scholarly journals Assessing the Degradation of Organics in Surgical Cotton Processing Wastewater by Mixed Microbial Culture and Photo-Catalysis

2019 ◽  
Vol 8 (4S2) ◽  
pp. 455-458
Keyword(s):  
Waste Water ◽  
Textile Industry ◽  
Oxygen Demand ◽  
Textile Wastewater ◽  
Catalytic Degradation ◽  
Nano Particles ◽  
Microbial Culture ◽  
Mixed Microbial Culture ◽  
Catalytic Method ◽  
Treatment Methods

Cotton bandage processing textile industry is the major manufacturing product of Rajapalayam town in south Tamilnadu, India. Processing of surgical cottons consumes significant amounts of water during manufacturing, creating high volumes of wastewater which cannot be discharged without proper treatment. The complete oxidation of organic pollutants in such waste water remains a significant environmental issue. This research investigates different treatment methods like biodegradation and photo catalytic degradation to identify the most efficient and effective approach to treat cotton bandage textile wastewater. Chemical Oxygen Demand (COD) analysis was carried out to quantify and observe the amount of oxidizable pollutant in the waste water with different treatment methods. In photo catalytic degradation process different semi-conductor metal oxide nano particles like Titanium dioxide (TiO2), Zinc Oxide (ZnO) and Bismuth Vanadium oxide (BiVO4) were used. Comparing the three nanoparticles; TiO2 proved to be the efficient one, which reduced the COD of the effluent significantly. For Biodegradation aerobic activated sludge was used to treat the cotton bandage textile waste water in along with mineral salt media. By comparing both photocatalytic degradation and biodegradation process, photo catalytic method was found to be efficient for treatment of organics in real cotton bandage processing effluent.

scholarly journals PENGOLAHAN PRIMER LIMBAH TEKSTIL DENGAN ELEKTROKOAGULASI

REAKTOR ◽  
2014 ◽  
Vol 15 (2) ◽  
pp. 73 ◽  
Author(s):  
Lieke Riadi ◽  
Whenny Ferydhiwati ◽  
Liok Dimas Sanjaya Loeman
Keyword(s):  
Waste Water ◽  
Chemical Oxygen Demand ◽  
Textile Industry ◽  
Oxygen Demand ◽  
Operation Time ◽  
Total Suspended Solid ◽  
Suspended Solid ◽  
Initial Ph ◽  
Textile Waste Water ◽  
Operation Cost

Limbah industri tekstil di area pinggir kota Surabaya mempunyai karakteristik perbandingan COD dan BOD = 5.57. Limbah jenis ini sulit untuk dibiodegradasi. Studi ini mempelajari tekonologi elektrokoagulasi untuk mengolah limbah tekstil dengan menurunkan intensitas warna, Total Suspended Solid (TSS) dan Chemical Oxygen Demand (COD). Percobaan batch pada suhu kamar dilakukan untuk mempelajari pengaruh pH, jarak elektroda terhadap penurunan warna,TSS dan COD dan membandingkan biaya operasinya jika menggunakan pengolahan kimia.Effisiensi penurunan tertinggi untuk warna (91.96%),  TSS (49.17%), dan COD (29.67%) terjadi pada pH awal 4.0 dan jarak elektroda 2 cm dengan  elektroda Al/Al. Waktu optimum penurunan intensitas warna dalah 10 menit. Laju penurunan COD adalah : -dC/dt = 0.0053 C +0.056 , dengan C adalah konsentrasi COD. Jumlah sludge yang dihasilkan daripengolahan elektrokoagulasi  3.4 % lebih kecil dibandingkan menggunakan bahan kimia. Biaya yang digunakan untuk pengolahan dengan elektrokoagulasi 52.35 % lebih murah dibandingkan jika menggunakan koagulasi dengan bahan kimia ( tawas). Kata kunci : elektrokoagulasi, penurunan warna, penurunan TSS, laju degradasi COD, imbah tekstil Abstract Waste water from textile industry which is located in one suburb of Surabaya city as characteristic which the ratio of COD to BOD was 5.57. This type of waste water is difficult to be biodegraded. This study investigated elektrokoagulasi technology to treat textile waste water by removing color, total suspended solid, and Chemical Oxygen Demand. Batch experiment at room temperature was carried out to study the effect of pH, electrode distance for color, TSS and COD removal. This study also tried to compare the operation cost between elektrokoagulasi and chemical processes. The best removal efficiencies by Al electrodes was 91.96 % for color, 49.17 % for TSS and 29.67 % for COD which were under initial pH 4.0 and electrodes distance 2 cm. The optimum operation time for color removal was  found 10 minutes.The COD degradation rate was - dC/dt = 0.0053 C +0.056, with C= COD concentration. Sludge result from elektrokoagulasi was 3.4 % less than that by chemical treatment.The operation cost for elektrokoagulasi is 52.35 % less than that for chemical coagulation. 

