scholarly journals A numerical method of analyzing the composition of colored wastewater from dyeing plant

2021 ◽  
Author(s):  
M. Jędrzejczak ◽  
K. Wojciechowski
Keyword(s):  
Biological Treatment ◽  
Spectrophotometric Analysis ◽  
Visible Range ◽  
Synthetic Dyes ◽  
Normalization Procedure ◽  
Absorption Bands ◽  
Dyeing Process ◽  
Before And After ◽  
Colored Wastewater ◽  
Selection Of

AbstractStudies on the effectiveness of removing colored impurities from wastewater after dyeing process obtained from five dyeing plants located in the Lodz region in Poland were performed as well as a comparative spectrophotometric analysis of wastewater before and after treatment, in the visible range of absorption of 350–750 nm, attributed to dyes from different groups and with different structures of chromophoric systems. It was found that the method of calculating differences in the total areas under the curves of absorption from the range of 280–800 nm cannot determine precisely the effectiveness of color wastewater treatment. The method using a normalization procedure of the relevant spectra and the analysis of their partial differences proposed in this work allows to describe the efficiency of the process more precisely and indicates the class of synthetic dyes used in dyeing processes, giving the opportunity to the selection of appropriate procedures for their removal or disposal. By analysis of II-derivative of absorption bands, amount of colored components in the wastewater and the effects of physicochemical and biological treatment have been identified. This made it possible to determine the class of the colored impurities remaining in the wastewater.

scholarly journals Decolorization Of Indigosol Blue Dye Using Trametes versicolor F200 and Aspergillus sp

2020 ◽  
Vol 2 (2) ◽  
pp. 222
Author(s):  
Sunu Pertiwi ◽  
Ratna Stia Dewi ◽  
Ajeng Arum Sari
Keyword(s):  
Biological Treatment ◽  
Trametes Versicolor ◽  
Environmental Pollutants ◽  
Blue Dye ◽  
Synthetic Dyes ◽  
Color Intensity ◽  
Effective Technique ◽  
Dyeing Process ◽  
Fungal Isolates ◽  
Aspergillus Sp

The dyeing process of batik eventually produces much of wastewater. The difficult degradation and the dangers posed within the synthetic dyes are the main concerns in finding efficient wastewater treatment. Biological treatment has been known to be an effective technique of reducing or eliminating color intensity in wastewater. Fungi is one organism that can decompose many environmental pollutants. The aims of this research were to determine the ability of fungal isolates in decolorizing the synthetic dyes and analyzed which treatment has the highest decolorization percentage. Fungal isolates of Trametes versicolor F200 and Aspergillus sp. were used as a biological agent to decolorize of Indigosol Blue dye. The decolorization percentage was analyzed by spectrophotometer method. The result showed that T. versicolor F200 and Aspergillus sp. able to decolorize Indigosol Blue dye. The decolorization treatment of Indigosol Blue dyes using T. versicolor F200 showed the highest decolorization percentage reaching 97.21%.

scholarly journals A microfluidic device enabling drug resistance analysis of leukemia cells via coupled dielectrophoretic detection and impedimetric counting

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yağmur Demircan Yalçın ◽  
Taylan Berkin Töral ◽  
Sertan Sukas ◽  
Ender Yıldırım ◽  
Özge Zorlu ◽  
...  
Keyword(s):  
Drug Resistance ◽  
K562 Cells ◽  
Leukemia Cells ◽  
Drug Resistant ◽  
Wild Type ◽  
Gene Expressions ◽  
Before And After ◽  
The Difference ◽  
Selection Of ◽  
Resistant Cells

AbstractWe report the development of a lab-on-a-chip system, that facilitates coupled dielectrophoretic detection (DEP-D) and impedimetric counting (IM-C), for investigating drug resistance in K562 and CCRF-CEM leukemia cells without (immuno) labeling. Two IM-C units were placed upstream and downstream of the DEP-D unit for enumeration, respectively, before and after the cells were treated in DEP-D unit, where the difference in cell count gave the total number of trapped cells based on their DEP characteristics. Conductivity of the running buffer was matched the conductivity of cytoplasm of wild type K562 and CCRF-CEM cells. Results showed that DEP responses of drug resistant and wild type K562 cells were statistically discriminative (at p = 0.05 level) at 200 mS/m buffer conductivity and at 8.6 MHz working frequency of DEP-D unit. For CCRF-CEM cells, conductivity and frequency values were 160 mS/m and 6.2 MHz, respectively. Our approach enabled discrimination of resistant cells in a group by setting up a threshold provided by the conductivity of running buffer. Subsequent selection of drug resistant cells can be applied to investigate variations in gene expressions and occurrence of mutations related to drug resistance.

