Chlorella Articles
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p‐nitrophenol toxicity to and its removal by three select soil isolates of microalgae: The role of antioxidants
The nontarget effects, in terms of biochemical changes induced by p‐nitrophenol (PNP) in three soil microalgae, Chlorella sp., Chlorococcum sp., and Heterochlamydomonas sp., and the PNP removal efficiency of these isolates were determined. On exposure to 20 mg L–1 PNP, Chlorella sp. showed greater activity of peroxidase, superoxide dismutase, and glutathione reductase as well as high contents of ...
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Preparation of quaternary ammonium–Chlorella vulgaris and its adsorption of Ag(CN)2−
A novel anion exchange resin, quaternary ammonium–Chlorella vulgaris (QACV), was prepared by introducing quaternary ammonium groups onto dried Chlorella vulgaris as base material. Degrees of epoxy, amine and quaternary ammonium groups of QACV were measured. Water retention, optical microscopy, and Fourier transform infrared spectrometry were used to characterize QAVC. The adsorption behavior ...
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Joint immobilization of plant growth-promoting bacteria and green microalgae in alginate beads as an experimental model for studying plant-bacterium interactions
A simple, quantitative experimental model, offering a convenient and basic approach to studies of plant-bacterium interactions, is proposed. This involves immobilizing a unicellular, freshwater microalga, a Chlorella species, serving as the plant, with a plant growth-promoting bacterium, an Azospirillum species, in small alginate beads to allow close interaction and to avoid external ...
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Optimization of simultaneous biomass production and nutrient removal by mixotrophic Chlorella sp. using response surface methodology
The bioprospecting of potentially mixotrophic microalgae in a constructed wetland was conducted. A locally isolated microalga, Chlorella sp., was grown to determine the effect of temperature, aeration rate, and cultivation time on simultaneous biomass production and nutrient removal from piggery wastewater using central composite design (CCD). The most important variable for the biomass ...
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Assessment of a tannin-based organic polymer to harvest
Chlorella vulgaris biomass from swine wastewater digestate phycoremediationThis study investigated the efficiency of an organic tannin polymer alone or amended with polyacrylamide to harvest Chlorella vulgaris biomass grown in a laboratory-scale photobioreactor treating swine wastewater digestate. The effect of biomass concentration, tannin (TAN) dosages and changes in pH were evaluated in jar test experiments. Among the TAN concentrations tested (11, 22, 44, 89, 178 ...
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Photosynthetic and cellular toxicity of cadmium in Chlorella vulgaris
The toxic effects of cadmium (Cd) on the green alga Chlorella vulgaris were investigated by following the response to Cd of various toxicity endpoints (cell growth, cell size, photochemical efficiency of PSII in the light or ФPSII, maximal photochemical efficiency or Fv/Fm, chlorophyll a fluorescence, esterase activity and cell viability). These toxicity endpoints were studied in laboratory ...
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Investigation of initial pH effects on growth of an oleaginous microalgae
Chlorella sp. HQ for lipid production and nutrient uptakeUsing microalgae for synchronous biodiesel production and wastewater treatment is a promising technology. The growth, lipid accumulation and nutrient uptake characteristics of an oleaginous microalga Chlorella sp. HQ were evaluated at different initial pH from 5.0 to 11.0. The pH values changed towards neutrality and ended in the range 6.0–9.0 without artificial control. The alkalinity ...
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Rosebud Pilot Project - Case Study
Symbiotic Algae Cultivation System - Pilot Launch 2018 The Hamlet of Rosebud currently discharges 9,460 m3 of effluent from their 60 residences into a 30 year old septic field which is now failing. Symbiotic Envirotek Inc., in partnership with Wheatland County and the residents of Rosebud, intend to implement an Algae Cultivation BiofieldTM (ACS) that will replace the septic field and ...
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Cultivation of microalgae (
Oscillatoria okeni andChlorella vulgaris ) using tilapia-pond effluent and a comparison of their biomass removal efficiencyThe uptake of dissolved nutrients by microalgae is the primary way to remove nitrogen in aquaculture systems. Many authors have studied the use of microalgae to treat wastewater from aquaculture. However, excessive microalgae accumulation may cause high levels of organic matter and suspended solids in the final effluent. Thus, an efficient way to remove excess algae is needed in wastewater ...
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A novel optical panel photobioreactor for cultivation of microalgae
In this study, a novel optical panel photobioreactor (OPPBR) equipped with a V-cut/or flat optical panel (OP) and a light source, i.e., light-emitting diodes (LEDs) was developed. The performance of this OPPBR was assessed using cultures of Chlorella vulgaris. Growth rates of biomass were compared in bioreactors operated separately using a V-cut OP, or a flat-plate OP both equipped with LEDs or ...
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Effect of straw leachates from Cry1Ca‐expressing transgenic rice on the growth of Chlorella pyrenoidosa
Because of the prevalence of algae in rice paddy fields, they will be exposed to Bacillus thurigiensis (Bt) proteins released from Bt protein‐expressing genetically engineered rice. To assess the effects of leachates extracted from Cry1Ca‐expressing transgenic rice (T1C‐19) straw on the microalga Chlorella pyrenoidosa, we added purified Cry1Ca (10, 100, 1000 µg/L) and five concentrations of ...
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Combined yeast and microalgal cultivation in a pilot-scale raceway pond for urban wastewater treatment and potential biodiesel production
A mixed culture of oleaginous yeast Lipomyces starkeyi and wastewater native microalgae (mostly Scenedesmus sp. and Chlorella sp.) was performed to enhance lipid and biomass production from urban wastewaters. A 400 L raceway pond, operating outdoors, was designed and used for biomass cultivation. Microalgae and yeast were inoculated into the cultivation pond with a 2:1 inoculum ratio. Their ...
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Why is NASA taking astaxanthin to space?
It was only a matter of time until NASA (National Aeronautics and Space Administration U.S.A.) began to study the benefits of taking microalgae into space. Consider the resilience of microalgae combined with the many potential health benefits they can provide to the astronauts. Recently, NASA has been testing the growth of microalgae in space for its potential use during long-duration space ...
By Algatech
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Chlorella for protein and biofuels: from strain selection to outdoor cultivation in a Green Wall Panel photobioreactor
Chlorellais one of the few microalgae employed for human consumption. It typically has a high protein content, but it can also accumulate high amounts of lipids or carbohydrates under stress conditions and, for this reason, it is of interest in the production of biofuels. High production costs and energy consumption are associated with its cultivation. This work describes a strategy to reduce ...
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How Do You Get Rid Of Algae Fast From Golf Course?
Algae (photosynthetic organisms) can be found in almost any aquatic environment, such as ponds on golf courses. Depending on the type and level of growth, golf course pond algae can be beneficial and challenging. Therefore, here are some critical points about golf course pond ...
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