Removal of Lead(II) Ions from Aqueous Solution Using <i>Jatropha curcas</i>
 L. Seed Husk Ash as a Biosorbent

Shi, Bingfang; Zuo, Wei; Zhang, Jinlei; Tong, Haijuan; Zhao, Jing

doi:10.2134/jeq2014.12.0533

Cited by 15 publications

(7 citation statements)

References 56 publications

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“…On the other hand, at pH > pHpzc, the hydroxylated species affect the adsorption process, particularly the Pb(OH)2(s) that starts to precipitate on the adsorbent surface, and consequently the adsorption of lead ions decreases. These results are in correspondence with those reported by other authors [1,20,23,24]. Fig.…”

Section: Chemical Characterizationsupporting

confidence: 94%

Adsorption of Lead (Ii) from Aqueous Solution Using Adsorbents Obtained from Nanche Stone (Byrsonima Crassifolia)

et al. 2020

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Abstract. The removal capacity of Pb(II) present in aqueous solution was evaluated, using as a sorbent the nanche stone (Byrsonima crassifolia) naturally (NS), modified with citric acid (MNS) and as activated carbon (AC). The point of zero charge (pHPZC) and the active sites (using the Boehm method and FTIR spectroscopy) were determined. The pHPZC of NS, MNS and AC were in an acid range. The concentration of active sites of NS, MNS and AC were 0.1037, 0.1123 y 0.1404 mol/g, respectively. The infrared spectra (FTIR) detected the formation of acid functional sites associated with the phenol group, carboxylic acids and lactones. The adsorption capacity of lead ions using NS, MNS and AC increases with the increment of the pH of the solution from 3 to 5; nevertheless, at pH 5, precipitation of lead ions is observed. Due to the above, the evaluation of the three materials was carried out at pH 4. Comparing the maximum capacity of adsorption of Pb(II) on NS with respect to MNS and AC at pH 4, it was increased in 2.2 and 10 times, respectively. The chemical modification applied to precursor, as well as its formation to AC, improved their adsorption capacity due to a greater generation of acid sites. The experimental data were represented with the models of Langmuir, Freundlich y Prausnitz-Radke and the parameter values of these isotherms were estimated using a least-squares method which utlilizes an optimization algorithm. Resumen. Se evaluó la capacidad de remoción de Pb(II) presente en solución acuosa, utilizando como adsorbente el hueso de nanche (Byrsonima crassifolia) de forma natural (HN), modificado con ácido cítrico (HNM) y como carbón activado CA. Se determinaron el punto de carga cero (pHPZC) y los sitios activos (utilizando el método Boehm y espectroscopía FTIR). El pHPZC del HN, HNM y CA estuvo en un rango ácido. La concentración de sitios ácidos del HN, HNM y CA fueron de 0.1037, 0.1123 y 0.1404 mol/g respectivamente. Los espectros infrarrojos (FTIR), detectaron la formación de sitios funcionales ácidos asociados al grupo fenol, ácidos carboxílicos y lactonas. La capacidad de adsorción del ion plomo con el HN, HNM y CA, aumentó al incrementarse el pH de la solución de 3 a 5; sin embargo, a pH 5, se observó precipitación de iones plomo. Debido a lo anterior, la evaluación de los tres materiales se realizó a pH 4. Comparando la máxima capacidad de adsorción de Pb(II) en el HN con respecto al HNM y al CA a pH 4, se incrementó en 2.2 y 10 veces, respectivamente. La modificación química aplicada al precursor, así como su formación a CA, amplió su poder de adsorción al desarrollarse una mayor cantidad de sitios activos ácidos. Los datos experimentales se representaron con los modelos de Langmuir, Freundlich y Prausnitz-Radke, y los valores de los parámetros de estas isotermas fueron estimados usando un método de mínimos cuadrados que utiliza un algoritmo de optimización.

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Section: Chemical Characterizationsupporting

confidence: 94%

Adsorption of Lead (Ii) from Aqueous Solution Using Adsorbents Obtained from Nanche Stone (Byrsonima Crassifolia)

et al. 2020

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“…Water pollution with heavy metals is a worldwide concern. High levels of metals are toxic to both humans and the living organisms in aquatic ecosystems [ 1 , 2 ]. Metals come from either natural sources, like soil erosion and volcanic activities, or anthropogenic causes, as environmental problems derived from mining operations like acid mine drainage (AMD) [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide–ZnO Nanocomposites for Removal of Aluminum and Copper Ions from Acid Mine Drainage Wastewater