Laccase-catalyzed enzymatic dyeing of cotton fabrics

2021 ◽  
pp. 004051752110069
Author(s):  
Rıza Atav ◽  
Bürhan Buğdaycı ◽  
Ömer Bozkurt ◽  
Aylin Yıldız ◽  
Elçin Güneş ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Uv Protection ◽  
Infrared Analysis ◽  
Synthetic Dyes ◽  
Protection Factor ◽  
Knitted Fabrics ◽  
Reactive Dyeing ◽  
Dyeing Process ◽  
Laccase Enzyme ◽  
Color Reproducibility

As some synthetic dyes are regarded to be toxic, mutagenic and carcinogenic, the search for eco-friendly alternatives for the synthesis of dyes and coloration has gained importance. For this reason, this study focused on finding new eco-friendly alternatives for coloring cotton. 100% cotton knitted fabrics were subjected to enzymatic coloration using a commercial laccase enzyme and various precursors. After determining the colors, the effect of pH on the enzymatic dyeing process was investigated. Then the optimization of reaction conditions was also realized statistically for the precursors giving the best results in terms of color. With the aim of obtaining further improvements in color-yield values obtained in enzymatic dyeings, the effect of the pretreatment process and the use of ultrasound were also investigated. Furthermore, the reaction pathways in enzymatic coloration were explained and results were confirmed by means of Fourier Transformed Infrared analysis. As a result of experimental studies, red and lilac colors could be successfully obtained on cotton for the first time in the literature. In this way, the theoretical basis of enzymatic dye synthesis and dyeing of cotton was clarified comprehensively. Furthermore, technical (color reproducibility; washing, rubbing, light and perspiration-fastness values; and UV protection factor), economical (chemical, energy and water consumption required for dyeing (including aftertreatments) of 1 kg fabric) and ecological aspects of enzymatic dyeings were compared with reactive dyeing. According to the experimental results it was found that biological treatment alone was enough for wastewater of enzymatic coloring, while chemical treatment will also be needed in reactive dyeing wastewater. Furthermore, color reproducibility, evenness and UV protection properties of dyed samples were comparable with that of reactive dyeings. However, in terms of the fastness levels achieved, the enzymatic coloring was far behind the reactive dyeing.

Manufacturing of LSAW Pipes Using Hot Rolled Sheets for Sour-Service Application

2021 ◽  
Author(s):  
Rajesh Kumar Goyal ◽  
Mahesh Gajjar ◽  
Ashok Joshi ◽  
Anupkumar Tamhane
Keyword(s):  
Steel Mill ◽  
Corrosion Resistant ◽  
Behavioural Changes ◽  
H2s Corrosion ◽  
Before And After ◽  
Service Application ◽  
Hot Rolled ◽  
Sour Service ◽  
Geographical Locations ◽  
Selection Of

Abstract The exploration and transportation of fluids from corrosive fields or reserves demand corrosion-resistant pipelines. The pipelines for sour-service application demand higher resistance to H2S corrosion because of higher sulphur content observed in the geographical locations. The pipelines laid in the corrosive and marshy lands demand high wall thickness to allow for wall thinning due to corrosion. The linepipes manufactured using TMCP plates are widely accepted for sour-service applications. The use of cut-to-length sheets from hot rolled coils for the manufacturing of LSAW pipes is economical but having limited acceptance by the pipeline operators. Welspun took an initiative to develop the linepipes for an onshore sour-service application using API 5L X60MS grade cut-to-length sheets from TMCP hot rolled coils procured from an approved steel mill. The LSAW pipes of 24” OD × 14.27 mm WT were manufactured by the JCO-E press at Welspun Pipes Mill in Anjar-Gujarat-India. The experience of 24”OD × 14.30 mm WT, API 5L X60MO grade pipes manufacturing using TMCP plates procured from another approved steel mill, was used to decide factors such as alloy design, cleanliness, strength, DWTT, hardness, HIC, SSCC, CVN for the selection of cut-to-length sheets. This paper deals with sheet-to-pipe behavioural changes in properties before and after cold mechanical expansion. Wherever possible, the comparison was also made with plate-pipe behavioural changes in properties.

scholarly journals PENERAPAN METODE BERMAIN PERAN MAKRO TERHADAP KEMAMPUAN BERBICARA

