Removal of Ni(II) ions from aqueous solutions using waste of tea factory: Adsorption on a fixed-bed column

Malkoç, Emine; Nuhoğlu, Yaşar

doi:10.1016/j.jhazmat.2005.11.070

Cited by 257 publications

(126 citation statements)

References 27 publications

(40 reference statements)

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“…This column performance theory is developed to calculate the maximum solid phase concentration of the solute on an adsorbent and the adsorption rate constant for continuous adsorption process in column studies (Malkoc and Nuhoglu 2006;Han et al 2007). The linearized form of the Thomas model for an adsorption column is as follows:…”

Section: The Thomas Modelmentioning

confidence: 99%

Removal of arsenic(III) and arsenic(V) on chemically modified low-cost adsorbent: batch and column operations

et al. 2013

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Batch and column operations were performed utilizing thioglycolated sugarcane carbon (TSCC), a lowcost adsorbent, to remove As(III) and As(V) from aqueous systems. Under optimized batch conditions, the TSCC could remove up to 92.7 and 91.4 % for As(III) and As(V), respectively. An artificial neural network model showed the validity of TSCC as a preferable adsorbent for arsenic [As(III) and As(V)] removal in batch studies. In column operations, removal efficiency increases with increase in influent arsenic concentration and adsorbent dose and decreases with increase in flow rate. At an adsorbent dose of 6.0 g, flow rate 3.0 mL min -1 , and initial arsenic concentration 1,500 lg L -1 , the arsenic uptake capacity of TSCC for As(III) and As(V) was found to be 85.01 and 83.82 lg g -1 , respectively. The Thomas model was used to analyze the column experimental data. Results from the column operations indicated that the adsorption behavior of arsenic [As(III) and As(V)] fits exceptionally well with the Thomas model with high correlation coefficient and very low standard error. Examinations of scanning electron microscopy and FTIR spectroscopy reveal that high arsenic adsorption favors surface complexation on the adsorbent surface.

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Section: The Thomas Modelmentioning

confidence: 99%

Removal of arsenic(III) and arsenic(V) on chemically modified low-cost adsorbent: batch and column operations

et al. 2013

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“…In Turkey, tea wastes have been burned for energy production (Malkoc and Nuhoglu 2006). However, there is little to no information on the application of these resources for pulp and paper production.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Tea Wastes in Usage Pulp and Paper Production

Tutuş,

Kazaskeroğlu,

Çiçekler

2015

BioResources

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The objective of this study was to characterize the properties of pulp and paper produced from tea (Camellia sinensis) wastes, an agricultural residue widely available in Turkey, using the kraft-anthraquinone (AQ) cooking method. The chemical components and fiber morphology of tea wastes were investigated. The results indicated that tea wastes had low holocellulose, cellulose, and α-cellulose contents and high lignin content. Also, the suitability of the fiber for pulp and paper production was examined, and the fiber length, fiber width, lumen diameter, and cell wall thickness were measured. According to these values, it was found that the strength properties of papers obtained from tea wastes were insufficient. Therefore, tea waste pulps were mixed with Turkish pine pulps at various ratios. Twelve different cooking experiments were performed on the tea wastes, and the cooking with the best pulp yield was used for mixing. The second cooking, with 0.1% AQ, gave the best yield (33.26%), an increase of about 3.51% compared to the first cooking with no AQ. The physical and optical properties of the papers were also examined. Results showed that paper properties were improved by increasing the Turkish pine pulp rate. Consequently, tea wastes can be used in pulp and paper production when combined with softwood pulps.

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“…9,32 Table 2 reports the breakthrough capacities calculated by eq 2 at both initial concentrations and for both metals. No significant differences were observed in the sorption capacity when the initial metal concentration was increased.…”

Section: Effect Of Initial Cd(ii) and Pb(ii)mentioning

confidence: 99%

“…6,8 The ability of biological materials to retain metal ions has received considerable attention for the development of an efficient, clean, and cheap technology for wastewater treatment. 9 One of these sorbents is grape stalk wastes generated in the wine production process, which has been satisfactorily applied in batch studies of copper and nickel, 10,11 lead and cadmium, 12 and chromium removal; 13 previous studies demonstrate that grape stalks are a prominent sorbent for nickel and copper removal in a fixed bed column. 14,15 In these works, sorption of metal ions onto grape stalks released an equivalent amount of alkaline and alkaline earth metals (K + , Mg 2+ , and Ca 2+ ) as well as protons, indicating that ionic exchange is the predominant process responsible for metal ion uptake.…”

Section: Introductionmentioning

confidence: 99%

Cadmium and Lead Removal from Aqueous Solution by Grape Stalk Wastes: Modeling of a Fixed-Bed Column

et al. 2010

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Grape stalk wastes generated in the wine production process were used for the removal of cadmium and lead ions from aqueous solutions. The experimental breakthrough curves (BTC) were obtained from fixedbed columns. Experiments were carried out to evaluate the influence of both inlet metal concentration and sorbent particle size. The experimental data were fitted to the Thomas model, a well-established fixed-bed sorption model. The theoretical sorption capacities obtained by the Thomas model were in good agreement with the breakthrough capacities determined from the sorption data. The CXTFIT code was used to determine the transport and sorption parameters of the convective-dispersive equation (CDE) and the two-site deterministic nonequilibrium (TSM/CDE) model by adjusting the models to the experimental breakthrough curves. The results showed that sorption capacities as well as both transport and sorption parameters were affected by the initial metal concentration as well as by the sorbent particle size.

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Removal of Ni(II) ions from aqueous solutions using waste of tea factory: Adsorption on a fixed-bed column

Cited by 257 publications

References 27 publications

Removal of arsenic(III) and arsenic(V) on chemically modified low-cost adsorbent: batch and column operations

Removal of arsenic(III) and arsenic(V) on chemically modified low-cost adsorbent: batch and column operations

Evaluation of Tea Wastes in Usage Pulp and Paper Production

Cadmium and Lead Removal from Aqueous Solution by Grape Stalk Wastes: Modeling of a Fixed-Bed Column

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