Adsorption of lead, zinc and cadmium ions from contaminated water onto Peganum harmala seeds as biosorbent

Zamani, Abbasali; Shokri, Rouhollah; Yaftian, Mohammad Reza; Parizanganeh, Abdolhossein

doi:10.1007/s13762-012-0107-x

Cited by 58 publications

(29 citation statements)

References 26 publications

(24 reference statements)

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“…All the adsorbents mentioned in Table 2 were effective in the removal of Pb and As from wastewater. In the current Zamani et al (2013) study, soya waste adsorbent removed 80% of Pb and 40% of As from wastewater. The results are comparable with other mentioned adsorbent in Table 3.…”

Section: Resultsmentioning

confidence: 91%

Adsorptive removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies

et al. 2018

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In this study, adsorption potential of soya bean adsorbent for lead (Pb) and arsenic (As) has been assessed in order to consider its suitability for purification of wastewater containing heavy metals. The main focus of study was on Pb and As. Batch experiments were performed to study the adsorption of Pb and As on soya bean absorbent. The effect of various experimental parameters (adsorbent dose, contact time, temperature and pH) was studied, and optimal conditions were determined. The effect of adsorbent dose on the biosorption of Pb and As from aqueous solution was studied at 37 °C by varying the adsorbent amount from 1 g/100 ml to 4 g/100 ml. Highest amount of Pb and As was adsorbed at sorbent amount of 3 g/100 ml. The optimum pH for removal of As and Pb was found to be 2.0 and 4.0 ± 0.26. Maximum biosorption of Pb and As was achieved at 37 °C. The maximum percentage removal of Pb and As was attained at 60 min of shaking time. Langmuir and Freundlich isotherm models were utilized for equilibrium studies. It was found that biosorption by soya bean adsorbent was exothermic in nature. The thermal degradation analysis suggested that the degradation occurs in two steps and adsorbent is thermally stable.Keywords Biosorption · Soya bean adsorbent · Lead and arsenic · Sorption isotherm and thermal analysis of biosorbent

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Section: Resultsmentioning

confidence: 91%

Adsorptive removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies

et al. 2018

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“…Adsorption onto natural materials is currently considered as an emerging and attractive technology because of its effectiveness and economy in heavy metals removal from wastewaters. Different raw and modified organic natural materials have been tested for heavy metals removal from aqueous solutions such as raw alga Anabaena sphaerica biomass (Abdel-Aty et al 2013), raw Peganum harmala seeds (Zamani et al 2013), modified Symphoricarpus albus biomass (Akar et al 2012), modified olive tree pruning (Calero et al 2013) and activated carbon from apple pulp (Depci et al 2012). The main involved mechanisms were cation exchange and complexation with the active groups of the biomasses' constituents.…”

Section: Introductionmentioning

confidence: 99%

Study of continuous lead removal from aqueous solutions by marble wastes: efficiencies and mechanisms

Mlayah

Jellali

2014

Int. J. Environ. Sci. Technol.

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Lead removal from synthetic solutions and real wastewater by Bianco Gioia marble wastes as abundant, renewable and eco-friendly materials was studied under different experimental conditions in a continuous stirring tank reactor. These marble wastes were found to be very efficient in removing lead for several experimental situations. Indeed, for initial aqueous pH values higher than 3.6, a lead removal efficiency of about 100 % was achieved even for high aqueous concentrations (200 mg L -1 ), important feeding flow rates (60 mL min -1 ) and low marble waste dosage (2 g L -1 ). The best removal capacity (175.7 mg g -1 ) was obtained for an initial lead concentration of 200 mg L -1 , a marble waste dose of 5 g L -1 and an aqueous pH of 5. Even using the real wastewater with low aqueous pH (1.1), lead was also completely removed using 20 g L -1 of the tested marble wastes. According to the energy-dispersive spectroscopy and X-ray diffraction analyses, lead removal seems to be controlled by both precipitation as cerussite (PbCO 3 ) and hydrocerussite (Pb 3 (CO 3 ) 2 (OH) 2 ), and adsorption onto the surface particles through cation exchange and complexation. The proposed low-cost material efficiently removes lead present in synthetic solutions and real wastewaters and constitutes an interesting environmental management option.

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“…The pseudo-first-order kinetic model and its integral can be expressed by the following equation (Lagergren 1898;Aksu 2001;Ho and McKay 1999;Zamani et al 2013):…”

Section: Kinetic Modeling Of Fe 3? Sorptionmentioning

confidence: 99%

Adsorption of ferric ions onto natural feldspar: kinetic modeling and adsorption isotherm

Al-Anber

2013

Int. J. Environ. Sci. Technol.

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The removing of ferric ions (Fe 3? ) from aqueous solution using natural feldspar (NF) has been studied in a batch operation mode. The factors affecting of the sorption equilibrium, such as contact time, initial concentration of the ferric ions (Fe 3? ), feldspar dosage concentration and temperature, were investigated. The maximum removal is 93 % (approx.) using low-level concentration of Fe 3? ions (30 mg L -1 ) and high dosage concentration (40 g L -1 ). The adsorption equilibrium is achieved during the first 90 min. Freundlich model has successfully analyzed the equilibrium of isotherms with R 2 = 1. The adsorption mechanism of aqueous ferric ion on NF follows Freundlich isotherm models (R 2 = 0.997). The capacity (K f ) and intensity (1/n) of Freundlich adsorption are 1.70 and 0.621, respectively. The results reveal that the adsorption mechanism of ferric ion on NF is chemisorptions, heterogeneous multilayer and spontaneous in nature (DG = -19.778 kJ mol -1 ). Adsorption reaction kinetic models, such as pseudo-first order and pseudosecond order, and adsorption diffusion model, such as Weber-Morris intraparticle diffusion model, have been used to describe the adsorption rate and mechanism of the ferric ion onto NF surface. Adsorption of ferric ion on the NF has achieved Lagergren pseudo-second-order model (R 2 = 1.0 approx.) more than Lagergren pseudo-first-order model. The kinetic parameters, rate constant and sorption capacities have been calculated. The new information in this study suggests that NF could be used as a novel filtering materials for removing ferric ions from water.

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Adsorption of lead, zinc and cadmium ions from contaminated water onto Peganum harmala seeds as biosorbent

Cited by 58 publications

References 26 publications

Adsorptive removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies

Adsorptive removal of lead and arsenic from aqueous solution using soya bean as a novel biosorbent: equilibrium isotherm and thermal stability studies

Study of continuous lead removal from aqueous solutions by marble wastes: efficiencies and mechanisms

Adsorption of ferric ions onto natural feldspar: kinetic modeling and adsorption isotherm

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