Biosorbent from tomato waste and apple juice residue for lead removal

Heraldy, Eddy; Lestari, Witri Wahyu; Permatasari, Diah; Arimurti, Devita Dwi

doi:10.1016/j.jece.2017.12.026

Cited by 81 publications

(35 citation statements)

References 41 publications

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“…Results of isotherm parameters in table 4 show that the Freundlich equation gives the best fit for equilibrium data, which is confirmed by the high value of R 2 and minimum value of RMSE. This finding suggests the multilayer adsorption of orthophosphate ions onto heterogeneous surface of LDHs [34]. Figure 6.…”

Section: Equilibrium Studymentioning

confidence: 84%

Zn-Al layered double hydroxide: synthesis, characterization and application for orthophosphates ions adsorption in aqueous medium

Rouahna

Ouakouak

Srasra

2020

Mater. Res. Express

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This paper aims at studying the preparation of Zn-Al-LDH anionic clay and its adsorption proprieties in removing orthophosphate ions from aqueous medium. The LDH phase was synthesized by coprecipitation method and then calcined at 500°C. Structural and textural properties of the prepared LDHs were determined by using x-ray diffraction, FTIR, BET, SEM and pH PZC analysis. Batch adsorption experiments were carried out under different parameters such as stirring time, pH and initial orthophosphate concentration. Results show that the prepared LDHs are efficient in removing orthophosphate and the maximum uptake was observed after 2 h. Experimental kinetic data are well described by the pseudo-second order model. It was also found that the adsorption process is significantly affected by the pH value. The sorption mechanisms include ion exchange, reconstitution of LDH phase and/or electrostatic attraction. Also, the isotherm study reveals that the Freundlich equation best fit the equilibrium data.

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Section: Equilibrium Studymentioning

confidence: 84%

Zn-Al layered double hydroxide: synthesis, characterization and application for orthophosphates ions adsorption in aqueous medium

Rouahna

Ouakouak

Srasra

2020

Mater. Res. Express

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“…Activated carbon from walnut wood 58.82 [44] Solanum melongena leaf powder 71.42 [14] Brassica Compestris Stem (BCS) 78.50 [39] Sulphuric acid-treated palm tree leaves 88.61 [43] Activated carbons from dinde stones 92.90 [21] Activated carbon from palm oil mill effluent 94.34 [24] Citric acid modified rubber leaf powder 97.19 [22] Apple juice residue 108.0 [45] Monosodium glutamate modified rubber leaf powder 109.9 [22] Activated carbons from guava seeds 114.8 [21] Cucumber peel 133.6 [25] Spirodelapolyrhiza (L.) Schleiden biomass 137.0 [5] Eucalyptus camaldulensis -HNO 3 modified 138.8 [41] Tomato waste 152.0 [45] Chemically modified agricultural waste 166.7 [16] The dried aquatic plant, LemnaperpusillaTorr. 196.0 [46] Ash from rosacanina-l leaves 588.0 [4] Polymer-modified wheat straw carboxymethyl cellulose 822.1 [17] Nanoparticles loaded ash (nFe-A) using Rosa Canina-L leaves 833.0 [4] were in agreement with other studies, which also have shown that the Langmuir model provides a good fit for the adsorption of Pb(II) [3,4,13,17,18,25,39,42,43].…”

Section: This Studymentioning

confidence: 99%

A Thermodynamic and Kinetic Evaluation of the Adsorption of Pb(II) Ions Using Peanut (Arachis Hypogaea) Shell-Based Biochar from Aqueous Media

Taşar¹,

Özer²

2019

Pol. J. Environ. Stud.

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In this study, biochar from peanut shells was used to remove Pb(II) ions from aqueous media using a batch method. Adsorption studies were conducted to optimize the adsorption parameters, such as contact time, the initial pH of aqueous media, temperature, initial concentration of lead ions, and the dosage of biochar. The optimum adsorption conditions were found to be contact time: 180 min, initial pH of aqueous media: 5.5 0.02, temperature: 293 K, initial concentration of lead ions: 100 ppm, and the dosage of biochar: 2 g/L. The adsorption yield of Pb(II) ions on the biochar was found to be 89% under these conditions. The experimental results were evaluated by applying the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich (D-R) isotherm models. We found that the Langmuir isotherm describe the adsorption data very well. The theoretical maximum adsorption capacity (q c) was determined as 56.5 mg/g using the Langmuir isotherm. In the concept of the research, kinetic investigations also were conducted. Pseudo first-order, pseudo second-order, intraparticle diffusion, and Endovich kinetic models were used to calculate the kinetic parameters and determine the ideal mechanism of the adsorption process. It was found that the pseudo second-order model could be used to explain the experimental data. The adsorption was a controlled chemisorption mechanism. The thermodynamic parameters (ΔHº, ΔSº, and ΔGº) were calculated using basic thermodynamic equations, and they indicated that the adsorption process was spontaneous at all temperatures and that the process was exothermic. Consequently, it was concluded that the peanut shell-based biochar can be used as a suitable and economical adsorbent for the removal of Pb(II) ions from aqueous media.

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“…After the adsorption had finished, the solution was filtered and the filtrate was analysed by an atomic absorption spectrophotometer (AAS). The Pb 2+ adsorption efficiency was calculated by the equation (1) [20,30,31]:…”

Section: Batch Adsorption Experiments Designmentioning

confidence: 99%

“…In addition, the absorption capacity is higher, the process is simple, and the efficiency is relatively high and does not provide have side effects in the form of toxic substances [19]. Numerous adsorbents, for example, tourmaline, biosorbent, montmorillonite, activated carbon, zeolite, waste biomass, wheat straw, black phosphorous nanosheet, and Sulfur-doped Graphitic Carbon Nitride had been reported [20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

FABRICATION OF Mg-Zn-Al HYDROTALCITE AND ITS APPLICATION FOR Pb2+ REMOVAL

et al. 2019

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The fabrication of Mg-Zn-Al Hydrotalcite (HT) was carried out by the co-precipitation method at various molar ratios. The Mg-Zn-Al HT compound at the optimum molar ratio was then calcined to determine the effect of calcination on the Pb 2+ adsorption. The kinetics of the adsorption type was determined by applying pseudo first order and pseudo second order kinetics models. Meanwhile, to investigate the adsorption process, the Freundlich and Langmuir equations were applied to determine the adsorption isotherm. The results showed that the optimum Mg-Zn-Al HT was at a molar ratio of 3 : 1 : 1 with an adsorption efficiency of 73.16 %, while Mg-Zn-Al HT oxide increased the adsorption efficiency to 98.12 %. The optimum condition of Pb 2+ removal using Mg-Zn-Al HT oxide was reached at pH 5 and a contact time of 30 minutes. The adsorption kinetics follows the pseudo second order kinetics model with a rate constant of 0.544 g/mg·min. The isotherm adsorption follows the Langmuir isotherm model with a maximum capacity of 3.916 mg/g and adsorption energy of 28.756 kJ/mol.

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Biosorbent from tomato waste and apple juice residue for lead removal

Cited by 81 publications

References 41 publications

Zn-Al layered double hydroxide: synthesis, characterization and application for orthophosphates ions adsorption in aqueous medium

Zn-Al layered double hydroxide: synthesis, characterization and application for orthophosphates ions adsorption in aqueous medium

A Thermodynamic and Kinetic Evaluation of the Adsorption of Pb(II) Ions Using Peanut (Arachis Hypogaea) Shell-Based Biochar from Aqueous Media

FABRICATION OF Mg-Zn-Al HYDROTALCITE AND ITS APPLICATION FOR Pb2+ REMOVAL

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