Aeromonas immobilized on chitosan for treating high-oil wastewater from kitchens.

Jin QU; Yinyan Chen; Ruojin Zhao; Yiyi LI; Peng Jin; Zhanwang Zheng

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Aeromonas immobilized on chitosan for treating high-oil wastewater from kitchens.

Author: Jin QU ¹ ; Yinyan CHEN ² ; Ruojin ZHAO ¹ ; Yiyi LI ² ; Peng JIN ³ ; Zhanwang ZHENG ¹
Author Information

1. School of Environmental and Resource, Zhejiang A&F University, Hangzhou 310000, Zhejiang, China.
2. Zhejiang Shuangliang Sunda Environment Co., Ltd, Hangzhou 310000, Zhejiang, China.
3. College of Agricultural and Food Sciences, Zhejiang A&F University, Hangzhou 310000, Zhejiang, China.
Publication Type:Journal Article
Keywords: Aeromonas; chitosan; immobilization; oil sewage; sewage treatment
MeSH: Aeromonas; Chitosan; Surface-Active Agents; Waste Water
From: Chinese Journal of Biotechnology 2021;37(2):615-624
CountryChina
Language:Chinese
Abstract: To effectively solve the serious impact of high oil in the kitchen wastewater on the downstream treatment process, an excellent oil-degrading strain Aeromonas allosaccarophila CY-01 was immobilized to prepare Chitosan-Aeromonas pellets (CH-CY01) by using chitosan as a carrier. Oil degradation condition and efficiency of CH-CY01 pellets were assessed. The growth of immobilized CH-CY01 was almost unaffected, and the maximum degradation rate of soybean oil was 89.7%. Especially at 0.5% NaCl concentration, oil degradation efficiency of CH-CY01 was increased by 20% compared with free cells. In the presence of a surfactant (sodium dodecylbenzene sulfonate) at 1 mg/L, the degradation efficiency of oil by CH-CY01 was increased by 40%. Moreover, using the high-oil catering wastewater as the substrate, more than 80% of the solid oil was degraded with 1% (V/V) CH-CY01 pellets treatment for 7 days, significantly higher than that of free cells. In summary, immobilized CH-CY01 significantly improved the efficiency of oil degradation.