Removal of multiple metals using Tamarindus indica as biosorbent through optimization of process variables: a statistical approach

Bangaraiah, P.; Babu, B. Sarath; Peele, K. Abraham; Reddy, E. Rajeswara; Venkateswarulu, T.C.

doi:10.1007/s13762-019-02490-5

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…The optimal dose of the biosorbent for Pb(II) ion adsorption was found to be 1.5 g and for Zn(II) ion adsorption to be 0.6 g, based on the results of the experiments. These results are similar to those of removal of these heavy metals using Tamarindus indica as the biosorbent . The increase in the dosage of the biosorbent increases the removal efficiency, which may be ascribed to the more active sites of adsorption and biosorbent functional groups that may bind to these heavy metals .…”

Section: Results and Discussionsupporting

confidence: 80%

“…Hence, K d is calculated by converting the units of K L , L/mg should be multiplied by 1000 to convert the units in L/g, then multiplied by the molecular weight of the adsorbate, and then by 55.5 to transform K in L/mol to use K L in the thermodynamic calculations. Therefore, eq can be changed as follows − , − where the factor 55.5 is the number of moles of pure water per liter and MW is the molecular weight of the adsorbate.…”

Section: Results and Discussionmentioning

confidence: 99%

“…These results are similar to those of removal of these heavy metals using Tamarindus indica as the biosorbent. 68 The increase in the dosage of the biosorbent increases the removal efficiency, which may be ascribed to the more active sites of adsorption and biosorbent functional groups that may bind to these heavy metals. 69 At high biosorbent dosage, equilibrium is attained, and the saturation of active sites results in a low adsorption rate.…”

Section: Effect Of Parameters On Adsorptionmentioning

confidence: 99%

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Central Composite Design for Adsorption of Pb(II) and Zn(II) Metals on PKM-2 Moringa oleifera Leaves

Jayan

Akbar

2021

ACS Omega

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Biosorption is a very effective technique to eliminate the heavy metals present in the wastewater that utilize nongrowing biomass. The adsorption ability of the Periyakulam-2 (PKM-2) variety of Moringa Oleifera leaves (MOLs) to eliminate Pb(II) and Zn(II) ions from an aqueous solution was examined in this work. Fourier transform infrared (FTIR) spectroscopy, field-emission scanning electron microscopy, energy-dispersive X-ray (EDX) analysis, X-ray powder diffraction, and Brunauer–Emmett–Teller methods were used to characterize the PKM-2 variety of MOLs. The set of variables consists of the metal ion initial concentration, a dosage of the adsorbent, and pH were optimized with the help of the response surface methodology to get maximum metal removal efficiency of lead and zinc metals using the PKM-2 MOL biosorbent. A maximum Pb(II) removal of 95.6% was obtained under the condition of initial concentration of metal ions 38 mg/L, a dosage of the adsorbent 1.5 g, and pH 4.7, and a maximum zinc removal of 89.35% was obtained under the condition of initial concentration of metal ions 70 mg/L, a dosage of the adsorbent 0.6 g, and pH 3.2. The presence of lead and zinc ions on the biosorbent surface and the functional groups involved in the adsorption process were revealed using EDX and FTIR analysis, respectively. The adsorption data were evaluated by employing different isotherm and kinetic models. Among the isotherm models, Langmuir’s isotherm showed that the best fit and maximum adsorption capacities are 51.71 and 38.50 mg/g for lead and zinc, respectively. Kinetic studies showed accordance with the pseudo-second-order model to lead and zinc metal adsorption. Thermodynamic parameters confirmed (ΔG° < 0, ΔH° < 0, and ΔS° > 0) that the sorption mechanism is physisorption, exothermic, spontaneous, and favorable for adsorption. The results from this study show that the MOL of the PKM-2 type is a promising alternative for an ecofriendly, low-cost biosorbent that can effectively remove lead and zinc metals from aqueous solutions.

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Section: Results and Discussionsupporting

confidence: 80%

Section: Results and Discussionmentioning

confidence: 99%

Section: Effect Of Parameters On Adsorptionmentioning

confidence: 99%

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Central Composite Design for Adsorption of Pb(II) and Zn(II) Metals on PKM-2 Moringa oleifera Leaves

Jayan

Akbar

2021

ACS Omega

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“…Multivariate models can offer a solution for the optimization of SBB as it can simultaneously evaluate many factors with the effective monitoring of the interaction between process parameters. The experimental design can be formulated for the prediction of maximum removal/bioremediation efficiency using simulation techniques [ 26 , 27 ]. Response surface methodology (RSM), especially central composite design CCD, can be applied to multifactorial processes such as SBB to attain optimum conditions for adsorption of arsenic.…”

