Microalgal-based urea wastewater treatment with p-Hydroxybenzoic acid enhances resource recovery and mitigates biological risks from Bisphenol A

IF 11.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Water Research Pub Date : 2025-01-03 DOI:10.1016/j.watres.2024.123065

Zhenhao Zhao, Jingjing Jiang, Dandan Zhou, Shuangshi Dong

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Abstract

Efficient nutrient recovery from source-separated urine is vital for wastewater treatment, with microalgae as a promising solution. However, bisphenol A (BPA) in urine can hinder microalgal resource recovery and pose water quality risks. The role of plant hormones in enhancing microalgal growth and pollutant removal is known, but their impact on BPA-laden urine treatment is not well-studied. Here, we explored para-hydroxybenzoic acid (p-HBA) in Chlorella for treating diluted urine with BPA. p-HBA boosted photosynthesis and glycolysis, increasing pyruvate and ATP production and enhancing microalgal growth by 45.7 %. It also optimized nitrogen metabolism, raising urea and nitrogen consumption by 35 % and 65 %, respectively, and protein content by 23.1 %. Enhanced oxidase and transferase expression improves BPA degradation by 40 %. Additionally, ARGs and plasmid abundance decreased by 24.3 % and 37.5 %, respectively, reducing the risk of ARG dissemination. This study shows that p-HBA significantly improves the efficiency and safety of urine resource recovery, offering a promising strategy for sustainable wastewater treatment.

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对羟基苯甲酸微藻处理尿素废水提高了资源回收率，降低了双酚A的生物风险

从源分离尿液中有效地回收营养物对废水处理至关重要，微藻是一种很有前途的解决方案。然而，尿液中的双酚A （BPA）会阻碍微藻资源的恢复，并造成水质风险。植物激素在促进微藻生长和污染物去除方面的作用是已知的，但它们对含bpa尿液处理的影响尚未得到充分研究。在这里，我们探讨了小球藻中对羟基苯甲酸（p-HBA）对BPA稀释尿液的处理作用。p-HBA促进了光合作用和糖酵解，增加了丙酮酸和ATP的产生，促进了微藻生长45.7%。氮素代谢也得到优化，尿素和氮素消耗量分别提高35%和65%，蛋白质含量提高23.1%。增强氧化酶和转移酶的表达可使BPA降解提高40%。此外，ARG和质粒丰度分别下降了24.3%和37.5%，降低了ARG传播的风险。本研究表明，p-HBA显著提高了尿液资源回收的效率和安全性，为可持续废水处理提供了一种有前景的策略。

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.