Simultaneous Phosphate Removal and Power Generation by the Aluminum–Air Fuel Cell for Energy Self-Sufficient Electrocoagulation
Source abstract
Abstract
A self-powered electrocoagulation system with a single-chamber aluminum–air fuel cell was employed for phosphate removal in this study. Electricity production and aluminum hydroxides in solution were also investigated. When the NaCl concentration increased from 2 mmol/L to 10 mmol/L, the phosphate removal increased from 86.9% to 97.8% in 60 min. An electrolyte composed of 10 mmol/L of NaCl was shown to obtain a maximum power density generation of 265.7 mW/m2. When the initial solution pH ranged from 5.0 to 9.0, 98.5% phosphate removal and a maximum power density of 338.1 mW/m2 were obtained at pH 6.0. Phosphate was mainly removed by aluminum hydroxide adsorption. These results demonstrate that the aluminum–air fuel cell can be applied as electricity-producing electrocoagulation equipment. Aluminum–air fuel cells provide an alternative method to meet the goal of carbon neutrality in wastewater treatment compared with traditional energy-consuming electrocoagulation systems.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Phosphorus and nutrient management · Membrane-based Ion Separation Techniques · Membrane Separation Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Environmental Engineering, School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, China
Funding
National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities
References (47)
Show source-provided references
1. A comparative study of phosphorus removal using biopolymer from aerobic granular sludge: A factorial experimental evaluation10.1016/j.jece.2019.103541 ↗
2. Conversion of municipal wastewater-derived waste to an adsorbent for phosphorus recovery from secondary effluent10.1016/j.scitotenv.2019.135959 ↗
3. Phosphorus removal from domestic wastewater in electrocoagulation reactor using aluminium and iron plate hybrid anodes10.1016/j.ecoleng.2018.08.025 ↗
4. Current state of sewage treatment in China10.1016/j.watres.2014.08.014 ↗
5. Can electrocoagulation process be an appropriate technology for phosphorus removal from municipal wastewater?10.1016/j.scitotenv.2016.04.045 ↗
6. Effective removal of phosphorus from eutrophic water by using cement10.1016/j.envres.2020.109218 ↗
7. Efficient removal of phosphorus from turbid water using chemical sedimentation by FeCl3 in conjunction with a starch-based flocculant10.1016/j.watres.2019.115361 ↗
8. A comprehensive review of electrocoagulation for water treatment: Potentials and challenges10.1016/j.jenvman.2016.10.032 ↗
9. Electrocoagulation for removal of phosphate from aqueous solution: Statistical modeling and techno-economic study10.1016/j.jclepro.2019.118988 ↗
10. The removal of phosphates using electrocoagulation with Al−Mg anodes10.1016/j.jelechem.2019.05.043 ↗
11. A novel electrocoagulation electrode configuration for the removal of total organic carbon from primary treated municipal wastewater10.1007/s11356-020-08678-4 ↗
12. Applicability of the electrocoagulation process in treating real municipal wastewater containing pharmaceutical active compounds10.1016/j.jhazmat.2018.07.093 ↗
13. Effective phosphate removal for advanced water treatment using low energy, migration electric–field assisted electrocoagulation10.1016/j.watres.2018.03.037 ↗
14. Energy efficient electrocoagulation using an air-breathing cathode to remove nutrients from wastewater10.1016/j.cej.2016.02.004 ↗
15. A novel electro-coagulation-Fenton for energy efficient cyanobacteria and cyanotoxins removal without chemical addition10.1016/j.jhazmat.2018.11.058 ↗
16. Improved Electrocoagulation Reactor for Rapid Removal of Phosphate from Wastewater10.1021/acssuschemeng.6b01613 ↗
17. Electricity generation and recovery of iron hydroxides using a single chamber fuel cell with iron anode and air-cathode for electrocoagulation10.1016/j.apenergy.2015.09.041 ↗
18. Treatment of synthetic arsenate wastewater with iron-air fuel cell electrocoagulation to supply drinking water and electricity in remote areas10.1016/j.watres.2017.02.066 ↗
19. Tradeoff between groundwater arsenite removal efficiency and current production in the self-powered air cathode electrocoagulation with different oxygen reduction pathways10.1016/j.jhazmat.2018.05.048 ↗
