Flotation in Water and Wastewater Treatment

Kyzas, George Z.; Matis, K. A.

doi:10.3390/pr6080116

Cited by 115 publications

(42 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…High membrane cost, requirement of resin fouling, resin regeneration [22,23] Coagulation and flocculation Settling and dewatering of sludge High cost, large consumption of chemicals [24,25] Membrane filtration [7,30] The majority of these methods [7,[18][19][20][21][22][23][24][25][26][27][28][29][30] are expensive, ineffective in certain concentrations, or time-consuming, and adsorption is limited by the cost of the adsorption material [1,[6][7][8][9]31,32]. For these reasons, the choice of sorbent is crucial for the development of a simple, efficient, inexpensive, and environmentally friendly water purification method [33,34].…”

Section: Advantages Disadvantages Referencementioning

confidence: 99%

“…The majority of these methods [ 7 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ] are expensive, ineffective in certain concentrations, or time-consuming, and adsorption is limited by the cost of the adsorption material [ 1 , 6 , 7 , 8 , 9 , 31 , 32 ]. For these reasons, the choice of sorbent is crucial for the development of a simple, efficient, inexpensive, and environmentally friendly water purification method [ 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Wooden Sawdust Treatments on Cu(II) and Zn(II) Removal from Water

et al. 2020

View full text Add to dashboard Cite

Organic waste materials and semi-products containing cellulose are used as low-cost adsorbents that are able to compete with conventional sorbents. In addition, their capacity to bind heavy metal ions can be intensified by chemical treatments using mineral and organic acids, bases, oxidizing agents, and organic compounds. In this paper, we studied the biosorption capacity of natural and modified wooden sawdust of poplar, cherry, spruce, and hornbeam in order to remove heavy metals from acidic model solutions. The Fourier transform infrared spectroscopy (FTIR) spectra showed changes of the functional groups due to the alkaline modification of sawdust, which manifested in the considerably increased intensity of the hydroxyl peaks. The adsorption isotherm models clearly indicated that the adsorptive behavior of metal ions in treated sawdust satisfied not only the Langmuir model, but also the Freundlich model. The adsorption data obtained for studied sorbents were better fitted by the Langmuir isotherm model for both metals, except for spruce sawdust. Surface complexation and ion exchange are the major mechanisms involved in metal ion removal. We investigated the efficiency of the alkaline modified sawdust for metal removal under various initial concentrations of Cu(II) and Zn(II) from model solutions. The highest adsorption efficiency values (copper 94.3% at pH 6.8 and zinc 98.2% at pH 7.3) were obtained for poplar modified by KOH. For all types of sawdust, we found that the sorption efficiency of modified sorbents was higher in comparison to untreated sawdust. The value of the pH initially increased more in the case of modified sawdust (8.2 for zinc removal with spruce NaOH) and then slowly decreased (7.0 for Zn(II) with spruce NaOH).

show abstract

Section: Advantages Disadvantages Referencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Wooden Sawdust Treatments on Cu(II) and Zn(II) Removal from Water

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Flotation has direct application to (or we can say that it originates from) mineral processing, which is called "froth flotation". The latter field presents for sure special peculiarities compared to flotation techniques applied to wastewater treatment [1][2][3][4][5]. Haynes started the systematic application of flotation for sulfides in mineral beneficiation in order to efficiently separate them (with the use of oil) from gangue.…”

Section: Introductionmentioning

confidence: 99%

The Flotation Process Can Go Green

Kyzas

Matis

2019

Processes

Self Cite

View full text Add to dashboard Cite

In today’s world of environmental strain, wastewater treatment has become a, more or less, conventional application of flotation—as for instance, in the oil, food, or chemical industries, and in potable water treatment. In this paper, different flotation methods (such as ion, adsorbing colloid, and adsorptive flotation, including biosorption) and techniques will be reviewed; and, in order to explain them further, several applications of these from the laboratory (General and Inorganic Chemical Technology) at Aristotle University of Thessaloniki, Greece (AUTh) will be presented and analyzed, with the main focus on sustainability. The application of flotation as a separation process, when applied in pollution control or during water treatment, was often criticized due to the possible toxicity of the applied collectors; however, the use of biosurfactants may alleviate this concern and enhance its further acceptability.

show abstract

“…Some technologies like thermal distillation, reverse osmosis (RO), adsorption, flotation, nanofiltration and electrochemical, electrocoagulation (EC), electrodeposition, electrooxidation (EO) and electroflotation (EF) can be used to treat polluted water. However, most of the discussed methods have some major drawbacks [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Treatment of Saline Water Using Electrocoagulation with Combined Electrical Connection of Electrodes

et al. 2019

View full text Add to dashboard Cite

Saline water treatment has become increasingly important for drinking water supplies. The aim of this study was to evaluate the ability of the electrocoagulation (EC) process with combined aluminum electrodes in removing various types of salt from water samples collected at Sawa Lake, Al-Muthanna, Iraq. The targeted types of salt include total dissolved solids (TDS), chloride salt (Cl−), bromine (Br−), and sulphate (SO42−). A bench scale consisting of combined EC configurations with static electrodes was employed under combined electrical connections. The effect of the six variables factors, such as applied current density (I), reaction time (RT), pH, temperature (T), stirring speed (Mrpm) and inter electrode distance (IED) were observed to achieve a higher removal of TDS, Cl−, Br− and SO42−. Initial results showed the following optimum operating conditions: I = 2 mA/cm2, RT = 80 min, pH = 8, T = 25 °C, IED = 1 cm and Mrpm = 500. The maximum removal efficiency of TDS, Cl−, Br− and SO42− were 91%, 93%, 92% and 90%, respectively. It can be concluded that the EC method applied in the present study was effective to removing salts from lake water.

show abstract

Flotation in Water and Wastewater Treatment

Cited by 115 publications

References 52 publications

Influence of Wooden Sawdust Treatments on Cu(II) and Zn(II) Removal from Water

Influence of Wooden Sawdust Treatments on Cu(II) and Zn(II) Removal from Water

The Flotation Process Can Go Green

Treatment of Saline Water Using Electrocoagulation with Combined Electrical Connection of Electrodes

Contact Info

Product

Resources

About