title: Utilization of bivalve shell-treated Zea mays L. (maize) husk leaf as a low-cost biosorbent for enhanced adsorption of malachite green.
abstract: In this work, two low-cost wastes, bivalve shell (BS) and Zea mays L. husk leaf (ZHL), were investigated to adsorb malachite green (MG) from aqueous solutions. The ZHL was treated with calcined BS to give the BS-ZHL, and its ability to adsorb MG was compared with untreated ZHL, calcined BS and Ca(OH)(2)-treated ZHL under several different conditions: pH (2-8), adsorbent dosage (0.25-2.5 g L(-1)), contact time (10-30 min), initial MG concentration (10-200 mg L(-1)) and temperature (303-323 K). The equilibrium studies indicated that the experimental data were in agreement with the Langmuir isotherm model. The use of 2.5 g L(-1) BS-ZHL resulted in the nearly complete removal of 200 mg L(-1) of MG with a maximum adsorption capacity of 81.5 mg g(-1) after 30 min of contact time at pH 6 and 323 K. The results indicated that the BS-ZHL can be used to effectively remove MG from aqueous media.
authors: Institute of Hydrogen Economy, Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia. aishah@cheme.utm.my
authors: A A
authors: AA
authors: Jalil
authors: S
authors: S
authors: Triwahyono
authors: M R
authors: MR
authors: Yaakob
authors: Z Z A
authors: ZZ
authors: Azmi
authors: N
authors: N
authors: Sapawe
authors: N H N
authors: NH
authors: Kamarudin
authors: H D
authors: HD
authors: Setiabudi
authors: N F
authors: NF
authors: Jaafar
authors: S M
authors: SM
authors: Sidik
authors: S H
authors: SH
authors: Adam
authors: B H
authors: BH
authors: Hameed
mesh_terms: D000327:Adsorption; D060105:Animal Shells / Q000737:chemistry*; D000818:Animals; D001673:Biodegradation, Environmental; D049872:Bivalvia / Q000033:anatomy & histology*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008962:Models, Theoretical; D018515:Plant Leaves / Q000737:chemistry*; D012394:Rosaniline Dyes / Q000302:isolation & purification*; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D003313:Zea mays / Q000737:chemistry*
chemical_list: D012394:Rosaniline Dyes; D014874:Water Pollutants, Chemical; C005095:malachite green