The anode is considered to be a key factor to improve the single-chamber bioelectrochemical system's efficiency to degrade oily sludge in sediment while generating electricity. There are few studies on the effect of the anode structure on the performance of oily sludge MFCs systematically. In this paper, an oily sludge bioelectrical system was constructed using carbon felt and carbon plate as anode materials, adjusting the anode material arrangement as transverse and longitudinal, and using different anode materials from single to sextuple anodes. The results of this study showed that the rate of degradation of oily sludge was greater with carbon felt (17.04%) than with the carbon plate (13.11%), with transverse (23.61%) than with the longitudinal (19.82%) arrangement of anodes, and with sextuple anodes (33.72%) than with a single anode (25.26%) in the sediment microbial fuel cells (SMFCs). A similar trend was observed when the voltage, power density, and electromotive force (EMF) of SMFCs were estimated between the carbon felt and carbon plate, transverse and longitudinal arrangements, single and sextuple anodes. It is concluded that the proper adjustment of anode arrangements, using carbon felt as an anode material, and increasing the number of anodes to six may accelerate the rate of degradation of oily sludge in oily sludge sediment microbial fuel cells (SMFCs). Furthermore, the electricity generation performance was also improved.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9434775 | PMC |
http://dx.doi.org/10.1021/acsomega.2c02976 | DOI Listing |
Toxics
December 2024
School of Resource and Environmental Engineering, Shandong University of Technology, Zibo 255000, China.
The solid phase composition in oily sludge (OS) is a key factor affecting the oil-solid separation of OS. In this paper, the effects and mechanisms of solid-phase particle factors on the oil content of residue phase were investigated in order to improve the oil-solid separation efficiency. Flotation experiments were carried out on single-size sand and mixed-size sand OS consisting of three particle sizes at room temperature without adding flotation reagents.
View Article and Find Full Text PDFMaterials (Basel)
December 2024
Department of Resources Engineering, National Cheng Kung University, Tainan 701, Taiwan.
In the waste oil recycling industry, large amounts of oil-containing sludge are still generated, thus posing a resource depletion issue when disposed of or incinerated without energy recovery or residual oil utilization. In this work, chemical activation experiments using phosphoric acid (HPO) were performed at a low temperature (600 °C) for 30 min to produce porous carbon products. From the results of the pore property analysis, an increasing trend with an increasing impregnation ratio from 0.
View Article and Find Full Text PDFSci Total Environ
January 2025
Energy saving Research Institute, Anhui Jianzhu University, Hefei 230601, PR China; Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education, Anhui Jianzhu University, Hefei 230601, PR China. Electronic address:
Microalgal-bacterial biofilms have emerged as a promising approach for wastewater treatment. However, its potential to treat high-concentration ammonia‑nitrogen wastewater coupling with high-value fatty acid production remains unclear. Therefore, this study explored the efficiency of a microalgal-bacterial biofilm in treating high-concentration ammonia‑nitrogen wastewater and its ability to produce high-value fatty acids, with the activated sludge (bacteria) and microalgal-bacterial suspension as control.
View Article and Find Full Text PDFEnviron Monit Assess
December 2024
Department of Environmental Engineering, Gebze Technical University, Kocaeli, 41400, Turkey.
The improper disposal of olive mill wastewater (OMW) presents a significant environmental challenge for wastewater treatment plants (WWTPs) in the Gaza Strip. This study aims to evaluate the impact of OMW discharge on the operational efficiency of WWTPs, particularly during the olive harvesting season. To achieve this, samples were collected from both olive mills and WWTPs across the region and analyzed for key parameters such as chemical oxygen demand (COD), biological oxygen demand (BOD), phenols, oil and grease, and total suspended solids (TSS).
View Article and Find Full Text PDFInt J Mol Sci
November 2024
Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!