Grape waste as a biosorbent for removing Cr(VI) from aqueous solution

Chand, Ram; Narimura, Kenji; Kawakita, Hidetaka; Ohto, Keisuke; Watari, Takanori; Inoue, Katsutoshi

doi:10.1016/j.jhazmat.2008.06.084

Cited by 119 publications

(75 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4a, it may be seen that, in equilibrium stage at pH 2, the Cr(VI) ions were completely removed, one part was adsorbed on grape waste, and the other was reduced to trivalent chromium, while at pH 5 the concentration of Cr(III) was in trace, which was also reported by Chand et al 21 Values obtained in program MINTEQ were higher, because in this program, the concentrations of chromium species were determined in pure aquatic solution without an adsorbent, Fig. 5.…”

Section: Effect Of Ph Value On Chromium Adsorption and Speciationsupporting

confidence: 77%

Batch Adsorption of Cr(VI) Ions on Zeolite and Agroindustrial Waste

Kučić

Simonič

Furač

2018

Chem.Biochem.Eng.Q.

View full text Add to dashboard Cite

Several adsorbents, such as natural zeolite clinoptilolite, modified zeolite, grape and olive wastes have been investigated for removal of chromium (VI) ions from aqueous solutions by performing batch kinetic sorption experiments. Natural zeolite, modified zeolite, grape and olive wastes have removed 5 %, 13 %, 73 % and 62 %, respectively, of Cr(VI) ions from aqueous solution. Equilibrium experimental results were fitted to Langmuir and Freundlich isotherms to obtain the characteristic parameters of each model. According to an evaluation using Langmuir equation, the maximum Cr(VI) adsorption capacity of grape waste was 108.12 mg g -1 and of olive waste 100.47 mg g -1 at pH 2. The equilibrium kinetic data were analyzed using pseudo-first-order and pseudo-second-order models, and parameters were estimated by using non-linear regression analysis. Langmuir model and pseudo-second-order model describes better the obtained results than Freundlich model and the pseudo-first-order model. The adsorption of Cr(VI) ions increased with temperature and the negative values of ∆G° for investigated adsorbents confirmed the feasibility and spontaneous nature of the adsorption process.

show abstract

Section: Effect Of Ph Value On Chromium Adsorption and Speciationsupporting

confidence: 77%

Batch Adsorption of Cr(VI) Ions on Zeolite and Agroindustrial Waste

Kučić

Simonič

Furač

2018

Chem.Biochem.Eng.Q.

View full text Add to dashboard Cite

show abstract

“…Besides polyphenols, grape waste contains proteins, polysaccharides and lignin, which are associated with functional groups responsible for metal ion adsorption, thus making this agricultural waste a good alternative to expensive synthetic adsorbents. Chand et al 9 tested cross-linked grape waste gel for the adsorption and separation of Cr(VI) ions from synthetic aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Influence of Temperature and Drying Time on Extraction Yield of Phenolic Compounds from Grape Pomace Variety “Portogizac”

Planinić¹

2015

Chem. Biochem. Eng. Q.

View full text Add to dashboard Cite

show abstract

“…So, the Cr(VI) adsorption capacity of larch tannin modified material is lower than Mimosa tannin gel (Nakano et al 2001) and Persimmon tannin gel (Nakajima and Baba 2004). The relatively lower monolayer adsorption capacity of LTNA compared to the reported larch tannin adsorbent (Chand et al 2009) is due to the presence of active acidic functional groups and hydroxy groups on LTNA. The adsorption capacity value K F and n F for Cr(VI) obtained from Freundlich model were evaluated to be 11.122mg/g and 1.105g/L, respectively.…”

Section: Isotherm Studiesmentioning

confidence: 86%

Adsorption Behavior of Cr(VI) from Aqueous Solutions by Microwave Modified Porous Larch Tannin Resin

Huang¹,

Bin²,

Gui-zhen³

2013

BioResources

View full text Add to dashboard Cite

Larch tannin resin (LTNA) was prepared by a microwave modified crosslinking reaction. The adsorption of chromium(VI) from an aqueous solution by LTNA was studied using batch adsorption experiments. LTNA has a large number of pores, the size of which are about 250 nm. After adsorption, the internal structure of the LTNA resin assumed an obvious three-dimensional network. The adsorption of Cr(VI) on LTNA was investigated as a function of pH, dose of adsorbent, and adsorption time. The results indicated that the removal of Cr(VI) was pH-dependent. The optimum adsorption was observed at pH 1.0, and the maximum adsorption capacity was 9.134 mg/g. The Cr(VI) adsorption by the LTNA gel obeyed the Langmuir adsorption isotherm. The kinetic processes of Cr(VI) adsorption onto LTNA could be acceptably explained by the pseudo-second order kinetic rate model. Thermodynamic parameters revealed the spontaneity and exothermic nature of adsorption. Desorption of adsorbed Cr(VI) was successfully realized with a 0.1 M NaOH solution.

show abstract

Grape waste as a biosorbent for removing Cr(VI) from aqueous solution

Cited by 119 publications

References 25 publications

Batch Adsorption of Cr(VI) Ions on Zeolite and Agroindustrial Waste

Batch Adsorption of Cr(VI) Ions on Zeolite and Agroindustrial Waste

Influence of Temperature and Drying Time on Extraction Yield of Phenolic Compounds from Grape Pomace Variety “Portogizac”

Adsorption Behavior of Cr(VI) from Aqueous Solutions by Microwave Modified Porous Larch Tannin Resin

Contact Info

Product

Resources

About