Water and wastes

Disposable/ Single-use plastic has become more prevalent in production and consumption than other materials due to the advantages it may bring. However, wastes from SUP, especially plastic packages, account for nearly half of the global plastic wastes, causing potential environmental problems. Students are not only a big group but also an influential group in the process of reducing SUP in Vietnam.

12p visherylsandberg 18-05-2022 0 0   Download

This mini review identifies several thermogravimetric analysis (TGA)-based methods for the identification and quantification of different microplastics in both proof-of-concept studies and environmental samples, and highlights method-specific limitations associated with their application.

6p thebadguys 15-01-2022 10 0   Download

The bioaugmentation for removing the pharmaceuticals in municipal wastewater by Trametes versicolor and Aspergillus luchuensis using fluidized bed pelleted bioreactor was studied. To find the optimal performance of bioaugmentation by both fungi periodical biomass volume, 10 and 50 g per 1.25 L bioreactor, were tested.

11p thebadguys 15-01-2022 1 0   Download

The process resulted into a removal efficiency of 91.8 % of COD, 94.3 % in the case of BOD and 96.5 % in the case of turbidity after treatment of 30 minutes with the combination of Al (at cathode) and Fe (at anode) with mono-polar electrode connection in parallel.

8p thebadguys 15-01-2022 2 0   Download

Synchrotron-based X-ray absorption spectroscopy (XAS), specifically X-ray absorption near edge structure (XANES) spectroscopy, indicated the dominant species of As in soil and sediment samples was arsenate [As(V)], which is similar to the chemical form of As in the groundwaters of this region. No evidence of arsenite [As(III)] was identified in any of the solid-phase samples, including earthworm castings.

10p thebadguys 15-01-2022 2 0   Download

The crude enzyme extract of the strain was also characterized the activity with respect to temperature, pH, incubation period and two different enzyme substrates. High protease activity produced by Bacillus sp. B9 was observed at 36h of incubation at 45 oC with the initial pH of 9.0 by using gelatin as its substrate. Additionally, when using gelatin substrate, the protease activity was much higher than in the case of casein.

11p thebadguys 15-01-2022 3 0   Download

Marine debris assessment gives information about their quantity, type, and composition, which provides data to help with their management and control. The authors conducted two surveys at three beaches at Sam Son, Hai Tien, Hai Hoa) in Thanh Hoa province in March 2020 and July 2020, respectively, during an inactive and active tourism period. A total of 3,803 waste units were collected for assessment, of which plastic waste accounts for more than 98%.

12p vielonmusk 21-01-2022 17 0   Download

Nghi Son is an economic zone oriented to developing heavy industry and petrochemicals and has potential to become the most substantial economic zone in the North Central region. The zone is also one of the potential waste sources polluting Thanh Hoa coastal waters. Numeric modeling using Delft3D software package with different scenarios: Current status scenario, controlled discharge scenario, and incident scenario was developed to simulate states of some pollutants of organics and nutrients from the zone to Thanh Hoa coastal waters in different periods.

14p vielonmusk 21-01-2022 8 0   Download

Despite the increasing importance of species richness of blowfly fauna and their environmental, medical, and agricultural importance in the world they are poorly studied in Turkey. This study was carried out in 2014 and 2015 to determine the distribution, abundance, and species richness of blowfly species in Isparta Province of Turkey. A total of 15 species (10 from Calliphoridae, 4 from Polleniidae, and 1 from Rhiniidae) were identified from 13 different localities.

11p dolomite36 30-12-2021 0 0   Download

One of the successful strategies for the improvement of the sustainable food chain is to achieve economic success while improving environmental performance. For this point of view, water-soluble polysaccharides (WSP) were extracted from some agricultural by-products (potato peel (PoP), pea peel (PeP) and taro peel (TP) as Egyptian agro-waste products).

7p schindler 30-12-2021 3 0   Download

The excellent C.R. adsorption capacity of the a-Fe2O3 nanoplates was further confirmed by conducting experiments with a solution containing a mixture of dyes. Our findings indicate that the synthesized a-Fe2O3 nanoplates have a great potential in removing industrial waste, such as C.R. from polluted water.

9p meyerowitz 25-12-2021 0 0   Download

The solution of paracetamol and sildenafil (Penagra) was effectively sensed using modified carbon paste electrodes. LNPs showed a good photocatalytic activity (PCA) for Orange Red (OR) dye under UV light irradiation. These results indicate that the synthesized LNPs are a good candidate for displays, waste water treatment and for the use as electrochemical sensors.

9p meyerowitz 25-12-2021 2 0   Download

The following will be discussed in this unit: Tourism and the accommodation sector overview; the issue of water, energy and waste in the accommodation sector; implementing waste, water & energy minimisation actions; introduction to Green Lotus standards.

91p cucngoainhan5 08-12-2021 0 0   Download

By the end of the unit participants will be able to: Describe the meaning and importance of sustainability in food and beverage operation; implement environmental responsibility provisions in food and beverage including practicing low energy use, being water wise and minimising waste; explain importance of sourcing and providing good, sustainable food and beverage products; explain how to implement social responsibility in food and beverage operation.

73p cucngoainhan5 08-12-2021 0 0   Download

Objectives of the study: Assessing the situation of catfish farming in some areas of the Mekong Delta as a basis for proposing measures to manage waste from catfish ponds; the survey and analysis in catfish ponds to assess the composition and characteristics; assessing the pollutants load of waste water from catfish ponds; assessing the possibility of wastewater treatment from catfish ponds and benefits of environmental when using wastewater for irrigating paddy fields.

26p beloveinhouse10 28-11-2021 5 0   Download

The presence of heavy metals in environmental waters having an important place in the industrial waste is a major threat to viability. Heavy metals are transported to humans through the ecological cycle, damaging many tissues and organs. In recent years, agricultural and food waste can be used to remove heavy metals. At the present study, magnetically modified coffee grains which are alternative to conventional particle systems were prepared and heavy metal removal performances were investigated. The coffee grains used were magnetically modified by contact with water-based magnetic fluid.

10p tudichquannguyet 29-11-2021 2 0   Download

Liquid phase tandem Knoevenagel–Michael condensation of various aromatic and heteroaromatic aldehydes with barbituric acid or 2-thiobarbituric acid and malononitrile was studied in a one-pot three-component reaction. For the first time, TMDP was employed as a safe and efficient solvent and/or catalyst in the liquid and aqueous ethanol medium, respectively, for the practical and eco-friendly Knoevenagel–Michael condensation.

10p tudichquannguyet 29-11-2021 0 0   Download

Textile azo dyes are one of the pollutants in waste water that adversely affect human and environmental health. Removal of these chemicals from wastewater is important for eco-system and human health. In this study, Bi2 O3 nanoflakes and ZnO were synthesized by the co-precipitation method. Adsorption and photocatalytic degradation reactions were carried out to remove dyes (Victoria blue (VB) and Malachite green (MG)) from wastewater with the photocatalysts.

12p tudichquannguyet 29-11-2021 1 0   Download

The Government of the Balearic Islands created the program of “Eco-tax” in 2016 to control negative effects on the environment and natural resources and to find funds for costs of the pressure exercised by mass tourism, including generation of solid urban waste, CO 2 emissions and water consumption.

6p sotritu 18-09-2021 4 0   Download

The study focuses on solutions for cleaner production and waste generation prevention at sources by implementing good internal management, replacing raw materials; optimizing the production process; and on-site recovery and reuse. In addition, local authorities should select locations to build wastewater treatment systems, and implement communication solutions to raise awareness of local people on environmental and water protection.

12p retaliation 18-08-2021 6 0   Download