistry, iodine adsorption number and ash content of both samples were also analysed. The adsorption characteristic of 4-nitrophenol was determined by equilibrium and kinetic studies. Equilibrium isotherm was tested by using Langmuir and Freundlich models. The maximum adsorption capacity of 4-nitrophenol onto rCB and MCB was found to be 7.46 mg/g and 21.83 mg/g, respectively. The adsorption kinetic data of both rCB and MCB fit better to pseudo-second-order kinetic model. This study also demonstrated MCB adsorbent better capability to remove 4-nitrophenol compounds in neutral and basic environments.