Effect of salinity on enzymatic activities in a submerged fixed bed biofilm reactor for municipal sewage treatment
Effect of salinity on enzymatic activities in a submerged fixed bed biofilm reactor for municipal sewage treatment
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DOI：
10.1016/j.biortech.2012.06.083
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发表时间：
2012-10-01
影响因子：
11.4
通讯作者：
Gonzalez-Lopez, J.
中科院分区：
文献类型：
--
作者：
Cortes-Lorenzo, C.;Rodriguez-Diaz, M.;Gonzalez-Lopez, J.
在浸没式固定床生物反应器处理真实的城市污水中，研究了盐度对微生物水解酶活性（酸性磷酸酶、碱性磷酸酶、葡萄糖苷酶、蛋白酶和酯酶）的影响。盐（NaCl）对酶活性的影响进行了评估，在四个不同的实验中，NaCl的浓度为0，3.7，24.1和44.1 g/L，保持恒定的所有其他操作参数的生物反应器。结果表明，随着进水盐度的升高，酶活性降低，淹没式固定床生物反应器中有机物的生物转化率显著降低。进行冗余分析，以评估酶活性和物理化学参数之间的关系，在进水中分析。根据Monte Carlo排列检验的结果，盐度和采样日期显著解释酶活性的变化，表现出负相关。(C)2012爱思唯尔有限公司版权所有。
The effect of salinity on the hydrolytic enzymatic activities (acid phosphatase, alkaline phosphatase, glucosidase, protease and esterase) released by the microorganisms in a submerged fixed bed bioreactor for real urban wastewater treatment was investigated. The influence of salt (NaCl) on the enzymatic activities was evaluated in four different experiments with concentrations of NaCl of 0, 3.7, 24.1 and 44.1 g/L, remaining constant all other operating parameters of the bioreactor. The results show that enzymatic activities were reduced when the salinity was increased in the influent and consequently the biotransformation of organic matter in the submerged fixed bed bioreactor significantly decreased. A redundancy analysis was performed to evaluate the relationships between enzymatic activities and physic-chemical parameters analyzed in the influent. According to the results obtained with the Monte Carlo permutation test, salinity and sampling day significantly contributed to explain the variation of enzymatic activities, showing a negative correlation. (C) 2012 Elsevier Ltd. All rights reserved.