International Journal of Current Research and Review
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IJCRR - 7(1), January, 2015

Pages: 13-19

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EFFECT OF DIFFERENT PARAMETERS ON BIODECOLOURIZATION OF AZO REACTIVE RED RB DYE FROM TEXTILE EFFLUENT

Author: T. Madhuri, B. Lakshmi Kalyani, P. Suvarnalatha Devi

Category: General Sciences

Abstract:The aim of the present study is to isolate textile dye effluent degrading organisms. The synthetic textile dye effluents released into the environment, pollute soil and water ecosystem. Many of these effluents are toxic, carcinogenic and mutagenic in nature which effect aquatic and soil flora and fauna. Thus there is a need of processing these effluents before releasing into the environment. The Bacteria was isolated from soil contaminated with textile dye effluent by serial dilution followed by pour plating technique on nutrient agar medium. The ability of degradation was assessed by decolourization assay. Four isolates (RR1, RR2, RR3 and RR4) had the ability to degrade the dye effluent at different concentrations. The effect of pH, temperature, carbon and nitrogen sources and time course of decolourization was observed. The isolated RR2 and RR3 showed significant decolourization of dye at 600ppm.The ideal temperature was 370C and pH 7 and 9. Both isolates RR2 and RR3 showed optimum growth in media supplemented with sucrose and glucose as carbon source and RR2 showed good growth in ammonium sulphate and RR3 in peptone as a nitrogen source. The result concludes that the RR2 and RR3 isolates showed marked decolourization for textile dye effluent.

Keywords: Azo dye, Decolourization, Bioremediation, Red RB

Full Text:

INTRODUCTION

Among the textile industries, one of the most extensively used as dyes are synthetic chemicals. Approximately 10,000 different dyes and pigments are used industrially and 0.7 million tonnes of synthetic dyes produced annually, worldwide (Dawker et al., 2008; Rafi et al., 1990). India’s dye industry produces different type of dyes and pigments. Nearly 7,00,000 tonnes of dyes are produced annually Worldwide (Zollinger, 1987). Production of dye stuffs and pigments in India is close to 80,000 tonnes. India is the second large exporter of dye stuffs and intermediates after China (Mathur et al.,2005). Azo dyes being the large group of synthetic dyes constitute up to 70% of all known commercial dyes produced (Carliell et al., 1998). Synthetic dyes generally classified in to reactive, acidic, vat, dispersing, direct and sulphur etc. During the dyeing process, approximately 10-15% of the dyes are released in to the wastewaters, causing serious environmental and health hazards (Chen et al., 2003).Disposal of these dyes into the environment causes serious threat, since they may significantly affect the photosynthetic activity of hydrophtes by reducing light penetration and also toxic to aquatic organisms due to their breakdown products (Hao et al., 2000; Aksu et al., 2007). Dyes may also be toxic to some aquatic life due to the presence of aromatics and metals, chlorides etc (Gupta et al., 2003). The textile finishing generates a large amount of waste water containing dyes and represents one of the largest causes of water pollution (Maulin et al., 2013). Considerable attention has been given in evaluating the capability of microorganisms in decolourizing and degrading the azo dyes. Many studies on the decolourizing capability of microorganisms especially fungi and bacteria have been reported (Feng et al., 2012). Various physical and chemical methods have been used for the removal of dyes from wastewater effluent (Jadhav et al., 2008). However, implementation of physical and chemical methods have inherent drawbacks of being economically unfeasible, unable to completely remove the recalcitrant azo dyes and organic metabolites may cause pollution problems and involving complicated procedures (Forgaus et al., 2004; Jadhav et al., 2008).

MATERIALS AND METHODS

Dyes and characterization Dye

– Reactive red RB was chosen for decolourization in the present study and was provided by a dyeing unit, Satravada, Chittoor District of Andhra Pradesh, India.

Standard dye solution

The dyes were dissolved in sterile distilled water to a concentration of 500 mg/10 ml.

Screening and Identification of microorganisms

Dye degrading bacteria was isolated from the textile industry effluent by serial dilution method (Madigan et al., 2000). The pure isolates were maintained on nutrient agar at 40 C for further use. These isolates were streaked on Luria bertani medium amended with dye, incubated at room temperature and observed for clear zone around the colony. Among the seven isolates four showed the decolourization activity and they were selected for further use.

