Effect of abscisic acid concentration on nutrient and antibiotics removal performance by different microalgae-based system treating bullfrog aquaculture wastewater
IF 4.5 2区 生物学Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Wenbo Chai , Zhengfang Wang , Ping Yao , Bing Zhao , Chunzhi Zhao , Bei Lu , Hui Zhang , Yongjun Zhao
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引用次数: 0
Abstract
This study systematically evaluated the performance of diverse microalgae-based systems supplemented with abscisic acid (ABA) in treating bullfrog aquaculture wastewater, focusing on nutrient (COD, TN, TP) and antibiotic removal. Four experimental setups were established: single culture of Chlorella vulgaris (Treatment 1), co-cultures of Chlorella vulgaris with Rhodopseudomonas sphaeroides (Treatment 2) or Curvularia moringae J-26 (Treatment 3), and a tri-culture system combining all three microorganisms (Treatment 4), each treated with ABA concentrations of 0, 0.01, 0.05, and 0.1 mg L−1. Results revealed that the Treatment 4 system with 0.05 mg L−1 ABA demonstrated superior efficiency, achieving removal rates of 90.51 % for chemical oxygen demand (COD), 88.72 % for total nitrogen (TN), and 92.51 % for total phosphorus (TP) over a 10-day treatment period. For six target antibiotics—including enrofloxacin (ENR), ciprofloxacin (CIP), sulfadiazine (SDZ), sulfamethoxazole (SMX), florfenicol (FFC), and doxycycline hydrochloride (DOX)—removal efficiencies ranged from 79.69 % (ENR) to 98.64 % (DOX), with photosensitive antibiotics like DOX showing the highest degradation. This study provides empirical evidence for the synergistic efficacy of ABA-regulated microalgae-bacteria-fungi systems, offering a sustainable and efficient strategy to address the complex pollution challenges in bullfrog aquaculture wastewater and facilitating the development of eco-friendly wastewater treatment technologies for the aquaculture industry.
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