scholarly journals Biodegradation of azo dyes and dyes present in textile wastewaters using Bacillus sp. az28, obtained from industrial effluents

2021 ◽  
Vol 45 (1) ◽  
pp. 117-122
Author(s):  
Mahmudul Hassan Suhag ◽  
KM Anis Ul Haque ◽  
Md Zobaidul Hossen ◽  
Abul Kalam Azad ◽  
Muhammad Younus
Keyword(s):  
Azo Dyes ◽  
Industrial Effluent ◽  
Industrial Effluents ◽  
Effluent Treatment ◽  
Textile Effluent ◽  
Bacillus Sp ◽  
Great Capacity ◽  
Decolorization Efficiency ◽  
Vis Spectroscopy ◽  
Dark Blue

The bacterial isolate Bacillus sp. AZ28, obtained from industrial effluent, demonstrates a great capacity to degrade various azo dyes (methyl orange (MO), magneson I (MI), novacron dark blue (NDB), and novacron red FN 3GF (NRF3)), and azo dye-containing textile effluent (TE). The degradation was evident by decolorization of dyes, and the decolorization efficiency of 84-95% was achieved within 14-72 h under optimum conditions, such as 37˚C, pH 7, inoculation size 8%, 1% glucose, and 1% beef extract. The extent of decolorization of individual dye was determined by UV–Vis spectroscopy, and products of biodegradation were analyzed by FTIR spectroscopy and TLC analyses. Chemical analysis showed that the COD and BOD values were significantly reduced after treatment. Thus, the biodegradation ability under mild conditions suggests that Bacillus sp. AZ28 has potential in textile effluent treatment. J. Bangladesh Acad. Sci. 45(1); 117-122: June 2021

scholarly journals Effluent Treatment Technologies and Cost Research

2019 ◽  
Vol 9 (1) ◽  
pp. 6752-6757
Keyword(s):  
Industrial Wastewater ◽  
Microbial Growth ◽  
Suspended Solids ◽  
Batch Reactor ◽  
Industrial Effluent ◽  
Oxygen Demand ◽  
Industrial Effluents ◽  
Effluent Treatment ◽  
Treatment Technologies ◽  
The Common

The Common Effluent Treatment Plants (CETP) minimizes the pollution from industrial effluents. This plant monitors the reduction of physical and biochemical parameters such as total suspended solids (TSS), biological oxygen demand (BOD), chemical oxygen demand (COD), dissolved oxygen (DO), heavy metals etc. The Sequential Batch Reactor (SBR), a variation of the ASP, combines all the treatment steps and processes into a single basin. An improved SBR process is Attached Growth Batch Reactor (AGBR) technology that provisions for microbial growth on the settled media/bed to treat the industrial wastewater using enzymes. This technology, when used to treat polluted river water, achieved about 90% of reduction of wastewater parameters. Hence the same is envisioned for the treatment of industrial effluent. In all the above methods the sludge settlement occurs. It contains biodegradable carbon content which could be used as feed for Biogas Digesters to produce Methane. The present study aims at examining the benefits of combining AGBR and Biogas Digester to implement the 3Rs (Reduce, Recycle, Reuse) [1]

scholarly journals Treatment of Common Effluent Treatment Plant Pollutant under Growing & Non-growing Condition of Biomass

2020 ◽  
pp. 15-21
Author(s):  
Shipra Jha ◽  
S. N. Dikshit
Keyword(s):  
Heavy Metals ◽  
Environmental Concern ◽  
Industrial Effluent ◽  
Treatment Plant ◽  
Industrial Effluents ◽  
Industrial Applications ◽  
Effluent Treatment ◽  
Effluent Treatment Plant ◽  
Living Tissues ◽  
Incomplete Treatment

Heavy metal pollution in wastewater has always been a serious environmental problem because heavy metals are not biodegradable and can be accumulated in living tissues. Copper is widely used in various important industrial applications. The increasing level of heavy metals in the aquatic system due to incomplete treatment of industrial wastewater by existing conventional methods is of environmental concern. Therefore, there has been an increasing interest in the possibility of using biological treatments. It is important to evaluate the performance of biomass with actual industrial effluent to ensure its field applicability. Hence the experiments were conducted with actual industrial effluents collected from Effluent Treatment Plant (ETP) and tannery industry.

scholarly journals Isolation and Screening of Azo Dyes Tolerant Bacteria in Semi-Scale Industrial Effluents

