Removal of Nickel onto Alkali Treated Rice Bran

• Published in: Water, air, and soil pollution Vol. 197; no. 1-4; pp. 361 - 370
• Main Authors: Zafar, Muhammad Nadeem, Abbas, Imran, Nadeem, Raziya, Sheikh, Munir Ahmad, Ghauri, Muhammad Afzal
• Format: Journal Article
• Language: English
• Published: Dordrecht Dordrecht : Springer Netherlands 01.02.2009; Springer Netherlands; Springer; Springer Nature B.V
• Subjects: adsorbents; Adsorption; Alkali treated; Alkalies; Amino groups; Analytical Chemistry; Analytisk kemi; Applied sciences; Atmospheric Protection/Air Quality Control/Air Pollution; binding properties; Binding sites; Biochemistry; Biomass; Biomass energy; Biosorption; Calcium hydroxide; Chemical Sciences; Climate Change/Climate Change Impacts; Earth and Environmental Science; Environment; Environmental monitoring; Exact sciences and technology; Experiments; Heavy metals; Hydrogeology; Industrial wastewaters; Isotherm; Kemi; Metal ions; morphology; Natural Sciences; Naturvetenskap; Nickel; Oryza sativa; Particle size; Pollution; Rice; Rice bran; Sodium hydroxide; Soil Science & Conservation; sorption; sorption isotherms; Studies; Surface; wastewater treatment; Wastewaters; Water Quality/Water Pollution; Water treatment and pollution; Isotherm; Nickel; Biosorption; Alkali treated; Surface morphology; Rice bran; Liquid solid adsorption; Adsorption capacity; Bioadsorbents; Isotherm . Alkali treated . Surface morphology; Heavy metal; Vegetal waste; Waste management; Trace element; Industrial waste water; Upgrading; Waste reuse; Physicochemical purification; Agricultural waste; Pretreatment; Waste water purification
• ISSN: 0049-6979; 1573-2932; 1573-2932
• DOI: 10.1007/s11270-008-9817-6

Different bases were used for the pretreatment of Rice bran biomass. Pretreatment with bases such as NaOH, Ca(OH)₂ and Al(OH)₃ were found to improve biosorption capacity. But in Rice bran, treatment with 0.5 M NaOH increased its nickel selective adsorption ability very much. The main binding site of nickel in NaOH treated cells is assumed to be carboxylic, hydroxyl, sulphate, phosphate and amino groups. The maximum biosorption capacity of Rice bran biomass subjected to 0.5 M NaOH was 198.92 mg g⁻¹. Kinetic and isotherm experiments were carried out at the optimal pH 6.0 for nickel. The Freundlich and Langmuir models were used to describe the uptake of nickel on NaOH pretreated Rice bran. To improve the biosorption capacity for metal ions by biomass, alkali pretreatment is an effective method.