scholarly journals Removal of Dye and COD from Textile Wastewater Using AOP (UV/O3, UV/H2O2, O3/H2O2 and UV/H2O2/O3)

2018 ◽  
pp. 621-629 ◽  
Author(s):  
Mehrangiz Pourgholi ◽  
Reza Masoomi Jahandizi ◽  
Mohammadbagher Miranzadeh ◽  
Ommolbanin Hassan Beigi ◽  
Samaneh Dehghan
Keyword(s):  
Textile Industry ◽  
Dye Removal ◽  
Treatment Time ◽  
Reaction Times ◽  
Oxygen Demand ◽  
Advanced Oxidation ◽  
Textile Wastewater ◽  
Time Duration ◽  
Batch System ◽  
Industry Effluent

Introduction: Textile industry effluent is a complex sewage with chemical and color materials that is discharged into the environment and can cause serious problems. In this way using advanced oxidation methods and finding the best methods for removing color materials is necessary. An experimental method was done on Kashan textile industry effluent in laboratory scale and batch system. Material and Methods: Initially, optimal condition was obtained for O3 and H2O2 and followed by advanced oxidation methods (UV/O3, UV/H2O2, O3/H2O2 and UV/H2O2/O3) in different reaction times and pH on dye removal and COD (chemical oxygen demand) were determined. The results were compared with complex repetition method. Results: The results of this research showed that dye removal impact and COD based on the type of process and reaction time in UV/H2O2/O3 by 30 minute time duration, was the most effective method. UV/H2O2 in 10 minute time duration was the least effective method. COD and color removal, based on the process in UV/H2O2/O3 and pH = 6 was the most effective. The effect of UV/H2O2 and pH = 4 was the least efficient method on dye material removing. Results showed that the treatment time was effective on color removing (P < 0/001) statistically. Conclusion: It can be concluded that UV/H2O2/O3 was the most efficient on color removing process, compared to the others, due to co-incidence presence of strongly numerous oxidants and their aggravating effect through producing active hydroxyl radicals (OH˚).

scholarly journals Treatment of Textile Wastewater by CAS, MBR, and MBBR: A Comparative Study from Technical, Economic, and Environmental Perspectives

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1306
Author(s):  
Xuefei Yang ◽  
Víctor López-Grimau ◽  
Mercedes Vilaseca ◽  
Martí Crespi
Keyword(s):  
Textile Industry ◽  
Water Reuse ◽  
Oxygen Demand ◽  
Textile Wastewater ◽  
Economic Benefits ◽  
Biofilm Reactor ◽  
Efficient Technology ◽  
Conventional Activated Sludge ◽  
Large Water ◽  
Dyed Fabrics

In this study, three different biological methods—a conventional activated sludge (CAS) system, membrane bioreactor (MBR), and moving bed biofilm reactor (MBBR)—were investigated to treat textile wastewater from a local industry. The results showed that technically, MBR was the most efficient technology, of which the chemical oxygen demand (COD), total suspended solids (TSS), and color removal efficiency were 91%, 99.4%, and 80%, respectively, with a hydraulic retention time (HRT) of 1.3 days. MBBR, on the other hand, had a similar COD removal performance compared with CAS (82% vs. 83%) with halved HRT (1 day vs. 2 days) and 73% of TSS removed, while CAS had 66%. Economically, MBBR was a more attractive option for an industrial-scale plant since it saved 68.4% of the capital expenditures (CAPEX) and had the same operational expenditures (OPEX) as MBR. The MBBR system also had lower environmental impacts compared with CAS and MBR processes in the life cycle assessment (LCA) study, since it reduced the consumption of electricity and decolorizing agent with respect to CAS. According to the results of economic and LCA analyses, the water treated by the MBBR system was reused to make new dyeings because water reuse in the textile industry, which is a large water consumer, could achieve environmental and economic benefits. The quality of new dyed fabrics was within the acceptable limits of the textile industry.

