Coagulation/Flocculation Potential of Polyaluminium Chloride and Bentonite Clay Tested in the Removal of Methyl Red and Crystal Violet

2016 ◽  
Vol 42 (4) ◽  
pp. 1389-1397 ◽  
Author(s):  
E. Fosso-Kankeu ◽  
A. Webster ◽  
I. O. Ntwampe ◽  
F. B. Waanders
Keyword(s):  
Crystal Violet ◽  
Bentonite Clay ◽  
Methyl Red ◽  
Polyaluminium Chloride

scholarly journals Statistical Optimization, Partial Purification, and Characterization of Phytase Produced from Talaromyces purpureogenus NSA20 Using Potato Peel Waste and its Application in Dyes De-colorization

2021 ◽  
Vol 12 (4) ◽  
pp. 4417-4431
Keyword(s):  
Crystal Violet ◽  
Specific Activity ◽  
Marine Fungus ◽  
Maximum Activity ◽  
Statistical Optimization ◽  
Partial Purification ◽  
Methyl Red ◽  
Potato Peel ◽  
Phytase Production

In this study, Talaromyces purpureogenus NSA20 as phytase-producing marine fungus was isolated and identified morphologically and genetically and deposited in Gene Bank with accession number MW031769.1. One factor at a time (OFAT) optimization was performed, where the result revealed that potato peel waste (1.5%) as a substrate was the highest for phytase production at 6 days, where the maximum activity of phytase was 138.4 U/ml. Moreover, Box–Behnken design as response surface methodology was carried out for statistical optimization of phytase production by T. purpureogenus NSA20. Statistical optimization illustrated that the optimized medium for phytase production increased 1.57 fold compared to the OFAT optimized medium. Partial purification of phytase was carried out, where the enzyme after precipitation with ammonium sulfate (80%) was 2.6-fold purified phytase, and the yield was 39.8 %., the specific activity was 31.19 U/mg proteins. Additionally, partially purified phytase was characterized; the maximum activity of phytase at Fe++ 0.1% and pH 5.5 at 37 oC was 350 U/ml. Eventually, phytase was applied for crystal violet and methyl red decolorization, where decolorization percentages of crystal violet and methyl red were 85.5% and 75% at 120 min, respectively.

Effect of C60 on methyl red and crystal violet dye-doped photovoltaic device

Ionics ◽  
2007 ◽  
Vol 14 (3) ◽  
pp. 263-267 ◽  
Author(s):  
Ajanta Haldar ◽  
Subhasis Maity ◽  
N. B. Manik
Keyword(s):  
Crystal Violet ◽  
Photovoltaic Device ◽  
Methyl Red ◽  
Crystal Violet Dye

Adsorption-Coagulation for the Decolorisation of Textile Dye Solutions

2003 ◽  
Vol 38 (3) ◽  
pp. 553-562 ◽  
Author(s):  
Rashmi Sanghi ◽  
Bani Bhattacharya
Keyword(s):  
Activated Carbon ◽  
Dye Removal ◽  
Bentonite Clay ◽  
Textile Dye ◽  
Eriochrome Black T ◽  
Synthetic Dye ◽  
Different Types ◽  
Long Time ◽  
Polyaluminium Chloride ◽  
Dye Solutions

Abstract Studies were undertaken for the removal of colour from different types of synthetic dye solutions by using powdered activated carbon (PAC) and bentonite clay (BC) as adsorbents. The different types of dyes (direct, mordant and basic) studied were Direct Orange, Eriochrome Black T and Malachite Green. The synthetic dye solutions behaved differently with the two adsorbents. The effect of adsorption by PAC and the further addition of a very small dose of a coagulant polyaluminium chloride (PAlC) on the settling and/or reuse of adsorbents used was studied. PAC and BC, though effective adsorbents, remained suspended in the solution for a long time. PAlC not only enhanced dye removal, but also formed a sludge that settled very quickly and which could also be reused effectively for dye removal.

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