uranium thorium biosorption

Adsorption of Uranium from Acidic Solution by Microbes

Adsorption of Uranium from Acidic Solution by Microbes and Effect of Thorium on Uranium Adsorption by Streptomyces levoris TAKEHIKO TSURUTA1 Department of Applied Chemistry, Faculty of Engineering, Tohwa University, 1-1-1 Chikushigaoka, Fukuoka 815-8510, Japan 1 Received 11 September 2003/Accepted 9 January 2004

Biosorption of Uranium and Rare Earth Elements Using

In order to investigate the behavior of rare earth elements (REEs) and uranium (U) in marine organism, the concentrations of REEs and U in some brown algae samples taken on the coast of Niigata Prefecture were determined. In addition, laboratory model experiment to uptake these elements using living and dried algae (Undaria pinnatifida and Sargassum hemiphyllum) was also carried out to survey

Radionuclide Biosorption by Bacterial Biomass

biosorption was selected for further study on biosorption of uranium (VI) and thorium (IV). Effect of growth medium, culture age, energy source and metabolic inhibitor on uranium biosorption Metal and radionuclide biosorption by microbes is strongly influenced by the nature, availability and arrangements of various cellular binding ligands

Biosorption of uranium(VI) by a mangrove endophytic fungus

The uranium(VI) accumulation was studied in detail by using the biomass of mangrove endophytic fungus Fusarium sp.#ZZF51 from the South China Sea. The uranium(VI) biosorption process onto the tested fungus powders was optimized at pH 4.0, adsorption time 60 min, and uranium(VI) initial

Biosorption of thorium from aqueous solution by Ca

3. Biosorption Experiments All thorium solutions were prepared by diluting stock of 1,000 mg/L thorium obtained from dissolving thorium nitrate pentahy-drate (Th(NO3)4 ·5H2 O, Merck supplied) in distilled water. Uranium (VI), nickel (II) and copper (II) solutions were also prepared by dis-solving their nitrate salts (Merck) in distilled water.

Thorium Nuclear ReactorsSomatic Research

Sep 26, 2019 · Some research has been carried out to determine how well these elements adsorb to fungal hyphae and into cells. This process is referred to as "biosorption". For microorganisms, the atomic similarities between thorium, calcium, and zinc suggest that thorium can be used to substitute for these other common ions in enzymes.

Biosorption of uranium by melanin Kinetic, equilibrium

Dec 01, 2013 · Read "Biosorption of uranium by melanin Kinetic, equilibrium and thermodynamic studies, Bioresource Technology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Uranium Health & Environmental Research Online (HERO

An analysis of selected isotopes in the Uranium, Actinium, and Thorium Radioactive Decay Series revealed the presence of thorium (Th) in 31% of these tubewells. This discovery of Th, which does not have a WHO health-based drinking water guideline, is a potential public health challenge.

Removal of thorium and zirconium from aqueous streams by

Removal of thorium and zirconium from aqueous streams by biosorption Author(s) Varala, S Year 2017 Abstract Thorium and zirconium are the most stable radionuclides used in various nuclear operations, and the separation of these from aqueous industrial streams is essential.

(PDF) Biosorption of Uranium and Thorium. Ph.D. thesis

The study of biosorption of uranium and thorium is the sub- Determined uranium and thorium biosorption isotherms were independent of the initial U or Th solution concentration. Solution pH

Biosorption of uranium and thorium by Marine micro algae

BIOSORPTION OF URANIUM AND THORIUM BY MARINE MICRO ALGAE 123 then washed three times sterile distilled water and re-suspended in 10 ml water. A different volume of each cell suspension was added per ml of uranium or thorium solution, different algae cell concentrations ranging from 0.2–3 mg dry mass per ml were added

Thorium Nuclear ReactorsSomatic Research

Sep 26, 2019 · Some research has been carried out to determine how well these elements adsorb to fungal hyphae and into cells. This process is referred to as "biosorption". For microorganisms, the atomic similarities between thorium, calcium, and zinc suggest that thorium can be used to substitute for these other common ions in enzymes.

