Industrial use of azo dyes has been linked to severe environmental damage in the textile and apparel sectors. The breakdown products many are poisonous mutagenic, posing a threat human health environment. Hence, dye wastewater bioremediation is gaining interest. objective this study was focused on biodegradation an dye, Reactive Orange 16 (RO16), anaerobic continuous tank reactor operated with ...

Magnetic Fe3 O4 nanoparticles modified by polypyrrole (PPy@Fe3 O4 MNPs) was synthesized by chemical co-precipitation method and used as an adsorbent for removal of cationic dyes, Reactive Red195, from aqueous solutions. The resulting products are characterized by scanning electron microscope (SEM) and FT-IR. The effects of solution pH value, adsorbent amount, adsorption time and capacity of the...

A fast, sensitive, and selective method for the simultaneous determination of one pair of synthetic colorants commonly found mixed in food products, Amaranth (AM) and Tartrazine (TZ), based on their adsorption and oxidation on a screen-printed electrode (SPE) is presented. The variation of peak current with pH, supporting electrolyte, adsorption time, and adsorption potential were optimized usi...

The main goal of the study is to produce eco-friendly furniture dyes by using bio-colorants and determine color stability these in outdoor conditions. In this regard, dye extracts obtained from red beet (Beta vulgaris), safflower (Carthamus tinctorius L.), purple cabbage (Brassica oleracea), as a bio-colorant source, were applied MDF test panels mixing with water-based synthetic lacquer coating...

A sequencing batch reactor (SBR) inoculated with activated sludge and bioaugmented a dye-decolorizing yeast strain—Yarrowia lipolytica (HOMOGST27AB) was assembled to form yeast-bioaugmented aerobic granular (AGS). The AGS-SBR operated for the treatment of synthetic saline wastewater (12 g L−1) intermittently fed reactive textile dye (Navy Everzol ED) at 25, 15, 7.5 mg L−1. Dye degradation did n...

The ability of two varieties (hard and soft) of almond peels, as inexpensive sorbents for the removal of bezanyl red (acid dye) from synthetic aqueous solutions has been studied. After their characterization by different techniques, (elemental analysis, biochemical analysis, IR spectroscopy, thermogravimetric analysis, scanning electron microscopy and mercury porosimetry), the dye sorption kine...

Miller and Baumann (3) and Giese, Miller and Baumann (1) studied the carcinogenicity of various methyl derivatives of dimethylaminoazobenzene and found that the m'-methyl-p-dimethylaminoazobenzene was the most potent of the azo dyes for the production of liver tumors in rats, being even more active than ~-dimethylaminoazobenzene itself. As we were interested in studying conditions of rapid carc...