King Fahd University of Petroleum and Minerals

Mazen Khaled Nazal

Mazen Khaled

Muataz Ali Atieh

Firoz Khan

Masoud Al-Rasheidi

Nabeel Saeed Abuzaid

Muhammad A Hawwa

Nabeel Saeed Fuad Abuzaid

A sampler system for water contaminants. The sampler system includes an adsorptive sampler housed within a cylindrical enclosure, which has a top face, a bottom face and a cylindrical surface. The cylindrical surface of the sampler system is fluid-permeable. A cable connects the top face of the cylindrical enclosure to a flotation device. A spring connects the adsorptive sampler to the bottom face of the cylindrical enclosure. The adsorptive sampler includes a housing having a cavity and an adsorptive material disposed inside the cavity. The housing is attached to the spring and includes a front face and a back face. The spring is a cantilever in the form of a rigid film, wherein the rigid film is connected to the bottom face of the cylindrical enclosure along a flat edge of the rigid film.

Sampler system for water contaminants

A method for synthesizing carbon quantum dots (CQDs) including reacting a mixture of macroalgae and ethanol hydrothermally in an autoclave at a reaction temperature between 150 degrees Celsius (° C.) and 250° C. to form a suspension. The method further includes separating the CQDs from the suspension. The CQDs have a size of 1 to 5 nanometers (nm). The CQDs have a Stokes shift of at least 80 nm at an excitation wavelength of 270-410 nm.

Method for making carbon quantum dots from marine biomass

Method for making carbon quantum dots from powered macroalgae

Method for making quantum dots from microbiotic source

Method for synthesizing carbon quantum dots from macroalgae

A biochar-derived adsorbent preferably from, macroalgae can be used for removing phenolic compounds, such as 2,4,6-trichlorophenol and 2,4-dimethylphenol, from aqueous solutions. The carbonization can improve the removal capability of the macroalgae adsorbent for such phenolic compounds with removal efficiencies of 60% or more from high salinity seawater and 100% from distilled water. The adsorption may occur through a mixed mechanism dominated by physisorption following pseudo second-order kinetics. The adsorption of the phenolic molecules may be spontaneous, endothermic and thermodynamically favorable.

Bacteria biochar adsorbent

A method of forming an activated carbon sorbent from a seagrass. The method involves treating a seagrass with a base solution to form an intermediate solid, drying the intermediate solid to form a precursor, and pyrolyzing the precursor at 600 to 1000&#xb0; C. to form the activated carbon sorbent. Preferably the seagrass is. The activated carbon sorbent is used in a method of removing an organic pollutant from a contaminated water. Preferred organic pollutants removed are phenols, specifically 2,4-dimethylphenol and 2,4-dichlorophenol.

Method of making activated carbon sorbent from seagrass for organic pollutant removal from water

A biochar-derived adsorbent preferably frommacroalgae can be used for removing phenolic compounds, such as 2,4,6-trichlorophenol and 2,4-dimethylphenol, from aqueous solutions. The carbonization can improve the removal capability of the macroalgae adsorbent for such phenolic compounds with removal efficiencies of 60% or more from high salinity seawater and 100% from distilled water. The adsorption may occur through a mixed mechanism dominated by physisorption following pseudo second-order kinetics. The adsorption of the phenolic molecules may be spontaneous, endothermic and thermodynamically favorable.

Reusable biomass-derived biochar adsorbent for phenolic compound removal

The present disclosure provides a method for removing sulfur compounds from a fuel containing sulfur compounds. The method includes contacting the fuel with an adsorbent that comprises a carbonaceous material doped with nanoparticles of aluminum oxide to reduce the concentrations of the sulfur compounds. The carbonaceous material is at least one selected from the group consisting of activated carbon, carbon nanotubes, and graphene oxide, and the adsorbent has a weight ratio of C to Al in the range from 3:1 to 30:1, and a weight ratio of C to O in the range from 1:1 to 10:1.

Method for forming a reduced thiophene/dibenzothiophene diesel fuel

Method for forming reduced thiophene diesel fuel using a graphene oxide adsorbent

Method for reducing thiophene in diesel fuel

Method for removing thiophene from diesel fuel with a graphene oxide adsorbent

Method for desulfurizing diesel fuel

A method of removing sulfur compounds from a hydrocarbon fluid. The method includes contacting the hydrocarbon fluid with an adsorbent comprising a carbonaceous material doped with nanoparticles of uranyl oxide (UO) to reduce the concentrations of the sulfur compounds. The carbonaceous material is at least one selected from the group consisting of activated carbon and carbon nanotubes, and the adsorbent has a weight ratio of C to U in the range from 9:1 to 17:1, and a weight ratio of C to O in the range from 5:1 to 13:1.

Growing community of inventors

Dhahran, Saudi Arabia

Mazen Khaled Nazal