scholarly journals Decolorization Assay of the Anthraquinone Dye Acid Blue 25 by Trichoderma asperellum LBKURCC1 Crude Laccase Extracts

2021 ◽  
Vol 2049 (1) ◽  
pp. 012046
Author(s):  
Raja Ifriadi ◽  
Miranti ◽  
Yuana Nurulita ◽  
Andi Dahliaty ◽  
Yanti ◽  
...  

Abstract One major concern of the textile industry waste is the health hazard imposed by textile dye waste effluents. Anthraquinone dyes are the second largest group of dyes produced and used annually worldwide, that is difficult to degrade naturally. Biological methods using enzymes for waste treatment is gaining popularity due to its eco-friendliness. Laccase is an enzyme with potential to degrade textile dyes, due to its wide ability to oxidize a wide range of substrates. The aim of this study was to evaluate the ability of T. asperellum LBKURCC1 laccase crude extract to decolorize the anthraquinone anionic dye Acid Blue 25 (AB25). A solution of 50 ppm AB25, pH 5.5, was treated with T. asperellum LBKURCC1 laccase crude extract and incubated at room temperature. Absorbance of the solution at 603 nm was measured daily and compared to buffer and heat denatured enzyme controls. No decolorization of AB25 was observed up to 6 days incubation in the enzyme treated samples, as well as the controls. Addition of 0.1 to 5 mM of 1-hydroxybenzotriazole hydrate (HBT) to the decolorization assay did not succeed in mediating the redox reaction of AB25 oxidation by the T. asperellum LBKURCC1 laccase.

2016 ◽  
Vol 73 (9) ◽  
pp. 2211-2221 ◽  
Author(s):  
Najoua Ben Douissa ◽  
Sonia Dridi-Dhaouadi ◽  
Mohamed Farouk Mhenni

Extracted cellulose from Posidonia oceanica was used as an adsorbent for removal of a cationic (Basic blue 9, BB) and anionic textile dye (Acid blue 25, AB) from aqueous solution in single dye system. Characterization of the extracted cellulose and extracted cellulose-dye systems were performed using several techniques such as Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, zeta potential and Boehm acid–base titration method. Adsorption tests showed that the extracted cellulose presented higher adsorption of BB than AB in single dye system, revealing that electrostatic interactions are responsible, in the first instance, for the dye–adsorbent interaction. In single dye systems, the extracted cellulose presented the maximum adsorption capacities of BB and AB at 0.955 mmol.g−1 and 0.370 mmol.g−1, respectively. Adsorption experiments of AB dye on extracted cellulose saturated by BB dye exhibited the release of the latter dye from the sorbent which lead to dye–dye interaction in aqueous solution due to electrostatic attraction between both species. Interaction of BB and AB dyes were investigated using spectrophotometric analysis and results demonstrated the formation of a molecular complex detected at wavelengths 510 and 705 nm when anionic (AB) and cationic (BB) dye were taken in equimolar proportions. The adsorption isotherm of AB, taking into account the dye–dye interaction was investigated and showed that BB dye was released proportionately by AB equilibrium concentration. It was also observed that AB adsorption is widely enhanced when the formation of the molecular complex is disadvantaged.


Gels ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 37 ◽  
Author(s):  
S M Fijul Kabir ◽  
Taslim Ur Rashid ◽  
Ioan I. Negulescu

In the present article, the commercial value of fish scales (FS), one of the most discarded fish wastes, has been identified by discovering their gelation capability. Fish scales of different physical forms were applied for the removal of dyes (acid red 1 (AR1), acid blue 45 (AB45), and acid yellow 127 (AY127)) from textile dye solution by absorption process. An astounding phenomenon, gelation of the treated solution, was noticed when it was aged for a certain period. The absorption of dye by FS was confirmed and quantified by FT-IR and UV-visible spectroscopy analyses, respectively. Process optimization revealed that pristine FS showed better gelation efficacy compared to pulverized FS. The gelation process was successful only when the dye solution contained acid and salt. As most of the textile effluents contain acids and salts in the discarded dye solution, this gelation process implies an obvious indication of the saving process and chemical cost in textile waste treatment. The jellified wastewater was characterized by exploring the rheological properties. Based on these analyses, potential application areas have been discussed.


2019 ◽  
Vol 26 (23) ◽  
pp. 24235-24246 ◽  
Author(s):  
Carolina Rosai Mendes ◽  
Guilherme Dilarri ◽  
Marcia Regina Stradioto ◽  
Adriano Uemura de Faria ◽  
Ederio Dino Bidoia ◽  
...  