Decolourization studies

Decolourization activity was expressed in terms of percentage of decolourization and was determined by monitoring the decrease in absorbance at absorption maxima (λmax 518) of respective dye. This was calculated using the following formula as described by (Sani et al., 1999).

 

Effect of Physicochemical conditions on decolourization activity

Effect of pH and temperature

Various physical parameters like pH (5, 6, 7, 8 and 9) and temperatures (27°C, 37°C and 47°C) were monitored to study their effect on decolourization of reactive red RB dye.

Effect of dye concentration

Different concentrations of dye like 200, 400, 600, 800 and 1000ppm were incorporated into 250 ml Luria bertani medium, inoculated and incubated at optimum conditions.

Effect of differentC and N sources

Different carbon sources like glucose, sucrose, lactose and maltose were incorporated separately into Luria bertani medium at 1% concentration level. Similarly, different sources of nitrogen like yeast extract, peptone and ammonium sulphate at 0.1% concentration were added individually.

Time course of dye decolourization

The time course of decolourization was carried out under optimum conditions are: for RR2 isolate initial dye concentration at 600ppm,pH 7, 37°C, 1% sucrose , and 0.1%ammonium sulphate, for RR3 isolate at initial dye concentration at 600ppm, pH 9, 37°C, 1% glucose and 0.1% peptone. Flasks were incubated up to 36 hours at their respective temperature and samples were removed at regular intervals for every 6 hours and analyzed for decolourization activity as describe above.

STATISTICAL ANALYSIS

The experiment was done in triplicate for each parameter. The results were expressed as percentage of decolourization with respect to control values and compared by two-way ANOVA and DMRT test. A difference was considered statistically significant if p≤0.05.

RESULTS

Screening of dye degrading bacteria

The total seven isolates were isolated from textile dye effluent and screened for degradation by streaking on dye amended Luria bertani medium. Among the seven isolates four showed efficient decolourization. Then the four isolates named as RR1, RR2, RR3 and RR4 respectively. Among the four degraded bacterial isolates, RR3 showed highest decolourization activity followed by RR2, RR1 and RR4 respectively.

Decolourization studies

250 ml of Luria bertani broth amended with 600ppm concentration of red RB dye was inoculated with 4 isolates individually. All the flasks were incubated in static conditions at 370 C for 7 days. 5ml of samples was withdrawn at regular intervals and centrifuged at 10000 rpm for 10min. The supernatant was collected and the percentage of decolourization was measured at 518nm using UV-Spectrophotometer. The uninoculated dye medium supplemented with respective dye was used as blank (Jacob Thomson, 1998). Decolourization activity (%) was calculated by using the above formula and all assays were done in triplicates and the Mean value was taken for statistical analysis.

Effect of Physicochemical conditions on decolourization activity

Effect of pH and temperature

The pH exhibited varied range of effect on dye decolourization (Table 1). RR1, RR2 and RR4 isolates exhibited highest degrading capability at pH 7, whereas RR3 at pH9, respectively. The different temperatures also showed varied range of effect on dye decolourization as shown in (Table 2). All 4 isolates exhibited highest degrading capability at 37°C respectively.

Effect of dye concentration

The different dye concentration exhibited varied range of effect on dye decolourization (Table 3). RR1, RR2, RR3 and RR4 isolates exhibited highest degrading capability at 600ppm concentration.

Effect of different C and N sources

The effect of different carbon sources exhibited varied rang of effects on dye decolourization (Table 4). RR1 and RR2 isolates showed highest degrading capability in sucrose while RR3 and RR4 showed maximum growth in glucose. The different nitrogen sources also showed effect on dye degrading of dye decolourization (Table 5). RR1and RR4 isolates exhibited highest degrading capability in yeast extract, for RR2 in ammonium sulphate and for RR3 in peptone.

Time course of dye decolourization

The present study reveals the high decolourization of textile dye effluent by four isolates with optimization of conditions at 84%, 90%, 94% and 80% of decolourization of dye at 36 hours.