2018 ◽  
Vol 4 (2) ◽  
pp. 59-61
Author(s):  
V K Pandey ◽  
N Kumar ◽  
A K Bhardwaj
Keyword(s):  
Methyl Orange ◽  
Organic Compound ◽  
Azo Dyes ◽  
Azo Dye ◽  
Trypan Blue ◽  
Industrial Effluent ◽  
Industrial Effluents ◽  
Ex Situ ◽  
Industrial Processing

Dyes are organic compound have colouring properties of the object which used in industrial application. Huge effluent are releasing by industrial processing, where the microorganism may naturally adopted against particular problems. Present work focused over the selection and screening few best native candidates from diverse bacteria from semi-skilled dye industrial effluent. From eleven isolated bacterial colonies only two are found resistant against azo dyes (Methyl orange and Trypan blue). During the screening it observed that isolates of bacteria (VN1 and VN2) were tolerates and decolorize azo dye up to 500 ppm. These bacterial strain can be used efficientlyremoval of dyes contamina-tion from ex-situ and in-situ.

scholarly journals Bioremediation of Vanki River Water & Industrial Effluents using Calotropis procera Latex Exudate and its Comparative Analysis against Moringa oleifera Leaves Extract

2021 ◽  
Vol 9 (VI) ◽  
pp. 3902-3911
Author(s):  
Riya S. Barot
Keyword(s):  
Comparative Analysis ◽  
River Water ◽  
Moringa Oleifera ◽  
Industrial Effluent ◽  
Industrial Effluents ◽  
Total Coliform ◽  
Textile Effluent ◽  
Calotropis Procera ◽  
Ph Reduction ◽  
Moringa Oleifera Leaves

This study was carried out to check the effectiveness of Calotropis procera latex for bioremediation and to compare its efficacy with Moringa oleifera leaves extract. It was observed that considerable reduction in various physicochemical and bacteriological properties of the samples took place with Calotropis procera latex. After 1 hour of treatment itself, it carried out pH reduction of 11.11%, 30.00% and 12.50%, while Moringa oleifera leaves extract carried out 0.00%, 20.00% and 0.00% reduction and after 24 hours, turbidity was reduced to 90.00%, 61.87% and 65.36% with Calotropis procera latex and 75.00%, 60.43% and 32.03% with Moringa oleifera leaves extract for Vanki river water, Textile effluent and Paper & Pulp Industrial effluent, respectively. Vanki river water showed a reduction in TSS and TDS of 2000 mg/L and 34000 mg/L with Calotropis procera latex and 3000 mg/L and 46000 mg/L, respectively with Moringa oleifera leaves extract. With Calotropis procera latex, the COD and BOD values were 544 mg/L, 608 mg/L and 800 mg/L; and 0.04 mg/L, 0.240 mg/L and 0.012 mg/L for Vanki river water, Textile effluent and Paper & Pulp Industrial effluent, respectively. When treated with Moringa oleifera leaves extract, the COD values reduced to 864 mg/L, 800 mg/L and 896 mg/L and BOD values reduced to 0.004 mg/L, 0.251 mg/L and 0.022 mg/L, respectively. The total coliform count reduced to 130 MPN/100 ml, <1.8 MPN/100 ml and 7.8 MPN/100 ml for Vanki river water, Textile effluent and Paper & Pulp Industrial effluent, respectively after treatment with Calotropis procera latex. Thus, Calotropis procera showed better results in comparison with Moringa oleifera. So, it could be considered as the best alternative to prevent pollution.

The Effect of Metallic and Ionic Species on the Performance of a Biological Effluent Treatment System

1977 ◽  
Vol 12 (1) ◽  
pp. 191-212
Author(s):  
B. Volesky ◽  
Q. Samak ◽  
P. Waller
Keyword(s):  
Activated Sludge ◽  
Inorganic Ions ◽  
Industrial Effluents ◽  
Original Data ◽  
Ionic Species ◽  
Threshold Concentration ◽  
Effluent Treatment ◽  
Organic Load ◽  
Metallic Ions ◽  
Activated Sludge Systems

Abstract Review of the available results appearing in the recent literature is presented focusing particularly upon the effects of metallic ions such as Cr, Cu, Zn, Cd, Hg, V, Zn, Ni and Co. Some original data involving the effects of Na are presented and discussed. Development of parameters used in evaluating the influence of toxic or inhibitory species on the mixed microbial population of an activated sludge system is of crucial importance and different techniques employed such as BOD-COD-TOC-removal rates, Oxygen Uptake Rate, and others are discussed, showing relative inadequacy of currently applied assays. From the data available, certain trends can be discerned. There is a definite threshold concentration for each metallic ion, depending on the organic load of the feed. In the order of increasing toxicity to activated sludge systems reflected in lower BOD removals the following metals have been listed as inhibiting factors at concentrations starting from 1 ppm applied on a continuous basis: hexavalent chromium, cobalt, zinc, cadmium, trivalent chromium, copper and nickel. Metals in combination have not been reported to exhibit any significantly different effects as compared to those observed with individually introduced metallic ions. Tolerance of some activated sludge systems to shock loadings by various inorganic ions and metals is reviewed. The conclusions are of particular importance for estimating the performance of biox systems handling industrial effluents which are likely to contain toxic components of inorganic or metallic nature.

