Decolorization of pulp and paper mill effluent by growth ofAspergillus niger

Kannan, Karthik; Oblisami, G.

doi:10.1007/bf01200929

Cited by 21 publications

(6 citation statements)

References 2 publications

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“…The level of color reduction in the present study is below to these reports, but it is comparable with the C. versicolor in liquid culture this fungus removed over 60% of the color of combined bleach Kraft effluent within 6 days in the presence of sucrose (Livernoche et al 1983). However, the most important aspect of present study is that there was a very high reduction in the COD and BOD as compared to earlier report (Kannan 1990). …”

Section: Effluent Treatmentscontrasting

confidence: 54%

Reduction of pollutants in pulp paper mill effluent treated by PCP-degrading bacterial strains

Chandra

Raj

Yadav

et al. 2008

Environ Monit Assess

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Two PCP-degrading bacterial strains, Bacillus cereus (ITRC-S6) and Serratia marcescens (ITRC-S7) were used for the treatment of pulp and paper mill effluent at conditions; 1.0% glucose and 0.5% peptone at 30 +/- 1 degrees C at 120 rpm for 168 h of incubation. These two bacterial strains effectively reduced colour (45-52%), lignin (30-42%), BOD (40-70%), COD (50-60%), total phenol (32-40%) and PCP (85-90%) within 168 h of incubation. However, the highest reduction in colour (62%), lignin (54%), BOD (70%), COD (90%), total phenol (90%) and PCP (100%) was recorded by mixed culture treatment. The bacterial mechanism for the degradation of pulp and paper mill effluent may be explained by an increase in the cells biomass using added co-substrates resulting liberation of significant amount of chloride due to bacterial dechlorination of chlorolignins and chlorophenols this showed reduction in colour, lignin and toxicity in the effluent. Further, GC-MS analysis of ethyl acetate-extractable compounds from treated pulp paper mill effluent reinforces the bacterium capability for the degradation of lignin and pentachlorophenol, as many aromatic compounds such as 2-chlorophenol, 2, 4, 6-trichlorophenol and tetrachlorohydroquinone, 6-chlorohydroxyquinol and tetrachlorohydroquinone detected which were not present in the untreated effluent.

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Section: Effluent Treatmentscontrasting

confidence: 54%

Reduction of pollutants in pulp paper mill effluent treated by PCP-degrading bacterial strains

Chandra

Raj

Yadav

et al. 2008

Environ Monit Assess

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“…3. These data are in agreement with other studies in which a critical amount (between 0.1 and 0.2%) of glucose was necessary to maintain the decolourization activity, but only low glucose consumption was observed [62]. This has led to the suggestion that /3-glucosidase production may play a key role in the efficiency of decolourization by fungi [63,64].…”

Section: Industrial Waste Water Treatmentsupporting

confidence: 92%

Aspergilli and lignocellulosics: Enzymology and biotechnological applications

Duarte

Costa‐Ferreira

1994

FEMS Microbiology Reviews

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Aspergilli are versatile ascomycetes that are able to transform at a rapid rate a wide spectrum of lignin-related aromatic compounds. While it is clear that these fungi can degrade phenolic and polysaccharide components from lignocellulosic material, the status regarding degradation of high-molecular mass lignins is controversial. This review compiles data from the literature as well as that from the authors' laboratory with the aim of clarifying this point. The main body of evidence points towards the inability of aspergilli alone to degrade lignin free of low-molecular mass contaminants. Nevertheless, the ability of this genus to efficiently degrade hemicelluloses makes it an essential participant in the complex microbial system necessary for wood decay under natural conditions. Aspergilli are known to overproduce high levels of hemicellulolytic enzymes. Out of the large array of these enzymes that act in concert to degrade lignocellulosic material, only endoxylanases of aspergilli are described in so far as these are the main activities required for enzyme-aided bleaching. The biochemical features of the endoxylanases from Aspergillus niger are briefly described as these serve to illustrate how a complex family of isozymes is necessary to deal with the structural and chemical heterogeneity of xylans. Emphasis is placed on the biotechnological applications of lignocellulosic materials transformed by aspergilli. The key application areas are biopulping and biobleaching where a reduction in the use of environmentally harmful chemicals traditionally used in the pulp and paper industry is envisaged. Waste water treatment represents another vast application area where aspergilli have been shown to be effective not only in colour removal but also in the bioconversion of potentially noxious substances into useful bioproducts.

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“…The colour and lignin reduced [27,[35][36][37]. The decolourization potential of these fungi varies greatly ranging from values above 90% to below 30%.…”

Section: Analysis Of Data and Confirmatory Experimentsmentioning

confidence: 99%

“…Another study showed 56% reduction in colour after treatment for 48 h using Aspergillus niger. Initial colour was 1000 CU [36]. Some of the studies have optimized the process parameters; however, they have not evaluated the improvement in the process after optimization.…”

Section: Analysis Of Data and Confirmatory Experimentsmentioning

confidence: 99%

Decolourization and detoxification of pulp and paper mill effluent by Emericella nidulans var. nidulans

Singhal

Thakur

2009

Journal of Hazardous Materials

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Decolorization of pulp and paper mill effluent by growth ofAspergillus niger

Abstract: Pulp and paper mill effluent was decolorized by growth ofAspergillus niger. Adding glucose (2.0 g/l) and NH4H2PO4 (1.0 g/l) improved decolorization by the fungus (leaving 19% of original colour) and reduced the BOD5 (43%) and the COD (41%) of the effluent after 48 h of incubation.

Cited by 21 publications

References 2 publications

Reduction of pollutants in pulp paper mill effluent treated by PCP-degrading bacterial strains

Reduction of pollutants in pulp paper mill effluent treated by PCP-degrading bacterial strains

Aspergilli and lignocellulosics: Enzymology and biotechnological applications

Decolourization and detoxification of pulp and paper mill effluent by Emericella nidulans var. nidulans

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