Biosorption of heavy metals by Sphaerotilus natans: an equilibrium study at different pH and biomass concentrations

Esposito, A.; Pagnanelli, Francesca; Lodi, Alessandra; Solisio, Carlo; Vegliò, Francesco

doi:10.1016/s0304-386x(00)00195-x

Cited by 283 publications

(128 citation statements)

References 22 publications

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“…Biosorption, developed in the 1990s, is a relatively new technology compared with traditional methods like precipitation, reduction and membrane processes, ion exchange, coagulation, and adsorption [6]. In recent years, the capacities for heavy metal removal of bio-materials such as marine macroalgae [18], microalgae [5], and other sources of biomass [16] have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Copper by Cyanobacterial Bloom-Derived Biomass Harvested from the Eutrophic Lake Dianchi in China

Wang

Liu

2010

Curr Microbiol

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Biomass of cyanobacterial bloom from Lake Dianchi was used as a biosorbent for copper removal from aqueous solution. The maximum capacity was found at conditions of pH 4, initial concentration of copper was 10 mg/l and initial dose of biomass was 1.0 g/l. HNO 3 demonstrated the highest desorption efficiency compared with HCl, EDTA, and citric acid. Physical adsorption was assumed not to be the dominant mechanism of biosorption as revealed by scanning electron microscopy and surface area measurement of the biomass. Infrared ray spectra analysis of the biomass suggested that ion-exchange is the principal mechanism for biosorption. Considering the advantages-low cost, easy to collect, and huge in quantity-the Microcystis bloom biomass could be used as a sorbent for copper and other heavy metals removal.

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Section: Introductionmentioning

confidence: 99%

Biosorption of Copper by Cyanobacterial Bloom-Derived Biomass Harvested from the Eutrophic Lake Dianchi in China

Wang

Liu

2010

Curr Microbiol

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“…98% and 0.5%. Studies 31,32 have reported that increase in fungal biomass dose generally increases the metal uptake rate due to increase in the number of binding sites. Hence increase in the biosorbent surface area, followed by slower metal deposition indicate a secondary metal-binding mechanism 33 .…”

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confidence: 99%

<i>In vitro</i> Compatibility of Fungi for the Biosorption of Zinc(II) and Copper(II) from Electroplating Effluent

et al. 2017

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The present study describes the potential of mixed fungal isolates, i.e. Aspergillus niger, Penicillium chrysogenum and Rhizopus oryzae for the removal of zinc(II) and copper(II) from aquatic environments. Capacity of mixed fungal biomass to adsorb Zn(II) and Cu(II) were studied in batch sorption experiments as bioremediators. Optimal conditions from contact time, pH, initial metal ion concentration and temperature for remediation of Zn(II) and Cu(II) were studied. Typically, the uptake of Zn(II) and Cu(II) rises with increasing pH up to 4.0. Optimal metal concentration was 150 mg/l when the maximum removal of copper and zinc was 69.5% and 30.3% respectively, was observed at initial metal concentration. Maximum uptake for metals was achieved after 15 min. The maximum biosorption for copper and zinc by selected fungi was achieved at 7.0 g of biosorbent. IR spectrum of three fungal species showed the presence of C=O groups, amine and amide N-H functional stretch.Keywords: Biosorption, copper, electroplating effluent, fungal isolates, zinc.WASTEWATER during electroplating activities involves poisonous heavy metals like chromium, mercury, zinc, nickel, cadmium, phosphorus and copper which build up in the food chain and cause different pathological states 1,2 . In recent years, association of different microbes has been used for wastewater treatment as bioremediators, as it was considered to have greater capability over pure and single isolates. The axenic cultures were devised to be mineralized rapidly and completely by the metabolic activity of different microorganisms 3 . The interactions between different heavy metals and microorganisms might be due to antagonistic, additive effects or synergic. These interactions might be multifaceted and distinguished which depends on the type of heavy metal ion and microbial species consortium. The collective effect of different heavy metals may be toxicity or growth stimulation in the same microbial consortium assorted from the additive effect of the single metal ions 4 . Fungi have diverse mechanisms for bioremediation of heavy metals, including metal uptake by cell-wall components, accumulation inside the cell or extracellular chelation by phytochelatins and metal lothioneins 5 . Waste samples were collected from a polluted water source near Al-Madina electroplating industry, Alipur Chattha, Pakistan, in sterilized and cleaned 1 l glass bottles with stopper. All samples were treated with 372 mg/l EDTA as the chelating agent to reduce toxicity in samples burdened with heavy metals. During examination, the samples were fresh, and were occurred immediately after return to the laboratory.The fungi were isolated by filtration of the electroplating waste for collection of fungal propagules using 0.45 m pore size filter paper 6 . The fungal spore suspension was prepared in 50 ml of saline solution, and 100 l of spore suspension was inoculated in sterilized petri dish with modified culture medium consisting of aureomycin (0.35 mg/l), glucose (10 g/l), rose bengal (0.035 mg/l), Cu...

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“…Bar, 2 substitutions per 100 n. previously [35] [36]. Thus, Karakagh et al [36] isolated three Cd-resistant strains from an agricultural soil in Iran, Bacillus sp., Actinomyces sp. and Streptomyces sp., whose MICs were fixed at 3.5, 4.0 and 4.0 mM, respectively.…”

Section: Mic Valuesmentioning

confidence: 99%

Effect of Heavy Metals on the Growth of Bacteria Isolated from Sewage Sludge Compost Tea

Vela-Cano¹,

Castellano‐Hinojosa²,

Vivas³

et al. 2014

AiM

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The amount of urban sewage sludge is increasing daily. For this reason, it is necessary to have an environmentally friendly use for this residue. Land applications in olive grove soil, poor quality soil, as a compost or a compost tea could be considered as one of the best options, because it has a high content of organic matter. However, the presence of heavy metals in some sewage sludge could be an environmental problem. In this sense, the aim of this work is to check the tolerance of the culturable microbiota present in sewage sludge compost tea to four heavy metals, Cu, Cd, Pb and Zn. Among microbiota isolated, eight strains showed high resistance to Pb, Zn, Cu and Cd, and one microbe (Rhodococcus sp.) showed a special tolerance to every heavy metal. The strains were divided into six genrera: Rhodococcus, Virgibacillus, Leifsoni, Achromobacter, Cupriavidus and Oceanobacillus sp. Finally, Rhodococcus sp. strain 3 was able to remove different amounts of heavy metals from the culture media with intracellular and surface accumulation of Cu, Zn, Pb and Cd. The application of this bacterial strain in bioremediation processes is discussed.

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Biosorption of heavy metals by Sphaerotilus natans: an equilibrium study at different pH and biomass concentrations

Cited by 283 publications

References 22 publications

Biosorption of Copper by Cyanobacterial Bloom-Derived Biomass Harvested from the Eutrophic Lake Dianchi in China

Biosorption of Copper by Cyanobacterial Bloom-Derived Biomass Harvested from the Eutrophic Lake Dianchi in China

<i>In vitro</i> Compatibility of Fungi for the Biosorption of Zinc(II) and Copper(II) from Electroplating Effluent

Effect of Heavy Metals on the Growth of Bacteria Isolated from Sewage Sludge Compost Tea

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