TH100665B - A method for synthesizing carbon nanofiber materials using the hydrothermal process for the absorption and retention of oil spills and related products. - Google Patents

Abstract

Revised Invention Summary 31/08/2016: This invention involves synthesizing biomass-derived carbon nanofiber materials capable of absorbing and retaining oil spills. These materials exhibit a nanoscale physical structure and hydrophobic/hydrophobic chemical structure, achieved through a co-additive hydrothermal process. The resulting product can be used to absorb and retain oil spills before being converted into solid fuel or incinerated. ------------------------- New and Improved Request: This invention develops a synthesis and recycling method for carbon nanofiber materials using carbonization for oil spill absorption and retention. The biomass fibers (cattail) are improved to form complete carbon nanofibers through calcination under inert nitrogen or argon atmospheres, or under normal air conditions. These nanofibers exhibit a nanoscale physical structure and hydrophobic/hydrophobic chemical structure. The resulting product can be used to absorb and retain oil spills, and the absorbed carbon nanofiber material can be reused.

Claims (11)

OCR 26/03/2567 1. The process of synthesizing carbon nanofiber materials using the hydrothermal process for oil spill absorption and containment involves the following steps: a. Biomass is dried by baking at a temperature of 80-100°C for 6-12 hours. b. Co-additives are added to the biomass obtained from step a. c. The mixture from step b is subjected to a hydrothermal process at a temperature of 160-200°C for 4-24 hours to separate the solid components. d. The solid component obtained from step c is dried at a temperature of 80-100°C for 6-12 hours. e. The material obtained from step d is used for oil spill absorption and containment. 2. A hydrothermal synthesis method for carbon nanofiber materials for the adsorption and containment of oil spills, as per claim 1, where the biomass used can be selected from all or any of the following: grass seeds, rice straw, sugarcane bagasse, coconut husk, and cattail flowers. 3. A hydrothermal synthesis method for carbon nanofiber materials for the adsorption and containment of oil spills, as per claim 1 or 2, where the most suitable biomass is cattail flowers. 4. A method for synthesizing carbon nanofiber materials using the hydrothermal process for the adsorption and retention of oil spills, as per claim 1, where the co-extractors are water, acid solution, and base solution. 5. A hydrothermal synthesis method for carbon nanofiber materials for oil spill adsorption and containment, as per claim 4, using water in amounts of 50-500% by weight of the starting biomass, and acid and base solutions in amounts of 1-10% by weight of the starting biomass. 6. A method for synthesizing carbon nanofiber materials using the hydrothermal process for the adsorption and retention of oil spills, as per claim 4, where the acid solutions are sulfuric, hydrochloric, nitric, and phosphoric acids, and the base solutions are sodium hydroxide and potassium hydroxide. 7. A hydrothermal synthesis method for carbon nanofiber materials for the adsorption and retention of oil spills, as per claim 1, under conditions where the carbon nanofibers are not chemically damaged (hydrophobic). 8. A hydrothermal synthesis method for carbon nanofiber materials for the absorption and retention of oil spills, as per claim 1, where step C involves drying using a non-heating or non-direct heat contact technique. 9. A method for synthesizing carbon nanofiber materials using the hydrothermal process for the adsorption and containment of oil spills, as per claim 1, where the oil refers to used engine oil, substandard oil, and crude oil. 10. A hydrothermal synthesis method for carbon nanofiber materials for oil absorption and retention, as per claim 1, where the hydrothermal conditions at 180°C for 8 hours exhibit the highest efficiency in oil absorption and retention. 11. Carbon nanofiber materials with oil absorption and retention properties obtained through the processes described in any one of the tenth claims.