Text this: Membrane fouling by mixtures of oppositely charged particles

  ______     ___     _    _     ______    ______  
 /_____//   / _ \\  | || | ||  /_   _//  /_   _// 
 `____ `   / //\ \\ | || | ||   -| ||-   `-| |,-  
 /___//   |  ___  ||| \\_/ ||   _| ||_     | ||   
 `__ `    |_||  |_|| \____//   /_____//    |_||   
 /_//     `-`   `-`   `---`    `-----`     `-`'   
 `-`