CAJ | 학술논문

以脱色率及苯乳酸回收率为指标,研究了4种活性炭对发酵液吸附脱色的影响.通过单因素实验和正交实验对脱色条件进行优化,得到适宜的脱色条件为:活性炭添加质量浓度为0.015 g/L,初始pH值为6.5,温度90℃,脱色时间为30 min,在此条件下,活性炭AC1脱色苯乳酸发酵液的脱色率为90.5%,苯乳酸回收率为88.6%.对苯乳酸发酵液脱色体系的吸附等温方程进行了研究,其吸附过程以物理吸附为主,遵循Freundlich等温方程.
이탈색솔급분유산회수솔위지표,연구료4충활성탄대발효액흡부탈색적영향.통과단인소실험화정교실험대탈색조건진행우화,득도괄의적탈색조건위:활성탄첨가질량농도위0.015 g/L,초시pH치위6.5,온도90℃,탈색시간위30 min,재차조건하,활성탄AC1탈색분유산발효액적탈색솔위90.5%,분유산회수솔위88.6%.대분유산발효액탈색체계적흡부등온방정진행료연구,기흡부과정이물리흡부위주,준순Freundlich등온방정.
The decoloration effect of four kinds of activated carbon on phenyllactic acid fermentation broth was studied based on the decoloration rate and the recovery ratio of phenyllactic acid. The decoloration experiments were carried out by single factor experiments and orthogonal experiments. The optimal conditions for decoloration were determined as follows:1.5% activated carbon addition, initial pH 6.5, temperature 90℃, decoloration time 30 min. The results show that under these conditions, the decoloration rate of active carbon (AC1) reaches 90.5%, and phenyllactic acid recovery rote reaches 88.6%. The adsorption isotherm was also studied in the decoloration system of fermentation broth, and it was verified that the adsorption process follows the Freundlich equation.