Effects of temperature on the sorption of Pb2+ and Cd2+ from aqueous solution by Caladium bicolor (Wild Cocoyam) biomass

Horsfall, Michael; Spiff, Ayebaemi I.

doi:10.2225/vol8-issue2-fulltext-4

Cited by 340 publications

(183 citation statements)

References 13 publications

(14 reference statements)

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“…According to the adsorption theory, adsorption decreases with increase in temperature and molecules adsorbed earlier tend to desorb from the surface at elevated temperature [17]. This was found to be true in the present study.…”

Section: E Effect Of Temperaturesupporting

confidence: 85%

Biosorption Studies of Copper, Chromium, Lead and Zinc Using Fins of Catla Catla Fish

Gupta¹

2017

IJRASET

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The discharge of heavy metals from industrial effluents into the environment is a major concern today due to its toxicity and persistence in the environment. The present work deals with the removal of heavy metals i.e. Copper, Chromium, Lead and Zinc ions from aqueous solutions using fins of Catla catla fish. The effect of varying conditions in aqueous solution like pH, contact time, temperature, initial metal concentration, turbidity and biosorbent dosage on the biosorption processes was studied. Further, the biosorbent was used to remove heavy metals from different industrial effluents. The percentage removal of heavy metal ions from the industrial effluents using fins of Catla catla fish as a biosorbent were found in the following range: Copper ions (32.95 -99.34 %), Chromium ions (26.64 -100 %), Lead ions (19.85 -56.06 %) and Zinc ions (30.01 -99.24 %). The heavy metal concentration in aqueous solutions was estimated using ICP-AES and the structural characteristics of the biosorbent was determined by using Fourier Transform Infrared Spectroscope (FT-IR) analysis. The adsorption isotherm studies were carried out using Freundlich and Langmuir isotherm models. It was observed that fins of Catla catla which is thrown from fish market as wastes, have the capacity to remove heavy metals from aqueous solution and hence it can be used to remove heavy metals from industrial effluents.

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Section: E Effect Of Temperaturesupporting

confidence: 85%

Biosorption Studies of Copper, Chromium, Lead and Zinc Using Fins of Catla Catla Fish

Gupta¹

2017

IJRASET

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“…(Table 5) indicate the spontaneous nature of adsorption of metal ion by the biomass and the likelihood of increased spontaneity of the process induced by increased temperature. It is of note that ∆G o up to -20 kJ/mol are consistent with electrostatic interaction between sorption sites and the metal ion (physical adsorption) while ∆G o values more negative than -40 kJ/mol involve charge sharing or transfer from the biomass surface to the metal ion to form a coordinate bond (chemical adsorption) 33 . The ∆G o values obtained in this study for both metal ions are < -20 kJ/mol, indicative that physical adsorption is the predominant mechanism in the sorption process.…”

Section: Thermodynamic Parametersmentioning

confidence: 73%

Biosorption of nickel (II) and zinc (II) from aqueous solutions by the biomass of yeast Yarrowia lipolytica

Wierzba

2017

Polish Journal of Chemical Technology

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This study examined the biosorption process of Ni(II) and Zn(II) from an aqueous solution by dead biomass of Yarrowia lipolytica. Optimum biosorption conditions were determined as a function of pH, biomass dosage, contact time, and temperature. The biosorbent was characterized by FTIR, which indicated the participation of hydroxyl, carboxyl, amide and amine groups in the process of binding the metal ions. The results showed that the biosorption processes of both metal ions closely followed pseudo-second order kinetics. The equilibrium data of Ni(II) and Zn(II) ions at 20, 30 and 40 o C fi tted the Langmuir and Freundlich isotherm models. Langmuir isotherm provided a better fi t to the equilibrium data, with a maximum biosorption capacity of the Y. lipolytica biomass for Ni(II) and Zn(II) of 30.12 and 44.44 mg/g respectively. The calculated thermodynamic parameters demonstrated that the biosorption of Ni(II) and Zn(II) ions onto the Y. lipolytica was feasible, spontaneous and endothermic.

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“…High temperatures tend to decrease the boundary layer thickness; the metal ions therefore had increased tendency to escape from the biomass surface to the solution phase. The decreased adsorption with increasing temperature also suggests weak adsorption interaction between biomass surface and the metal ion, which supports physiosorption [31]. Regression analysis showed that particle density and porosity of adsorbents are important parameters for good adsorption.…”

Section: Resultsmentioning

confidence: 60%

Sorption of Heavy Metal Ions (Cu2+ and Cd2+) From Simulated and Industrial Wastewaters Using Sugarcane Biomass

Opeolu

Fatoki

2017

Eco-Tech

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The widespread use of heavy metals in different manufacturing processes has resulted in their presence in the air, soil and aquatic ecosystems. Many manufacturing processes release their effluents into nearby streams and rivers due to non-availability of waste treatment technologies in the developing world. Industrialization has therefore been reported to be a major anthropogenic source of these elements and their compounds waterbodies. Conventional methods that are currently being used in the developed world (such as chemical precipitation, ultra-filtration, reverse osmosis, etc) are expensive and so, unaffordable to small-scale businesses prevalent in developing economies. The need for alternative, cheaper and available technologies therefore, cannot be over-emphasized. This study attempted to remove heavy metals (Cu 2+ and Cd 2+ ) from simulated and industrial (paint and textile) wastewaters using sugarcane biomass. A synthetic resin (Chelex) was used as control. Batch sorption experiments were conducted to assess the influence of contact time, adsorbent dose, adsorbate concentration, pH, agitation speed, temperature and particle size. Increases in the parameters (except particle size) gave corresponding increases in percentage adsorption of both metals. Optimal temperature for adsorption was achieved at 50 o C above which adsorption declined considerably. Experimental data for Cu 2+ and Cd 2+ fitted well into freundlich and langmuir isotherms. In textile effluent, 100% adsorption was achieved for both metals using sugarcane biomass in contrast to 89% and 91% for Cu 2+ and Cd 2+ respectively in chelex, a synthetic resin. Similarly, adsorption was 100% for both metals using the biosorbent. Sugarcane biomass may therefore be utilized for water and wastewater remediation in the developing world. Its biodegradability gives comparative advantage over alternative synthetic and expensive resins since its disposal will be more environmentally friendly.

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Effects of temperature on the sorption of Pb2+ and Cd2+ from aqueous solution by Caladium bicolor (Wild Cocoyam) biomass

Cited by 340 publications

References 13 publications

Biosorption Studies of Copper, Chromium, Lead and Zinc Using Fins of Catla Catla Fish

Biosorption Studies of Copper, Chromium, Lead and Zinc Using Fins of Catla Catla Fish

Biosorption of nickel (II) and zinc (II) from aqueous solutions by the biomass of yeast Yarrowia lipolytica

Sorption of Heavy Metal Ions (Cu2+ and Cd2+) From Simulated and Industrial Wastewaters Using Sugarcane Biomass

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