Biosorption of reactive dye from textile wastewater by non-viable biomass of Aspergillus niger and Spirogyra sp.

Khalaf, Mahmoud

doi:10.1016/j.biortech.2007.12.010

Cited by 150 publications

(52 citation statements)

References 17 publications

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“…Aspergillus is the most common occurring genera in sewage sludge (More et al 2010). As a result, it has been extensively reported to have potential for heavy metal biosorption (Srivastava and Majumder 2008;Srivastava and Thakur 2006;Zafar et al 2007), biosorption of reactive dye from textile wastewater (Khalaf 2008), and biodegradation and detoxification of industrial wastewaters (Fadil et al 2003). Antagonistic Trichoderma are frequently found in soils in temperate regions and have been found with the pronounced ability to secrete diverse category of enzymes such as peroxidase, laccases, and oxidases which are responsible for the biodegradation of toxic organic compounds like polycyclic aromatic hydrocarbon (PAH) (Wang et al 2006), anthracene, and fluoranthene in treatment wetlands (Giraud et al 2001).…”

Section: The Impact Of Caffeine On Microbial Communitymentioning

confidence: 99%

Characterization of microbial communities in wetland mesocosms receiving caffeine-enriched wastewater

Zhang

Luo

Lee

et al. 2016

Environ Sci Pollut Res

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A 454 high-throughput pyrosequencing approach was used to characterize the structures of microbial communities in wetland mesocosms receiving caffeine-enriched wastewater at a concentration of 250 μg L −1. The removal efficiencies of caffeine in the planted beds (93.0 %) were significantly (p < 0.05) higher than those in the unplanted beds (81.4 %). Bacterial diversity was decreased by 25 and 22.4 %, respectively, in both planted and unplanted mesocosms after 210-day operation. The results of taxonomic analyses suggested that chronic exposure of wetland ecosystems to caffeine could lead to moderate shifts in microbial community composition. In total, 2156 operational taxonomic units (OTUs) were generated and 20 phyla comprising 260 genera were identified. The major phylogenetic groups at phylum level included Firmicutes (39 %), Actinobacteria (25.1 %), Proteobacteria (17.1 %), Synergistetes (5.6 %), and Chloroflexi (5.5 %).Bacilli and Synergistia increased in abundance in the planted mesocosms, while for the unplanted mesocosms, Actinobacterial, Clostridia and Betaproteobacteria exhibited increased proportion under the exposure of caffeine. At genus level, Propionibacterium, Staphylococcus, Bacillus, and Streptococcus were found to be increased in abundance after caffeine treatment. As for the response of fungal community to caffeine enrichment, genus like Cladosporium, Emericellopsis, Aspergillus, and Phoma were found to be resistant to caffeine disturbance. When compared to the microbial community between planted and unplanted mesocosms, a distinct community profile for both bacteria and fungi community was observed. The presence of plants had a remarkable effect on the structure of microbial community, helping buffer against the stress associated with caffeine exposure.

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Section: The Impact Of Caffeine On Microbial Communitymentioning

confidence: 99%

Characterization of microbial communities in wetland mesocosms receiving caffeine-enriched wastewater

Zhang

Luo

Lee

et al. 2016

Environ Sci Pollut Res

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“…After 1 h, it was observed that the biosorption capacity did not change. It was investigated the effect of biomass concentration on biosorption yield by Khalaf 16 and tested the removal of dyes from textile wastewater containing 0.22 % Synazol Red HF6BN and 0.1 % Synazol Yellow HF2GR reactive dyes by A. niger and found a maximum dye removal of 84 % at biomass concentration of 8 g L - 1 . In the present study, A. versicolor showed the maximum RB biosorption capacity (91.89 %) at 6.62 g L -1 biomass concentration.…”

Section: Single Effects Of Heavy Metal Ionsmentioning

confidence: 99%

“…Since biosorption is an economical and effective alternative for the removal of heavy metal ions and dyes from wastewater, the studies on this treatment method is steadily increasing, as reviewed recently 5 . Several microorganisms such as bacteria, fungi and algae have been tested for their biosorption ability to remove heavy metal ions and dyes [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] . Many data in the literature confirmed the suitability of this method also for Aspergillus sp.…”

