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Chlorellavulgaris, etc ; Aspergillus flavus; adsorption; aqueous solutions; biomass; microalgae; mycelium; pH; remediation; sorption isotherms; wastewater; water treatment; Show all 12 Subjects
Abstract:
... Using filamentous fungi to capture unicellular microalgae is an effective way for microalgae recovery in water treatment. Here, fungi Aspergillus flavus ZJ-1 and microalgae Chlorella vulgaris WZ-1 isolated from a copper tailings pond were used to study the capture effect of ZJ-1 on WZ-1. The highest capture efficiency (97.85%) was obtained within 6 h under the optimized conditions of 30 °C, 150 rp ...
Chlorellavulgaris, etc ; Monoraphidium; absorbance; aquaculture; biochemistry; biomass; brackish water; carotenoids; chlorophyll; culture media; microalgae; nitrogen; physiological state; salt stress; water salinity; Show all 15 Subjects
Abstract:
... We investigated the achievable maxima of optimisation of both growth and physiological condition of the preselected, Baltic green microalgae strains Chlorella vulgaris and Monoraphidium convolutum. The optimisation was divided into 3 consecutive stages of 8 days batch cultures, each focused on the effect of different set of factors on microalgae growth. The conditions identified as the most optima ...
Chlorellavulgaris, etc ; biomass; centrifugation; electrocoagulation; energy; microalgae; Show all 6 Subjects
Abstract:
... The most frequently used method to harvest microalgae on an industrial scale is centrifugation, although this has very high energy costs. To reduce these costs, a continuous electrocoagulation process for harvesting Chlorella vulgaris was developed and tested using a pilot-scale 111 L working volume device consisting of an electrolyser with iron electrodes, aggregation channel and lamellar settler ...
Chlorellavulgaris, etc ; genes; microalgae; microparticles; microplastics; polystyrenes; wastewater; Show all 7 Subjects
Abstract:
... Aquatic and terrestrial ecosystems are receiving micro- and macro-plastic pollutants alarmingly from various anthropogenic activities. The complications caused by microplastics are largely unexplored and need substantial studies. In the current study, we investigated the repressive effects of negatively and positively charged polystyrene microspheres of two variable sizes (0.05 and 0.5 μm) on func ...
Chlorellavulgaris, etc ; anodes; cathodes; microalgae; polymers; stainless steel; technology; Show all 7 Subjects
Abstract:
... As a promising method for efficiently harvesting microalgae, electro-flotation’s performance is related to various factors including electrode design and process operating parameters. In this paper, bubble generation behavior on stainless-steel cathodes, with wire diameters of 0.8 mm, 0.2 mm and 0.05 mm, was studied. The results show that the bubble size increased with the increasing diameter of t ...
Chlorellavulgaris, etc ; biofuels; furnaces; nickel oxide; pyrolysis; sludge; synergism; Show all 7 Subjects
Abstract:
... Co-pyrolysis of Chlorella vulgaris (CV) and Oily sludge (OS) under different mixing ratios were investigated by microwave furnace. NiO, activated carbon (AC) and their 1:1 compound (N1A1) with different additions (5%, 10%, 15% and 20%) were selected as microwave additives to study the effects on optimum mixing ratio of co-pyrolysis. The results indicated that mixing ratio of CV/OS = 1:1 (C1O1) was ...
Chlorellavulgaris, etc ; anaerobic digestion; biochar; biogas; cellulose; methane production; microalgae; Show all 7 Subjects
Abstract:
... The anaerobic co-digestion (AcoD) of microalgae is a prospective option for generating biomethane from renewable sources. This study investigates the effects of inoculum-to-substrate ratio (ISR), C/N ratio and biochar (BC) load on the AcoD of Chlorella vulgaris and cellulose. An initial augmentation of BC at ISR 0.5–0.9 and C/N ratio 10–30 offered a pH buffering effect and resulted in biomethane y ...
Chlorellavulgaris, etc ; adhesion; bioprocessing; calcium; flocculation; industry; microalgae; pH; sediments; Show all 9 Subjects
Abstract:
... The high cost of harvesting microalgae is a major hurdle for the microalgae industry, and an efficient pre-concentration method is required. In this study, the effects of using different pH values (between pH 3 and 11) and calcium (Ca²⁺) concentrations (between 0 and 5 mM) on Chlorella vulgaris sedimentation were investigated by evaluating the spacio-temporal distributions of microalgae cells. Fas ...
Chlorellavulgaris, etc ; algae; biomass; bioreactors; chlorophyll; environment; hydrophobicity; pH; wastewater; Show all 9 Subjects
Abstract:
... The removal of 18 bisphenols at wastewater relevant concentrations (μg L⁻¹ range) was investigated and compared between Chlorella vulgaris cultures with pH adjusted to 6.8 and pH non-adjusted cultures where pH raised to above 10. Bisphenols with a high partition coefficient (log P > 6) partitioned to biomass soon after spiking, whereas bisphenols with a low partition coefficient (log P < 4) remain ...
Chlorellavulgaris, etc ; bioprocessing; dewatering; energy use and consumption; microalgae; microfluidic technology; Show all 6 Subjects
Abstract:
... The aim of this study was to explore an alternative mode of operation for inertial focusing systems and determine the maximum inlet volume fractions at which device performance can be maintained (i.e. cell retention efficiency remains high, here defined as >95%). Microalgae dewatering was selected as a demonstrator application, specifically using Chlorella. A spiral inertial focusing device was ch ...
