Light activated water treatment system

Patent metadata

Field	Value
Publication number	US-2020361802-A1
Application number	US-202016943771-A
Country	US
Kind code	A1
Filing date	Jul 30, 2020
Priority date	Jun 28, 2017
Publication date	Nov 19, 2020
Grant date	—

Abstract

A water treatment system with a photocatalytic nanocomposite sheet, an adsorbent layer, and a fibrous filter, wherein the photocatalytic nanocomposite sheet comprises polymethylmethacrylate and silver phosphate, the adsorbent layer comprises plasma activated carbon nanotubes, and the fibrous filter is a composite of polymethylmethacrylate, polyvinylidene fluoride, and polyvinylpyrrolidone polymer fibers, with carbon nanotubes that are dispersed within the polymer fibers and silver nanoparticles that are deposited on the polymer fibers. Various embodiments of the water treatment system and methods of fabricating the photocatalytic nanocomposite sheet, the adsorbent layer, and the fibrous filter are also provided.

First claim

1 . A light activated water treatment system, comprising:
a pipe comprising a water inlet, a water outlet, and a transparent section located between the water inlet and the water outlet; and a photocatalytic nanocomposite sheet comprising polymethylmethacrylate and silver phosphate located inside the transparent section, wherein the photocatalytic nanocomposite sheet is configured to decompose at least a portion of organic pollutants present in water, wherein the photocatalytic nanocomposite sheet comprises the silver phosphate and the polymethylmethacrylate in a weight ratio of between 1:15 to 1:40.

2 . The water treatment system of claim 1 , wherein the transparent section is coil shaped.

3 . (canceled)

4 . The water treatment system of claim 1 , further comprising:
at least one mirror configured to reflect sunlight to the transparent section.

5 . The water treatment system of claim 1 , further comprising:
a filter housing with an inlet and an outlet; and a fibrous filter located inside the filter housing and between the inlet and the outlet, wherein the inlet is fluidly connected to the water outlet.

6 . The filtration system of claim 5 , wherein the fibrous filter comprises polymer fibers comprising polymethylmethacrylate, polyvinylidene fluoride, and polyvinylpyrrolidone, and silver nanoparticles deposited on the polymer fibers.

7 . The water treatment system of claim 6 , wherein the fibrous filter has pores with an average pore size in the range of 5 to 50 nm.

8 . The water treatment system of claim 6 , wherein the fibrous filter further comprises carbon nanotubes that are dispersed in the polymer fibers.

9 . The water treatment system of claim 5 , further comprising:
an adsorbent layer of plasma activated carbon nanotubes located in the filter housing between the fibrous filter and the inlet.

10 - 20 . (canceled)

Assignees

• Univ King Abdulaziz

Inventors

• Salah Numan Abdullah
• Memic Adnan
• Abdel-Wahab Mohamed Shaaban
• Al-Ghamdi Attieh Ali

Classifications

• B01J2235/30

  Scanning electron microscopy; Transmission electron microscopy · CPC title

• B01J35/70

  characterised by their crystalline properties, e.g. semi-crystalline (catalysts comprising carbon B01J21/18; molecular sieves B01J29/00) · CPC title

• B01J35/45

  Nanoparticles · CPC title

• C02F1/283

  using coal, charred products, or inorganic mixtures containing them · CPC title

• C02F2305/08

  Nanoparticles or nanotubes · CPC title