Complete removal of COD from potato processing wastewater by co-cultivation of Haematococcus pluvialis and Gordonia terrae.

IF 2.1 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Letters in Applied Microbiology Pub Date : 2025-08-04 DOI:10.1093/lambio/ovaf108

Dayang Gao, Jie Lv, Xiangying Xing, Qinglin Dong, Jiahui Tian, Xuan Zhou

引用次数: 0

Abstract

For efficient removal of COD from the potato processing wastewater, the green alga Haematococcus pluvialis and the bacterium Gordonia terrae were co-cultivated in sterilized wastewater. Results showed that co-cultivation of H. pluvialis and G. terrae enhanced COD removal by promoting cell growth, with the highest removal efficiency (88.9%) on day 12 and removal rate (305.3 mg·L-1·d-1) being achieved at the optimal inoculation ratio of 40:1, increasing 298.6%, 353%, and 159.9%, and 227.6% compared to those of the pure culture of H. pluvialis (22.3%, 67.4 mg·L-1·d-1) and G. terrae (34.2%, 93.2 mg·L-1·d-1), respectively. Supplementation of NaNO3 at the lowest concentration of 0.2 g·L-1 further promoted COD removal efficiency to 100% on day 10. Hence, co-cultivation of H. pluvialis and G. terrae provides an efficient way for complete removal of COD from wastewaters with the suitable COD/nitrogen ratio (C/N) of 8.08.

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雨红球菌与地戈登菌共培养完全去除马铃薯加工废水中的COD。

为有效去除马铃薯加工废水中的COD，在消毒后的废水中共同培养雨生红球藻和地生戈登菌。结果表明，水蛭与地鼠共培养通过促进细胞生长来提高COD的去除率，在最佳接种比为40:1时，第12天的去除率最高（88.9%），去除率为305.3 mg·L-1·d-1，比水蛭纯培养（22.3%,67.4 mg·L-1·d-1）和地鼠纯培养（34.2%,93.2 mg·L-1·d-1）分别提高298.6%、353%和159.9%、227.6%。添加最低浓度0.2 g·L-1的NaNO3进一步提高了COD去除率，第10天达到100%。因此，雨水蛭与地水蛭共生可有效去除废水中的COD，适宜的COD/氮比（C/N）为8.08。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Letters in Applied Microbiology 工程技术-生物工程与应用微生物

CiteScore

4.40

自引率

4.20%

发文量

225

审稿时长

3.3 months

期刊介绍： Journal of & Letters in Applied Microbiology are two of the flagship research journals of the Society for Applied Microbiology (SfAM). For more than 75 years they have been publishing top quality research and reviews in the broad field of applied microbiology. The journals are provided to all SfAM members as well as having a global online readership totalling more than 500,000 downloads per year in more than 200 countries. Submitting authors can expect fast decision and publication times, averaging 33 days to first decision and 34 days from acceptance to online publication. There are no page charges.