Chlorellavulgaris, etc ; Desmodesmus; biodiesel; environmental technology; microalgae; municipal wastewater; total phosphorus; Show all 7 Subjects
Abstract:
... Cultivation of microalgae in wastewater is strongly related to the selection of suitable species for a specific type of wastewater. Thus, this study presented the cultivation of isolated microalgae strains, Acutodesmus obliquus CN01 and Desmodesmus maximus CN06 using municipal wastewater, along with Chlorella vulgaris NIES-1269 as the control species. The highest growth rate of 0.23/day was achiev ...
Chlorellavulgaris, etc ; Nannochloropsis; cakes; chlorophyll; fractionation; microalgae; supercritical fluid extraction; temperature; Show all 8 Subjects
Abstract:
... Microalgae fractionation was investigated combining supercritical carbon dioxide extraction of lipids and pigments and protein extraction from the residues, on Chlorella vulgaris and Nannochloropsis oculata. The results indicated that for N. oculata, chlorophyll (a) is extracted rapidly and selectively apart from Chlorophyll (b), representing 34% and 0.41% in 30 min at 450 bar and 50 °C and up to ...
Chlorellavulgaris, etc ; biomass; bioprocessing; bioreactors; culture flasks; mechanistic models; microalgae; nitrates; Show all 8 Subjects
Abstract:
... Kinetic growth models are a useful tool for a better understanding of microalgal cultivation and for optimizing cultivation conditions. The evaluation of such models requires experimental data that is laborious to generate in bioreactor settings. The experimental shake flask setting used in this study allows to run 12 experiments at the same time, with 6 individual light intensities and light dura ...
Chlorellavulgaris, etc ; Monoraphidium; biomass; culture media; glucose; microalgae; olive mill wastewater; toxicity; Show all 8 Subjects
Abstract:
... Phenolic compounds in olive mill wastewater (OMW) are considered an environmental threat due to their antimicrobial properties. Because of the metabolic versatility of microalgae, a biotic removal of these compounds seems a suitable approach. To investigate the biotic removal of phenolic compounds, the three microalgae species Chlorella vulgaris, Acutodesmus obliquus and Monoraphidium braunii were ...
Chlorellavulgaris, etc ; biomass; biosynthesis; lutein; microalgae; monounsaturated fatty acids; nitrogen; specific growth rate; Show all 8 Subjects
Abstract:
... Co-production of multiple products was praised as potential scheme in expanding low-cost applications of microalgal biomass. This work explored concurrent accumulation of lipid/lutein in Chlorella vulgaris triggered by high-light (HL), moderate-light (ML) or low-light (LL) coupling nitrogen-depletion (ND), nitrogen-limitation (NL), and nitrogen-repletion (NR) tactics. Amongst all combination cases ...
Chlorellavulgaris, etc ; agriculture; data collection; electronics; image analysis; microalgae; normal distribution; regression analysis; Show all 8 Subjects
Abstract:
... Efficiently monitoring microalgal density in real time is critical in closed systems of cultivating algae. In the monitoring methods proposed in the literature, image based techniques present practically potential since they are nondestructive and more biosecured. However, in the existing image analysis methods, parameters of the color-to-grayscale conversion formulae are predefined and only appli ...
Chlorellavulgaris, etc ; catalysts; density functional theory; energy; morpholines; nitriles; pyrolysis; synergism; temperature; thermogravimetry; urea; Show all 11 Subjects
Abstract:
... The catalytic pyrolysis behavior of Chlorella vulgaris (CV) with urea (UR), and its product distribution were investigated using TG-FTIR and Py-GC/MS. The mechanism of formation of nitrogen- and oxygen- containing compounds (NOCCs) were determined using density functional theory (DFT). The thermogravimetric results demonstrated that the introduction of UR reduced the temperature (342 ℃) of the mas ...
Chlorellavulgaris, etc ; Phaeodactylum tricornutum; Porphyridium; biomass; centrifugation; flocculation; freshwater; industry; metabolites; microalgae; pH; polyacrylamide; Show all 12 Subjects
Abstract:
... The effects of microalgae harvesting methods on microalgal biomass quality were evaluated using three species namely the freshwater green alga Chlorella vulgaris, marine red alga Porphyridium purpureum and marine diatom Phaeodactylum tricornutum. Harvesting efficiencies of polyacrylamide addition, alkaline addition, and centrifugation ranged from 85 to 95, 59–92 and 100%, respectively, across thes ...
Chlorellavulgaris, etc ; bioaccumulation; dissolved organic matter; humic acids; pollution; research; risk assessment; rivers; toxicity; Show all 9 Subjects
Abstract:
... Dissolved organic matter (DOM) is ubiquitous in natural waters which exhibits obvious effects on the toxicity of heavy metals. However, information on the toxicity of heavy metals in the presence of DOMs with different molecular weights (MWs) was still unclear. In this study, Suwannee river humic acid (SRHA) and algae-derived organic matter (ADOM) were selected as typical terrestrial and microbial ...
Chlorellavulgaris, etc ; Chlamydomonas reinhardtii; Cryptomonas; algae; autotrophs; freshwater; light intensity; meta-analysis; physiology; phytoplankton; Show all 10 Subjects
Abstract:
... Light fluctuations are ubiquitous, exist across multiple spatial and temporal scales, and directly affect the physiology and ecology of photoautotrophs. However, the indirect effects of light fluctuations on the sensitivity of organisms to other key environmental factors are unclear. Here, we evaluate how photoperiod regime (period of time each day where organisms receive light), a dynamic element ...