Adsorción de cromo (VI) y mercurio (II) en solución utilizando jacinto (Eichhornia crassipes)

Tobar, Candelaria Tejada; Astudillo, Isabel Cristina Paz; Correa, Diofanor Acevedo; Fortich, María Espinosa; Badel, Cristina López

doi:10.18684/bsaa.v19.n1.2021.1563

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…From these fits obtained and the correlation coefficient, it was established that the pseudosecond-order model describes the behavior of the adsorption process [63]. Therefore, it was established that both biochars could adsorb MB and that chemisorption occurs due to the formation of chemical interactions between the adsorbent and adsorbate on the surface [102].…”

Section: Adsmentioning

confidence: 96%

Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Carneiro,

Morais,

de Carvalho Melo

et al. 2023

Sustainability

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Rapid industrial development has led to the use of numerous dyes responsible for significant water pollution worldwide. Adsorbents have been developed to treat these waters, mainly in the form of activated biochar, which has several advantages, one of which is its good surface characteristics, such as high surface area and pore volume. The objective of the investigation was to analyze the efficiency of removing the methylene blue model dye in aqueous solutions through the adsorption process using biochar chemically activated from the leaf and stem of water hyacinth (Eichhornio crassipes) as a bioadsorbent. This study carbonized the stem and leaf containing zinc chloride at 600 °C. The materials were characterized by different techniques and were tested for their ability to adsorb methylene blue. The activated stem and leaf biochars removed approximately 285.71 and 322.58 mg g−1 of the dye, respectively, indicating that the adsorption is more significant in the leaf. Pseudo-second-order kinetics was the most suitable model to describe dye adsorption on biochars, and the experimental isotherm data fit the Langmuir model. It is concluded that the application of activated water hyacinth biochar is a renewable resource with the potential for effluent treatment.

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Section: Adsmentioning

confidence: 96%

Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Carneiro,

Morais,

de Carvalho Melo

et al. 2023

Sustainability

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“…The treatment with iron (Fe), optimized the efficiencies of Cr (VI), showing more treatment time and treating about 25% more water. The experiment of [37] had an efficiency of 73% of Cr (VI) with the (EC); in [25], this biomass also had an efficiency of 85% for Cr (VI), and in [30] the efficiency of Cd (II) was 85% (see Table 1). Algae 300 85 Cu (II) [41] Almond shell 100 95 Cr (VI) [42] Biomass + Fe 100 96 Cr (VI) [28] Bacillus + Biochar 100 95 Cr (VI) [42] Biochar + Fe 100 98 Cr (VI)…”

Section: Experimental Processmentioning

confidence: 99%

Design, Scaling, and Development of Biofilters with E crassipes for Treatment of Water Contaminated with Cr (VI)

Sayago

2021

Water

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The heavy metal water treatment process is the subject of worldwide research. Chromium (VI) is a heavy metal that is very dangerous to humans due to it being able to alter genetic material and cause cancer. Cellulose is an interesting material for removing heavy metals, and excellent removals have been achieved in many experiments at the laboratory scale. However, scaling these processes to polluting industries is not easy. The objective of this research is to design, scale, and test a biofilter with biomass of E crassipes transformed with iron for treatment of water contaminated with Cr (VI). The biomasses of E crassipes (EC) and E crassipes with iron (EC + Fe) were evaluated at the batch laboratory scale to determine the adsorption capacities through Langmuir isotherms. With these capacities, a mass balance was formulated, obtaining the design equation to build a biofilter at the pilot scale and providing the required amount of biomass from (EC) and (EC + Fe) for the adequate treatment of the Cr (VI) present in the water. The mass, as suggested by the relevant equations, for the greatest concentration of Cr (VI) of 500 mg/L was 42 g together with a flow rate of 10 mL/min for the biomass of (EC + Fe); for the biomass of (EC), the suggested model for the treatment of the greatest Cr (VI) concentration of 500 mg/L was 64 g of biomass together with a flow rate of 10 mL/min. We conclude that the two pilot-scale treatment systems were consistent with the Cr (VI) removal process and that the equation for the design was adequate.

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“…características E. crassipes ha sido propuesta como materia prima para producción de energía (Tejada-Tovar et al, 2018;Mitan, 2019), como especie fitoremediadora (Carrion et al, 2012;Atehortua y Gartner, 2013) y como fuente de materia orgánica para elaboración de composta (Balasubramanian et al, 2013;Luna et al, 2015;Reyes et al, 2017;Majumdar et al, 2018) y biofertilizantes (Andika et al, 2013).…”

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Jacinto de agua (Eichhornia crassipes (Mart.) Solms) como sustrato germinativo y abono orgánico para hortalizas

Ramírez Gerardo,

Ibáñez Ocampo,

Arévalo Galindo

et al. 2023

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Eichhornia crassipes es una planta acuática presente en cuerpos de agua con exceso de nutrientes, lo cual favorece su crecimiento y ocasiona un impacto negativo ambiental y social, situación que promueve la búsqueda de alternativas para su aprovechamiento. El objetivo fue evaluar propiedades físicas y químicas de E. crassipes como sustrato para germinación en hortalizas y en forma de bocashi para desarrollo de rábano. Como sustrato germinativo E. crassipes seco y molido se mezcló en cuatro proporciones diferentes con composta y agrolita, considerando un tratamiento control de 100 % de E. crassipes. Bajo un diseño completo al azar se germinaron semillas de Solanum lycopersicum, Cucurbita pepo y Cucumis sativus. En otro ensayo se realizó un bochashi con E. crassipes fresco el cual se aplicó en dosis de 0 %, 15 %, 30 % y 45 % en Raphanus sativus. La germinación varió en los tratamientos con E. crassipes de 0-99 %. Cantidades de 25 % y 50 % de E. crassipes mostraron las mejores características físicas y químicas como sustratos. El bocashi elaborado con E. crassipes mostró ventajas en la calidad de bulbo de rábano indicando dosis de 15 % como recomendable para su producción.

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Adsorción de cromo (VI) y mercurio (II) en solución utilizando jacinto (Eichhornia crassipes)

Cited by 4 publications

References 32 publications

Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Design, Scaling, and Development of Biofilters with E crassipes for Treatment of Water Contaminated with Cr (VI)

Jacinto de agua (Eichhornia crassipes (Mart.) Solms) como sustrato germinativo y abono orgánico para hortalizas

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