Instruksional ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 9
Author(s):  
Nirwana Nirwana
Keyword(s):  
Statistical Analysis ◽  
Role Playing ◽  
Wilcoxon Test ◽  
Control Group ◽  
Observation Data ◽  
Group Data ◽  
Before And After ◽  
Group B ◽  
Nonparametric Statistical ◽  
Selection Of

Effect of  role playing macro methods on children's speaking ability in group B in Nurul Rohmah Bekasi. This research is motivated by the lack of ability to speak children. This is because the method used in the learning process is more likely to use conventional methods. The selection of methods to role playing macro so that children can be motivated and interested in learning and can stimulate the ability to speak children. The population in this study were all children of group B in kindergarten Nurul Rohmah while the study sample was B3 group 11 children for the experimental group and B1 group 11 children for the control group. Data collection techniques through test techniques, and observation. Data analysis techniques used were descriptive statistical analysis and nonparametric statistical analysis. Based on the results of the Wilcoxon test calculation, the calculated T value is 66 and T table 11 then the results obtained T count (66)> T table (11) H1 is accepted and Ho is rejected means that there is an effect of role playing macro  methods on children's speaking ability. Whereas the calculated Z value obtained is 2.93 and 1.645 table Z then the result of Z arithmetic (2.93)> Z table (1.645) H1 is accepted and Ho is rejected which means that there is an effect of role playing macro method on children's speaking ability. These results indicate that there is a change in the value of the child's speaking ability before and after getting learning based on the role playing macro method.

scholarly journals The effectiveness of integrating existing digital learning resources into classroom teaching – an evaluation of the learning achievement

2012 ◽  
Vol 8 (2) ◽  
pp. 150-161
Author(s):  
Svava Pétursdóttir
Keyword(s):  
Secondary Science ◽  
Learning Resources ◽  
Teacher Competence ◽  
Digital Learning ◽  
Science Classrooms ◽  
Before And After ◽  
Quasi Experimental ◽  
Digital Learning Resources ◽  
Selection Of ◽  
Better Than

This paper presents the results of an intervention study exploring the effectiveness of an implementation of a selection of digital learning resources (DLR) in lower secondary science classrooms. Eight teachers participated in a quasi-experimental intervention, teaching three different subjects with and without DLRs. The data presented are from pupil tests before and after the teaching combined with observation of lessons and interviews with both pupils and teachers. In two of the three subjects the groups using DLRs did slightly better than the comparison group. The results indicate that successful ICT based learning is just as dependent on teacher competence as the quality and features of the resources.

scholarly journals Application of Natural Dyes and Sodium Alginate From Sargassum Sp. Sea weed In Coloring Bima Woven Fabric

2020 ◽  
Vol 36 (05) ◽  
pp. 964-967
Author(s):  
Agrippina Wiraningtyan ◽  
Ruslan Ruslan ◽  
Putri Ayu Mutmainnah ◽  
Magfirah Perkasa
Keyword(s):  
Surface Structure ◽  
Sodium Alginate ◽  
Morphological Analysis ◽  
Woven Fabrics ◽  
Natural Dyes ◽  
Woven Fabric ◽  
Dyeing Process ◽  
Wave Numbers ◽  
Absorption Pattern ◽  
Before And After

This study aims to extract dye and alginate from seaweed Sargassum sp. as a dye paste in the coloring of Bima woven fabric. The concentration of sodium alginate used was 0%; 1%; 3% and 5%. The results showed that the absorbance value of the dye extract from seaweed Sargassum sp at maximum λ = 203 nm obtained A = 3.899. The effect of variations in the concentration of sodium alginate in the dye paste was determined by comparing the FTIR absorption pattern of Bima woven fabrics. Based on the FTIR absorption pattern data, it was found that a mixture of dye and sodium alginate of 3% had a stronger intensity, namely the wave numbers 3448.72 cm-1 and 1635 cm-1; 2900.94 cm-1; 2337.72 cm-1; 1381.03 cm-1 and 1064.71 cm-1. The results of the morphological analysis showed significant differences in surface structure on Bima woven fabrics before and after the dyeing process.

scholarly journals Characterization of Chicken Skin Yellowness and Exploration of Genes Involved in Skin Yellowness Deposition in Chicken

2021 ◽  
Vol 12 ◽  
Author(s):  
Jingwen Wu ◽  
Zetong Lin ◽  
Genghua Chen ◽  
Qingbin Luo ◽  
Qinghua Nie ◽  
...  
Keyword(s):  
Skin Color ◽  
Skin Pigmentation ◽  
Differentially Expressed ◽  
Economic Trait ◽  
Chicken Skin ◽  
Before And After ◽  
Skin Coloration ◽  
Insight Into ◽  
Selection Of

