Effects of mixed LED light wavelengths and strigolactone analog concentrations on integral biogas upgrading and antibiotic removal from piggery wastewater by different microalgae-bacteria-fungi consortia

IF 4.6 2区生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2024-08-01 DOI:10.1016/j.algal.2024.103622

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Abstract

This study investigated the combined effects of mixed LED light wavelengths and varying concentrations of the strigolactone analog (GR24) on methane and antibiotic removal in swine wastewater using different microalgae co-culture techniques. Four treatments were implemented: Treatment 1 involved Chlorella vulgaris monocultures, Treatment 2 included C. vulgaris-activated sludge-Clonostachys rosea (C. rosea), Treatment 3 included C. vulgaris-Bacillus licheniformis-C. rosea, and Treatment 4 included C. vulgaris-S395-2-C. rosea. These treatments were designed to optimize conditions for antibiotic and CO₂ removal. Treatment 4 showed the highest growth rate (0.329 ± 0.030 d⁻¹), mean daily productivity (0.166 ± 0.015 g L⁻¹ d⁻¹), CA activity (66.25 ± 5.39), and photosynthesis under a red-to-blue light ratio of 5:5. Significant antibiotic removal rates were achieved: 98.77 ± 1.05 % for tetracycline hydrochloride, 93.74 ± 5.06 % for oxytetracycline hydrochloride, 62.44 ± 5.58 % for ciprofloxacin, 55.07 ± 4.97 % for norfloxacin, 70.39 ± 6.03 % for sulfadimethoxine, and 67.46 ± 6.25 % for sulfamethoxazole. A concentration of 10⁻⁹ M GR24 maximally enhanced antibiotic and CO₂ removal in Treatment 4. This study provided valuable insights into improving wastewater treatment practices and environmental management.

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混合 LED 光波长和绞股蓝内酯类似物浓度对不同微藻-细菌-真菌联合体从养猪场废水中提升整体沼气和去除抗生素的影响

本研究采用不同的微藻共培养技术，调查了混合 LED 光波长和不同浓度的绞股蓝内酯类似物 (GR24) 对猪废水中甲烷和抗生素去除的综合影响。共进行了四种处理：处理 1 包括小球藻单培养，处理 2 包括小球藻-活性污泥-蔷薇藻（C. rosea），处理 3 包括小球藻-地衣芽孢杆菌-蔷薇藻，处理 4 包括小球藻-S395-2-蔷薇藻。这些处理旨在优化抗生素和二氧化碳的去除条件。处理 4 显示出最高的生长率（0.329 ± 0.030 d-1）、平均日生产力（0.166 ± 0.015 g L-1 d-1）、CA 活性（66.25 ± 5.39）以及在红蓝光比为 5:5 的条件下的光合作用。抗生素去除率显著提高：盐酸四环素的去除率为 98.77 ± 1.05%，盐酸土霉素的去除率为 93.74 ± 5.06%，环丙沙星的去除率为 62.44 ± 5.58%，诺氟沙星的去除率为 55.07 ± 4.97%，磺胺二甲氧嘧啶的去除率为 70.39 ± 6.03%，磺胺甲噁唑的去除率为 67.46 ± 6.25%。在处理 4 中，浓度为 10-9 M 的 GR24 最大程度地提高了抗生素和二氧化碳的去除率。这项研究为改进废水处理方法和环境管理提供了宝贵的见解。

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来源期刊

Algal Research-Biomass Biofuels and Bioproducts BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

CiteScore

9.40

自引率

7.80%

发文量

332

期刊介绍： Algal Research is an international phycology journal covering all areas of emerging technologies in algae biology, biomass production, cultivation, harvesting, extraction, bioproducts, biorefinery, engineering, and econometrics. Algae is defined to include cyanobacteria, microalgae, and protists and symbionts of interest in biotechnology. The journal publishes original research and reviews for the following scope: algal biology, including but not exclusive to: phylogeny, biodiversity, molecular traits, metabolic regulation, and genetic engineering, algal cultivation, e.g. phototrophic systems, heterotrophic systems, and mixotrophic systems, algal harvesting and extraction systems, biotechnology to convert algal biomass and components into biofuels and bioproducts, e.g., nutraceuticals, pharmaceuticals, animal feed, plastics, etc. algal products and their economic assessment