Optimization of the slaughterhouse water treatment rate by a new Marinobacter carbonoclasticus SF and its biosurfactant

IF 1 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Journal of The Serbian Chemical Society Pub Date : 2022-01-01 DOI:10.2298/jsc211029023m

Nadia Mihoubi, S. Ferhat, R. Alouaoui, A. Ibrir, M. Nedjhioui, A. Badis

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Abstract

The aim of this study consists of the production of a bio-surfactant from a new bacterial strain, Marinobacter hydrocarbono clasticus SF (96.76 % simila-rity) isolated from soil contaminated by hydrocarbons in Hassi-Messaoud. (Southern Algeria) to treat liquid effluent from slaughterhouse water. The characteristics of organic matter biodegradation tests were discussed. Despite the high pollutant load and the unfavorable Physico-chemical composition of the effluent, the specific growth rate of the isolated strain after 10 days of incubation in the range of 0-30 g L-1 of NaCl was at neutral pH 7.4 and temperature of 45 ?C. The best bio-surfactant production yield was obtained after 72 h of incubation and under the optimal production conditions such as diesel as carbon source, ammonium chloride as nitrogen source, and a C/N ration of 5. The bio-surfactant produced is of glycolipid type with a low critical micellar concentration (CMC), good emulsifying power, and chemical and functional stability. Significant pollutant removal efficiency was obtained using the bacterial strain (up to 82 %) and the bio-surfactant (up to 96 %). Several anions, such as nitrates, phosphates, ammonium, and suspended solids, were measured.

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新型破碳海洋杆菌及其生物表面活性剂对屠宰场水处理率的优化

本研究的目的是利用从hassii - messaoud被碳氢化合物污染的土壤中分离到的一株新的细菌Marinobacter hydrocarbono clasticus SF(相似度为96.76%)生产生物表面活性剂。(阿尔及利亚南部)处理屠宰场水排出的液体。讨论了有机物生物降解试验的特点。在NaCl浓度为0 ~ 30 g L-1的条件下，在中性pH值为7.4、温度为45℃的条件下，培养10 d后，分离菌株的比生长率达到了较高的水平。在以柴油为碳源、氯化铵为氮源、C/N比为5的最佳生产条件下，培养72 h生物表面活性剂的产率最佳。所制得的生物表面活性剂为糖脂型，具有临界胶束浓度低、乳化性能好、化学稳定性和功能稳定性好等特点。该菌株对污染物的去除率高达82%，生物表面活性剂的去除率高达96%。测量了几种阴离子，如硝酸盐、磷酸盐、铵离子和悬浮物。

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来源期刊

Journal of The Serbian Chemical Society 化学-化学综合

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： The Journal of the Serbian Chemical Society -JSCS (formerly Glasnik Hemijskog društva Beograd) publishes articles original papers that have not been published previously, from the fields of fundamental and applied chemistry: Theoretical Chemistry, Organic Chemistry, Biochemistry and Biotechnology, Food Chemistry, Technology and Engineering, Inorganic Chemistry, Polymers, Analytical Chemistry, Physical Chemistry, Spectroscopy, Electrochemistry, Thermodynamics, Chemical Engineering, Textile Engineering, Materials, Ceramics, Metallurgy, Geochemistry, Environmental Chemistry, History of and Education in Chemistry.