Minerals and mine drainage

Thomson, Bruce; Turney, William R.

doi:10.2175/106143095x135796

Cited by 6 publications

(4 citation statements)

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“…Marine and freshwater organisms are damaged by Cu, if it is present in excess. Zn(II) is a powerful Lewis acid, corrosive and also toxic to bacteria, plants and invertebrates . Ni(II) is a well‐known heavy metal pollutant and has been implicated as an embryotoxin and teratogen, and may cause toxic effects in the respiratory tract and immune system .…”

Section: Introductionmentioning

confidence: 99%

“…Zn(II) is a powerful Lewis acid, corrosive and also toxic to bacteria, plants and invertebrates. 3 Ni(II) is a well-known heavy metal pollutant and has been implicated as an embryotoxin and teratogen, 4 and may cause toxic effects in the respiratory tract and immune system. 5 Such heavy metal ions can enter water bodies mainly from waste water and effluents from metal coating, electroplating and alloy production industries.…”

Section: Introductionmentioning

confidence: 99%

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Metal complexation studies of amylopectin‐graft‐poly[(N,N‐dimethylacrylamide)‐co‐(acrylic acid)]: a biodegradable synthetic graft copolymer

Kolya

Tripathy

2015

Polymer International

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Synthesis of amylopectin‐graft‐poly[(N,N‐dimethylacrylamide)‐co‐(acrylic acid)] was carried out using solution polymerization technique with potassium persulfate as the initiator. The graft copolymer was characterized by measuring molecular weight using size exclusion chromatography, thermal analysis and Fourier transform infrared (FTIR) spectroscopy. The synthetic graft copolymer was used for the removal of some potentially toxic metal ions, Cu(II), Zn(II) and Ni(II), from their aqueous solutions. Various operating parameters like the amount of adsorbent, solution pH, contact time and temperature were studied. The adsorption data were well described by the pseudo‐second‐order and Langmuir isotherm models. Metal complexation studies were carried out experimentally using cyclic voltammetry and UV‐visible and FTIR spectroscopies. The metal complex structure was also studied theoretically using density functional theory with the Gaussian 09 program and the geometry of the complex structure was optimized. The metal complexation ability of the graft polymer was in the order Cu(II) > Ni(II) > Zn(II). Calculation of the various thermodynamic parameters was also done. The negative value of free energy change indicates the spontaneous nature of the adsorption. © 2015 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal complexation studies of amylopectin‐graft‐poly[(N,N‐dimethylacrylamide)‐co‐(acrylic acid)]: a biodegradable synthetic graft copolymer

Kolya

Tripathy

2015

Polymer International

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“…Hence removal and recovery of such ions from mine wastewaters, soils and waters has been important from the economic point of view and also for finding solutions to solve environmental problems [1,2]. Heavy metals and other metal ions exist as contaminants in aqueous waste streams of many industries.…”

Section: Introductionmentioning

confidence: 99%

Cadmium removal from aqueous solutions using biosorbent Syzygium cumini leaf powder: Kinetic and equilibrium studies

Rao

Anand

Venkateswarlu

2010

Korean J. Chem. Eng.

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Syzygium cumini L. leaf powder and Cd(II) loaded samples were characterized using FTIR and SEM techniques. The biosorption of cadmium ions from aqueous solution was studied in a batch adsorption system as a function of pH, contact time, adsorbate, adsorbent, anion and cation concentrations. The biosorption capacities and rates of transfer of cadmium ions onto S. cumini L. were evaluated. The kinetics could be best described by both linear and nonlinear pseudo-second order models. The isothermic data fitted to various models in the order Freundlich>Redlich-Peterson>Langmuir>Temkin. The maximum adsorption capacity of S. cumini L. leaves at room temperature was estimated to be 34.54 mg g −1 . The negative values of ∆G 0 indicated the feasibility of the adsorption process. The endothermic nature was confirmed by the positive value of the enthalpy change (∆H 0 =3.7 kJ mol −1 ). The positive value of entropy change (∆S 0 =16.87 J mol −1 K −1 ) depicted internal structural changes during the adsorption process.

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“…The removal of toxic metal ions and recovery of valuable ions from mine wastewaters, soils and waters have been important in economic and environmental problems [1][2][3][4]. Heavy metals and other metal ions exist as contaminants in aqueous waste streams of many industries, such as tanneries and mining.…”

Section: Introductionmentioning

confidence: 99%

Removal of lead from aqueous solution using Syzygium cumini L.: Equilibrium and kinetic studies

King

Rakesh

Beenalahari

et al. 2007

Journal of Hazardous Materials

120

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Minerals and mine drainage

Cited by 6 publications

References 0 publications

Metal complexation studies of amylopectin‐graft‐poly[(N,N‐dimethylacrylamide)‐co‐(acrylic acid)]: a biodegradable synthetic graft copolymer

Metal complexation studies of amylopectin‐graft‐poly[(N,N‐dimethylacrylamide)‐co‐(acrylic acid)]: a biodegradable synthetic graft copolymer

Cadmium removal from aqueous solutions using biosorbent Syzygium cumini leaf powder: Kinetic and equilibrium studies

Removal of lead from aqueous solution using Syzygium cumini L.: Equilibrium and kinetic studies

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