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RISS 인기검색어
- 검색키워드
- 저자 : B. Dojcinovic (검색결과 1 건)
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Waste Jute Fabric as a Biosorbent for Heavy Metal Ions from Aqueous Solution
A. Ivanovska,B. Dojcinovic,S. Maletic,L. Pavun,K. Asanovic,M. Kostic 한국섬유공학회 2020 Fibers and polymers Vol.21 No.9
The influence of the chemical composition on the biosorption potential of waste jute fabric for Ni2+, Cu2+, and Zn2+was investigated. The raw jute fabric was treated with sodium hydroxide or sodium chlorite to selectively removehemicelluloses and lignin, respectively. All jute fabrics were characterized by determination of their chemical composition aswell as functional group content. The effects of solution pH, contact time, and initial metal ion concentration on thebiosorption from monometallic and polymetallic solution by jute fabrics were investigated. The maximum biosorptioncapacity for all heavy metal ions was observed at pH 5.5. Concerning the contact time, the raw jute fabric shows more than72 % of the total uptake capacity of Ni2+, Cu2+, and Zn2+ within 1 h, while the jute fabrics with lower hemicelluloses andlignin content show between 72-85 % of the total uptake capacity within 3 h. Increased initial metal ion concentration from10 to 20 mg/l in monometallic solution caused an increase in the total uptake capacity of jute fabrics with lowerhemicelluloses and lignin content for 47-69 % (Ni2+), 42-63 % (Cu2+), and 22-37 % (Zn2+). The biosorption capacity of alkalitreated jute fabrics was affected by the changes in the total amount of carboxyl and aldehyde groups that accompany thehemicelluloses removal. In the case of the oxidative treatment, the biosorption capacity was affected by the lignin content aswell as the amount of introduced carboxyl groups. The best biosorption performance possesses jute fabric with 63.2 % lowerlignin content as well as 81.1 % higher amount of carboxyl groups; biosorption capacity toward Ni2+, Cu2+, and Zn2+ inmonometallic solution is about 2.4; 2.2 and 3.5 times higher compared to the raw jute fabric, respectively. All jute fabricsexhibited the same affinity order (which is independent on the initial metal ion concentrations) toward heavy metal ions: Ni2+> Cu2+ > Zn2+ in the case of competitive biosorption. An increase in the initial metal ion concentration for two times in thepolymetallic solution caused about a 35-59 % increase in the total uptake capacity of Ni2+, while the total uptake capacities ofCu2+ and Zn2+ increased for 19-38 % and 18-65 %, respectively.
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