50 results about "Methylthionine Chloride" patented technology

The invention discloses a bismuth ferrite-graphene compounding photochemical catalyst with visible light responds, and a preparation method of the bismuth ferrite-graphene compounding photochemical catalyst. The catalyst prepared by the method comprises the following components according to mass percentage: 60-95% of bismuth ferrite and 5-40% of graphene. The preparation method is characterized in that the reduction of graphite oxide and the compounding of the bismuth ferrite and the graphene are finished by one step, and the catalyst prepared by the method has relatively high magnetism and good visible light responds. When the catalyst prepared by the method is used for treating methylthionine chloride solution by using visible light catalysis, a relatively good degradation effect can be obtained. Therefore, the invention has significance in the development of the visible light catalyst, and the visible light catalyst has a good application prospect when being used for sewage treatment.

The method for preparing active carbon from bamboo raw material includes the following steps: (1). mao bamboo and waste produced by making bamboo wares are used as raw material, through cutting and screening, and screening bamboo scraps or screening bamboo scraps and making them form; (2). low temp. pyrogenic distillation carbonization of bamboo raw material in carbonization furnace, its pyrogenic distrillation carbonization temp. is 200-600 deg.C; (3). in the presence of micro oxygen placing the carbonized bamboo raw material into activating furnace and making activation by using superheated steam at high-temp., activating temp. is 400-850 deg.c; and (4) breaking or water washing activated active carbon, drying, sorting and sieving to obtain the invented product. Before carbonization the bamboo raw material can be soaked in mixed solution formed from zinc chloride and hydrogen peroxide or mixed solution formed from phosphoric acid and hydrogen peroxide. Its product not only possesses the advantages of all the wooden active carbons, but also its methylthionine chloride decolouring power can be raised by 20%.

The invention relates to a method for processing methylthionine chloride in a printing and dyeing wastewater, and belongs to the field of sewage treatment. The method comprises the following steps: crushing aluminum foil powder into aluminum powder by virtue of a fluid jet mill, screening the aluminum powder into 200-300-mesh powder; putting the screened aluminum powder in 30% ammonium peroxydisulfate for 1-2 hours; adding 3%-5% of urea, stirring at 60-70 DEG C for 2-3 hours, and adding 10-50ppm of sodium dodecyl benzene sulfonate and stirring for 1-2 hours; vacuumizing at 80-90 DEG C to dry by distillation at 60-70 DEG C; under protection of nitrogen, heating to 800-900 DEG C to obtain the modified aluminum powder adsorbent; uniformly mixing the modified aluminum powder adsorbent with the activated carbon at the ratio of 1 to 5, feeding to a sodium hydroxide solution with the mass concentration being 5% to soak for 12-24 hours; filtering the mixed solution, and drying in a muffle furnace at 100-105 DEG C, wherein the concentration range of the raw wastewater is 620-670mg / L; and finally putting the modified aluminum powder into the wastewater, wherein the concentration range of methylthionine chloride in the printing and dyeing wastewater is 0.75-0.87mg / L by detection, and the removal rate is 99.87%.