Selective metal removal from chromium-containing synthetic effluents using Shewanella xiamenensis biofilm supported on zeolite

Zinicovscaia, Inga; Safonov, Alexey; Boldyrev, Kirill; Gundorina, S. F.; Yushin, Nikita; Petuhov, Oleg; Popova, N. N.

doi:10.1007/s11356-020-07690-y

Cited by 27 publications

(20 citation statements)

References 46 publications

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“…Shewanellae are members of the γ-proteobacteria facultative anaerobes, which were isolated from different environments [ 17 ]. Shewanella species possess good metal bioaccumulation and bioreduction capacities [ 18 , 19 , 20 , 21 ], while information about their biosorption capacity is very limited [ 5 , 22 ].…”

Section: Methodsmentioning

confidence: 99%

“…The zeolite chemical composition according to the manufacturer is Al 2 O 3 —12.9–13.2%; SiO 2 —66.2–78.3%; K 2 O—4.0–4.8%; Na 2 O—1.8-2.2%; CaO—1.8–2.4%; Fe 2 O 3 —0.8–1.2%; H 2 O—10–12%, V, Mn, Cu, Be, Rb, and As less than 0.03%. It represents isometric aggregates of 3-5 mm, consisting of microaggregates of micron size with thin isometric pores and elongate channels [ 5 ].…”

Section: Methodsmentioning

confidence: 99%

“…The difference between experimental values and certified values was in the range of 2–10%. Copper concentration in the experimental solutions was determined following the procedure described in Zinicovscaia et al [ 5 ]. To determine metal concentrations in the real effluent, the Element 2™ High-Resolution ICP-MS systems (The Thermo Scientific, Chemnitz, Germany) were used.…”

Section: Methodsmentioning

confidence: 99%

“…Often, biofilms alone show low adsorption capacity and their removal from treated effluents is a difficult task. To face this challenge, the immobilization of bacteria onto cheap, porous materials is a suitable option [ 4 , 5 ]. Zeolites are excellent ion exchangers which are characterized by a structural negative charge, which makes them perfect candidates for the removal of cations.…”

Section: Introductionmentioning

confidence: 99%

“…The bacterial biofilm of Arthrobacter viscosus placed on activated carbon and natural zeolite was used to adsorb Cr (VI) from solutions [ 10 ]. The possibility of using a biofilm of Shewanella xiamenensis placed on zeolite for the treatment of complex chromium-containing effluents was reported by Zinicovscaia et al [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

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Metal Removal from Nickel-Containing Effluents Using Mineral–Organic Hybrid Adsorbent

et al. 2020

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Nickel is one of the most dangerous environmental pollutants and its removal from wastewater is an important task. The capacity of a mineral–organic hybrid adsorbent, consisting of Shewanella xiamenensis biofilm and zeolite (clinoptilolite of the Chola deposit), to remove metal ions from nickel-containing batch systems under different experimental conditions was tested. The obtained biosorbent was characterized using neutron activation, SEM, and FTIR techniques. It was established that maximum removal of cations, up to 100%, was achieved at pH 6.0. Several mathematical models were applied to describe the equilibrium and kinetics data. The maximum adsorption capacity of the hybrid biosorbent, calculated using the Langmuir model, varied from 3.6 to 3.9 mg/g. Negative Gibbs energy values and positive ∆H° values indicate the spontaneous and endothermic character of the biosorption process. The effects of several parameters (pH and biosorbent dosage) on Ni(II) removal from real effluent, containing nickel with a concentration of 125 mg/L, were investigated. The optimal pH for Ni(II) removal was 5.0–6.0 and an increase of sorbent dosage from 0.5 to 2.0 led to an increase in Ni(II) removal from 17% to 27%. At two times effluent dilution, maximum Ni(II) removal of 26% was attained at pH 6.0 and sorbent dosage of 1.0 g. A 12-fold effluent dilution resulted in the removal of 72% of Ni(II) at the same pH and sorbent dosage values. The obtained hybrid biosorbent can be used for Ni(II) removal from industrial effluents with low Ni(II) concentrations.

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