当前位置: X-MOL 学术Environ. Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Effect of Fe3O4 nanoparticles on the performance of anaerobic digestion through electrochemical analysis
Environmental Technology ( IF 2.8 ) Pub Date : 2021-07-06 , DOI: 10.1080/09593330.2021.1946161
Lei Gong 1 , Tong Zuo 1 , Yi Qian 1 , Jianbo Liu 1 , Jun Zhou 1 , Haonan Zhang 1 , Jin Wang 1 , Ying Zhou 1 , Xiaoqi Yang 1 , Luyu Wang 1 , Qinwei Jia 1
Affiliation  

ABSTRACT

In view of the high cost and complex operation of the traditional chemical method for the determination of the anaerobic digestion (AD) process, this study investigated the feasibility of using electrochemistry analysis to determine the effect of Fe3O4 nanoparticles (NPs) on the AD process. The quantity of electric charge of Fe3O4 NPs modified graphite electrode in sodium acetate electrolyte was higher than that of graphite electrode. The addition of Fe3O4 NPs was beneficial to improve the electrochemical activity of the electrode. On this basis, enzymes and microorganisms were extracted from anaerobic reactors containing different concentrations of Fe3O4 NPs to make electrodes respectively to further investigate the effects of Fe3O4 NPs on enzyme and microbial activities in AD. The electrochemical analysis results of the enzyme electrodes and microbial electrodes showed that the quantity of electric charge produced by the group of 200 mg/L Fe3O4 NPs was the highest. The cumulative biogas production of 200 mg/L Fe3O4 NPs was 809 mL/g VS, and better than other groups. These results showed that 200 mg/L Fe3O4 NPs was the best dosage, and the electrochemical analysis has higher sensitivity in the AD detection.

Highlight

  1. Electrochemistry was used to investigate the activities of enzymes and microorganisms in anaerobic digestion.

  2. The effects of Fe3O4 nanoparticles on different stages of anaerobic digestion were analyzed by electrochemical method.

  3. The feasibility of electrochemical analysis was verified from the perspective of microbiology.



中文翻译:

电化学分析Fe3O4纳米颗粒对厌氧消化性能的影响

摘要

鉴于传统化学法测定厌氧消化(AD)工艺成本高、操作复杂,本研究探讨了采用电化学分析法测定Fe 3 O 4纳米颗粒(NPs)对厌氧消化(AD)工艺影响的可行性。广告流程。Fe 3 O 4 NPs改性石墨电极在乙酸钠电解液中的电荷量高于石墨电极。Fe 3 O 4 NPs的加入有利于提高电极的电化学活性。在此基础上,从含不同浓度Fe 3 O的厌氧反应器中提取酶和微生物4个NPs分别制作电极,进一步研究Fe 3 O 4 NPs对AD中酶和微生物活性的影响。酶电极和微生物电极的电化学分析结果表明,200 mg/L Fe 3 O 4 NPs组产生的电荷量最高。200 mg/L Fe 3 O 4 NPs的累积沼气产量为809 mL/g VS,优于其他组。这些结果表明,200 mg/L Fe 3 O 4 NPs是最佳用量,电化学分析在AD检测中具有更高的灵敏度。

强调

  1. 电化学用于研究厌氧消化中酶和微生物的活性。

  2. 采用电化学方法分析了Fe 3 O 4纳米颗粒对厌氧消化不同阶段的影响。

  3. 从微生物学的角度验证了电化学分析的可行性。

更新日期:2021-07-06
down
wechat
bug