Comparative study on the biosorption of aluminum by free and immobilized cells of Bacillus safensis KTSMBNL 26 isolated from explosive contaminated soil

Dhanarani, Sridevi; Viswanathan, Elavarasi; Piruthiviraj, Prakash; Pugazhendhi, Arivalagan; Kaliannan, Thamaraiselvi

doi:10.1016/j.jtice.2016.09.032

Cited by 81 publications

(26 citation statements)

References 32 publications

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“…There is also the risk of leaching of heavy metals, and this may contaminate underground water and in turn affect human health, especially those that consume underground water through boreholes and well water [1]. The increase in industrialization and urbanization offers ascend to heavy metal pollution of the environment, which might have resulted from the discharge of effluents containing metals such as lead, cadmium, chromium, nickel and mercury [6,7,15].…”

Section: Introductionmentioning

confidence: 99%

“…Such methods include thermal, chelating, precipitation, adsorption, ion exchange, membrane technologies and biosorption strategies. Biosorption has several advantages over other conventional methods of heavy metal remediation because of its accessibility and efficiency [15]. One important economic aspect of biosorption technology is that the biomass used for decontamination of heavy metal pollutants is natural, easily available and affordable, and also it provides a better performance compared to conventional methods of decontamination [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…Karthik et al [20] and Karthik et al [21] reported the biosorption and bioaccumulation of high chromium by Cellulosimicrobium funkei AR8 and AR6, respectively, under batch conditions. Dhanarani et al [15] reported the biosorption of aluminum by Bacillus safensis. Live and dead biomass of Aspergillus niger have been used to biosorb fluoride in aqueous solution under batch and continuous condition [22].…”

Section: Introductionmentioning

confidence: 99%

“…Although biosorption is influenced by many factors such as pH, temperature and contact time [6,25], the use of microorganisms as biosorbent materials offers a selective removal of heavy metals under varied physicochemical properties, adsorption and desorption and another advantage of microorganisms is their high surface-to-volume ratio [7,17]. Several microorganisms have been used for biosorption, examples include Bacillus cereus used in Cd [26] and Cu [6] removal, Cellulosimicrobium funkei AR6 and Cellulosimicrobium funkei AR8 used in biosorption of Cr [20,21], Bacillus safensis used to biosorb aluminum [15], Aspergillus niger used for fluoride biosorption [22], and Pugazhendhi et al [6] reported lead biosorption using Ralstonia solanacearum. Therefore, this study is aimed at determining the biosorption rate of cadmium, nickel, chromium and copper by fungi and bacteria isolated from soil.…”

Section: Introductionmentioning

confidence: 99%

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Biosorption of heavy metal polluted soil using bacteria and fungi isolated from soil

et al. 2019

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Heavy metals polluted soils have turned out to be a common environmental problem across the globe due to their toxic effects and accumulation through the food chain. Heavy metals have lethal effects on all forms of life. For instance, plants grown on heavy metal polluted soil show a reduction in growth and yields. A surge in anthropogenic activities and industrial operations has substantially increased the level of heavy metal pollution and release into the environment; hence, there is need to remediate these heavy metal pollutants. Biosorption is an efficient, economical, ecofriendly and convenient techniques of remediating heavy metal polluted soils. It is a widely accepted method that utilizes biomaterials such as natural biomass as biosorbents. The current study was based on the biosorption of copper, chromium, cadmium and nickel polluted soil using bacteria and fungi isolated from soil. Bacterial species isolated were Pseudomonas, Bacillus, Micrococcus, Escherichia, Streptococcus, Enterobacter and Staphylococcus while fungi isolated were Aspergillus niger, Penicillium notatum and Aspergillus flavus. The isolated bacteria were screened for potential to biosorb copper and chromium likewise fungi for cadmium and nickel. Biosorption rate was determined using atomic absorption spectrophotometry. Five milliliters each of a-day-old culture of the screened bacteria and fungi was inoculated into 45 ml of nutrient broth (bacteria) and potato dextrose broth (fungi) having concentrations of 5, 10, 15 and 20 ppm, respectively, of copper, chromium, cadmium and nickel. The conical flasks were incubated at a temperature of 37 °C and 28 °C ± 2 for bacteria and fungi, respectively, for a period of 35 days of inoculation. For the bacterial isolates, the highest biosorption rates of chromium (89.67%) and copper (90.89%) by Pseudomonas aeruginosa were observed at 20 ppm on day 21 and 15 ppm on day 14, respectively, while for the fungi isolates, P. notatum showed highest biosorption rate for cadmium at 10 ppm with 77.67%. Aspergillus niger showed highest biosorption rate for nickel with 81.07% after 28 days of incubation. The results of this study revealed the ability of Pseudomonas aeruginosa to biosorb copper and chromium and also A. niger and P. notatum to biosorb cadmium and nickel from the environment and can be developed for the biosorption of soils polluted with copper, chromium, cadmium and nickel.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biosorption of heavy metal polluted soil using bacteria and fungi isolated from soil

et al. 2019

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“…In a batch system, the optimum pH, temperature, and contact time on biosorption of Al and cell growth were found to be 6.0, 358C, and 24 h, respectively, with initial metal concentration of 100 mg/L Al. In immobilization studies, sodium alginate was used as a supporting material for cell entrapment under optimized conditions [10].…”

Section: Introductionmentioning

confidence: 99%

Advantages and Limitations of In Situ Methods of Bioremediation

Sharma¹

2019

Recent Advances in Biology and Medicine

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There are two major types of in situ bioremediation: intrinsic and enhanced. Both rely on natural processes to degrade contaminants with (enhanced) or without (intrinsic) amendments. In recent years, in situ bioremediation concepts have been applied in treating contaminated soil and groundwater. Removal rates and extent vary based on the contaminant of concern and site-specific characteristics. There are a number of factor/variables that affect the rate of removal such as contaminant and co-contaminant distribution as well as concentration; indigenous microbial populations and reaction kinetics; and parameters such as pH, moisture content, nutrient supply, and temperature. Many of these factors are a function of the site and the indigenous microbial community and, thus, are difficult to manipulate. Specific technologies may have the capacity to manipulate some variables and may be affected by other variables as well; these specific issues are discussed with each technology in the following sections.

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