Zeng Yaqiong, Chen Xiaoqing, Zhu Jiaming, Long Dingbiao, Jian Yue, Tan Qiong, Wang Hao
Chongqing Academy of Animal Sciences, Chongqing 402460, China.
National Center of Technology Innovation for Pigs, Chongqing 402460, China.
Toxics. 2024 Jan 11;12(1):56. doi: 10.3390/toxics12010056.
has a positive effect on the removal of nutrients from pig farm biogas slurry. However, swine wastewater often contains heavy metal ions, such as Cu (II), which may have impacts on the nutrient removal performance of . Additionally, the heavy metal ions in wastewater can be adsorbed by microalgae. In this study, the stress effect of Cu (II) on the growth of , the Cu (II) removal by microalgae, and the effect of different concentrations of Cu (II) on the nutrient removal efficiency of in biogas slurries were explored. The results showed that the microalgae biomass of microalgae on the sixth day of the experiment was the highest in the treatment with a Cu (II) concentration of 0.5 mg/L, which was 30.1% higher than that of the 2.5 mg/L group. had higher removal efficiencies of Cu (II) at a Cu (II) concentration of 0.1~1.5 mg/L. The-OH, C=O, -COOH, and C-O groups on the surface of the algal cells play a significant role in the removal of Cu (II). The removal rates of COD, NH-N, TN, and TP by at a Cu (II) concentration of 0.5 mg/L were the highest, which were 89.0%, 53.7%, 69.6%, and 47.3%, respectively.
对猪场沼液中养分的去除有积极作用。然而，猪废水通常含有重金属离子，如铜（II），这可能会对……的养分去除性能产生影响。此外，废水中的重金属离子可被微藻吸附。本研究探讨了铜（II）对……生长的胁迫效应、微藻对铜（II）的去除以及不同浓度铜（II）对沼液中……养分去除效率的影响。结果表明，在铜（II）浓度为0.5 mg/L的处理组中，实验第6天微藻的生物量最高，比2.5 mg/L组高30.1%。微藻在铜（II）浓度为0.1~1.5 mg/L时对铜（II）有较高的去除效率。藻细胞表面的-OH、C=O、-COOH和C-O基团在铜（II）的去除中起重要作用。在铜（II）浓度为0.5 mg/L时，微藻对COD、NH-N、TN和TP的去除率最高，分别为89.0%、53.7%、69.6%和47.3%。
