Yang Lei

Yang Lei
Southern University of Science and Technology | SUSTech · School of Environmental Science and Engineering

Doctor
One postdoctoral position on wastewater treatment and resource recovery is available.

About

25
Publications
10,254
Reads
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1,284
Citations
Introduction
Electrochemical (waste)water treatment and resources recovery; Phosphate recovery; Advanced oxidation process
Additional affiliations
December 2019 - December 2020
Wageningen University & Research
Position
  • PostDoc Position
February 2016 - December 2019
Wageningen University & Research
Position
  • PhD Student
February 2016 - December 2020
Wetsus
Position
  • Researcher

Publications

Publications (25)
Article
Full-text available
Phosphorus (P) is an essential element for the growth and reproduction of organisms. Unfortunately, the natural P cycle has been broken by the overexploitation of P ores and the associated discharge of P into water bodies, which may trigger the eutrophication of water bodies in the short term and possible P shortage soon. Consequently, technologies...
Article
Electrochemically mediated calcium phosphate precipitation (ECaPP) on the cathode offers a chemical-free process for phosphorus removal and recovery from wastewaters. However, this process is limited by the requirement of a large cathode surface area for precipitation. Here, we present a concept of overcoming this limiting factor by periodically sw...
Article
Decentralized treatment of human urine in sparsely populated regions could avoid the problem of sewage collection in traditionally centralized treatment schemes and simultaneously utilize the recovered N/P fertilizer in-situ to nurture gardens. Herein, an integrated electrochemical fixed bed packed with divided magnesite and carbon zones was constr...
Article
Phosphorus (P) is an irreplaceable element, playing a vital role in living organisms, yet has limited earth reserves. The possibility of P recovery from wastewaters by electrochemically-induced calcium phosphate precipitation (ECaPP) was demonstrated previously. The current study presents a novel scalable prototype consisting of a column-shaped ele...
Article
Full-text available
The recovery of phosphorus (P) from high-strength acidic waste streams with high salinity and organic loads is challenging. Here, we addressed this challenge with a recently developed electrochemical approach and compared it with the chemical precipitation method via NaOH dosing. The electrochemical process recovers nearly 90% of P (∼820 mg/L) from...
Book
Full-text available
In this thesis, we propose an innovative membrane-free electrochemical system, which can potentially achieve the removal and recovery of phosphorus from wastewaters in the form of recoverable calcium phosphate. Electrochemically induced calcium phosphate precipitation can be applied for a range of wastewater pHs, also for a more acidic pH. In real...
Article
Full-text available
Phosphonates are an important type of phosphorus-containing compounds and have possible eutrophication potential. Therefore, the removal of phosphonates from waste streams is as important as orthophosphate. Herein, we achieved simultaneously removal and recovery of phosphorus from nitrilotris (methylene phosphonic acid) (NTMP) using an electrochemi...
Article
Full-text available
Phosphorus removal and recovery from waste streams are crucial to prevent eutrophication and sustain fertilizer production. As has been shown in our previous papers, electrochemical treatment has the potential to achieve this goal. However, the adoption of electrochemical approach is limited by its high energy consumption. Here, we investigate the...
Article
Full-text available
Phosphorus (P) is a vital micro-nutrient element for all life forms. Typically, P can be extracted from phosphate rock. Unfortunately, the phosphate rock is a non-renewable resource with a limited reserve on the earth. High levels of P discharged to water bodies lead to eutrophication. Therefore, P needs to be removed and is preferably recovered as...
Article
Full-text available
Phosphorus (P) removal and recovery from waste streams is essential for a sustainable world. Here, we updated a previously developed abiotic electrochemical P recovery system to a bioelectrochemical system. The anode was inoculated with electroactive bacteria (electricigens) which are capable of oxidizing soluble organic substrates and releasing el...
Article
Full-text available
Calcium (Ca), magnesium (Mg), phosphate and (bi)carbonate are removed simultaneously in electrochemical recovery of phosphorus (P) from sewage. However, the fate of these ions is not completely understood yet. In this paper, through wastewater acidification and current density altering, we clarified the precipitation process and electrochemical int...
Article
Full-text available
Phosphorus (P) is an important, scarce and irreplaceable element and therefore its recovery and recycling are essential for the sustainability of modern world. We previously demonstrated the possibility of P recovery by electrochemical induced calcium phosphate precipitation. In this paper, we further investigated the influence of cell configuratio...
Article
Full-text available
Electrochemical wastewater treatment can induce calcium phosphate precipitation on the cathode surface. This provides a simple yet efficient way for extracting phosphorus from municipal wastewater without dosing chemicals. However, the precipitation of amorphous calcium phosphate (ACP) is accompanied by the precipitation of calcite (CaCO3) and bruc...
Article
Full-text available
To address the issues of eutrophication and the potential risk of phosphorus (P) shortage, it is essential to remove and recover P from P-containing streams to close this nutrient cycle. Electrochemical induced calcium phosphate (CaP) precipitation was shown to be an efficient method for P recovery. However, the influence of natural organic matter...
Article
Full-text available
Phosphorus (P) removal and recovery from sewage as calcium phosphate (CaP) by chemical precipitation is a widely used method. To avoid the addition of chemicals to increase the pH of the bulk solution and the need for a further separation step in conventional chemical precipitation process, we developed an electrochemical method, which can locally...
Article
Full-text available
Phosphorus (P) is an essential nutrient for living organisms and cannot be replaced or substituted. In this paper, we present a simple yet efficient membrane free electrochemical system for P removal and recovery as calcium phosphate (CaP). This method relies on in-situ formation of hydroxide ions by electro mediated water reduction at a titanium c...
Article
Full-text available
How to effectively activate oxidants like hydrogen peroxide (H2O2), peroxydisulfate (PDS) and peroxymonosulfate (PMS) is the focus of advanced oxidation processes (AOPs). In this study, we have found that PMS can directly decolorize cationic dyes without activation in a wide pH range (2.0–12.0). In addition, the presence of Cl− results in the forma...
Article
Full-text available
Magnetic CuO-Fe3O4 composite was fabricated by a simple hydrothermal method and characterized as a heterogeneous catalyst for phenol degradation. The effects of pH and bicarbonate ions on catalytic activity were extensively evaluated in view of the practical applications. The results indicated that an increase of solution pH and the presence of bic...
Article
Full-text available
In-situ chemical oxidation (ISCO) is an effective technology for the remediation of organic contaminated soils and groundwater, as it has high contaminants removal rates and offers the possibility of fast treatment. As an in-situ remediation technology, ISCO can be also used for minimizing contaminants dispersion and lowering the overall treatment...
Article
The Fe2+-activated persulfate (PS) oxidation of toluene was evaluated using single-factor tests and response surface methodology (RSM). The results indicated the degradation efficiency increased as the PS and Fe2+ concentrations increased, while excessive dosages inhibited the degradation efficiency. The pH had an insignificant effect on the degrad...

Questions

Questions (2)
Question
Methanol is usally added to comply with this, however, it has a great effect on the TOC of model pollutants.
Question
Does anyone have noticed that when you are adjusting the pH of some dye solution(say acid orange 7),especially when the pH over five,the colour of the solution will get dark ?

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Projects

Project (1)
Project
Understanding the influence of water constitutions on the efficiency of removal and the purity of the CaP. Develop a WWTP integrated electro precipitation system, for calcium phosphate removal and recovery.