Tran Le Luu

Vietnamese German Univerity · Environmental Engineering

An Anaerobic membrane bioreactor (AnMBR) was applied for treating wastewater of a seafood processing factory in Vietnam. However, Chemical Oxygen Demand (COD), Total Phosphorus (TP), and Total Nitrogen (TN) values of the AnMBR effluent were 250.43 mg/l, 19.96 mg/l, and 62.65 mg/l, respectively, and were about two times higher than the technical reg...

The Ba River in Vietnam has been facing pollution due to waste generation from agricultural and urban areas. This study focuses on evaluating the spatiotemporal variations in river water quality based on physicochemical characteristics and pesticide parameters for different seasons in 2022–2023. The results indicate that the concentrations of most...

Background Reducing energy consumption and greenhouse gas emissions is a crucial issue in the cassava starch processing industry. In this study, the integrated system combining livestock, cassava cultivation and cassava production in the same area leads to both a zero emission goal and economic efficiency, a typical example of an effective agro-ind...

Persistent organic pollutants (POPs) refer to various pollutants, including organochlorine pesticides (OCPs), industrial chemicals, and other unintended byproducts that are discharged through anthropogenic activities such as industrial processes, waste disposal, and agricultural activities, as well as natural sources such as forest fires and volcan...

In this study, we investigated the possibility of a photocatalytic system that uses graphene-quantum-dot (GQD)-deposited graphitic carbon nitride (g-C3N4) to treat tetracycline (TC) and other organic compounds generated from an in-situ-recirculatory-aquaculture-system (RAS)-like shrimp farming pond. GQDs were successfully deposited on the exfoliate...

Membrane capacitive deionization (MCDI) has shown many advances, however, its performance in combination with other treatment technologies has not been widely reported. In this study, a pilot-scale low-pressure reverse osmosis (LPRO) (FilmTec™ XLE-2540) with MCDI (CapDI© C17, Voltea) was developed and tested as a promising modular desalination syst...

In the last couple of years, response surface methodology (RSM) has been implemented to model as well as refine a range of waste treatment processes, specifically in water and wastewater treatment. RSM analyzes the outcomes of the variables as well as extract their values from the ones which provide the important values. RSM can be used as the opti...

Textile wastewater effluent includes high concentrations of pollutant such as dyes, detergents, and chemical auxiliaries that bring many negative impacts to humans and the environment. In this study, biologically textile wastewater effluent was first time treated using electrochemical oxidation catalyzed by persulfate on Ti/BDD and Ti/SnO<sub>2</su...

Textile wastewater contains many organic compounds and colors that affect aquatic life and human health when discharged into the environment. High coloration due to excess dyes entering the wastewater causes coloration to the receiving water stream, affects the photosynthesis process of aquatic species, and adversely affects the landscape. SnO2-bas...

In this study, the nitrogen conversion efficiency in the integrated catfish farming system was estimated based on the sludge and wastewater treatment processes. The nitrogen sources were recovered using the composting process (organic fertilizer). The wastewater treatment process was recovered using the aquatic plant uptake (water hyacinths). The s...

Cassava starch production is a key industrial production of Tay Ninh province, Vietnam. However, this production chain has also caused many negative impacts on the environment. This study applied the principles of circular economy to analyze the waste streams via linear programming method for cassava starch circular production chain towards zero wa...

In recent years, anaerobic membrane bioreactor (AnMBR) technology is emerging as an effective solution for wastewater treatment due to its outstanding advantages over conventional anaerobic treatment technology. In this chapter, the potential applications of AnMBR in industrial wastewater and municipal wastewater are summarized for the aspects of o...

Reducing energy consumption and green house gas emissions is a crucial issue in the cassava starch processing industry. In this study, the integrated system combining livestock, cassava cultivation and cassava production at the same area will lead to both zero emission goal and economic efficiency, a typical example of an effective agro-industrial...

Recently, electrochemical oxidation water treatment is a promising method to solve environmental pollution issues. During the electrochemical oxidation process, electrode material is a critical factor affecting the treatment efficiency. Sb-doped SnO2 electrodes are reported as superiors for the decomposition of organic matters from water through th...

Chlorine evolution now becomes important in many applications as chemical industry, polymer, pharmaceutical, and water treatment. In chlorine evolution reaction, the RuO2-based Dimensional Stable Anode is a technologically good and important electrode because of its unique characteristics such as high thermal and chemical stability, low resistivity...

Landfill leachate contains many complex components that have a negative impact on the environment when improperly discharged. This study is the first to treat landfill leachate (after continuous flow sequencing bed biofilm reactor (CF-SBBR) bio-digested) using electrocoagulation (EC) combined with persulfate (PS) on Al and Fe electrodes. The effect...

The economic’s development also bring urbanization and industrialization in many countries. However, many pollutants are also discharged into the environment, especially heavy metals (Zinc) seriously affects people's life and health as well as the water environment. This study reports on the preparation of activated carbon materials modified with H...

Landfill leachate contains many pollutants that have a negative effect on the environment when improperly discharged. Thus the treatment of landfill leachate is a crucial issue, especially in the bigger cities in developing countries. In this study, landfill leachate is treated using a continuous flow sequencing biofilm batch reactor (CF-SBBR) with...

Many biological methods are currently used to treat wastewaters, such as e.g. aerobic, anaerobic, sequencing batch reactors, biofilters. However, these technologies are limited by low nutrient removal efficiency, high energy and large area requirements. Hereby, the intermittent cycle extended aeration system (ICEAS), or continuous flow sequencing b...

