Continuous biosorption of Cu and Zn by immobilized waste biomass Sargassum sp.

Valdman, E.; Erijman, Leonardo; Pessoa, Fernando; Leite, Selma Gomes Ferreira

doi:10.1016/s0032-9592(00)00288-0

Cited by 155 publications

(75 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In fact, this dynamic process has been widely used as it combines advantages such as reduced space, simple operation, treatment of large volumes of effluent, significant yield, large range of feed concentrations and easy scaling-up (Valdman et al, 2001;Silva et al, 2002). Besides studying activated carbon-packed beds, research has also been focused on investigating the use of residues as alternative sorbents, seeking to reduce both the sorbent production and disposal costs.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Lambrecht

Barros

Arroyo

et al. 2015

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-In this study the influence of the volumetric flow rate and feed concentration was investigated for the adsorption of the reactive dye Blue 5G. Experiments were carried out in a bed packed with retorted shale, at 30 o C. The ranges investigated were flow rate 2 -10 mL/min and the feed concentration 13-105 mg/L. Mathematical models were used to represent the dynamic sorption. The double resistance model considers the effects of the axial dispersion and the mass transfer resistance of the external film and inside the particles. As a result, the mass transfer coefficient of the external film and the internal mass transfer coefficient were estimated. The Thomas model was used to simulate the experimental data. In this model the fitted parameter was the adsorption kinetic constant. The first model provided an acceptable representation of the dynamic uptake of the reactive dye Blue 5G.

show abstract

Section: Introductionmentioning

confidence: 99%

Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Lambrecht

Barros

Arroyo

et al. 2015

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Heavy metals are major pollutants in marine, ground, industrial and even treated wastewaters. [2]. Industrial waste constitutes the major source of various kinds of metal pollution in natural waters.…”

Section: Introductionmentioning

confidence: 99%

Teawaste as An Adsorbent for Heavy Metal Removal from Industrial Wastewaters

Mahvi¹,

Naghipour²,

Vaezi³

et al. 2005

American J. of Applied Sciences

125

View full text Add to dashboard Cite

Water used in industries creates a wastewater that has a potential hazard for our environment because of introducing various contaminants such as heavy metals into soil and water resources. In this study, removal of cadmium, lead and nickel from industrial wastewaters has been investigated by using teawaste as a natural adsorbent. The research is a bench scale experimental type and analyses have performed by using different amounts of adsorbent in solutions with 5 different concentrations of each metal and also in a mixed combination. Besides, the effect of various amounts of teawaste used in adsorption efficiency experiments has been investigated. Results indicate that the removal efficiency is highest for lead and is minimum for cadmium. About 94 and 100% lead removal were achieved by using 0.5 and 1.5g adsorbent for solutions having concentrations of 5 and 10 mg/L Pb. Whereas, 1.5g teawaste can treat nickel solution of 5 mg/L concentration with an efficiency of not more that 85.7%. For cadmium, the efficiency was only 77.2% in the same conditions. On the other hand, for mixtures of metals and by applying 0.5 g teawaste, we considered a 3.5% decrease in lead removal efficiency and a 13.2% decrease in nickel adsorption for a mixed solution of 5 mg/L.

show abstract

“…This paper works on the amount of Zn ions that uptake by Alisma Plantago Aquatica by Langmuir and Freundlich isotherm equations for equilibrium, and investigates the kinetic and thermodynamic by different models. The study was carried out in a laboratory fixed bed continuous column using suitable mathematical models [26], [27].…”

Section: Introductionmentioning

confidence: 99%

Studies on Zinc (II) Adsorption Using Alisma Plantago Aquatica

R.¹,

Madhu²

2014

JOCET

View full text Add to dashboard Cite

Abstract-Adsorption is an effective method to remove heavy metals from wastewater. Alisma Plantago Aquatica was used as an adsorbent to remove Zn(II) from aqueous solution. The equilibrium adsorption were analysed using three isotherm models.The adsorption kinetics followed the pseudo-second order model. Isotherm studies have been used to determine the thermodynamic parameters of the process. Temperature change in the range 20-50 o C affected the adsorption capacity. From enthalpy data revealed that the adsorption is endothermic in nature. IR spectrum analysis suggested the presence of hydroxyl, carboxyl and carbonyl groups which are participating in the adsorption of metal ions. The performance of continuous flow packed bed adsorption systems with the biomass was evaluated by plotting the breakthrough curves. It was observed that the breakthrough was strong function of the flow rates and the height of the packed bed. The zinc removal yield decreased with increasing flow rates and initial zinc concentration. Adam Bohart and Wolborska models were applied to the experimental data from dynamic studies on packed bed and were observed to fit the data well with good correlations. The model parameters including the mass transfer coefficient and kinetic parameter were estimated.

show abstract

Continuous biosorption of Cu and Zn by immobilized waste biomass Sargassum sp.

Cited by 155 publications

References 13 publications

Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Teawaste as An Adsorbent for Heavy Metal Removal from Industrial Wastewaters

Studies on Zinc (II) Adsorption Using Alisma Plantago Aquatica

Contact Info

Product

Resources

About