title: Treatment of TNT red water by layer melt crystallization.
abstract: Treatment of the red water, which is wastewater of 2,4,6- trinitrotoluene (TNT) manufacturing process has been explored using ice crystallization. This study focuses on the formation of ice crystals from the red water in a layer crystallizer under various operating conditions. Among the parameters which affect layer crystallization, attention was given to cooling rate, cooling temperature, sweating rate and concentration of the red water. The study highlights the effect of subcooling and growth rate on purity of the ice crystalline layers produced. After sweating, the COD value of crystalline ice layer was significantly reduced from 10,000 mg/L to below 20mg/L. Most organic contaminants were removed in sweating fractions of 0.5. Eventually, the red water was treated by layer crystallization combined with the sweating process.
authors.affiliation: Crystallization Process and Engineering Laboratory, Hanbat National University, San 16-1 Dukmyung-dong, Yuseong Daejeon 305-719, Republic of Korea.
authors.forename: Jeong-Hyeon
authors.initials: JH
authors.lastname: Jo
authors.affiliation: Crystallization Process and Engineering Laboratory, Hanbat National University, San 16-1 Dukmyung-dong, Yuseong Daejeon 305-719, Republic of Korea.
authors.forename: Takyi
authors.initials: T
authors.lastname: Ernest
authors.affiliation: Crystallization Process and Engineering Laboratory, Hanbat National University, San 16-1 Dukmyung-dong, Yuseong Daejeon 305-719, Republic of Korea. Electronic address: kjkim@hanbat.ac.kr.
authors.forename: Kwang-Joo
authors.initials: KJ
authors.lastname: Kim
mesh_terms: D003460:Crystallization; D007220:Industrial Waste; D014303:Trinitrotoluene; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D007220:Industrial Waste; D014303:Trinitrotoluene
keywords: COD; Growth rate; Ice crystallization; Sweating; TNT red water; Wastewater treatment