This study investigated the effects of two local plants (Wedelia Trilobata-WT, Axonopus Compressus-AC), feeding patterns (continuous and intermittent), and types of bed media (sand and charcoal) on the treatment performance of shallow bed subsurface flow wetland roofs (WRs). Results showed that changing plant from AC into WT led to an increase in r...

Wastewater containing a high concentration of organic and emerging pollutants has been and remains a common and urgent issue, though many conventional methods are losing their effectiveness due to wastewater's chemical complexity. Electron beam (EB) is a common type of irradiation used in wastewater treatment, as it has the ability to create free r...

Macadamia nutshell is a new absorbent material for wastewater treatment. This work is a report on the synthesis of activated carbon as an absorbent materials prepared from macadamia nutshells using H2SO4 and K2CO3 as activating agents for methylene blue (MB) removal in water. The results show that MB adsorption capacity reaches its highest at 250.2...

Swine wastewater contains high concentrations of organic compounds, nutrients (nitrogen and phosphorus), heavy metals, and residual antibiotics, amongst others, that have negative impacts on the water environment. The main aim of this work was to remove nutrients from anaerobically digested swine wastewater using an intermittent cycle extended aera...

Currently, electrochemical oxidation is a very efficient method to treat many types of wastewaters. Under the effects of electrical current, toxic or non-biodegradable substances will be oxidized to become biodegradable or completely oxidized to CO2 and H2O. With the strengthening of environmental discharge legislations, tannery wastewater may have...

Leachate is known with high concentration of organic substances and nitrogen, which are extremely toxic to the environment. Recently, electrochemical oxidation has received much attention on account of its low cost, feasibility, environmental friendliness, and excellent in contaminants removal in wastewater. The present study reported the first tim...

The presence of hydrogen sulfide (H2S) in biogas negatively affects human health and corrodes metal. Therefore, the removal of H2S from biogas before using is an essential requirement in many cases. Recently, biotrickling filters (BTFs) have been widely applied to the treatment of H2S on both laboratory and industrial scales. However, BTFs method a...

The principle of subsurface arsenic removal (SAR) from groundwater is based on oxidation and adsorption reactions by infiltrating oxygen into the anoxic aquifer and the immobilization of arsenic (As) onto freshly formed iron (Fe) oxides. In this study, a pilot-scale plant for SAR has been subject to long term testing in the Mekong Delta, Vietnam. I...

Textile wastewater, especially when the dyeing section is involved, is remarkably polluted, characterized by a high value of chemical oxygen demand (COD) and color. The process to treat them currently is mostly biochemical and due to the heavy load, the process is remarkably expensive or needs a lot of steps. This research is launched in order to i...

Tannery wastewater is known to contain high concentrations of organic compounds, heavy metals, nitrogen, sulphur, chromium, and many other chemicals. Both aerobic and anaerobic biological approaches have been proven ineffective in the treatment of tannery wastewater due to the high salinity of and toxic chemicals contained within the medium. Electr...

This study investigated if biochar, a low-cost carbon-rich material, can be modified with reactive materials for decolorization of dyeing wastewater. Two types of rice husk biochars were produced by using different processes of gasification and pyrolysis in limited air condition. The biochars were first magnetized and then modified with nano-scale...

In the last two decades, electrochemical oxidation has been extensively studied for the treatment of wastewater. This technology consists of the direct and/or indirect oxidation of organic matter in wastewater at the anode or in the solution of an electrochemical device. In this study, a laboratory-scale experimental model was performed to evaluate...

Arsenic contamination in groundwater is a critical issue and one that raises great concern around the world as the cause of many negative health impacts on the human body, including internal and external cancers. There are many ways to remove or immobilize arsenic, including membrane technologies, adsorption, sand filtration, ion exchange, and capa...

A dimensionally stable anode based on the RuO2 electrocatalyst is an important electrode for generating chlorine. The RuO2 is well-known as an electrode material with high electrocatalytic performance and stability. In this study, sonoelectrodeposition is proposed to synthesize the RuO2 electrodes. The electrode obtained by this novel process shows...

RuO2 is a common active component of Dimensionally Stable Anodes (DSAs) for chlorine evolution that can be used in wastewater treatment systems. The recent improvement of chlorine evolution using nanostructures of RuO2 electrodes to increase the treatment efficiency and reduce the energy consumption of this process has received much attention. In t...

This paper reviews the current quality of groundwater in Vietnam. In Vietnam, groundwater is obtained primarily from tubewells, which have high concentrations of pollutants such as As, Fe, Mn, and NH4⁺. In the areas where groundwater tests were conducted, arsenic levels ranged from 0.1–3050 μg/L, which substantially exceed the standard of 10 μg/L w...

In dimensionally stable anodes, RuO2–TiO2 has emerged as one of the fundamental anode materials in terms of practical application because of its high stability and catalytic performance toward chlorine evolution. Nevertheless, high chlorine evolution efficiency is still required for an effective chlorine production process. In this study, high chlo...

RuO2–TiO2 electrode now becomes popular in the chlor-alkali industry because of high electrocatalytic and stability with chlorine and oxygen evolutions. Using alternative green method for preparation of RuO2–TiO2 electrode is necessary to reduce the cost, time, increase the electrocatalyst performance, stability, and environmental compatibility. In...

When fabricating a RuO2 electrode, the high electro-catalytic activity in chlorine evolution is considered as one of the most important factors. Thermal decomposition method carried out under various fabrication conditions including the types of solvents, precursors, and calcination times have led to the enhancement electro-catalytic activity of Ru...

Electrochemical water disinfection, which is based on anodic oxidants evolution such as chlorine, has received a great deal of attention due to its many advantages such as versatility, ease of operation, bactericidal effectiveness, and low cost, etc. The two most popular DSA electrodes are RuO2 and IrO2, as anodic materials. However, a conflicting...