Influence of ozonation and biodegradation on toxicity of industrial textile wastewater

Paździor, Katarzyna; Wrębiak, Julita; Klepacz-Smółka, Anna; Gmurek, Marta; Bilińska, Lucyna; Kos, Lech; Sójka-Ledakowicz, Jadwiga; Ledakowicz, S.

doi:10.1016/j.jenvman.2016.06.055

Cited by 109 publications

(33 citation statements)

References 40 publications

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“…Bubble column reactors (BCR) used as multiphase reactors, also when filled with a bed, are frequently used in various branches of industry, as well as research, to describe a number of phenomena, particularly sewage treatment, fermentation, etc. [33][34][35]. These reactors have several advantages in terms of their operation and maintenance, e.g., high heat and mass exchange rates, compactness, and low operation and maintenance costs [36].…”

Section: Bubble Column Reactorsmentioning

confidence: 99%

The Effect of Hydraulic Conditions in Barbotage Reactors on Aeration Efficiency

Kujawiak

Makowska

Mazurkiewicz

2020

Water

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Barbotage reactors such as airlift reactors (ALR) and bubble column reactors (BCR), due to their two-phase flow systems, were investigated in many research papers. In their basic design variants, they are typically used to lift, mix, and aerate liquids, while, when equipped with additional elements in hybrid variants, their individual properties, i.e., lifting, mixing, and aeration of liquids, can significantly change with the same reactor geometry. The object of this study was to develop a hybrid barbotage reactor in various structural design variants. The structure consisted of a barbotage column of 50 mm in diameter, used to transport a water–air mixture outside the reactor (so-called external loop). The installation was additionally equipped with a nozzle in order to improve mixture aeration and circulation efficiency. The nozzle was mounted at various heights of the column pump segment. Additionally, the reactor was equipped with s moving bed in two variants (20% and 40% reactor capacity) in order to determine its effect on the mixture aeration and circulation conditions. Based on the measurement results, aeration curves were prepared for various structural design and column packing variants of the reactor. Properties of the two-phase mixture were determined for both parts—ALR and BCR. Technological and energy parameters of the aeration process were calculated, and the results obtained for the individual structural design variants were compared. It was found that, for the most advantageous design, in terms of aeration efficiency, the aeration nozzle should be placed in the mid-length of the pump segment of the barbotage column, irrespective of the hybrid reactor packing rate with the moving bed. The reactor packing with the moving bed resulted in a decreased mean water velocity in the reactor. For most analyzed structural design variants, the respective packing with the moving bed had no significant effect on aeration efficiency. Only for one structural design variant did the lack of packing significantly improve oxygen levels by as much as approximately 41%.

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Section: Bubble Column Reactorsmentioning

confidence: 99%

The Effect of Hydraulic Conditions in Barbotage Reactors on Aeration Efficiency

Kujawiak

Makowska

Mazurkiewicz

2020

Water

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“…Additionally, the variance of the predicted value ŷi is a variance of µi. It is assumed that errors εi are independent and identically distributed and assumed as Equation (6) εi ~ Ɲ(0, σ 2 ) [f(εi) = 0, variance(εi) = σ 2 ]…”

Section: Generalised Linear Modelmentioning

confidence: 99%

“…Ozone treatment is demonstrated as an effective method of degrading organic compounds from contaminated water [3,5,6]. The procedure is cost-effective and can efficiently breakdown most aliphatic and aromatic compounds [7].…”

Section: Introductionmentioning

confidence: 99%

Non-Parametric Regression Analysis of Diuron and Gabapentin Degradation in Lake Constance Water by Ozonation and Their Toxicity Assessment

Goswami

Jiang

Petri

2019

Water

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Ozone possesses high selectivity in the oxidation of organic pollutants. It actively reacts with electron donating participants which contain π bonds and non-protonated amines groups. The removal efficiency of organic pollutants hugely depends upon the pollutants’ initial concentration and amount of ozone supplied. This study was conducted at Zweckverband Bodensee-Wasserversorgung (Lake Constance Water Supply), Germany. The prime objective of the research was to observe the performance of diuron and gabapentin ozonation for low ozone doses, therefore meeting the real application requirements of the water treatment plant. Thereby, 1 mg·L−1 of the given organic pollutants was chosen for the treatment. The ozone with a dosage of ≈0.68–1.01 mg·L−1 was generated and homogeneously mixed into Lake Constance water in a semi-batch reactor system. The adequate aliquots of diuron/gabapentin were spiked into the homogenous matrix to acquire the desired initial concentration. The effect of ozone dose and reaction time on the degradation of diuron and gabapentin was investigated. Low ozone doses were sufficient for the complete degradation of diuron and gabapentin, although satisfactory total organic carbon (TOC) reduction was not achieved. Nonetheless, the toxicity from ozone treated effluents can be avoided by adjusting treatment conditions. Due to that degradation data obtained did not follow normalization, the non-parametric (non-normalised) data were analysed with a generalised linear regression model for Gaussian and Poisson distribution. Statistical analysis showed that the ozonation treatment of diuron/gabapentin followed the Gaussian model distribution and the degradation data obtained was proven significant using the Kruskal–Wallis test.

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“…The relationship with the natural environment is already present within the very first activities in textile and apparel value chains. It starts with harvesting and manufacturing textile fibers and these processes are essential to sustainability issues, however, each activity within the value chain may 'emit pollutants or use non-renewable energy' [8] (p. 1). It may seem that consumer awareness of sustainability issues and economic reasons are key drivers for enterprises to adopt best sustainable practices [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Incremental Organizational Change—A Case of the Textile and Apparel Industry

Patora-Wysocka

Sułkowski

2019

Sustainability

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The article is aimed at working out a comprehensive perspective on sustainable incremental change in organizations from a practice-based approach. That perspective presents everyday routine organizational practices as loci of sustainable organizational change. The research conducted reveals sustainability aspects that influence incremental change in the product development cycle in textile and apparel enterprises. The short life cycle of textile and apparel products challenges the multiplicity of sustainability aspects in that industry. The sequential procedure of mixing quantitative and qualitative methods was applied. A quantitative study was followed by qualitative research that was aimed at gaining an idiographic perspective. The statistical procedure was applied to determine the associative relationships between sustainable dynamizing factors and practice variability in textile and apparel enterprises. The influence factors were further explored as part of in-depth qualitative research. The qualitative research referred to three main aspects of sustainable practices at the initial production stage (sustainable water use), the last stages of the textile and garment life cycle (disposal and recycling of unwanted materials), and value (co)creation in the apparel industry. The results put emphasis on spontaneous vs. purposive activities in sustainable practice.

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Influence of ozonation and biodegradation on toxicity of industrial textile wastewater

Cited by 109 publications

References 40 publications

The Effect of Hydraulic Conditions in Barbotage Reactors on Aeration Efficiency

The Effect of Hydraulic Conditions in Barbotage Reactors on Aeration Efficiency

Non-Parametric Regression Analysis of Diuron and Gabapentin Degradation in Lake Constance Water by Ozonation and Their Toxicity Assessment

Sustainable Incremental Organizational Change—A Case of the Textile and Apparel Industry

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