WM2015 Conference, March 1519, 2015, Phoenix, Arizona

i.e. thorium is accumulated on the adsorbent. The biosorption equilibrium was established in 120 minutes, when the biosorption capacity reached 11.48 ± 0.08 mg/g. In fifteen minutes of contact, the system achieves 73.7% of the total uptake, showing that the biosorption

Uranium Sorption by Pseudomonas Biomass Immobilized in

A Pseudomonas strain identified as a potent biosorbent of uranium (U) and thorium was immobilized in radiation-induced polyacrylamide matrix for its application in radionuclide containing wastewater treatment. The immobilized biomass exhibited a high U sorption of 202 mg g −1 dry wt. with its optimum at pH 5.0. A good fit of experimental data to the Freundlich model suggested multilayered

Bioremediation of radioactive wasteWikipedia

Bioremediation of radioactive waste or bioremediation of radionuclides is an application of bioremediation based on the use of biological agents bacteria, plants and fungi (natural or genetically modified) to catalyze chemical reactions that allow the decontamination of sites affected by radionuclides.

Microbial Leaching of Uranium OreInTechOpen

Microbial Leaching of Uranium Ore Hadi Hamidian Islamic Azad University, Qaemshahr Branch Iran 1. Introduction This chapter is a review of the microbiological leaching of uranium ores. Microbiological leaching has been use as an alternative approach to conventional hydrometallurgical methods of uranium's extraction.

BIOSORPTION OF URANIUM ON SARGASSUM BIOMASS

radium, thorium and uranium has been known for long time (Edgington et al., 1970), the biosorption of uranium by non-living marine algae has rarely been reported. Marine algae proliferate ubiquitously and abundantly in the litoral zones of world oceans, they are rather stable and fast growing. The bio-sorption capacity of the non-living marine

Biosorption of thorium and uranium by marine algal

The biosorption of uranium indicated that both kinetic models fitted the experimental data, under both experimental conditions. Equilibrium study showed an increasing thorium biosorption, for increasing initial metal concentration, reaching 96 and 54% recovery of the metal, at pH 1.0 and 4.0, respectively.

Modeling Uranium-Proton Ion Exchange in Biosorption

also demonstrated a good uranium adsorption performance (11, 12). The capability of marine algae to biologically concentrate radionuclides such as radium, thorium, and uranium has been known for a long time (13). Recently, uranium biosorption on a brown alga Sargassum fluitans was investigated (14). The biomass demonstrated to possess

Microbial Leaching of Uranium OreInTechOpen

Microbial Leaching of Uranium Ore Hadi Hamidian Islamic Azad University, Qaemshahr Branch Iran 1. Introduction This chapter is a review of the microbiological leaching of uranium ores. Microbiological leaching has been use as an alternative approach to conventional hydrometallurgical methods of uranium's extraction.

Selective biosorption of thorium (IV) from aqueous

Introduction. Thorium (Th) is a representative actinide metal element that is usually found alongside lanthanides and other transition metals in rocks and soil [1–5].For instance, the mineral monazite, the main mineral source of Th 4, is also associated with lanthanum, cerium, samarium, yttrium, and other elements [6, 7].Recently, the scientific importance and commercial value of Th has

Nuclear Waste BioremediationRobert B. Laughlin

Mar 11, 2016 · In yet another study on uranium bioremediation, Kazy et al. describe the study of a Pseudomonas strain capable of intracellularly sequestering uranium and thorium ions (a phenomenon known as biosorption), radioactive species commonly found in waste generated by nuclear energy and nuclear weapon testing. [9] Through transmission electron

Nuclear Waste BioremediationRobert B. Laughlin

Mar 11, 2016 · In yet another study on uranium bioremediation, Kazy et al. describe the study of a Pseudomonas strain capable of intracellularly sequestering uranium and thorium ions (a phenomenon known as biosorption), radioactive species commonly found in waste generated by nuclear energy and nuclear weapon testing. [9] Through transmission electron

Selective biosorption of thorium (IV) from aqueous

Introduction. Thorium (Th) is a representative actinide metal element that is usually found alongside lanthanides and other transition metals in rocks and soil [1–5].For instance, the mineral monazite, the main mineral source of Th 4, is also associated with lanthanum, cerium, samarium, yttrium, and other elements [6, 7].Recently, the scientific importance and commercial value of Th has

Microbial transformations of uranium in wastes and

Biosorption and bioaccumula-tion of uranium has been observed in a wide range of microorganism (Sakaguchi, 1996 Strandberg et al 1981). It is still one of the intensely investigated areas of research because of the potential use of biomass to remove uranium from waste streams. Uranium forms complexes with the carboxylate, phosphate, amino, and

Competitive biosorption of thorium and uranium by

The thorium selectivity in the competitive adsorption is assumed to be caused by the faster adsorption and the slower desorption rates of thorium than those of uranium. Keywords Uranium Biosorption Thorium Corynebacterium Glutamicum Langmuir Adsorption Isotherm

Biosorption of uranium and thoriumTsezos1981

Biosorption isotherms have been used for the evaluation of biosorptive uptake capacity of the biomass which was also compared to an activated carbon and the ion exchange resin currently used in uranium production processes. Determined uranium and thorium biosorption isotherms were independent of the initial U or Th solution concentration.