Section: Introductionmentioning

confidence: 99%

Application of BCXZM Composite for Arsenic Removal: EPS Production, Biotransformation and Immobilization of Bacillus XZM on Corn Cobs Biochar

Irshad

Xie

Mao

et al. 2023

Biology

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This study determined the effect of Bacillus XZM extracellular polymeric substances (EPS) production on the arsenic adsorption capacity of the Biochar-Bacillus XZM (BCXZM) composite. The Bacillus XZM was immobilized on corn cobs multifunction biochar to generate the BCXZM composite. The arsenic adsorption capacity of BCXZM composite was optimized at different pHs and As(V) concentrations using a central composite design (CCD)22 and maximum adsorption capacity (42.3 mg/g) was attained at pH 6.9 and 48.9 mg/L As(V) dose. The BCXZM composite showed a higher arsenic adsorption than biochar alone, which was further confirmed through scanning electron microscopy (SEM) micrographs, EXD graph and elemental overlay as well. The bacterial EPS production was sensitive to the pH, which caused a major shift in the –NH, –OH, –CH, –C=O, –C–N, –SH, –COO and aromatic/-NO2 peaks of FTIR spectra. Regarding the techno economic analysis, it was revealed that USD 6.24 are required to prepare the BCXZM composite to treat 1000 gallons of drinking water (with 50 µg/L of arsenic). Our findings provide insights (such as adsorbent dose, optimum operating temperature and reaction time, and pollution load) for the potential application of the BCXZM composite as bedding material in fixed-bed bioreactors for the bioremediation of arsenic-contaminated water in future.

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Efficient Removal of Pb^2+, Cu²⁺ and Zn²⁺ by Waste Tea‐Derived Cost‐Effective Bioadsorbent

et al. 2023

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This study examined the potential of waste tea as an adsorbent for the removal of Pb2+, Cu2+, and Zn2+ ions from contaminated water. The study analyzed the effect of various factors, including adsorbent dose (1–6 g), NaOH concentration (0.5–1.5 %), pH (3–8), shaking time (1–4 h), shaking speed (220 rpm and 320 rpm), temperature (25–50 °C), and particle size (300–710 μm), on the adsorption of ions on waste tea. The experiment‘s findings revealed that the removal of Pb+2 with a waste tea‐derived adsorbent was more significant than that of Cu2+, and Zn2+. Instrumental techniques such as FTIR, SEM, XRD, TGA, and ICPMS were used to characterize the adsorbent. Additionally, Langmuir, Freundlich, and Temkin isotherm models were employed to explain the equilibrium isotherm data of Pb2+, Cu2+, and Zn2+ ions. Furthermore, the adsorption kinetics data for these heavy metal ions were found to fit a pseudo‐second‐order model. The study found waste tea to be a low‐cost, eco‐friendly, and easily obtainable natural adsorbent for eliminating heavy metal ions from aqueous solutions. Additionally, the study showed that waste tea was effective in removing 98.43 % of Pb2+, 73.22 % of Cu2+, and 88.37 % of Zn2+ ions from aqueous solutions.

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Removal of multiple metals using Tamarindus indica as biosorbent through optimization of process variables: a statistical approach

Cited by 10 publications

References 24 publications

Central Composite Design for Adsorption of Pb(II) and Zn(II) Metals on PKM-2 Moringa oleifera Leaves

Central Composite Design for Adsorption of Pb(II) and Zn(II) Metals on PKM-2 Moringa oleifera Leaves

Application of BCXZM Composite for Arsenic Removal: EPS Production, Biotransformation and Immobilization of Bacillus XZM on Corn Cobs Biochar

Efficient Removal of Pb^2+, Cu²⁺ and Zn²⁺ by Waste Tea‐Derived Cost‐Effective Bioadsorbent

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Removal of multiple metals using Tamarindus indica as biosorbent through optimization of process variables: a statistical approach

Cited by 10 publications

References 24 publications

Central Composite Design for Adsorption of Pb(II) and Zn(II) Metals on PKM-2 Moringa oleifera Leaves

Central Composite Design for Adsorption of Pb(II) and Zn(II) Metals on PKM-2 Moringa oleifera Leaves

Application of BCXZM Composite for Arsenic Removal: EPS Production, Biotransformation and Immobilization of Bacillus XZM on Corn Cobs Biochar

Efficient Removal of Pb2+, Cu2+ and Zn2+ by Waste Tea‐Derived Cost‐Effective Bioadsorbent

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Product

Resources

About

Efficient Removal of Pb^2+, Cu²⁺ and Zn²⁺ by Waste Tea‐Derived Cost‐Effective Bioadsorbent