Section: Introductionmentioning

confidence: 99%

Single and Binary Biosorption of Heavy Metal Ions and a Reactive Dye by Aspergillus Versicolor

Taştan¹,

Dönmez²

2010

Communications, Faculty of Science, University of Ankara Series B Chemistry and Chemical Engineering

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Biosorption is becoming a promising heavy metal ions and dye removal process in wastewater treatment. Removal of Cr (VI), Cu (II), Ni (II) and Remazol Blue (RB) from aqueous solution by biosorption on dead fungus, Aspergillus versicolor, was investigated. The initial concentrations were 50-150 mg L -1 for metal ions and 25-700 mg L -1 for the dye in the removal tests for each of these pollutants. The highest single Cr (VI), Cu (II) and Ni (II) yields removed were 15.82 % (pH 6), 28.47 % (pH 5), and 14.59 % (pH 6) respectively, and RB yield was 91.89 % (pH 5), 73.20 % (pH 6) in optimum conditions. The initial heavy metal ions and dye concentrations were about 50 mg L -1 and 100 mg L -1 for binary effects of heavy metal ions and the dye, respectively. In the experiments for the binary biosorption of the metal ions and the dye, the maximum yields of Cr (VI), Cu (II), and Ni (II) were 17.76 %, 22.71 %, and 22.74 %, and the maximum RB yields were 21.23 % (pH 6), 61.66 % (pH 5) and 51.66 % (pH 6), respectively. This is the first report on biosorption of single and binary heavy metal ions and/or dye by non-living biomass of A. versicolor. KEYWORDS: Biosorption; Fungus; heavy metal ions; Reactive dye; Wastewater treatment INTRODUCTIONAquatic pollution by heavy metal ions and dyes has been a major concern over the past decade due to increased industrial production and related discharges. A great number of industries such as textile, paper and pulp, printing, iron-steel, petroleum, paint, chemicals and pharmaceutics, metal-cleaning, plating, and metal-processing have been releasing these highly toxic pollutants to the environment

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“…This behaviour can be due to protonation of the binding sites (i.e. carboxyl groups), and at acidic pH values, cell walls may be damaged (Khalaf, 2008).…”

Section: Optimal Conditions For Lead Biosorption Processmentioning

confidence: 99%

Response surface methodology for lead biosorption on Aspergillus terreus

Córdova

León

Reyes

et al. 2011

Int. J. Environ. Sci. Technol.

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ABSTRACT:A central composite face-centered design was used to study and to optimize lead biosorption from aqueous solution on Aspergillus terreus biomass. Four factors such as stirring speed, temperature, solution pH and biomass dose at different levels were studied.The hierarchical quadratic model were established by adding replicates at the central point and axial points to the initial full factorial design (2 4 ). The percentage removal of lead was affected by biomass dose, pH, and interactions between pH and biomass dose, pH and stirring speed, pH and temperature. The hierarchical quadratic model described adequately the response surface based on the adjusted determination coefficient (R 2 Adj = 0.97) and the adequate precision ratio (42.21). According to this model, the optimal conditions to remove lead completely from aqueous solutions (at initial lead concentration of 50 mg/L and solutions of 100 mL) with Aspergillus terreus were at pH 5.2, 50 °C, stirring speed of 102/min and a biomass dose of 139 mg.The response surface methodology can be used to determine the optimal conditions for metal adsorption on several adsorbents. In addition, results reported in this research demonstrated the feasibility of employing A. terreus as biosorbent for lead removal.

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Biosorption of reactive dye from textile wastewater by non-viable biomass of Aspergillus niger and Spirogyra sp.

Cited by 150 publications

References 17 publications

Characterization of microbial communities in wetland mesocosms receiving caffeine-enriched wastewater

Characterization of microbial communities in wetland mesocosms receiving caffeine-enriched wastewater

Single and Binary Biosorption of Heavy Metal Ions and a Reactive Dye by Aspergillus Versicolor

Response surface methodology for lead biosorption on Aspergillus terreus

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