Biosorbents for Metal IonsNTUA

The mechanism of thorium biosorption by the same organism is different (Tsezos and Volesky, 1982a). Thorium is retained primarily by adsorption on the external surface of the mycellial cell wall. Chitin involvement in thorium biosorption is of substantially reduced significance as compared to its role during uranium biosorption.

Biosorption characteristics of uranium(VI) and thorium(IV

May 15, 2015 · Biosorption characteristics of uranium(VI) and thorium(IV) ions from aqueous solution using CaCl 2-modified Giant Kelp biomass

Thoriuman overview ScienceDirect Topics

Thorium. Thorium is a very well-recognized fertile material in the thorium–uranium fuel cycle in which 232Th absorbs thermal neutrons in a nuclear reactor to become 233Th, which then transmutes by two stages of negative β decay through 233Pa to 233U.

Biosorption of uranium from aqueous solutions by nonliving

Apr 15, 2006 · Biosorption of heavy metals can be an effective process for the removal and recovery of heavy metal ions from aqueous solutions. In this paper uranium biosorption by protonated, Ca-pretreated and non-pretreated Cystoseira indica algae biomass was investigated in a batch system.The results of the kinetic studies showed that the sorption of uranium on protonated and non-pretreated

Biosorption of Uranium and Rare Earth Elements Using

Bioinorganic Chemistry and Applications is a peer-reviewed, Open Access journal that publishes original research in the form of articles, notes, letters and reviews in the general field of bioinorganic chemistry and its applications. Biosorption of Uranium and Rare Earth Elements Using Biomass of Algae. Nobuo Sakamoto, 1 Thorium (Th

Adsorption of thorium(IV) ions from aqueous solution by

I. Shtangeeva, Uptake of uranium and thorium by native and cultivated plants, J. Environ. Radioact., 101 (2010) 458–463. J.D. Van Horn, H. Huang, Uranium(VI) bio-coordination chemistry from biochemical, solution and protein structural data, Coord. Biosorption of phenol using dried rice husk biomass kinetic and equilibrium studies, Der

Microscopic Investigations on the Biosorption of Heavy

Microscopic Investigations on the Biosorption of Heavy Metals by Bacterial Cells A Review Duraisamy Ramya and A. Joseph Thatheyus metabolism independent accumulation of uranium and thorium which may find a potential application in the removal and recovery of

Alginate-immobilized Aspergillus niger Characterization

A novel alginate-immobilized Aspergillus niger microsphere (AAM) biosorbent was prepared and used for Th(IV) removal. Biosorption experiments indicated that the AAMs with an abundance of surface functional groups exhibited rapid complexation with Th(IV) and a superior biosorption performance (303.95 mg·g −1) at pH 6.0 and 40 °C.Multiple methods of characterizing the biosorbent revealed the

Biosorption of uranium and thorium, Biotechnology and

Biosorption of uranium and thorium Biosorption of uranium and thorium Tsezos, Marios Volesky, Bohumil 1981-03-01 00 00 00 10.1002/bit.260230309.abs Selected samples of waste microbial biomass originating from various industrial fermentation processes and biological treatment plants have been screened for biosorbent properties in conjunction with uranium and thorium in aqueous solutions.

Accumulation of Thorium and Uranium by Microbesthe

In these high performance thorium- and uranium-accumulating microorganisms, S. levoris, which accu-mulated the largest amount of uranium from the solution containing only uranium at pH 3.5, accumulated about 300 µmol thorium and 133 µmol uranium per gram dry weight of microbial cells from a solution containing both thorium and uranium at pH 3.5.

Uranium (VI) Biosorption on Marine Sponge, Sarcotragus

The biosorption of heavy metals, radionuclides, uranium and thorium for the recovery or removal from aqueous systems using various micro-organisms and biological substances has been investigated by several groups of workers.