Column biosorption of lanthanum and europium by Sargassum

Diniz, Vivian; Weber, M.; Volesky, B.; Naja, Ghinwa

doi:10.1016/j.watres.2007.07.027

Cited by 44 publications

(21 citation statements)

References 33 publications

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“…Some metal ions, especially those for which biosorbent has low affinity, may pass through the column without providing any breakthrough curve. Diniz et al [34] have studied the performance of a column filled with protonated Sargassum polycystum biomass for the removal of La(III) and Eu(III) in binary and ternary system. They reported a very slight decrease in breakthrough time for the removal of La(III) and Eu(III) in ternary system (La-Eu-proton system) as compared to binary system (La-proton or Eu-proton system).…”

Section: Type Of Metal Ionmentioning

confidence: 99%

Metal sorption by algal biomass: From batch to continuous system

2016

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Section: Type Of Metal Ionmentioning

confidence: 99%

Metal sorption by algal biomass: From batch to continuous system

2016

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“…For a single system, the affinity constant ( K M, L ) represents, in this case, the relative selectivity of the metal to the light ions and it is defined by (Diniz et al 2008):where the subscripts M and L are referring to the heavy metal and light metal in the solution.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Competitive biosorption of lead, cadmium, copper, and arsenic ions using algae

Sulaymon

Mohammed

Al-Musawi

2012

Environ Sci Pollut Res

203

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The present study aims to evaluate the competitive biosorption of lead, cadmium, copper, and arsenic ions by using native algae. A series of experiments were carried out in a batch reactor to obtain equilibrium data for adsorption of single, binary, ternary, and quaternary metal solutions. The biosorption of these metals is based on ion exchange mechanism accompanied by the release of light metals such as calcium, magnesium, and sodium. Experimental parameters such as pH, initial metal concentrations, and temperature were studied. The optimum pH found for removal were 5 for Cd2+ and As3+ and 3 and 4 for Pb2+ and Cu2+, respectively. Fourier transformation infrared spectroscopy analysis was used to find the effects of functional groups of algae in biosorption process. The results showed that Pb2+ made a greater change in the functional groups of algal biomass due to high affinity to this metal. An ion exchange model was found suitable for describing the biosorption process. The affinity constants sequence calculated for single system was KPb > KCu > KCd > KAs; these values reduced in binary, ternary, and quaternary systems. In addition, the experimental data showed that the biosorption of the four metals fitted well the pseudo-second-order kinetics model.

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“…Adsorption is an efficient method for the removal of trace components from water. Over the last few years a number of investigations have been conducted to test the various adsorbents, such as activated carbon (11), agricultural waste (12,13), zeolite (14,15), clay (16), nonliving alga (17,18), for the removal of heavy metal ions. Throughout the world, there have been increasing interests in the utilization of waste materials as low-cost adsorbents rather than disposal in a landfill.…”

Section: Adsorption Of Lead and Cadmium On Ca-deficient Hydroxyapatitementioning

confidence: 99%

Adsorption of Lead and Cadmium on Ca-Deficient Hydroxyapatite

Zhu

Zhang

et al. 2010

Separation Science and Technology

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A Ca-deficient hydroxyapatite(d-HAp) has been used to remove lead and cadmium from their mixed ions solution. The effect of pH, coexistent calcium and magnesium ions, and humic acid on the adsorption efficiency were investigated. The results showed that this d-HAp adsorbed both Cd 2þ and Pb 2þ efficiently within a wide pH range. The existence of humic acid reduced the removal efficiency of Cd 2þ and Pb 2þ . The addition of Ca 2þ and Mg 2þ with a concentration of 500 mg/L only slightly reduced the removal efficiency. The adsorption kinetics was described by pseudo-second-order reaction model and the adsorption isotherm followed the Langmuir model.

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Column biosorption of lanthanum and europium by Sargassum

Cited by 44 publications

References 33 publications

Metal sorption by algal biomass: From batch to continuous system

Metal sorption by algal biomass: From batch to continuous system

Competitive biosorption of lead, cadmium, copper, and arsenic ions using algae

Adsorption of Lead and Cadmium on Ca-Deficient Hydroxyapatite

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