Skin color is an important economic trait in meat-type chickens. A uniform bright skin color can increase the sales value of chicken. Chickens with bright yellow skin are more popular in China, especially in the broiler market of South China. However, the skin color of chickens can vary because of differences in breeds, diet, health, and individual genetics. To obtain greater insight into the genetic factors associated with the process of skin pigmentation in chickens, we used a colorimeter and high-resolution skin photographs to measure and analyze the skin color of chickens. By analyzing 534 chickens of the same breed, age, and feed condition, we found that the yellowness values of the chickens varied within this population. A significant positive correlation was found between the cloacal skin yellowness values before and after slaughter, and the cloacal skin yellowness value of live chickens was positively correlated with the overall body skin yellowness value. Additionally, chicken skin yellowness exhibited low heritability, ranging from 0.07 to 0.27. Through RNA sequencing, 882 genes were found to be differentially expressed between the skin with the highest and lowest yellowness values. Some of these differentially expressed genes may play an important role in yellow pigment deposition in chicken skin, which included TLR2B, IYD, SMOC1, ALDH1A3, CYP11A1, FHL2, TECRL, ACACB, TYR, PMEL, and GPR143. In addition, we found that the expression and variations of the BCO2 gene, which is referred to as the yellow skin gene, cannot be used to estimate the skin yellowness value of chickens in this population. These data will help to further our understanding of chicken skin yellowness and might contribute to the selection of specific chicken strains with consistent skin coloration.

scholarly journals Fresh look on the urticaria problem.

2020 ◽  
Vol 17 (2) ◽  
pp. 33-43
Author(s):  
Alla O. Litovkina ◽  
Eugenii V. Smolnikov ◽  
Olga G. Elisyutina ◽  
Elena S. Fedenko
Keyword(s):  
Biological Treatment ◽  
First Line ◽  
Second Line Therapy ◽  
2Nd Generation ◽  
Line Therapy ◽  
H1 Antihistamines ◽  
Third Line Therapy ◽  
Third Line ◽  
Urticaria Treatment ◽  
Selection Of

Introduction. Nowadays urticaria is one of the most common diseases. According to the International Guidelines for the definition, classification, diagnosis and management of urticaria, 2nd-generation H1-antihistamines are recommended to be used as the first-line and second-line therapy. Omalizumab, a humanized monoclonal anti-IgE antibody, is assumed to be the third-line therapy in urticaria treatment. Summary. In this review we discuss the latest data on pathogenetic mechanisms of urticaria, focusing on the search of the new targets for the therapy. We represent the latest clinical trials of the new biological treatment for urticaria. Safety and efficiency of 4-folds higher therapeutical dose of the 2nd generation H1-antihistamines, and criteria for personalized selection of the antihistamines are discussed.

scholarly journals KOMPETENSI PETERNAK SAPI POTONG PERANAKAN ONGOLE DALAM PEMBUATAN KOMPOS (STUDI KASUS PADA KELOMPOK TERNAK MEKAR KECAMATAN DAGANGAN KABUPATEN MADIUN)

2018 ◽  
Vol 10 (3) ◽  
pp. 1
Author(s):  
Deha Purwoko ◽  
Bekti Nur Utami
Keyword(s):  
Manufacturing Process ◽  
Research Method ◽  
Organic Content ◽  
Compost Quality ◽  
Preparation Stage ◽  
Before And After ◽  
Descriptive Approach ◽  
Quantitative Descriptive ◽  
Selection Of

This research aims to describe the level of competence of farmers in composting, and to draft extension and try out the implementation of counseling about composting in group of livestock of Mekar. The research was conducted in sub-district Dagangan of Madiun Regency. Selection of livestock group is done by purposive that is the only group of livestock that have made compost that is group of livestock of Mekar which is located in Kepet village. The research method used is case study with quantitative descriptive approach with scoring. The population is 44 people, the sample is based on the census. The results showed that: 1) the level of competence of farmers in composting is classified with the details of the competence of the preparation stage is low, the competence of the manufacturing process is low, and the competence of the storage stage is classified; and 2) drafting the extension plan based on the target and the purpose of extension so that the breeder know, understand and able to increase the C-Organic content and C / N Ratio on the compost according to the standard. Success shows the improvement of compost quality before and after counseling in accordance with the purpose of counseling.   Keywords: competence of breeder, livestock group of Mekar, draft extension, composting, extension

Sign in / Sign up

Export Citation Format

Share Document