Tolerance and sorption of Bromacil and Paraquat by thermophilic cyanobacteria Leptolyngbya 7M from Costa Rican thermal springs

Brenes-Guillén, Laura; Fuentes-Schweizer, Paola; Garcı́a-Piñeres, Alfonso; Uribe‐Lorío, Lorena

doi:10.1016/j.jconhyd.2019.103539

Cited by 7 publications

(6 citation statements)

References 53 publications

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“…This increase in the activated carbon adsorption capacity could be due to the abundance and availability of the active site. Similar patterns were reported by Brenes et al [18] in the study of adsorption capacities for Organochlorine pesticides using modified unsaturated polyester resin which showed increased adsorption with the increased contact time. Also, Ramesh observed that metal ions or adsorption removal increase with contact time [19].…”

Section: Effect Of Timesupporting

confidence: 88%

Kinetic and Equilibrium Isotherm of Pesticides (Atrazine) Adsorption Unto Activated Carbon of Calabash (Lagenaria Siceraria)

Chukwudi-Madu

Agboeze

Chime

et al. 2022

EPRA

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The adsorption of pesticides (Atrazine) from water onto activated carbon prepared from calabash was investigated. The kinetic and equilibrium study was carried out, and data obtained showed that time duration, the concentration of the solution, the dosage of activated carbon and the pH of the solution greatly influenced the adsorption process. The adsorption kinetic study of the pesticide was done using various models. The result best fits pseudo-second-order using the coefficient regression value (0.9922) and intraparticle diffusion. Equilibrium isotherm data were analysed using the Langmuir isotherm model and Freundlich isotherm model. The result of the regression value provided Freundlich isotherm as the best fit to the experimental data, indicating the presence of heterogeneous layer sorption from the regression value of 0.7294. This study suggested that the activated carbon of calabash as a low-cost material is suitable for the adsorption of pesticides from water. Hence it could be applied as a cheap and effective material in removing pesticides in water bodies or industrial waste before disposal. KEYWORDS: Pesticides, activated carbon, adsorption capacity, isotherm, kinetic study, calabash.

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Section: Effect Of Timesupporting

confidence: 88%

Kinetic and Equilibrium Isotherm of Pesticides (Atrazine) Adsorption Unto Activated Carbon of Calabash (Lagenaria Siceraria)

Chukwudi-Madu

Agboeze

Chime

et al. 2022

EPRA

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“…The sites characteristics, and the results obtained by Núñez (2012) suggest the cyanobacteria 7M‐cluster strains may have high metal tolerance to Al, Cu, Pb, besides its proved capacity to remove paraquat and bromacil herbicides in aqueous solution (Brenes‐Guillén et al. 2019).…”

Section: Resultsmentioning

confidence: 99%

Novel Cyanobacterial Diversity Found in Costa Rican Thermal Springs Associated with Rincon de la Vieja and Miravalles Volcanoes: A Polyphasic Approach

Brenes-Guillén

Vidaurre-Barahona

Morales

et al. 2021

Journal of Phycology

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Central America is one of the most important biodiversity hot spots in the world, and Costa Rican microbial communities from thermal springs are the best characterized in the isthmus. Miravalles is an inactive quaternary stratovolcano, and the Rincón de la Vieja is a unique active volcano, in whose slopes diverse hydrothermal springs, such as Las Lilas, are located. These springs harbor extensive microbial mats, whose diversity has been studied. Based on their importance as primary producers, in this study we focused on cultured cyanobacterial diversity from two geothermal environments of northern Costa Rica. Several cultural, molecular and taxonomic techniques were employed to maximize the results of a polyphasic approach. Sample collection sites were physicochemically described, and strains were isolated and characterized by light and electron microscopy. Phylogenetic analysis was performed using 16S rRNA gene sequences and amplified ribosomal DNA restriction analysis (ARDRA). Fifty‐six phylotypes were isolated and classified into 21 morphotypes and identified in 14 genera, some of them might be new species within these genera. Furthermore, according to phylogenetic analysis, there are three possible new genera in our collection. Miravalles and Las Lilas thermal springs are reservoirs of novel phylogeographic lineages of phototrophic microorganisms. This study is the first report of strains that belong to the genera Gloeocapsa, Stanieria, Microseira, Klisinema and Oculatella isolated from thermal springs and growing at temperatures above 50°C. We also obtained isolates assigned to Synechococcus, Leptolyngbya spp., and Fischerella, which are considered typical strains in these environments.

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“…Biological [6,7], physical [8,9], and chemical treatments [10,11] have all been informed in the previous studies for PQ removal. Different effective adsorbents were elaborated for PQ removal such as activated carbon [12], bentonite [13], bio-based material [14][15][16], carbon nanotubes [17], calixarene [18], cellulose nanofiber [19], cyclodextrin [20,21], graphene oxide [22], kaolin [23], magnetic adsorbent [24,25], microorganisms [26], montmorillonite [27], pillararene [28], and silica [29,30].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

2022

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Cationic organic pollutants (dyes and pesticides) are mainly hydrosoluble and easily contaminate water and create a serious problem for biotic and abiotic species. The elimination of these dangerous contaminants from water was accomplished by adsorption using cyclodextrin nanosponges. These nanosponges were elaborated by the cross-linking between 1,2,3,4-butanetetracarboxylic acid and β-cyclodextrin in the presence of poly (vinyl alcohol). Their physicochemical characteristics were characterized by gravimetry, acid-base titration, TGA, 13C NMR, ATR-FTIR, Raman, X-ray diffraction, and Stereomicroscopy. The BP5 nanosponges displayed 68.4% yield, 3.31 mmol/g COOH groups, 0.16 mmol/g β-CD content, 54.2% swelling, 97.0% PQ removal, 96.7% SO removal, and 98.3% MG removal for 25 mg/L of initial concentration. The pseudo-second-order model was suitable for kinetics using 180 min of contact time. Langmuir isotherm was suitable for isotherm with the maximum adsorption of 120.5, 92.6, and 64.9 mg/g for paraquat (PQ), safranin (SO), and malachite green (MG) adsorption, respectively. Finally, the reusability performance after five regeneration times reached 94.1%, 91.6%, and 94.6% for PQ, SO, and MG adsorption, respectively.

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Tolerance and sorption of Bromacil and Paraquat by thermophilic cyanobacteria Leptolyngbya 7M from Costa Rican thermal springs

Cited by 7 publications

References 53 publications

Kinetic and Equilibrium Isotherm of Pesticides (Atrazine) Adsorption Unto Activated Carbon of Calabash (Lagenaria Siceraria)

Kinetic and Equilibrium Isotherm of Pesticides (Atrazine) Adsorption Unto Activated Carbon of Calabash (Lagenaria Siceraria)

Novel Cyanobacterial Diversity Found in Costa Rican Thermal Springs Associated with Rincon de la Vieja and Miravalles Volcanoes: A Polyphasic Approach

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

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