Batch Kinetics and Effects of Process Parameters for Biodegradation of Reactive Black 5 in an Aerobic Mixed Microbial Culture

2013 ◽  
Vol 10 (2) ◽  
pp. 1 ◽  
Author(s):  
Jagannathan Krishnan ◽  
Siti Rabiatul Adawiyah Ibrahim
Keyword(s):  
Process Parameters ◽  
Kinetic Studies ◽  
Textile Wastewater ◽  
Inoculum Size ◽  
Microbial Culture ◽  
Reactive Black 5 ◽  
Mixed Microbial Culture ◽  
Treatment Tank ◽  
Textile Wastewater Treatment ◽  
Degradation Properties

Mixed microbial culture used in this study was developed from sludge that was taken from local textile wastewater treatment tank. Acclimatization process was performed before starting the biodegradation experiment to obtain a microbial culture with high degradation properties. Kinetic studies by the mixed microbial culture were determined quantitatively for the model pollutant, Reactive Black 5 (RB 5). By using Michaelis-Menten model, the constants were found to be 11.15 mg l-1 h-1 and 29.18 mg l-1 for Vm and Km respectively. The values of kinetic constants for Monod model were found to be 33.11 mg l-1 cell h-1 for the maximum specific microbial growth rate, µm and 86.62 mg l-1 for Monod constant, Ks. The effects of process parameters such as pH, inoculum size and initial dye concentration on the biodegradation of azo dye, RB 5 were systematically investigated. Maximum removal efficiencies observed in this study were 75% for pH 6, 100% for 15% inoculum concentration and 75% for 20 ppm of initial dye concentration.

scholarly journals Experimental Investigation of Chlorella vulgaris and Enterobacter sp. MN17 for Decolorization and Removal of Heavy Metals from Textile Wastewater

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3034
Author(s):  
Muhammad Mubashar ◽  
Muhammad Naveed ◽  
Adnan Mustafa ◽  
Sobia Ashraf ◽  
Khurram Shehzad Baig ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Chlorella Vulgaris ◽  
Textile Industry ◽  
Oxygen Demand ◽  
Industrial Effluents ◽  
Textile Wastewater ◽  
Removal Of Heavy Metals ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Coloring Agents

The present study evaluated the performance of microalgae Chlorella vulgaris in an Enterobacter sp. MN17-assisted textile industry wastewater treatment system for decolorization, removal of heavy metals (Cu, Cr, Pb, and Cd), and chemical oxygen demand (COD). Different dilutions (5, 10, and 20%) of wastewater were prepared to decrease the pollutant toxicity for culturing microalgae and bacteria. Reduction of color, COD, and metal contents by microalgal treatment of wastewater varied greatly, while removal efficiency (RE) was significantly enhanced when endophytic bacterial strain MN17 inoculum was applied. Most notable, results were found at a 5% dilution level by Enterobacter sp. MN17-inoculated C. vulgaris medium, as chromium (Cr), cadmium (Cd), copper (Cu), and lead (Pb) concentrations were decreased from 1.32 to 0.27 mg L−1 (79% decrease), 0.79–0.14 mg L−1 (93% decrease), 1.33–0.36 mg L−1 (72% decrease), and 1.2–0.25 mg L−1 (79% decrease), respectively. The values of COD and color were also significantly decreased by 74% and 70%, respectively, by a C. vulgaris–Enterobacter sp. MN17 consortium. The present investigation revealed that bacterial inoculation of microalgae significantly enhanced the removal of coloring agents and heavy metals from textile wastewater by stimulating the growth of algal biomass. This study manifested the usefulness of microalgae–bacterial mutualism for the remediation of heavy metals, COD, and color in industrial effluents. Microalgae consortia with growth promoting bacteria could be a breakthrough for better bioremediation and bioprocess economy. Thus, further studies are needed for successful integration of microalgae–plant growth promoting bacterial (PGPB) consortium for wastewater treatments.

Effects of phenol on sulfate reduction by mixed microbial culture: kinetics and bio-kinetics analysis

2017 ◽  
Vol 77 (4) ◽  
pp. 1079-1088 ◽  
Author(s):  
Mohit Prakash Mohanty ◽  
Bharati Brahmacharimayum ◽  
Pranab Kumar Ghosh
Keyword(s):  
Sulfate Reduction ◽  
Microbial Growth ◽  
Substrate Inhibition ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Kinetic Studies ◽  
Microbial Culture ◽  
Mixed Microbial Culture ◽  
Kinetic Coefficients ◽  
Institute Of Technology

Abstract Mixed microbial culture collected from the wastewater treatment plant of Indian Institute of Technology Guwahati (IITG) was further grown in anaerobic condition in presence of sulfate where lactate was added as a carbon source. Sulfate addition was increased stepwise up to 1,000 mg l−1 before phenol was added at increasing concentrations from 10 mg l−1 to 300 mg l−1. Kinetics of sulfate, phenol and chemical oxygen demand reduction were studied and experimental findings were analyzed using various bio-models to estimate the bio-kinetic coefficients. This is the first detailed report on kinetics and bio-kinetic studies of sulfate reduction in presence of phenol. Experimental results showed that there was no inhibition of sulfate reduction and microbial growth up to 100 mg l−1 phenol addition. However, inhibition to different degrees was observed at higher phenol addition. The experimental data of microbial growth and substrate consumption in presence of phenol fitted well to the Edward model (R2 = 0.85, root mean square error = 0.001011) with maximum specific growth rate = 0.052 h−1, substrate inhibition constant = 88.05 mg l−1 and half saturation constant = 58.22 mg l−1. The characteristics of the cultured microbes were determined through a series of analysis and microbial tests.