DISCUSSION

Screening of dye degrading bacteria

The process of degradation of textile dyes by employing microorganisms particularly bacteria were also carried out to reduce environmental pollution (Srividhya et al., 2012). The present study was carried out to examine the degradation of dye by isolating the bacteria from textile dye effluents. Among the seven isolates, only four isolates showed positive results for dye decolourization, as indicated by the change and disappearance of colour of the dye from the dye-containing media of the petri plates. A zone of different decolourization around the bacterial colony which might be due to the production of extracellular enzymes by the bacteria during the biodegradation of tested dye (Joshni et al., 2011; Ajay kumar pandey et al., 2012). RR3 and RR2 isolates exhibited maximum decolourization when compared to RR1 and RR4.

Effect of Physicochemical conditions on decolourization activity

Effect of pH and temperature

The pH has a maximum effect on the efficiency of dye decolourization and the optimal pH for colour removable is between 6.0 and 10.0 for most of the dyes (Chen et al., 1999). From the above data it can be inferred that RR3 (91%) at pH 9.0 is the ideal for its activity and is more efficient in decolourizing azo dye, similarly pH plays a great influence in decolourization of Reactive Red 2 dye. These findings are closely similar with alkaline pH for Bacillus species at pH 9.0 showed decolourization percentage was 64.34% by (EI-Sersy et al., 2007). The results revealed that RR3 is more efficient in decolourizing azo dye at 37°C is the ideal temperature for its activity. Our results similar to that (Ponaj et al., 2011) were reported as the range of activity on decolourization of orange 3R with Bacillus sps at 37°C was 78.57%. Centin et al. (2006) reported that decolourizing activity was suppressed at 45°C, might be due the loss of cell viability or deactivation of the enzymes responsible for decolourization at higher temperature.

Effect of dye concentration

Maximum dye degradation was observed at 600ppm concentration for four isolates. However, when the dye concentration was high, the isolates showed less capability. Similar results were also mentioned by (Khalid et al., 2012).Dye concentration can influence the efficiency of microbial decolourization through a combination of factors including the toxicity imposed by dye at higher concentration (Sahasrabudhe et al., 2011).

Effect of different C and N sources

RR3 and RR4 exhibited maximum growth in glucose. Dyes being deficient in Carbon sources the biodegradation of dyes without any extra Carbon sources is very difficult (Senan et al., 2004). The reason for low decolourization at sucrose, fructose and maltose might be that this carbon sources could not meet the good growth requirements for the bacterial isolate. Wang et al., (2009) reported a Citrobacter sps, decolourized by 96.2% of reactive red 180 dye with 4g/l of glucose as carbon source. Bacterial utilization of azo dyes as a source of carbon and energy has been reported by (Yatome et al., 1993; Dykes et al., 1994).RR2 showed maximum in ammonium sulphate and RR3 in peptone as a nitrogen source. From the above data it was revealed that RR3 is more efficient in decolourizing azo dye with peptone is the ideal nitrogen source for its activity .The similar results was observed by (Chen et al.,1999;Liu et al., 2006). The presence of peptone regenerates NADH and this acts as an electron donor for the azo dye reduction. In addition, peptone significantly enhances the strain’s activity of azo dye decomposition and colour removal rate was increased with rise in peptone concentration (40 g l-1). The nitrogen sources were less efficient than carbon source availed by microorganism (Ola et al., 2010).

Time course of dye decolourization

The time course of decolourization of reactive red RB dye under optimum conditions was 36 hours for RR2 90%, whereas 94% of decolourization was observed in RR3 isolate within 36 hours showed (Table 6 and 7).The outcomes of this experiment indicated that RR2 and RR3 showed the decolourization process to a better extent than RR1 and RR4. However, both the species of bacteria can be inferred as good agents for the degradation of azo dye. Jothimani et al., (1998) has reported 59% dye removal from a dyeing industry effluent using pseudomonas sps.

CONCLUSION

The present study concludes that dye degrading microorganisms RR2 and RR3from an effluent contaminated site of textile dyeing industry have potential of decolourization. This observation has established that the bacteria’s are adaptive in nature and can degrade the dye contaminants. Thus, it is concluded that the bacterial isolates can be used as a good microbial source for textile waste water treatment.

ACKNOWLEDGEMENT

Authors acknowledge the immense help received from the scholars whose articles are cited and included in reference of this manuscript. The authors are also grateful to authors/ editors/ publishers of all those articles, journals and books from where the literature for this article has been reviewed and discussed. Authors are highly grateful to the Department of Applied Microbiology, DST-FIST, CURIE, Sri Padmavathi Mahila Visavavidyalam, Tirupati, Andhra Pradesh, India for providing Research facilities.

