Yuan, Jin-hai published the artcileTreatment of 1,2,4-acid wastewater by ferric-carbon microelectrolysis combined with Fenton oxidation process, Name: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, the publication is Chongqing Daxue Xuebao, Ziran Kexueban (2011), 34(9), 121-127, database is CAplus.
Experiments on the treatment process of 1,2,4-acid wastewater combined ferric-carbon microelectrolysis with Fenton oxidation process are carried out. The 1,2,4-acid wastewater is produced in the production process of 6-nitry (6-nitro-1-diazo oxygen naphthalene-4-acid). The exptl. conditions of Ferric-Carbon microelectrolysis, including pH value, reaction time, reaction temperature, Fe/C ratio and dosage of active carbon are studied. Fenton oxidation conditions of pH value, dosage of H2O2 and the economy data of the process are analyzed. Through single-factor experiments, the conditions for treating acid wastewater are found out. PH value is 1, Fe and C mass ratio is 3:1, and iron-carbon microelectrolysis reaction time is 3 h. The iron-carbon micro-electrolysis water is filtered to adjust its pH value into 3, then 2.5% wastewater of H2O2 with mass fraction of 30% is added, a reaction is performed at room temperature for 1 h, the pH value is adjusted into 7∼8, and then the iron-carbon micro-electrolysis water is filtered. The removal efficiency of COD of raw water can be improved to more than 95%. The cost of wastewater treating is 5.4 yuan/m3.
Chongqing Daxue Xuebao, Ziran Kexueban published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C6H8O4, Name: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem