Process water treatment

This paper reviews treatment methods for water reclamation, acid/base regeneration from wastewater and phosphorous recovery from municipal wastewater to achieve sustainable development. The treatment options are discussed and novel treatment processes are proposed based on a literature review.

8p vidoctorstrange 06-05-2023 2 2   Download

Ebook Endocrine disrupters in wastewater and sludge treatment processes: Part 2 presents the following chapters: Chapter 5: Fate and behavior of endocrine disrupters in sludge treatment and disposal, Chapter 6: Endocrine disrupters in receiving waters, Chapter 7: Endocrine disrupters in drinking water and water reuse, Chapter 8: Management strategies for endocrine disrupters in the aquatic environment.

151p runthenight08 12-04-2023 4 1   Download

The aluminum ion elimination approach proposed in this study is advantageous over the other existing methods using alum salts as it possesses high efficiency, relatively simple instrumentation and most importantly, it requires no filtering and thus no clogging will occur during the process.

8p viargus 03-03-2023 2 1   Download

In this study, effects of soaking time, ratio of rice to water, thermal treatments, different thickeners and storage temperature on gamma-amino butyric acid (GABA) content and quality characteristics of germinated brown rice milk (GBRM) were investigated.

10p vicedric 08-02-2023 1 1   Download

In this study, a composite material (ACS) was successfully synthesized from activated carbon (AC) derived from soybean curd and sludge from the supply water treatment process using FeCl3. Subsequently, the ACS was employed as a heterogeneous catalyst for the degradation of Paracetamol (PRC) in solutions under conditions of the Fenton process.

9p vicedric 08-02-2023 2 1   Download

The purpose of this research was to investigate the technological feasibility of biological filtration process for Mn control in Lorne WTP. This thesis consists of eight chapters. Project background and research objectives are described in Chapter 1. Chapter 2 presents an extensive literature review covering the nature of manganese, manganese analytical methods, manganese control methods, the nature of MOB and biological control of Mn in drinking water treatment. The materials and methods used throughout the experimental investigation for this study are described in Chapter 3.

119p runthenight04 02-02-2023 3 2   Download

Cellulose nanofibers (CNFs) from banana peels was evaluated as promising stabilizer for oil-in-water emulsions. CNFs were treated using ultrasound and high-pressure homogenizer. Changes on the size, crystallinity index and zeta potential of CNFs were associated with the intense effects of cavitation phenomenon and shear forces promoted by mechanical treatments.

10p vihermione 06-01-2023 2 2   Download

(BQ) This dictionary contains terms used in the fields of environmental engineering and environmental science, and the definitions provided relate to their use in an environmental context only. The commercial terms represent company brand names or trademarks, and have been italicized to differentiate them from the technical terms in general usage. The most unique feature of this book is the inclusion of more than 3000 trademarks and brand names. Many of these commercial terms for proprietary products or processes are so common or descriptive that they have fallen into general use.

194p runordie6 10-08-2022 9 1   Download

In the paper "Magnetic chitosan nanoparticles for removal of Cr(VI) from aqueous solution", magnetic chitosan nanoparticles were prepared, characterized and applied for the removal of Cr(VI) in the water solution. Afterwards, thermodynamic and kinetic aspects of the adsorption process were considered. The improved magnetic and high adsorption uptake properties are two main features of the synthesized nanoparticles that can be advantageously used in water treatment.

5p runordie3 27-06-2022 6 2   Download

In this paper, a terminal sliding control based on a new quasi-sliding mode function is designed to control a liquid level in two tanks interacting system with external disturbance and uncertainty. This system is always in great demand in the chemical industry, petrochemical refining, water treatment, power generation, construction material production, food processing, automatic liquid dispensing and replenishment devices.

10p visherylsandber 28-06-2022 10 3   Download

The rejects and membrane wash water were also treated in the bioreactor, resulted in complete removal of ClO4 ¯ through this approach. This is the first report where biotreatment is adopted as a pre- and post-treatment to membrane process for removing ClO4 ¯ , and this will find field application for treating ClO4 ¯ contaminated ground as well as surface water sources.

8p thebadguys 15-01-2022 7 2   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 8 0   Download

The aim of this work was to evaluate the treatment of Volatile Organic Compounds (VOCs) released during the painting and drying process of an industrial paint by absorbing them in a water curtain and then oxidizing them with ozone.

8p thebadguys 15-01-2022 7 0   Download

This study aims to explore the potential of layered double hydroxides (LDHs) materials for the treatment of contaminated waters by organic pollutants, using a combined dual process, namely adsorptionphotocatalysis. A series of LDHs of ZnCr-X where (X ¼ Cl, SO4 and CO3) were synthesized and characterized by several techniques such as DRX, FTIR, BET, TEM, and UV-Visible spectrophotometry.

9p meyerowitz 25-12-2021 16 0   Download

The use of ozone for the sanitization of fresh-cut produce has been postulated during all steps of the cold chain from harvest to consumption. However, little is known about its effects on the postharvest quality of minimally processed spinach. In the present study, the effects of different doses of ozone on the storage life and quality of minimally processed spinach were determined and compared with sodium hypochlorite.

11p hanthienngao 30-11-2021 5 0   Download

Ultrafiltration (UF) is investigated as a possible alternative to remove organic compounds from aqueous synthetic solution. This paper presents a comprehensive study towards a better understanding of phenolic compound retention mechanisms during UF processes. Thus, removal of phenol and resorcinol was studied using a polyethersulfone ultrafiltration (PES-UF) membrane. The influence of main operating conditions (feed concentration, transmembrane pressure, and pH) on the retention was evaluated.

13p tudichquannguyet 29-11-2021 5 0   Download

In this work, we are interested in the quaternization of poly(acrylamide-co-4-vinylpyridine) [AM7/VP10/0.1%/] by the methyl-tosylate CH3 TS. The obtained copolymer poly(acrylamide-co-(N-methyl-4-vinylpyridinium tosylate)) [AM7/VP10/0.1%/CTs] has been characterized by 1 H NMR and UV-Vis spectroscopy. The macromolecular weight was determined by size exclusion chromatography as well as by viscosity. With the aim of removing turbidity by coagulationflocculation from bentonite suspensions, the prepared copolymer was used as a flocculant.

11p tudichquannguyet 29-11-2021 11 0   Download

The present study addresses the removal of cadmium ions (Cd(II)) from aqueous solutions at a pH of 7.5 using zeolite-A activated by exposure to oxygen plasma. The activation process was performed over a wide range of plasma powers (10, 20, 30, and 40 W) and exposure times (30 to 360 s). Oxygen plasma cannot chemically modify zeolite to a considerable extent, but it can clean the surface, open blocked pores, and induce the formation of additional OH groups via exposure to humidity in ambient air. Therefore, Cd+2 ion removal is increased by approximately 10% with the plasma treatments.

13p tudichquannguyet 29-11-2021 6 0   Download

This paper aimed at implementing a treatment system for polluted water with textile dyes, starting with a photocatalytic decomposition process using sunlight as a source of energy and continuing with a bacterial biodegradation process, in order to reach degradation percentages higher than those obtained using only one of the processes mentioned above. When water treatment with the dye in the combined system was over, an acute ecotoxicity test was performed to make sure that toxic metabolites were not produced due to biodegradation.

14p tudichquannguyet 29-11-2021 7 0   Download

In this work, a system combining two advanced oxidation processes, namely electroFenton (EF) in which the hydroxyl radical OH is generated by reactions on the cathode and anodic oxidation (AO) in which OH is produced directly on the anode, was studied to evaluate the treatment of methylene blue (MB) dye in aqueous solution.

14p spiritedaway36 25-11-2021 9 0   Download