标题: Response of fungi-microalgae pellets to copper regulation in the removal of sulfonamides and release of dissolved organic matters

作者: Li, SX (Li, Shuangxi); Li, Z (Li, Zhuo); Liu, DY (Liu, Dongyang); Yin, ZH (Yin, Zhihong); Hu, D (Hu, Dan); Yu, YJ (Yu, Yunjiang); Li, ZH (Li, Zhaohua); Zhu, LD (Zhu, Liandong)

来源出版物: JOURNAL OF HAZARDOUS MATERIALS 卷: 434 文献号: 128932 DOI: 10.1016/j.jhazmat.2022.128932 出版年: JUL 15 2022

摘要: Both sulfonamides (SAs) and copper (Cu(II)) were frequently detected together in swine wastewater. In this study, the regulation of Cu(II) on SAs adsorption and release of dissolved organic matters (DOMs) by fungi-microalgae pellets (FM-pellets) were investigated. Aspergillus oryzae pellets were prepared for combination with Chlorella vulgaris and the optimal conditions were at agitation speed of 130 rpm, fungi to microalgae ratio of 10:1 and the combined time of 3 h with the highest combination efficiency of 98.65%. The results showed that adsorption was the main mechanism for SAs removal. FM-pellets exhibited a high SAs adsorption potential within 6 h, and the adsorption capacity of sulfamethazine (SMZ), sulfamonomethoxine (SMM) and sulfamethoxazole (SMX) was 1.07, 0.94 and 1.67 mg/g, respectively. Furthermore, the removal of SMX, SMZ and SMM was greatly promoted from 62.31% to 85.21%, 58.71-67.91% and 64.17-80.31%, respectively, under the presence of 2 mg/L Cu(II) through ion exchange and adsorption bridging. DOMs were analyzed by the parallel factor (PARAFAC) to demonstrate the response mechanism of FM-pellets to Cu(II). Protein-like substances and NADH in DOMs released by FM-pellets formed complexes with Cu(II) to alleviate the damage on the organism. These findings provide new insights into the mechanism and response of Cu(II) in the removal of SAs by FM-pellets.

作者关键词: Adsorption; Copper; Dissolved organic matters; Fungi-microalgae pellets; Sulfonamides

地址: [Li, Shuangxi; Li, Zhuo; Liu, Dongyang; Yin, Zhihong; Hu, Dan; Zhu, Liandong] Wuhan Univ, Sch Resources & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm B, Wuhan 430079, Peoples R China.

[Yu, Yunjiang] South China Inst Environm Sci, State Environm Protect Key Lab Environm Pollut Hl, Minist Ecol & Environm, Guangzhou 510655, Peoples R China.

[Li, Zhaohua] Hubei Univ, Fac Resources & Environm Sci, Wuhan 430062, Peoples R China.

通讯作者地址: Zhu, LD (通讯作者)，Wuhan Univ, Sch Resources & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm B, Wuhan 430079, Peoples R China.

电子邮件地址: ldzhu@whu.edu.cn

影响因子：14.224