Rodríguez

Tapia

Leiva-Aravena

et al. 2020

IJERPH

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Adsorption technologies are a focus of interest for the removal of pollutants in water treatment systems. These removal methods offer several design, operation and efficiency advantages over other wastewater remediation technologies. Particularly, graphene oxide (GO) has attracted great attention due to its high surface area and its effectiveness in removing heavy metals. In this work, we study the functionalization of GO with zinc oxide nanoparticles (ZnO) to improve the removal capacity of aluminum (Al) and copper (Cu) in acidic waters. Experiments were performed at different pH conditions (with and without pH adjustment). In both cases, decorated GO (GO/ZnO) nanocomposites showed an improvement in the removal capacity compared with non-functionalized GO, even when the pH of zero charge (pHPZC) was higher for GO/ZnO (5.57) than for GO (3.98). In adsorption experiments without pH adjustment, the maximum removal capacities for Al and Cu were 29.1 mg/g and 45.5 mg/g, respectively. The maximum removal percentages of the studied cations (Al and Cu) were higher than 88%. Further, under more acidic conditions (pH 4), the maximum sorption capacities using GO/ZnO as adsorbent were 19.9 mg/g and 33.5 mg/g for Al and Cu, respectively. Moreover, the removal percentages reach 95.6% for Al and 92.9% for Cu. This shows that decoration with ZnO nanoparticles is a good option for improving the sorption capacity of GO for Cu removal and to a lesser extent for Al, even when the pH was not favorable in terms of electrostatic affinity for cations. These findings contribute to a better understanding of the potential and effectiveness of GO functionalization with ZnO nanoparticles to treat acidic waters contaminated with heavy metals and its applicability for wastewater remediation.

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“…Polysaccharides themselves as well as polysaccharide‐containing biomass are considered excellent adsorbents for harmful metal ions . Exceptional adsorptive properties of polysaccharides are mainly attributed to: (i) high hydrophilicity of the polymer due to the hydroxyl groups of glucose units; (ii) the presence of a large number of functional and reactive groups (like acetamido, primary amino, hydroxyls or sulfonates group); and (iii) flexible structure of the polymer chain, and its facile modification .…”

Section: Introductionmentioning

confidence: 99%

Adhesive Stalks of DiatomDidymosphenia geminataas a Novel Biological Adsorbent for Hazardous Metals Removal

Wysokowski

Bartczak

Żółtowska-Aksamitowska

et al. 2017

CLEAN Soil Air Water

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The application of biomass derived from the nuisance fresh‐water diatom species Didymosphenia geminata toward the adsorption and removal of heavy‐metal ions from water is reported. The cell‐free polysaccharide‐based stalks of these diatoms are used as adsorbents to remove harmful metal ions: Pb(II), Ni(II), and Cd(II). Detailed analyses of the adsorption kinetics using both pseudo‐first‐order model and pseudo‐second‐order models are performed. The results show a strong correspondence to a pseudo‐second‐order kinetic model. The Langmuir and Freundlich models are used to describe the adsorption isotherms. The correlation coefficients (r2) of the Langmuir model are equal to 0.994 (Pb2+), 0.995 (Cd2+), and 0.995 (Ni2+), and the r2 for the Freundlich model are equal to 0.991 (Pb2+), 0.991 (Cd2+), and 0.987 (Ni2+). The experimental data for all metal ions strongly support the Langmuir isotherm model. It is shown that stalks of D. geminata exhibit exceptional sorption capacity (qm) for Pb(II) ions of 175.48 mg g−1. Additionally, a high sorption capacity for Cd(II) (145.86 mg g−1), and Ni(II) (130.27 mg g−1) is observed. The thermodynamic aspects of the adsorption process of selected metal ions are also discussed. Preliminary tests investigating applications of D. geminata stalks for sewage purification from galvanic industry and battery and accumulator production were performed. These comprehensive studies show that D. geminata can be robustly applied for the removal of harmful metal ions from wastewater.

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Removal of Lead(II) Ions from Aqueous Solution Using Jatropha curcas L. Seed Husk Ash as a Biosorbent

Cited by 15 publications

References 56 publications

Adsorption of Lead (Ii) from Aqueous Solution Using Adsorbents Obtained from Nanche Stone (Byrsonima Crassifolia)

Adsorption of Lead (Ii) from Aqueous Solution Using Adsorbents Obtained from Nanche Stone (Byrsonima Crassifolia)

Graphene Oxide–ZnO Nanocomposites for Removal of Aluminum and Copper Ions from Acid Mine Drainage Wastewater

Adhesive Stalks of DiatomDidymosphenia geminataas a Novel Biological Adsorbent for Hazardous Metals Removal

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