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Filtration00:53

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Filtration is a physical separation process that involves passing a suspension through a porous medium to separate solids from fluids. During filtration, solids collect on the porous medium while liquids, also collectively known as the filtrate, pass through. The filtration medium is selected based on the filtration purpose, quantity, and nature of the precipitate. The general criteria for a suitable filtering medium are that it is inert, mechanically strong, nonabsorbent toward dissolved...
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Coagulation01:06

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Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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Dialysis01:15

Dialysis

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Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
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Detergent Purification of Membrane Proteins01:18

Detergent Purification of Membrane Proteins

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Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
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Filtration and Urine Formation01:32

Filtration and Urine Formation

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The function of the kidneys is to filter, reabsorb, secrete, and excrete. Every day the kidneys filter nearly 180 liters of blood, initially removing water and solutes but ultimately returning nearly all filtrates into circulation with the help of osmoregulatory hormones. This process removes wastes and toxins but is also crucial to maintain water and electrolyte levels. Most of these functions are performed by the tiny but numerous nephrons contained within the kidneys.
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Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

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Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
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Batir las proteínas naturales en el agua de filtrado

Yuexiao Shen1

  • 1Department of Civil, Environmental, and Construction Engineering, Texas Tech University, Lubbock, TX 79409, USA.

Science (New York, N.Y.)
|May 13, 2022
PubMed
Resumen

Los canales fluorados artificiales demuestran capacidades superiores de transporte de agua en comparación con las acuaporinas naturales. Este hallazgo pone de relieve nuevos materiales biomiméticos para tecnologías eficientes de purificación y separación del agua.

Área de la Ciencia:

  • Ciencias de los materiales biomiméticos
  • Fenómenos de transporte por membrana
  • Nanotecnología

Sus antecedentes:

  • Las acuaporinas son canales proteicos naturales que facilitan el rápido transporte de agua a través de las membranas celulares.
  • La comprensión y replicación de la permeabilidad eficiente del agua es crucial para el desarrollo de tecnologías avanzadas de separación.
  • Los canales artificiales actuales a menudo luchan por igualar la selectividad y la eficiencia de las contrapartes biológicas.

Objetivo del estudio:

  • Investigar la eficiencia de permeación del agua de los nuevos canales fluorados artificiales.
  • Para comparar el rendimiento de estos canales artificiales con aquaporinas naturales.
  • Evaluar el potencial de los canales fluorados para aplicaciones de purificación de agua.

Principales métodos:

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  • Fabricación de canales fluorados artificiales mediante técnicas avanzadas de nanofabricación.
  • Configuración experimental para medir el flujo de agua y la selectividad a través de membranas de canal.
  • Análisis comparativo de las tasas de permeación del agua entre los canales fluorados y los sistemas basados en aquaporinas.

Principales resultados:

  • Los canales fluorados artificiales exhibieron tasas de permeación de agua significativamente más altas que las acuaporinas.
  • Los canales fluorados demostraron una excelente selectividad del agua, minimizando el paso de otras moléculas.
  • El rendimiento se mantuvo en diversas condiciones experimentales, lo que indica robustez.

Conclusiones:

  • Los canales fluorados artificiales representan una alternativa prometedora a las acuaporinas para el transporte de agua.
  • Estos hallazgos abren nuevas vías para el diseño de canales de agua artificiales altamente eficientes.
  • El rendimiento superior sugiere potencial para aplicaciones industriales en el tratamiento de agua y desalinización.