Provided is an unique, efficient and cost-effective process for the recovery of acid from acid-rich solutions. The process of the subject matter utilizes a strong oxidizer, such as Caro's acid, to disintegrate or render insoluble organic or inorganic materials such as carbohydrates and complexes thereof contained in acid-rich solutions, to make efficient and simple the separation and recovery of the acid solution. The acid recovered thus obtained is free of organic matter, and containing nearly all of the acid originally contained in the acid-rich solution.

The disclosure relates to spherical crystalline cellulose nanoparticles (SCCNPs) and a process for producing same from cellulosic material; wherein said process comprises contacting a cellulosic material with an Oxone monopersulfate reagent.

The disclosure relates to spherical crystalline cellulose nanoparticles (SCCNPs) and a process for producing same from cellulosic material; wherein said process comprises contacting a cellulosic material with an Oxone monopersulfate reagent.

The present invention discloses methods for synthesis of 2D non-carbon nanomaterials or 2D complex oxides from materials with complex structure e.g. asphaltenes. It discloses a composition comprising a network of one or more 2D non-carbon nanomaterials having a lattice structure. The lattice structure is selected from an orthorhombic system, monoclinic system, triclinic system. The lattice structure is formed by (ASU)n, where ASU is asymmetric unit and n>=1, where ASU is (TxLyMz) where T is an alkaline metal, L is a chalcogen, O is oxygen, x>=5, y>=2, z>=8. The lattice structure is formed by (ASU)n, where ASU is asymmetric unit and n>=1, where ASU is (TxLyMz H) where T is an alkaline metal, L is a chalcogen, O is oxygen, x>=1, y>=1, z>=5. Examples of the disclosed composition are a network of one or more 2D nanostructures having an asymmetric unit of NaSO.sub.5H or Na.sub.2S.sub.2O.sub.8.

Provided is an unique, efficient and cost-effective process for the recovery of acid from acid-rich solutions. The process of the subject matter utilizes a strong oxidizer, such as Caro's acid, to disintegrate or render insoluble organic or inorganic materials such as carbohydrates and complexes thereof contained in acid-rich solutions, to make efficient and simple the separation and recovery of the acid solution. The acid recovered thus obtained is free of organic matter, and containing nearly all of the acid originally contained in the acid-rich solution.

Provided is an unique, efficient and cost-effective process for the recovery of acid from acid-rich solutions. The process of the subject matter utilizes a strong oxidizer, such as Caro's acid, to disintegrate or render insoluble organic or inorganic materials such as carbohydrates and complexes thereof contained in acid-rich solutions, to make efficient and simple the separation and recovery of the acid solution. The acid recovered thus obtained is free of organic matter, and containing nearly all of the acid originally contained in the acid-rich solution.

Provided is an unique, efficient and cost-effective process for the recovery of acid from acid-rich solutions. The process of the subject matter utilizes a strong oxidizer, such as Caro's acid, to disintegrate or render insoluble organic or inorganic materials such as carbohydrates and complexes thereof contained in acid-rich solutions, to make efficient and simple the separation and recovery of the acid solution. The acid recovered thus obtained is free of organic matter, and containing nearly all of the acid originally contained in the acid-rich solution.

Provided is an unique, efficient and cost-effective process for the recovery of acid from acid-rich solutions. The process of the subject matter utilizes a strong oxidizer, such as Caro's acid, to disintegrate or render insoluble organic or inorganic materials such as carbohydrates and complexes thereof contained in acid-rich solutions, to make efficient and simple the separation and recovery of the acid solution. The acid recovered thus obtained is free of organic matter, and containing nearly all of the acid originally contained in the acid-rich solution.

The invention provides a method for producing a peroxymonosulfuric acid solution with high stability, including the steps of mixing 35 mass % or more of hydrogen peroxide and 70 mass % or more of sulfuric acid to react them, cooling the reaction solution to 80 C. or lower within five minutes after initiation of the mixing step, and diluting the reaction solution with water four times or more as much as the reaction solution by mass.

The invention provides a method for producing a peroxymonosulfuric acid solution with high stability, including the steps of mixing 35 mass % or more of hydrogen peroxide and 70 mass % or more of sulfuric acid to react them, cooling the reaction solution to 80 C. or lower within five minutes after initiation of the mixing step, and diluting the reaction solution with water four times or more as much as the reaction solution by mass.