Isotherm Study of Nickel(II) Adsorption from Aqueous Solution Using Thermally Treated Rice Husk

Farhan, Abdulaal; Ong, Keat Khim; Yunus, W. M. Z. Wan; Jabit, Mohd; Fitrianto, Anwar; Hussin, Abdul Ghapor; Teoh, Chin Chuang

doi:10.14233/ajchem.2017.20264

Cited by 9 publications

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“…From a mathematical point of view, the isotherm that best adjusts the experimental data is Freundlich's with R 2 =0.99, which means that the adsorption mechanism is controlled by chemadsorption according to Gupta and Balomajumder 35 and Sepehr, et al 36 .This result differs from that reported in previous studies by Tejada-Tovar et al 16 ,Uthra and Kadirvelu 37 , and Farhan et al 38 , who determined that the model that best fits nickel adsorption is Langmuir. From the physical point of view of the system, Freundlich's model is also the one that best predicts the behavior of the bagasse palm-nickel adsorption system, since the concentration being worked on is sufficiently high to favour the formation of several layers of adsorbed material, which is complemented by the analysis of biomass composition (Table 5), since the presence of different functional groups implies different adsorption energy in the active sites, since they do not behave in the same way to the pH and temperature conditions worked.…”

Section: Balance Modelingmentioning

confidence: 78%

Study of the Effect of Temperature in the Remotion of NI (II) on African Palm Bagasse (Elaeis guineensis)

2018

IJCTR

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: Heavy metals are pollutants released into the environment, and are highly available as a result of the increase in different activities where they are used, so their presence in aqueous media causes worldwide concern, as they pose a serious threat to ecosystems by being non-biodegradable, toxic and carcinogenic to living beings. The present work evaluated the effect of temperature and pH on the capacity of African palm bagasse (Elaeis guineensis) to remove nickel present in aqueous solutions, studying the kinetics, equilibrium and thermodynamic parameters that determine the process. For this purpose, it was tested in batch system by varying the temperature and pH of the solution, keeping constant the agitation rate (200 rpm), adsorbent dose (5 g *100ml -1 ), initial metal concentration (100 ppm) and the size of the adsorbent (0.1 mm). It was found that the best adsorption conditions were 54.9 ºC and pH 5.93, obtaining a maximum adsorption capacity of 17.01 mg g -1 corresponding to a removal of 85.14 %. The kinetic model that best fits the experimental data was Elovich and the isotherm that best describes the process is Freundlich, with R 2 of 0.9967 and 0.999, respectively. The determined thermodynamic parameters (∆H 0 , ∆G 0 , ∆S 0 ) suggest that the process is favorable, spontaneous, endothermic and reversible under certain operating conditions. The results show that palm bagasse is a good precursor of Nickel adsorbent.

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Section: Balance Modelingmentioning

confidence: 78%

Study of the Effect of Temperature in the Remotion of NI (II) on African Palm Bagasse (Elaeis guineensis)

2018

IJCTR

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“…( 2 = 0.814) indicate that the adsorption process is favorable and have a very good fit for Langmuir isotherm. In figure 5, the adsorption intensity 1⁄ was 2.02 which is greater 1, an indication of unfavorable adsorption since (0 < 1 < 1 ⁄ ) is for favorable adsorption (Ahmad Farhan, 2016) even though the Freundlich model showed a better fit with 2 = 0.972 against 2 = 0.814 for the Langmuir model. An = 0.152, = 0.285 and 2 = 0.994, 2 = 0.928 was obtained by (Rodriguez et al, 2010) for untreated and treated rice husk respectively.…”

Section: Resultsmentioning

confidence: 94%

Characterization and Removal of Nickel (II) from Paint Industry Effluent by Rice Husk Adsorbent

