Competitive biosorption of heavy metals from aqueous solutions onto Streptomyces rimosus

Yous, Radia; Mohellebi, Faroudja; Cherifi, Hakima; Amrane, Abdeltif

doi:10.1007/s11814-018-0004-1

Cited by 18 publications

(10 citation statements)

References 42 publications

(36 reference statements)

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“…It can be seen graphically that a saturation point is reached where no further adsorption can occur afterwards, this is a plateau which characterizes the Langmuir 8in Table 1. Three cases of adsorption can be distinguished according to the value of RL, the adsorption is unfavorable when the separation factor value is strictly superior to one, if the RL=1 the adsorption is said to be linear, when 0<RL<1 the adsorption is said to be favorable (Yous et al, 2018). The measured values for the studied dyes are less than one and more than 0 (RL= 0.053 for MB and 0.909 for MO).…”

Section: Table 3 Constants For Isothermal Models Of Dyes Adsorption On Natural Phosphatementioning

confidence: 94%

“…This confirms the results obtained by XRD (Figure 1). Both bands at 1,616 and 1,630 cm -1 are due to the bending vibration of the hydroxyl (OH -) (H-O-H) (Nikcevic et al, 2004;Yous et al, 2018;Aines and Rossman, 1984;Boughzala and Bouzouita, 2015). A series of vibrations was observed in the 3,200-3,550 cm -1 region which could be assigned to OH group vibrations bound by hydrogen bonds (O-H asymmetrical and symmetrical stretching vibrations).…”

Section: Infrared Spectroscopymentioning

confidence: 98%

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Natural Phosphates Characterization and Evaluation of their Removal Efficiency of Methylene Blue and Methyl Orange from Aqueous Media

Assimeddine

Abdennouri

Barka

et al. 2021

Environ. Nat. Resour. J.

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This study evaluated the capacity of a rock phosphate for the adsorption of organic dyes methylene blue MB and methyl orange MO in aqueous solution, in order to minimize the impact of these dyes on the environment. The physicochemical characterization of natural phosphates (NP) shows that its mineralogy is carbonate-fluorapatite, calcite and quartz, as demonstrated by X-ray diffraction. An infrared (IR) analysis completed the structural study by confirming the characteristic bands of a carbonated fluorapatite type B. The influence of adsorbent dose, pH, initial concentration and temperature of the dye solution on adsorption onto NP was studied. The experimental results show that MB is adsorbed almost entirely at an adsorbent dose of 1 g/L and at a more basic pH and that the Langmuir model describes its isotherm well. For MO, adsorption is performed at acidic pH, such that discoloration reaches 60% at pH 4 and NP adsorbent dose of 10 g/L. The maximum adsorbed amounts of MB (pH=9) and MO (pH=4) were found to be 9.54 and 1.09 mg/g, respectively. The kinetic data were analyzed to show that the pseudo-second-order model seems to be the most appropriate to describe the adsorption dynamics of both dyes on the naturel phosphate. The thermodynamic results show that the adsorption is endothermic for MB and exothermic for MO. So, rock phosphate shows a good potential as a sorbent for cationic dyes removal from wastewater.

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Section: Table 3 Constants For Isothermal Models Of Dyes Adsorption On Natural Phosphatementioning

confidence: 94%

Section: Infrared Spectroscopymentioning

confidence: 98%

Natural Phosphates Characterization and Evaluation of their Removal Efficiency of Methylene Blue and Methyl Orange from Aqueous Media

Assimeddine

Abdennouri

Barka

et al. 2021

Environ. Nat. Resour. J.

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“…The maximum concentrations of cadmium and iron in industrial liquid effluent discharges are 0.2 and 3 mg/L, respectively (Ouyahia 2006). In general, these two metals are not found separately but together as a mixture in wastewater (Yous et al 2018). It therefore becomes essential to find and develop feasible and sustainable wastewater treatment methods.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous sorption of heavy metals on Algerian Bentonite: mechanism study

Yous

Khalladi

Cherifi

2021

Water Science and Technology

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Industrialization has induced tremendous environmental problems, particularly surface and underground water pollution by harmful heavy metals. In this work, we attempt to eliminate simultaneously iron and cadmium from aqueous solutions by adsorption on Algerian Bentonite. This abundant material was used without any modification. The sorption mechanism was investigated, and effects of pH, initial adsorbate and adsorbent concentrations were studied. The kinetics study revealed that equilibrium was reached after 120 min for both metals, and maximal adsorbed quantities of cadmium (76 mg/g) and iron (55 mg/g ) were obtained at pH = 10 and 8 respectively. Different kinetic models were tested, such as pseudo first-order, pseudo second-order, film and intraparticle diffusion models. The pseudo second-order model fits well the experimental data. Biot number values (2–39) show that the simultaneous sorption process is controlled by film diffusion due to electrostatic interactions between negatively charged surface and cations, then by the internal diffusion and formation of bonds between cations and adsorbent constituents. Also, compared to iron, the high and rapid sorption of cadmium reflects the selective nature of the sorption process. These results show that raw bentonite could be used without further treatment as an efficient sorbent for heavy metal mixtures.

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“…This technology has been used as an alternative method of removing harmful toxic heavy metals by taking advantage of biological adsorption properties [5]. Biosorbents, or adsorbents used in biosorption, are prepared using various types of biomass including algae, aquatic plants, moss, bacteria, and sewage-sludge [6][7][8]. Sewage sludge is one of the most abundant types of microbial biomass.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of metal removal performance of rod-type biosorbent prepared from sewage-sludge

Seo

Kim

Park

et al. 2019

Environmental Engineering Research

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The aim of this work was to evaluate the potential use of recycled sewage-sludge as a biosorbent for removing various metals from aqueous solution. To improve adsorption capacity and accomplish easy solid-liquid separation, the sludge was immobilized into the rod type with Ca-alginate. The removal performance was analyzed through kinetic and equilibrium studies. We conducted batch experiments examining the removal of cationic metals and anionic metals/metalloid by the rod-type biosorbent (cations: Cd(II), Cu(II), Cr(III), Fe(II), Ni(II), Pb(II), Zn(II), Mn(II), Al(III), As(III), and Fe(III); anions: As(V), Cr(VI) and Mn(VII)).The rod-type biosorbent, which was manufactured using sludge and alginate, showed higher adsorption capability for the removal of cationic metal than anionic metal. In evaluations of cation adsorption, divalent cations adsorbed more and faster than trivalent cations. The maximum uptake of Cd(II) was determined to be 67.29 mg/g, which was higher than those of other sludge adsorbents reported in the literature. In evaluations of anions, As(V), Cr(VI) and Mn(VII) were removed by different mechanisms. In this study, we simultaneously evaluated the adsorption performance of a new biosorbent for cationic and anionic metals. Our findings are expected to contribute to the commercialization of sludge-based biosorbents.

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Competitive biosorption of heavy metals from aqueous solutions onto Streptomyces rimosus

Cited by 18 publications

References 42 publications

Natural Phosphates Characterization and Evaluation of their Removal Efficiency of Methylene Blue and Methyl Orange from Aqueous Media

Natural Phosphates Characterization and Evaluation of their Removal Efficiency of Methylene Blue and Methyl Orange from Aqueous Media

Simultaneous sorption of heavy metals on Algerian Bentonite: mechanism study

Evaluation of metal removal performance of rod-type biosorbent prepared from sewage-sludge

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