SÍNTESIS DE CARBÓN ACTIVADO A PARTIR DE EPICARPIO DE Attalea macrolepis Y SU APLICACIÓN EN LA REMOCIÓN DE Pb2+ EN SOLUCIONES ACUOSAS

Ramos, Iliana Jiménez; Rondón, Wendy; Astudillo, Luisa Rojas de; Gáscue, Blanca Rojas de; Prin, José Luis; Freire-Lista, David Martín; Díaz, Yraida; Pino, Karina M. Yachi Del; González, Oscar

doi:10.20937/rica.2017.33.02.11

Cited by 6 publications

(7 citation statements)

References 27 publications

(48 reference statements)

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“…The lead values found after treatment with the adsorbent material are within the permissible limits by current Colombian regulations. These removal percentages are below those found by Jiménez et al (2017).…”

Section: Pb 2+ Removalcontrasting

confidence: 69%

“…The amount of industrial and domestic waste dumped into the environment has increased the contamination of aquatic reservoirs and water resources (Prado et al, 2014). Due to this, regulations are increasingly strict regarding the elimination of pollutants from effluents (Jiménez et al, 2017). The presence of heavy metals stands out among the contaminants of greatest interest due to their toxicity to biota, since they do not degrade to less harmful species (Mohammadi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Removal of Pb2+ from industrial wastewater using activated carbon from Persea americana seed

2023

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Activated carbon is a material that has various environmental applications, such as the adsorption of metallic lead ions (Pb2+). It can be obtained from different plant species. In this research, the seed of Persea americana (Avocado- HASS variety) was obtained from local markets in the city of Cartagena to be used in the removal of Pb2+ from wastewater from the fishing industry. To obtain activated carbon, the seed was carbonized in a Terrigeno-brand clay oven, Model DB 1200. Orthophosphoric acid at 21% w/v was used as an activating agent. The residual water was characterized following the APHA specifications. The turbidity was determined by nephelometry in a Turbiquant 300 IR turbidimeter. The Pb2+ concentration was determined by atomic absorption spectroscopy in a Thermo Scientific iCE 3300 equipment. The chemical surface of the material was performed by Fourier transform infrared spectroscopy (FTIR). The carbons were morphologically characterized using a scanning electron microscope SEM (Jeol 5910LV), visualized at 15kV. A yield of 20.38% by mass of coal is achieved. The pores are of irregular size, ranging from 16.2 to 55.98 μm. 65% of Pb2+, turbidity (57.6%), color (57%), total solids (50.2%), as well as BOD (53.12%) and COD (36%) are removed, finding statistically significant differences in values at the 95% level of significance. The seed of Persea americana (HASS avocado) can serve as plant material to obtain an adsorbent material (activated carbon) and be used in the removal of Pb2+ from wastewater. Keywords: activated carbon, adsorption, avocado seeds (HASS variety), Pb2+, removal.

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Section: Pb 2+ Removalcontrasting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Removal of Pb2+ from industrial wastewater using activated carbon from Persea americana seed

2023

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“…We conducted FTIR studies with the adsorbent material both before and after phosphate adsorption. After adsorption, the adsorbent was filtered and dried at 60 • C until reaching a constant weight [63]. The adsorption capacity of activated carbon is determined by its porous structure and is strongly influenced by the chemical structure of the adsorbent surface [52].…”

Section: Adsorbent Materialsmentioning

confidence: 99%

Sanky (Corryocactus brevistylus) Peel as Low-Cost Adsorbent for Removal of Phosphate from Aqueous Solutions

et al. 2021

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This study aimed to evaluate the adsorption capacity of an adsorbent obtained using sanky peel for the removal of phosphate from aqueous solutions. The study was conducted in two stages: (1) adsorbent preparation considering yield, phosphate removal, adsorption capacity, and textural characteristics; (2) an assessment of the effectiveness of using sanky peel as an adsorbent for removing phosphates from aqueous solutions. Batch adsorption was studied in aqueous solutions containing phosphate and calcium ions with the selected adsorbent. Adsorption kinetics and equilibrium isotherms were studied using mathematical models. The adsorption kinetics followed the pseudo-second-order, Elovich, and Weber–Morris models, thus demonstrating that adsorption rates were not controlled by multiple processes. Adsorption equilibrium data fitted best with the Dubinin–Radushkevich model. Finally, a Fourier transform infrared spectroscopy analysis revealed the presence of brushite spectra bands after adsorption. The results of this study can help better understand the use of sanky peel as an adsorbent and good alternative for aqueous phosphate adsorption.

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“…The cities, industry and agriculture are the most consumers [1]. However, within the industrial sector, some companies discharge untreated wastewater into open water sources, reducing its quality, due to their pollutants, among which the heavy metals come out, the Ni and Cr cationes, characterized by having a molecular weight greater than 23, damaging plant and animal life and compromising human life itself because of their toxicity to biota, due to the fact that they are not degraded [2,3,4].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Use of Agroindustrial by-Products in the Removal of Metal Ions in Aqueous Solution

et al. 2019

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Contamination of surface waters with heavy metals causes concern due to their toxicity, resistance to degradation and adverse effects on human health and aquatic biota. On the other hand, the search for uses and applications of agroindustrial waste has become a priority in the environmental agenda, due to the large volumes generated. Thus, adsorption is presented as an alternative to using these wastes in the treatment of water contaminated with metal ions. The objective of this work was the study of the use and characterisation of adsorbents of an agroindustrial source (palm bagasse) and by-products of the process of obtaining starch (yam and plantain), for its use in the removal of Cr (VI) and Ni (II) ions in a batch system. The adsorption tests were carried out at an initial concentration of 100 ppm ions at 200 rpm using 1 g of material in 100 mL of solution. The adsorbents were characterised by Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, micro-elemental analysis, physicochemical analysis and surface area measurement by Brunauer-Emmett-Teller analysis. From the results, it is established that the palm bagasse has a pore volume twice higher than the other biomaterials. It was determined by the adsorption results, for Cr (VI), were superior in all materials to those obtained for Ni (II). The three agroindustrial residues studied presented high percentages of adsorption efficiency, above 70%, with palm bagasse standing out with an adsorption efficiency of 92%; Therefore, the use of these three biomasses is recommended to treat water contaminated with Cr (VI).

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SÍNTESIS DE CARBÓN ACTIVADO A PARTIR DE EPICARPIO DE Attalea macrolepis Y SU APLICACIÓN EN LA REMOCIÓN DE Pb2+ EN SOLUCIONES ACUOSAS

Cited by 6 publications

References 27 publications

Removal of Pb2+ from industrial wastewater using activated carbon from Persea americana seed

Removal of Pb2+ from industrial wastewater using activated carbon from Persea americana seed

Sanky (Corryocactus brevistylus) Peel as Low-Cost Adsorbent for Removal of Phosphate from Aqueous Solutions

Characterization and Use of Agroindustrial by-Products in the Removal of Metal Ions in Aqueous Solution

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