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Showing 1 to 20 of 26 for “"flocculants"”.
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Characterization of industrial flocculants through intrinsic viscosity measurements
… of five industrial polyacrylamide-based flocculants was investigated by determining intrinsic viscosities on dilute flocculant solutions. The Fedors equation was found to be most suitable for all flocculants for determining the intrinsic viscosity. The results indicated that the …
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Synthesis and characterization of starch-based cationic flocculants for harvesting microalgae.
… a procedure to synthesize starch-based cationic flocculants which would be renewable, biodegradable, and non-toxic with harvest performance comparable with or better than commercial flocculants. The procedure involves cationization reaction between starch and glycidyltrimethylammonium chloride …
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Characterization of selected microbial species for bioflocculant producing potential and comparison with traditional flocculants in industrial waste water treatment
… The process is achieved with the help of various flocculants such as natural and synthetic inorganic or organic flocculants. Synthetic flocculants are conventionally used due to their high flocculating efficiency and availability. However, their applications result in serious health problems such …
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Synthesis and application of a grafted flocculant produced from a chemical combination of a bioflocculant TKT and acrylamide (AM)
… to drink and for plants to absorb. Synthetic flocculants are extensively used in water and wastewater treatment due to their effectiveness and low cost. These flocculants consist of a flexible chain of high molecular weight to create a bigger surface area for biochemical reactions to take …
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The effect of flotation reagents on the coagulation and dewatering of flotation tailings
… how flotation reagents, including coagulants, flocculants, depressants, and collectors, affect the coagulation and dewatering of flotation tailings. The BIC has 75% of the world's platinum reserves and 50% of palladium reserves, making it one of the most commercially significant mineral …
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Metal ion removal by adsorptive bubble separation methods
… and quantity of added tensides and polymeric flocculants was studied using experimentally established optimum removal conditions. The optimum percentage removal achieved using iron(III) chloride, aluininium(III) sulphate and copper(II) sulphide in aqueous solution was 75.6, 33.1 and 99.3, …
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Characterization of bioflocculant produced by Proteus mirabilis PJC12 isolated from Tendele coal mine wastewater and its application.
… in water or wastewater treatment. Synthetic flocculants are conventionally used because of their high flocculating activity, low-cost production and availability. However, synthetic flocculants have been reported to have negative impacts on the environment and have caused some serious health …
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Microparticle retention aid systems in mechanical pulp suspensions
… starches (tapioca and waxy maize), cationic flocculants (flocculant 1, linear with low charge density and flocculant 2, branched with medium charge density polyacrylamides) and anionic colloidal silica in improving retention and drainage of thermomechanical pulp (TMP) suspensions loaded with …
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Synthesis, characterization and application of polyacrylamide grafted bioflocculants (TMT-1-g-PAM 2 and TST-1-g-PAM 3)
… It contributes to water scarcity. Grafted bioflocculants have been found to have excellent wastewater remediation capabilities. Therefore, they have become one of the main research focal points in recent times as flocculants. The high efficacy is owed to their unique characteristics, which …
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Production and characterisation of bioflocculant produced by bacterial isolates from Richards Bay harbour, Kwazulu Natal
Bioflocculants are safe and biodegradable extracellular polymers produced by microorganisms during their growth. In comparison with conventionally used flocculants, bioflocculants have the advantage of being safe (no known toxic effects), biodegradable and harmless to the environment. In this …
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An investigation into the impact of residual reagents on flotation in response to process water recirculation
… The primary dewatering reagents considered were flocculants and coagulants. There are two mechanisms by which flocculation occurs: the polymer bridging theory and the patch model. Polyacrylamides (PAM) are the most common flocculants. Coagulants use a charge neutralisation mechanism to take …
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ΕΞΕΥΓΕΝΙΣΜΟΣ ΤΩΝ ΚΑΟΛΙΝΩΝ ΤΗΣ ΝΗΣΟΥ ΜΗΛΟΥ
… AND S102 MINERALS SURFACE. C) THE POLYMER FLOCCULANTS USED, CMC PRODUCED THE BEST RESULTS. THE CATIONIC NALCO 600 PRODUCED LESS SATISFACTORY RESULTS. THE AMPHOTERIC SEPARAN NP10 CAUSED SELECTIVE FLOCCULATION, BUT THE SEPARATION WAS NOT SO SATISFACTORY AS THE ONE OBTAINED BY CMC AND NALCO …
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Green synthesis and characterisation of metal-based nanoparticles using Kombucha tea SCOBY yeast-based bioflocculant and their application in wastewater treatment
… particles. Microorganisms naturally secrete bioflocculants during growth, offering safer, environmentally friendly alternative to chemical flocculants. This study focuses on a bioflocculant from a yeast strain in Kombucha tea SCOBY, highlighting its production, characterization, and application. …
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Determination of low bacterial and viral concentrations in water and selective removal of pathogenic bacteria in water filtration systems
… The results showed that compared to traditional flocculants, LaCl3 had the highest recovery efficiencies for bacteria and viruses detection based on microrespirometric assay, real-time PCR enumeration and infectivity assay. Compared to direct cartridge filtration using Nanoceram[copyright] and …
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Production, Characterisation and Application of Bioflocculants from Pure Bacterial Strains and their Consortia Isolated from Sodwana Bay in Kwa-Zulu Natal, South Africa
… to form large and settleable flocs. Bioflocculants have been the center of attention in bioremediation because of their effectiveness, biodegradability, harmlessness and environmentally inert nature. This study aimed at producing, characterising and applying bioflocculants from pure …
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The aggregation of clay minerals and marine microalgal cells : physicochemical theory and implications for controlling harmful algal blooms
… chloride (PAC) and several other polymeric flocculants by a factor of two. However, the combination of phosphatic clay and PAC (at 5 mg l-1) decreased the amount of clay needed to maintain 80% RE by one order of magnitude. Cell viability and recovery remained high when clay loading stayed …
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A fundamental study of the selective hydrophobic coagulation process
… impurities without the use of oily agglomerants, flocculants or electrolytes. The coagulation occurs at ζ-potentials significantly higher than those predicted by the classical DLVO theory, suggesting that it is driven by a hydrophobic interaction energy. Thus, the process is referred to as the …
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Synthesis and characterization of zinc nanoparticles using consortium of bioflocculant-producingmicroorganisms isolated from uMlalazi catchment, KZNand their application for wastewater treatment
… of large flocs which are easily removable. Bioflocculants are macromolecules secreted by microorganisms duringgrowth. Bioflocculants are safe, biodegradable, innocuous, and produce nosecondary pollutants in the ecosystem which fuels their interest in both scientific and biotechnological fields, …
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Utilization of predispersed solvent extraction for removal and enzymatic degradation of chlorinated solvents in ground water
… destabilization with salts, coagulants, and flocculants at varied pH was examined with and without microbubble flotation. The presence of OCAs in the aqueous phase reduced vapor phase concentrations of PCE as much as 96% and was assessed through apparent Henry's Law constants. TCE …
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The Effect of Using Bioflocculants as Conditioners on Dewatering of Biosludge
… such as hemoglobin (Hb), lignin-based flocculants (LBFs), and protamine to enhance the dewaterability.Cationic polymers improve the dewaterability of sludge by neutralizing the negative charge of the biosludge particles. Biopolymers such as hemoglobin and lignin do not possess high …
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