20. Effects of supporting electrolytes in treatment of arsenate-containing wastewater with power generation by aluminumair fuel cell electrocoagulation10.1016/j.jiec.2017.08.031 ↗
21. Efficient reduction of Cr(VI) and immobilization of Cr driven by an iron-air fuel cell: Reaction mechanisms and electricity generation10.1016/j.chemosphere.2020.126730 ↗
22. Self-powered peroxi-coagulation for the efficient removal of p-arsanilic acid: PH-dependent shift in the contributions of peroxidation and electrocoagulation10.1016/j.cej.2019.123495 ↗
23. Energy-producing electro-flocculation for harvest of Dunaliella salina10.1016/j.biortech.2017.05.196 ↗
24. Optimum parameters for humic acid removal and power production by Al-air fuel cell electrocoagulation in synthetic wastewater10.2166/wst.2021.495 ↗
25. Electricity production and phosphorous recovery as struvite from synthetic wastewater using magnesium-air fuel cell electrocoagulation10.1016/j.watres.2018.01.003 ↗
26. Development of an effective operation system in a magnesium-air desalination cell for electricity production with nitrogen and phosphorus removal10.1016/j.desal.2022.116164 ↗
27. An iron-air fuel cell system towards concurrent phosphorus removal and resource recovery in the form of vivianite and energy generation in wastewater treatment: A sustainable technology regarding phosphorus10.1016/j.scitotenv.2021.148213 ↗
28. Recovering phosphate and energy from anaerobic sludge digested wastewater with iron-air fuel cells: Two-chamber cell versus one-chamber cell10.1016/j.scitotenv.2022.154034 ↗
29. A novel structure of scalable air-cathode without Nafion and Pt by rolling activated carbon and PTFE as catalyst layer in microbial fuel cells10.1016/j.watres.2012.08.005 ↗
30. Removal of phosphate from landscape water using an electrocoagulation process powered directly by photovoltaic solar modules10.1016/j.solmat.2013.05.027 ↗
31. An energy-efficient air-breathing cathode electrocoagulation approach for the treatment of arsenite in aquatic systems10.1016/j.jiec.2019.01.026 ↗
32. Cathodic dissolution in the electrocoagulation process using aluminium electrodes10.1039/a908248d ↗
33. Decolorization of Reactive Dye Solutions by Electrocoagulation Using Aluminum Electrodes10.1021/ie020951g ↗
34. Recent advances in phosphate removal from municipal wastewater by electrocoagulation process: A review10.1016/j.seppur.2022.122944 ↗
35. The effects of current density and phosphate concentration on phosphate removal from wastewater by electrocoagulation using aluminum and iron plate electrodes10.1016/j.seppur.2006.04.008 ↗
36. Water distillation tower: Experimental investigation, economic assessment, and performance prediction using optimized machine-learning model10.1016/j.jclepro.2023.135896 ↗
37. Low-cost bilayered structure for improving the performance of solar stills: Performance/cost analysis and water yield prediction using machine learning
38. Khoshaim, A.B., Moustafa, E.B., Bafakeeh, O.T., and Elsheikh, A.H. (2021). An Optimized Multilayer Perceptrons Model Using Grey Wolf Optimizer to Predict Mechanical and Microstructural Properties of Friction Stir Processed Aluminum Alloy Reinforced by Nanoparticles. Coatings, 11.10.3390/coatings11121476 ↗
39. Electrochemical technologies for the regeneration of urban wastewaters10.1016/j.electacta.2010.01.053 ↗
40. Modelling of anodic dissolution of pure aluminium in sodium chloride10.1016/j.electacta.2009.03.048 ↗
41. Anodic Dissolution of Pure Aluminum during Electrocoagulation Process: Influence of Supporting Electrolyte, Initial pH, and Current Density10.1021/ie201206d ↗
42. Orthophosphate and metaphosphate ion removal from aqueous solution using alum and aluminum hydroxide10.1016/j.jcis.2007.06.058 ↗
43. Electrochemical phosphates removal using iron and aluminium electrodes10.1016/j.cej.2011.05.080 ↗
44. Electrochemical methods for the removal of anionic contaminants from water—A review10.1016/j.seppur.2014.05.021 ↗
45. Characterization of flocs generated by preformed and in situ formed Al13 polymer10.1016/j.cej.2012.05.041 ↗
46. Treatment of domestic wastewater phosphate by electrocoagulation using Fe and Al electrodes: A comparative study10.1016/j.psep.2018.01.005 ↗
47. Speciation matching mechanisms between orthophosphate and aluminum species during advanced P removal process10.1016/j.scitotenv.2018.06.171 ↗