Use of a sequencing batch biofilter for degradation of azo dyes (acids and bases)

2000 ◽  
Vol 42 (5-6) ◽  
pp. 329-336 ◽  
Author(s):  
M. Quezada ◽  
I. Linares ◽  
G. Buitrón
Keyword(s):  
Azo Dyes ◽  
Azo Dye ◽  
Degradation Rate ◽  
Removal Rate ◽  
Textile Effluent ◽  
Colour Removal ◽  
Substrate Degradation ◽  
Acids And Bases ◽  
Removal Efficiencies ◽  
Basic Red 46

The degradation of azo dyes in an aerobic biofilter operated in an SBR system was studied. The azo dyes studied were Acid Red 151 and a textile effluent containing basic dyes (Basic Blue 41, Basic Red 46 and 16 and Basic Yellow 28 and 19). In the case of Acid Red 151 a maximal substrate degradation rate of 288 mg AR 151/lliquid·d was obtained and degradation efficiencies were between 60 and 99%. Mineralization studies showed that 73% (as carbon) of the initial azo dye was transformed to CO2 by the consortia. The textile effluent was efficiently biodegraded by the reactor. A maximal removal rate of 2.3 kg COD/lliquid·d was obtained with removal efficiencies (as COD) varying from 76 to 97%. In all the cycles the system presented 80% of colour removal.

scholarly journals Sugarcane bagasse and its potential use for the textile effluent treatment

DYNA ◽  
2017 ◽  
Vol 84 (203) ◽  
pp. 291-297 ◽  
Author(s):  
Juan Carlos Cueva-Orjuela ◽  
Angelina Del Socorro Hormaza-Anaguano ◽  
Andrés Merino-Restrepo
Keyword(s):  
Sugarcane Bagasse ◽  
Effluent Treatment ◽  
Textile Effluent ◽  
Potential Use

En Colombia, la caña de azúcar representa el segundo cultivo con mayor extensión. Se estima que a partir de los ingenios azucareros se producen aproximadamente 6 millones de toneladas de bagazo de caña de azúcar, BCA, de los cuales 5 millones son utilizados ineficientemente para la quema de calderas. El BCA está compuesto principalmente por celulosa, hemicelulosa y lignina, posibilitando su uso como un potencial adsorbente. En particular, en esta investigación se evaluó la viabilidad del BCA para la remoción del rojo básico 46, RB46, en solución acuosa. El efecto de factores tales como el punto de carga cero, pH de la solución, tamaño de partícula, dosificación del adsorbente, concentración inicial del colorante, tiempo de contacto y fuerza iónica fueron evaluados a través de un diseño estadístico. Se obtuvo una remoción del 86.4% y la posterior optimización del proceso, a través un diseño de superficie de respuesta, permitió alcanzar una adsorción máxima del 95.0%. Estos resultados sugieren que el BCA representa una alternativa promisoria de un adsorbente no convencional que puede ser aprovechado para el tratamiento de efluentes coloreados.

Soft Drinks Industry Wastewater Treatment

1992 ◽  
Vol 25 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Larbi Tebai ◽  
Ioannis Hadjivassilis
Keyword(s):  
Biological Treatment ◽  
Industrial Effluent ◽  
Treatment Plant ◽  
Soft Drinks ◽  
Effluent Treatment ◽  
Production Lines ◽  
Effluent Treatment Plant ◽  
Industrial Effluent Treatment ◽  
Effluent Characteristics ◽  
Industry Wastewater

Soft drinks industry wastewater from various production lines is discharged into the Industrial Effluent Treatment Plant. The traditional coagulation/flocculation method as first step, followed by biological treatment as second step, has been adopted for treating the soft drinks industry wastewaters. The performance of the plant has been evaluated. It has been found that the effluent characteristics are in most cases in correspondence with the requested standards for discharging the effluent into the Nicosia central sewerage system.

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