Comparison of new biosorbents based on chemically modified<i>Lagenaria vulgaris</i>shell

Bojić, Danijela V.; Ranđelović, Marjan S.; Zarubica, Aleksandra; Mitrović, Jelena; Radović, Miloš; Purenović, Milovan M.; Bojić, Aleksandar

doi:10.1080/19443994.2013.771287

Cited by 26 publications

(15 citation statements)

References 33 publications

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“…The spectrum for natural Sargassum sp. exhibits several bands of multiple intensities merged to form a broad and strong band in the functional group region between 3200 and 3600 cm -1 , associated with the stretching vibrations of free or bonded OH groups of alcohols and carboxylic acids and also with the presence of inter and intramolecular hydrogen bonding between these hydroxyl groups (Bojić et al 2013). Generally, the stretching vibrations due to -NH group overlapped by the absorption bands of hydroxyl groups also appear in this range (Liu et al 2011).…”

Section: Resultsmentioning

confidence: 99%

Comparative study of natural and modified biomass of Sargassum sp. for removal of Cd2+ and Zn2+ from wastewater

et al. 2017

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Natural as well as acid modified dead biomass of brown marine alga Sargassum sp. was employed for the elimination of cadmium and zinc ions from synthetic wastewater; batch mode experiments were carried out to optimize various factors like adsorbent dosage, contact time, pH, agitation speed and primary metal ions concentration at room temperature (298.15 K) for both types of adsorbents i.e. natural and acid treated. Application of Langmuir and Freundlich isotherms suggested that the modified biomass adsorbed better as compared to the natural one; though sorption on the natural biomass was a physical process while that on the modified one was a physico-chemical process and thus was relatively difficult. The quantity of cadmium ions adsorbed was greater than that of zinc ions. Adsorption equilibrium for the metal ions sorption on treated Sargassum sp. biomass was established within 60 min for both cadmium and zinc ions with 95.3 and 90.1% removal efficiencies, respectively, but it was greatly influenced by the pH of the solution. The optimal conditions in the batch experiments were as follows: cadmium ions were removed effectively using 0.5 g of adsorbent and 5 mg/L initial metal ions concentration at pH 4 and 150 rpm agitation speed whereas the best results for zinc ions were obtained with 1 g of adsorbent and 5 mg/L initial metal ions concentration at pH 3 and 200 rpm agitation speed. The experimental data fitted well to the pseudo first order model as the values of metal uptake capacities were in good agreement with the experimental values. Thermodynamic studies show that the process is spontaneous and endothermic in nature. Desorption and regeneration studies reveal that recovery of biosorbent is low.

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Section: Resultsmentioning

confidence: 99%

Comparative study of natural and modified biomass of Sargassum sp. for removal of Cd2+ and Zn2+ from wastewater

et al. 2017

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“…Ligno-celulozna biomasa kore tikve sudovnjače Lagenaria vulgaris (LV) predstavlja dragoceni agrootpad za ove svrhe. Nativna ili hemijski aktivirana kora LV je uglavnom ispitivana za direktnu sorpciju raznih katjonskih polutanata iz vodenih rastvora, kao što su toksični metali [16], boje [17], herbicidi i farmaceutske supstance [18]. Međutim, LV do sada nije istraživana kao sorbent anjonskih polutanata.…”

Section: Uvodunclassified

Nitrate sorption by modified Lagenaria vulgaris biomass: Kinetic and equilibrium studies

Marković-Nikolić¹,

Nikolić²

2017

Zas Mat

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“…This is due to the large amount of easily available hydroxyl groups existing in the cellulose, hemicelluloses, and lignin, which can easily make a series of chemical reactions, such as condensation, etherification and copolymerization [13,14]. The use of LVS as an efficient and inexpensive alternative biosorbent in natural and activated forms (activated carbon) for the removal of some toxic metal ions from wastewater (Pb 2+ , Cd 2+ , Zn 2+ , Cu 2+ and Ni 2+ ) [7,15,16], and other cationic pollutants, such as dyes [17] or pharmaceuticals [18], was examined. According to the literature, LVS has not been studied as biosorbent for removal of anionic pollutants from aqueous solutions.…”

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The biosorption potential of modified bottle gourd shell for phosphate: Equilibrium, kinetic and thermodynamic studies

Marković-Nikolić¹,

Bojić

et al. 2018

CI&CEQ

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Comparison of new biosorbents based on chemically modifiedLagenaria vulgarisshell

Cited by 26 publications

References 33 publications

Comparative study of natural and modified biomass of Sargassum sp. for removal of Cd2+ and Zn2+ from wastewater

Comparative study of natural and modified biomass of Sargassum sp. for removal of Cd2+ and Zn2+ from wastewater

Nitrate sorption by modified Lagenaria vulgaris biomass: Kinetic and equilibrium studies

The biosorption potential of modified bottle gourd shell for phosphate: Equilibrium, kinetic and thermodynamic studies

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