Obianyo¹

2021

RJESTE

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Rice husk adsorbent was studied to assess its efficiency in adsorption of nickel from paint industry effluent and to derive vital parameters that would assist in making timely decisions in tertiary treatment of wastewater. Standard methods were used in conducting the experiments. Results showed that significant adsorption of 84.77% of nickel was removed by carbonized rice husk (CRH) in 10 minutes and 98.42% in 60 minutes, a difference of 13.65%. Optimum pH of 8 was observed as 98.91% of nickel was adsorbed. Slight change in the adsorption efficiencies was noticed between 0.2 g and 0.4 g doses of CRH adsorbent, but reasonable and insignificant change occurred between 0.4 g and 1.0 g doses. Langmuir isotherm plot showed that separation factor was 0.998 an indication of favorable adsorption and a good fit for the Langmuir isotherm model. Therefore, the adsorption process was better described by the Langmuir equilibrium isotherm model. Adsorption intensity of 2.02 was observed in the Freundlich model, a value greater than 1.0 an indication of unfavorable adsorption. Lagergren pseudo first- and second-order plots showed that R2 = 0.799 for pseudo first-order and R2 = 0.969 for pseudo second-order reactions, an indication that adsorption of nickel by CRH follow Lagergren second-order kinetic. FTIR spectra identified N-H, O-H, C=H, C=O, C=C-C, C-Cl, P-O-C, and cis-C-H out-of-plane bend stretching bands as the functional groups involved in nickel adsorption by CRH adsorbent. It was concluded that rice husk is a good adsorbent in tertiary treatment of wastewater.

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“…La tendencia al aumento de la capacidad de adsorción con la concentración inicial del analito, se encontró también al estudiar la adsorción de níquel (II) sobre carbón activado obtenido de bagazo de caña de azúcar y obteniendo que aumentó junto con el aumento en la concentración inicial de Ni (II) de 50 a 250 ppm [18]. También al usar carbón activado a partir de cáscara de arroz se obtuvo un aumento en la capacidad de adsorción de Ni (II) de 0,65 a 1,14 mg/g al aumentar la concentración inicial de 30 a 150 mg/L [48]. Por su parte Amin y colaboradores [49], al evaluar carbones activados a partir de plátano y piña obtuvieron que la capacidad de adsorción incrementó linealmente respecto al aumento a la concentración inicial del ion, como el obtenido en el presente estudio y mostrado en la Figura 3.…”

Section: Estudio De Efectos De Las Variables Sobre La Capacidad De Adsorciónunclassified

Estudio del efecto de la temperatura, concentración inicial de contaminante y dosis de adsorbente en la remoción de Níquel (II) usando residuos agroindustriales

Tovar

Ortíz

García

2020

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El uso de residuos agroindustriales como materiales biosorbentes en procesos de adsorción ofrece altas eficiencias debido a sus características. Se estudió la adsorción de Ni (II) en solución usando residuos agroindustriales del proceso de obtención de almidón a partir de ñame (Dioscorea rotundata), determinando el efecto de la temperatura, concentración inicial y cantidad de adsorbente. Los ensayos de adsorción se realizaron en un sistema por lotes fijando el volumen de solución en 100 mL, pH 6 y agitación de 200 rpm; la concentración remanente en solución fue medida por absorción atómica. El adsorbente se caracterizó mediante análisis elemental y espectroscopia infrarroja de transformada de Fourier (FTIR). De los resultados, se establece que las variables estudiadas a los rangos escogidos no presentan significancia estadística. Se establece que es a 55 °C, 200 ppm y 0,355 gramos de biomaterial donde se obtiene una mayor capacidad de adsorción de 17,67 mg/g, obteniéndose un porcentaje de remoción del 91.17%. Estos resultados sugieren que residuos del proceso de almidón de ñame puede ser eficientemente usada para la remoción de iones de níquel presentes en soluciones acuosas.

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Isotherm Study of Nickel(II) Adsorption from Aqueous Solution Using Thermally Treated Rice Husk

Cited by 9 publications

References 0 publications

Study of the Effect of Temperature in the Remotion of NI (II) on African Palm Bagasse (Elaeis guineensis)

Study of the Effect of Temperature in the Remotion of NI (II) on African Palm Bagasse (Elaeis guineensis)

Characterization and Removal of Nickel (II) from Paint Industry Effluent by Rice Husk Adsorbent

Estudio del efecto de la temperatura, concentración inicial de contaminante y dosis de adsorbente en la remoción de Níquel (II) usando residuos agroindustriales

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