Utilización de microalgas de la división Chlorophyta en el tratamiento biológico de drenajes ácidos de minas de carbón

Torres, Darkys Devia; Sepúlveda, Sindy Cáceres; Roa, Alba Lucía; Gelvez, Jonh Hermogenes Suárez; Suárez, Néstor Andrés Urbina

doi:10.15446/rev.colomb.biote.v19n2.70429

Cited by 10 publications

(9 citation statements)

References 7 publications

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“…Overall, the results of this experiment are similar to that reported by Torres et al, (Torres et al 2017), where they obtained removal e ciencies of 66% for total Fe in a treatment system with microalgae from the Chlorophyta division to remove the pollutant load of sewage from a coal mine. Also, (Abdel-Razek et al 2019), evaluated the use of pure cultures of Chlorella vulgaris, Scenedesmus quadricuda, and Spirulina platensis to eliminate Cd, Ni, and Pb from urban and agricultural wastewater.…”

Section: General Performancesupporting

confidence: 89%

Cultivation of Carbohydrate-rich Microalgae with Great Settling Properties Using Cooling Tower Wastewater

Ortíz-Sánchez

Guillén-Garcés

Morales-Arrieta

et al. 2023

Preprint

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Wastewater treatment and simultaneous production of value-added products with microalgae represent a sustainable alternative. Industrial wastewater, characterized by high C:N molar ratios, can naturally improve the carbohydrate content in microalgae without the need for any external source of carbon while degrading the organic matter, macro- and micro-nutrients. This study aimed to understand the treatment, reuse, and valorization mechanisms of real cooling tower wastewater (CWW) from a cement processing industry mixed with domestic wastewater (DW) to produce microalgal biomass with potential for synthesis of biofuels or other value-added products. For this purpose, three photobioreactors with different hydraulic retention times (HRT) were inoculated simultaneously using the CWW-DW mixture. Macro- and micro-nutrient consumption and accumulation, organic matter removal, algae growth, and carbohydrate content were monitored for 55 days. High COD (> 80%) and macronutrient removals (> 80% of N and P) were achieved in all the photoreactors, with heavy metals below the limits established by local standards. The best results showed maximum algal growth of 1.02 g SSV L− 1, and 54% carbohydrate accumulation with a C:N ratio of 31.24 mol mol− 1. Additionally, the harvested biomass presented a high Ca and Si content, ranging from 11 to 26% and 2 to 4%, respectively. Remarkably, big flocs were produced during microalgae growth, which enhanced natural settling for easy biomass harvesting. Overall, this process represents a sustainable alternative for CWW treatment and valorization, as well as a green tool for generating carbohydrate-rich biomass with potential to produce biofuels and fertilizers.

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Section: General Performancesupporting

confidence: 89%

Cultivation of Carbohydrate-rich Microalgae with Great Settling Properties Using Cooling Tower Wastewater

Ortíz-Sánchez

Guillén-Garcés

Morales-Arrieta

et al. 2023

Preprint

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“…In Colombia, there are few studies focused on the use of microalgae in food, animal production, and agriculture, despite the enormous potential of its biodiversity, water resources, climate, as well as the fulfilling needs driven by the high rates of poverty and malnutrition in the country [7]. In contrast, research in Colombia is mainly focused on the use of microalgae in the production of total lipids for biodiesel, wastewater treatment, and bioremediation [119][120][121][122][123][124]. Some research has recently begun in the agro-alimentary sector; however, little has been implemented in recent years (Table 1).…”

Section: Microalgae Production In Colombiamentioning

confidence: 99%

Microalgae: Potential for Bioeconomy in Food Systems

et al. 2021

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The efficient use of natural resources is essential for the planet’s sustainability and ensuring food security. Colombia’s large availability of water resources in combination with its climatic characteristics allows for the development of many microalgae species. The use of microalgae can potentially contribute to sustainable production in support of the agri-food sector. The nutritional composition (proteins, carbohydrates, fatty acids, vitamins, pigments, and antioxidants) of microalgae along with the ease of producing high biomass yields make them an excellent choice for human and animal nutrition and agriculture. Several species of microalgae have been studied seeking to develop food supplements for pigs, ruminants, poultry, fish, crustaceans, rabbits, and even bees. Important benefits to animal health, production, and improved bromatological and organoleptic characteristics of milk, meat, and eggs have been observed. Based on the functional properties of some microalgae species, foods and supplements have also been developed for human nutrition. Moreover, because microalgae contain essential nutrients, they can be utilized as biofertilizers by replacing chemical fertilizers, which are detrimental to the environment. In view of the above, the study of microalgae is a promising research area for the development of biotechnology and bioeconomy in Colombia.

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“…Microalgae have the metabolic capacity to remove iron and heavy metal compounds (22) . It has been reported that for microalgae to carry out this process, they follow two mechanisms: absorption (active/passive) and adsorption, mainly through physical adsorption, chemical adsorption and chelation (33) .…”

Section: Kinetic Parameters Estimation and Nutrient Removalmentioning

confidence: 99%

“…This problem is caused by mines that do not treat MAD, given the high cost of treating these effluents, as well as the lack of technologies that take advantage of these effluents so they could be reincorporated into the process. Some authors have reported the potential of microalgae to grow using MAD, although there is still not much work in this area (22) Therefore, the objective of this Source: own elaboration work is to evaluate the effect of three different nitrogen sources under autotrophic and mixotrophic conditions using DAM, generated in a mine in northeastern Colombia, to determine if there is an effect on the production of biomass and carotenoids using Scenedesmus sp.…”

Section: Introductionmentioning

confidence: 99%

Different effect of nitrogen sources in autotrophic and mixotrophic culture of Scenedesmus sp for biomass and carotenoids production using acidic coal mine drainage effluents

Urbina-Suarez

2021

inycomp

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In the present study, the conditions for autotrophic and mixotrophic culture of Scenedesmus sp were established. Effluents from acidic coal mine drains were used to study biomass and carotenoid production, both under autotrophic and mixotrophic conditions in relation to the effect of different sources of nitrogen: sodium nitrate, urea and ammonium phosphate. Pollutant removal was determined, such as COD, TOC, heavy metals, ions and total suspended solids. Batch cultures lasted nine days and biomass production, carotenoids and pollutant removal were compared in each condition. The highest biomass concentration reached was 1.2 g/L in the mixotrophic culture with urea, followed by the culture with sodium nitrate of 0.9 g/L in a C/N ratio of 6:1. The highest carotenoid specific concentration was reached in the mixotrophic culture with sodium nitrate, 19.43 mg carotenoids /g biomass. The culture with ammonium phosphate was found to be inhibitory for the growth of the microalgae with the lowest results of all the parameters except for the autotrophic culture where the concentration of carotenoids was very similar to those reached with sodium nitrate and urea. Finally, the mixotrophic culture with urea presented the highest removal percentages, being 86.97% for total iron, 58.29% for chlorides and 92.5% for COD.

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Utilización de microalgas de la división Chlorophyta en el tratamiento biológico de drenajes ácidos de minas de carbón

Cited by 10 publications

References 7 publications

Cultivation of Carbohydrate-rich Microalgae with Great Settling Properties Using Cooling Tower Wastewater

Cultivation of Carbohydrate-rich Microalgae with Great Settling Properties Using Cooling Tower Wastewater

Microalgae: Potential for Bioeconomy in Food Systems

Different effect of nitrogen sources in autotrophic and mixotrophic culture of Scenedesmus sp for biomass and carotenoids production using acidic coal mine drainage effluents

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