2018 ◽  
Vol 67 ◽  
pp. 04017
Author(s):  
Meidina Sekar Nadisti ◽  
Nur Annisa ◽  
Eva Fathul Karamah ◽  
Nelson Saksono ◽  
Setijo Bismo

Increased production in the textile industry has the potential to result in high dye waste water. Various conventional methods to handle with textile waste treatment have been done, but still considered not yet or less effective. The AOP technology (Advanced Oxidation Processes) applied in this research is a rapid degradation technology in textile wastes with advanced oxidation process through the formation of hydroxyl radical (OH) which is considered to optimize the degradation process of textile dye waste. This study aims to evaluate the performance of ozonation methods and AOP (O3/UV/H2O2) in dye degradation of textile wastewater containing remazol blue compounds. Both configuration methods used are optimized in several parameters such as waste flow rate, ozone voltage and pH to obtain maximum remazol blue degradation. From this study, the higher percentage to remazol blue degradation is 99.99%, which is achieved by AOP method, with double air injection air flow rate of 10 L/min and 0.25 L/min liquid flow rate.


2018 ◽  
Vol 3 (1) ◽  
pp. 21-26
Author(s):  
Achmad Chusnun Ni’am ◽  
Jenny Caroline ◽  
M . Haris Afandi

The quality of environment especially the water bodies need to be improved on the pollution load of the household wastewater, which in general still does not have a liquid waste treatment plant. Electrocoagulation used in this research because of the simple and efficient method. The aim of study to know the ability of electrocoagulation method for reducing the concentration of COD and TSS in the wastewater from household textile industry.  The sample was taken from the residual wastewater of textile dye (sarung) with a liquid waste requirement of 36 liters. The data for the analysis is the initial and final parameters data were COD and TSS. The electrodes were used aluminum (Al) as an anode and iron (Fe) as a cathode. The research variations were used the number of electrodes and the voltage. The results showed that the treatment of 4 electrodes with 12volt voltage could reduce the COD concentration up to 76% and TSS up to 85% in household wastewater of household textile industry. Keywords: COD, electrocoagulation, liquid waste, TSS


2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Ali Mahmoud Muddathir ◽  
Ebtihal Abdalla M. Mohieldin ◽  
Tohru Mitsunaga

Abstract Background Dental caries and periodontal disease are the most common chronic infectious oral diseases in the world. Acacia nilotica was commonly known in Sudan as Garad or Sunt has a wide range of medicinal uses. In the present study, antibacterial activity of oral bacteria (Streptococcus sobrinus and Porphyromonas gingivalis), inhibitory activity against glucosyltransferase (GTF) enzyme and antioxidant activity were assayed for methanolic crude extract of A. nilotica bark and its fractions. Methods Methanoilc crude extract of A. nilotica bark was applied to a Sephadex LH-20 column and eluted with methanol, aqueous methanol, and finally aqueous acetone to obtain four fractions (Fr1- Fr4). Furthermore, the crude extract and fractions were subjected to analytical high performance liquid chromatography (HPLC). The crude extract and its fractions were assayed for antibacterial activity against S. sobrinus and P. gingivalis using a microplate dilution assay method to determine the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC), as well as GTF inhibition and antioxidant activity using ABTS radical scavenging method. Results Fractions (Fr1 and Fr2) exhibited MIC values of 0.3 mg/ml against the P. gingivalis. Additionally, Fr2 displayed MBC value of 1 mg/ml against two types of bacteria. Fr4 showed an especially potent GTF inhibitory activity with IC50 value of 3.9 μg/ml. Fr1 displayed the best antioxidant activity with IC50 value of 1.8 μg/ml. The main compound in Fr1 was identified as gallic acid, and Fr2 was mostly a mixture of gallic acid and methyl gallate. Conclusions The results obtained in this study provide some scientific rationale and justify the use of this plant for the treatment of dental diseases in traditional medicine. A. nilotica bark, besides their antibacterial potentiality and GTF inhibitory activity, it may be used as adjuvant antioxidants in mouthwashes. Further studies in the future are required to identify the rest of the active compounds.


2007 ◽  
Vol 55 (10) ◽  
pp. 145-153 ◽  
Author(s):  
T. Ölmez ◽  
I. Kabdaşlı ◽  
O. Tünay

In this study, the effects of the phosphonic acid based sequestering agent EDTMPA used in the textile dye baths on colour and organic matter removal by ozone oxidation was experimentally investigated. Procion Navy HEXL dyestuff that has been commonly used for the reactive dyeing of cellulose fibers was selected as the model component. The organic matter oxidation by ozone was determined to obey the pseudo-first order kinetics as they are treated singly or in combination. COD removal rates obtained from pseudo-first order reaction kinetics showed that oxidation of Navy HEXL alone (0.0947 L/min) was faster than that of EDTMPA (0.0171 L/min) and EDTMPA with dye (0.0155 L/min) at pH 3.0. It was also found that reaction rates of single EDTMPA removal and EDTMPA and dye mixture removal increased as the reaction pH was increased from 3.0 to 10.5.


2018 ◽  
Vol 250 ◽  
pp. 423-432 ◽  
Author(s):  
Najeh Tka ◽  
Mahjoub Jabli ◽  
Tawfik A. Saleh ◽  
Ghazwan Ali Salman

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