          Values are the means of triplicates ± SD.

 

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A Study by Gainneos PD et al. entitled "A Comparative Evaluation of the Levels of Salivary IgA in HIV Affected Children and the Children of the General Population within the Age Group of 9 – 12 Years – A Cross-Sectional Study" is awarded Best Article of Vol 13 issue 05 Special issue on Recent Advances in Dentistry for better Oral Health
A Study by Alkhansa Mahmoud et al. entitled "mRNA Expression of Somatostatin Receptors (1-5) in MCF7 and MDA-MB231 Breast Cancer Cells" is awarded Best Article of Vol 13 issue 06
A Study by Chen YY and Ghazali SRB entitled "Lifetime Trauma, posttraumatic stress disorder Symptoms and Early Adolescence Risk Factors for Poor Physical Health Outcome Among Malaysian Adolescents" is awarded Best Article of Vol 13 issue 04 Special issue on Current Updates in Plant Biology to Medicine to Healthcare Awareness in Malaysia
A Study by Kumari PM et al. entitled "Study to Evaluate the Adverse Drug Reactions in a Tertiary Care Teaching Hospital in Tamilnadu - A Cross-Sectional Study" is awarded Best Article for Vol 13 issue 05
A Study by Anu et al. entitled "Effectiveness of Cytological Scoring Systems for Evaluation of Breast Lesion Cytology with its Histopathological Correlation" is awarded Best Article of Vol 13 issue 04
A Study by Sharipov R. Kh. et al. entitled "Interaction of Correction of Lipid Peroxidation Disorders with Oxibral" is awarded Best Article of Vol 13 issue 03
A Study by Tarek Elwakil et al. entitled "Led Light Photobiomodulation Effect on Wound Healing Combined with Phenytoin in Mice Model" is awarded Best Article of Vol 13 issue 02
A Study by Mohita Ray et al. entitled "Accuracy of Intra-Operative Frozen Section Consultation of Gastrointestinal Biopsy Samples in Correlation with the Final Histopathological Diagnosis" is awarded Best Article for Vol 13 issue 01
A Study by Badritdinova MN et al. entitled "Peculiarities of a Pain in Patients with Ischemic Heart Disease in the Presence of Individual Combines of the Metabolic Syndrome" is awarded Best Article for Vol 12 issue 24
A Study by Sindhu Priya E S et al. entitled "Neuroprotective activity of Pyrazolone Derivatives Against Paraquat-induced Oxidative Stress and Locomotor Impairment in Drosophila melanogaster" is awarded Best Article for Vol 12 issue 23
A Study by Habiba Suhail et al. entitled "Effect of Majoon Murmakki in Dysmenorrhoea (Usre Tams): A Standard Controlled Clinical Study" is awarded Best Article for Vol 12 issue 22
A Study by Ghaffar UB et al. entitled "Correlation between Height and Foot Length in Saudi Population in Majmaah, Saudi Arabia" is awarded Best Article for Vol 12 issue 21
A Study by Siti Sarah Binti Maidin entitled "Sleep Well: Mobile Application to Address Sleeping Problems" is awarded Best Article for Vol 12 issue 20
A Study by Avijit Singh"Comparison of Post Operative Clinical Outcomes Between “Made in India” TTK Chitra Mechanical Heart Valve Versus St Jude Mechanical Heart Valve in Valve Replacement Surgery" is awarded Best Article for Vol 12 issue 19
A Study by Sonali Banerjee and Mary Mathews N. entitled "Exploring Quality of Life and Perceived Experiences Among Couples Undergoing Fertility Treatment in Western India: A Mixed Methodology" is awarded Best Article for Vol 12 issue 18
A Study by Jabbar Desai et al. entitled "Prevalence of Obstructive Airway Disease in Patients with Ischemic Heart Disease and Hypertension" is awarded Best Article for Vol 12 issue 17
A Study by Juna Byun et al. entitled "Study on Difference in Coronavirus-19 Related Anxiety between Face-to-face and Non-face-to-face Classes among University Students in South Korea" is awarded Best Article for Vol 12 issue 16
A Study by Sudha Ramachandra & Vinay Chavan entitled "Enhanced-Hybrid-Age Layered Population Structure (E-Hybrid-ALPS): A Genetic Algorithm with Adaptive Crossover for Molecular Docking Studies of Drug Discovery Process" is awarded Best article for Vol 12 issue 15
