TY - JOUR AU - Mihoubi, Nadia AU - Ferhat, Samira AU - Alouaoui, Redha AU - Ibrir, Abdellah AU - Nedjhioui, Mohamed AU - Badis, Abdelmalek PY - 2022/05/05 Y2 - 2024/03/28 TI - Optimization of the slaughterhouse water treatment rate by a new Marinobacter carbonoclasticus SF and its biosurfactant: Scientific paper JF - Journal of the Serbian Chemical Society JA - J. Serb. Chem. Soc. VL - 87 IS - 11 SE - Environmental Chemistry DO - 10.2298/JSC211029023M UR - https://shd-pub.org.rs/index.php/JSCS/article/view/11335 SP - 1327-1340 AB - <p>The aim of this study consists of the production of a bio-surfactant from a new bacterial strain, <em>Marinobacter hydrocarbono clasticus</em> SF (96.76 % simila­rity) 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 physicochemical 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<sup>-1</sup> 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 ratio of 5. The bio-surfactant produced is of glycolipid type with a low critical micellar con­cen­tration (<em>CMC</em>), 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.</p> ER -