Sediment Removal with the Opuntia ficus-indica Cactus: A Water Purification Method for Communities in Latin America

Buttice, Audrey L.; Alcantar, Norma

doi:10.1016/b978-0-12-382182-9.00007-4

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…Standard-wall unthreaded PVC pipe for water and clear PVC sheeting used for making the columns were obtained from McMASTER-CARR. Cactus mucilage was extracted from cactus pads by crushing, heating, centrifugation, precipitation with ethanol, and drying as described elsewhere. ,,− …”

Section: Methodsmentioning

confidence: 99%

Interfacial Phenomena of Natural Dispersants for Crude Oil Spills

et al. 2019

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A natural surfactant was studied to simulate the dispersion process of crude oil in water. The interfacial phenomena of this natural dispersant was compared with a commercially available chemical dispersant, COREXIT EC9500A. This functional surfactant was extracted from the mucilage of the Opuntia ficus-indica cactus species. The evaluation to determine the efficacy to disperse crude oil of the cactus-based mucilage extract (nongelling extract, NE) was based on characterizing surface and interfacial tension, dispersion efficiency, mixing effects, salinity effects, stability, and droplets size distributions. We found that surface tension values follow a linear relationship with respect to the natural logarithm of the concentrations of NE. The application of NE in the water phase led to decreasing oil/water interfacial tensions. Surface tension tests were also used to quantify the effect of oil-in-water (O/W) emulsion ratios once either natural or commercialized dispersants were added. A key finding of our work is that the surface tension between typical 6% and 3% v/v O/W emulsions was significantly reduced with the addition of discrete amounts of NE. This result indicated that the dynamic balance between O/W and water-in-oil (W/O) emulsions was thermodynamically more stable toward O/W emulsion states with NE. We also found that O/W emulsions with higher dispersion effectiveness were formed for both 10 and 35 practical salinity units, as the dispersant to oil ratios increased, with a significant correlation to the mixing energy. We observed that the O/W emulsions with natural dispersants had a significantly smaller weighted average diameter compared to those with COREXIT EC9500A. Such a phenomenon can be explained by understanding intermolecular interactions due to the structure and type of dispersant. In conclusion, cactus-based mucilage extracts could be used as environmentally benign dispersants and, therefore, reduce negative social perceptions of the application of dispersants to clean up spilled oil.

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Section: Methodsmentioning

confidence: 99%

Interfacial Phenomena of Natural Dispersants for Crude Oil Spills

et al. 2019

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“…En Latinoamérica la tecnología andina se ha caracterizado por el uso de la biodiversidad en diferentes aplicaciones; por ejemplo, en las zonas rurales del Perú, donde no hay sistemas de tratamiento de agua potable, se usan los mucilagos de cactus para la clarificación de sus fuentes de agua. En México también se han reportado prácticas similares; por ejemplo, la referencia [5] reporta la remoción de sedimentos usando el cactus Opuntia ficus indica y la referencia [6] reporta la aplicación de este cactus en la biorremediación de aguas residuales. En la remoción de metales pesados, la referencia [7] reporta la interacción del mucílago de cactus con los metales pesados.…”

Section: Introductionunclassified

Adsorción de plomo de aguas contaminadas usando el cactus Trichocereus cuzcoensis

Farfan¹,

Bernaola²

2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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This research presents the conditions for the removal of lead from polluted water using a bioadsorbent obtained from the Trichocereus cuzcoensis cactus. The treatment of the contaminated solutions was carried out by the batch technique, using two types of adsorbents from the cactus (The Adsorbent with chlorophyll-ACC and the Adsorbent without chlorophyll-ASC). An adsorption capacity of 160.90 mg/g and 205.40 mg/g was achieved for the ACC and ASC respectively with a concentration of 0.1 g/L. The variation of the adsorption capacity as a function of the pH was studied, both adsorbents have a higher adsorption capacity at a pH 4. Lead kinetics was best described by the pseudo-second-order model and experimental data were adjusted for the Freundlich adsorption isotherm.

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“…En Latinoamérica la tecnología andina se ha caracterizado por el uso de la biodiversidad en diferentes aplicaciones; por ejemplo, en las áreas rurales del Perú, donde no existen sistemas de potabilización de agua, se usan los mucilagos de cactus para clarificar aguas turbias provenientes de ríos u otras fuentes. En México se han reportado prácticas similares; por ejemplo, la referencia [5] reporta la remoción de sedimentos usando el cactus Opuntia ficus indica como un método alternativo de purificación. En el caso del tratamiento de aguas residuales, la referencia [6] indica que los biomateriales como el cactus Opuntia ficus indica muestran una buena eficiencia en la bioremediación de contaminantes presentes en aguas residuales.…”

Section: Introductionunclassified

Adsorción de plomo de aguas contaminadas usando el cactus Opuntia larreyi

Bernaola¹,

Farfan²,

Clemente³

2019

Proceedings of the 17th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Industry, Innovation

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The adsorption of lead from polluted aqueous solutions was investigated using a biosorbent, without chlorophyll, obtained from Opuntia larreyi cactus in batch mode. The biomaterial was characterized using Fourier Transformed Infrared spectroscopy (FTIR), before and after contact with lead; in addition, the interaction between oxygen atoms from functional groups of the biosorbent and lead ions was studied using X-ray Photoelectron spectroscopy (XPS). At pH 5.7 the major adsorption capacity was achieved, 8.26 mg/g with an efficiency of 90 %. The adsorption kinetics of lead was best described by the pseudo-second-order model and the adsorption capacity was adequately described by the Freundlich adsorption isotherm.

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Sediment Removal with the Opuntia ficus-indica Cactus: A Water Purification Method for Communities in Latin America

Cited by 6 publications

References 32 publications

Interfacial Phenomena of Natural Dispersants for Crude Oil Spills

Interfacial Phenomena of Natural Dispersants for Crude Oil Spills

Adsorción de plomo de aguas contaminadas usando el cactus Trichocereus cuzcoensis

Adsorción de plomo de aguas contaminadas usando el cactus Opuntia larreyi

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