关键词: 蓝湿革, 三氯苯酚, 去除, 漂洗, 中和

Abstract: The removal of trichlorophenol in wetblue was investigated based on the rinsing and neutralizing operation. The results indicated that content of trichlorophenol in wetblue can be reduced during the rinsing operation with weak acids as formic acid or oxalic acid as rinsing agents, and the removal extent increases considerably with the rinsing dosage of degreasing agent. The usage of degreasing agent with 0.4% in rinsing operation can result in optimal removal extent. Neutralizing operation can further reduce the content of trichlorophenol. The higher pH of neutralization, the better removal extent of trichlorophenol. The usage of degreasing agent with 0.2% in neutralizing operation contributes to the removal extent obviously. Trichlorophenol can not be removed during the following retanning, dyeing and fatliqouring processes. The investigation proved the removal extent of trichlorophenol in wet-blue during the rinsing and neutralizing steps, and provided a strategy for leather industry to elimate the pollution of trichlorophenol in leather.

Key words: wet blue, trichlorophenol, rinsing, neutralizing