A Study by Varsha M. Shindhe et al. entitled "A Study on Effect of Smokeless Tobacco on Pulmonary Function Tests in Class IV Workers of USM-KLE (Universiti Sains Malaysia-Karnataka Lingayat Education Society) International Medical Programme, Belagavi" is awarded Best article of Vol 12 issue 14, July 2020
A study by Amruta Choudhary et al. entitled "Family Planning Knowledge, Attitude and Practice Among Women of Reproductive Age from Rural Area of Central India" is awarded Best Article for special issue "Modern Therapeutics Applications"
A study by Raunak Das entitled "Study of Cardiovascular Dysfunctions in Interstitial Lung Diseas epatients by Correlating the Levels of Serum NT PRO BNP and Microalbuminuria (Biomarkers of Cardiovascular Dysfunction) with Echocardiographic, Bronchoscopic and HighResolution Computed Tomography Findings of These ILD Patients" is awarded Best Article of Vol 12 issue 13 
A Study by Kannamani Ramasamy et al. entitled "COVID-19 Situation at Chennai City – Forecasting for the Better Pandemic Management" is awarded best article for  Vol 12 issue 12
A Study by Muhammet Lutfi SELCUK and Fatma entitled "Distinction of Gray and White Matter for Some Histological Staining Methods in New Zealand Rabbit's Brain" is awarded best article for  Vol 12 issue 11
A Study by Anamul Haq et al. entitled "Etiology of Abnormal Uterine Bleeding in Adolescents – Emphasis Upon Polycystic Ovarian Syndrome" is awarded best article for  Vol 12 issue 10
A Study by entitled "Estimation of Reference Interval of Serum Progesterone During Three Trimesters of Normal Pregnancy in a Tertiary Care Hospital of Kolkata" is awarded best article for  Vol 12 issue 09
A Study by Ilona Gracie De Souza & Pavan Kumar G. entitled "Effect of Releasing Myofascial Chain in Patients with Patellofemoral Pain Syndrome - A Randomized Clinical Trial" is awarded best article for  Vol 12 issue 08
A Study by Virendra Atam et. al. entitled "Clinical Profile and Short - Term Mortality Predictors in Acute Stroke with Emphasis on Stress Hyperglycemia and THRIVE Score : An Observational Study" is awarded best article for  Vol 12 issue 07
A Study by K. Krupashree et. al. entitled "Protective Effects of Picrorhizakurroa Against Fumonisin B1 Induced Hepatotoxicity in Mice" is awarded best article for issue Vol 10 issue 20
A study by Mithun K.P. et al "Larvicidal Activity of Crude Solanum Nigrum Leaf and Berries Extract Against Dengue Vector-Aedesaegypti" is awarded Best Article for Vol 10 issue 14 of IJCRR
A study by Asha Menon "Women in Child Care and Early Education: Truly Nontraditional Work" is awarded Best Article for Vol 10 issue 13
A study by Deep J. M. "Prevalence of Molar-Incisor Hypomineralization in 7-13 Years Old Children of Biratnagar, Nepal: A Cross Sectional Study" is awarded Best Article for Vol 10 issue 11 of IJCRR
A review by Chitra et al to analyse relation between Obesity and Type 2 diabetes is awarded 'Best Article' for Vol 10 issue 10 by IJCRR. 
A study by Karanpreet et al "Pregnancy Induced Hypertension: A Study on Its Multisystem Involvement" is given Best Paper Award for Vol 10 issue 09

List of Awardees

A Study by Ese Anibor et al. "Evaluation of Temporomandibular Joint Disorders Among Delta State University Students in Abraka, Nigeria" from Vol 13 issue 16 received Emerging Researcher Award


A Study by Alkhansa Mahmoud et al. entitled "mRNA Expression of Somatostatin Receptors (1-5) in MCF7 and MDA-MB231 Breast Cancer Cells" from Vol 13 issue 06 received Emerging Researcher Award


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International Journal of Current Research and Review (IJCRR) provides platform for researchers to publish and discuss their original research and review work. IJCRR can not be held responsible for views, opinions and written statements of researchers published in this journal

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