title: Orange peel as an adsorbent in the removal of acid violet 17 (acid dye) from aqueous solutions.
abstract: The effectiveness of orange peel in adsorbing Acid violet 17 from aqueous solutions has been studied as a function of agitation time, adsorbent dosage, initial dye concentration and pH. The adsorption follows both Langmuir and Freundlich isotherms. The adsorption capacity Q0 was 19.88 mg/g at initial pH 6.3. The equilibrium time was found to be 80 min for 10, 20, 30 and 40 mg/L, dye concentration respectively. A maximum removal of 87% was obtained at pH 2.0 for an adsorbent dose of 600 mg/50 ml of 10 mg/L dye concentration. Adsorption increases with increase in pH. Maximum desorption of 60% was achieved in water medium at pH 10.0.
authors.affiliation: Department of Environmental Sciences, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India. rajeshwarisivaraj@mailcity.com
authors.forename: R
authors.initials: R
authors.lastname: Sivaraj
authors.forename: C
authors.initials: C
authors.lastname: Namasivayam
authors.forename: K
authors.initials: K
authors.lastname: Kadirvelu
mesh_terms: D000327:Adsorption; D005638:Fruit; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D009153:Mutagens / Q000493:pharmacokinetics*; D012037:Refuse Disposal / Q000379:methods*; D012394:Rosaniline Dyes / Q000493:pharmacokinetics*
chemical_list: D009153:Mutagens; D012394:Rosaniline Dyes; C031693:violet BNP