scholarly journals Investigation of Waste Water Quality Parameters Discharged from Textile Manufacturing Industries of Bangladesh

2018 ◽  
Vol 13 (2) ◽  
pp. 206-214 ◽  
Author(s):  
M. Ahasanur Rabbi ◽  
Jewel Hossen ◽  
Md. Mirja Sarwar ◽  
Pijush Kanti Roy ◽  
Sharmin Binte Shaheed ◽  
...  
Keyword(s):  
Waste Water ◽  
Textile Industry ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Total Suspended Solid ◽  
Environmental Problems ◽  
Effluent Treatment ◽  
Textile Processing ◽  
Textile Manufacturing ◽  
Ph Values

Textile manufacturing sector is the strongest root of the economy of Bangladesh while pollution by inappropriate management of waste water from textile dyeing industries is one of the major environmental problems. Textile processing employs an assortment of chemicals, contingent upon the idea of the crude materials and items. Environmental problems caused by the the textile industry are mainly the discharges of waste water. The wellspring of waste water contamination are the wet handling steps which incorporate measuring, desizing, scouring, bleaching, mercerizing, coloring, printing etc. The present study was aimed at physico-chemical evaluation of waste water discharged by some garments industries. While in some waste water high pH values have been recorded, the pH values of the waste water before and after treatments were found in between the standard range. The Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Dissolved Solid (TDS) and Total Suspended Solid (TSS) values for waste water before treatment were found to be much higher than the permissible limits. For some industries the BOD, COD, TDS and TSS values of the outlet water from effluent treatment plant (ETP) were also found beyond the standard limits.

scholarly journals Batch Kinetics and Effects of Process Parameters for Biodegradation of Reactive Black 5 in an Aerobic Mixed Microbial Culture

2013 ◽  
Vol 10 (2) ◽  
pp. 1
Author(s):  
Jagannathan Krishnan ◽  
Siti Rabiatul Adawiyah Ibrahim
Keyword(s):  
Process Parameters ◽  
Kinetic Studies ◽  
Textile Wastewater ◽  
Inoculum Size ◽  
Microbial Culture ◽  
Reactive Black 5 ◽  
Mixed Microbial Culture ◽  
Treatment Tank ◽  
Textile Wastewater Treatment ◽  
Degradation Properties

Mixed microbial culture used in this study was developed from sludge that was taken from local textile wastewater treatment tank. Acclimatization process was performed before starting the biodegradation experiment to obtain a microbial culture with high degradation properties. Kinetic studies by the mixed microbial culture were determined quantitatively for the model pollutant, Reactive Black 5 (RB 5). By using Michaelis-Menten model, the constants were found to be 11.15 mg L-1 h-1 and 29.18 mg L-1 for V m and Km respectively. The values of kinetic constants for Monod model were found to be 33.11 mg L-1 cell h-1 for the maximum specific microbial growth rate, µm and 86.62 mg L-1 for Monod constant, K5. The effects of process parameters such as pH, inoculum size and initial dye concentration on the biodegradation of azo dye, RB 5 were systematically investigated. Maximum removal efficiencies observed in this study were 75% for pH 6, I 00% for 15% inoculum concentration and 75% for 20 ppm of initial dye concentration. 

scholarly journals Kinetics of COD and Dye Removal for Waste Water from Textile Industry

2021 ◽  
Vol 9 (9) ◽  
pp. 237-244
Author(s):  
Heena Rani Bindala
Keyword(s):  
Waste Water ◽  
Water Pollution ◽  
Activated Carbon ◽  
Textile Industry ◽  
Dye Removal ◽  
Textile Wastewater ◽  
Electrochemical Treatment ◽  
Efficient Treatment ◽  
Treatment Technologies ◽  
Kinetics Of

Abstract: Water pollution poses serious threats to both the environment and the organisms that depend on their environment for survival. Due to the toxicity from dyes in textile wastewater, there is a dire need for the development of innovative and efficient treatment technologies. In this study treatability studies, using a electrochemical treatment (ECT) method followed by activated carbon (AC) based adsorption. ECT method was studied extensively for the treatment of reactive black dye. Moreover, to understand the practical applicability of ECTs, the findings were optimized for treatment of synthetic textile wastewater (STW).

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