The batik industry generates large amounts of highly colored wastewater. Azo dyes in wastewater can cause environmental pollution. In this study, synthetic containing 32 mg/L Reactive Black 5 (RB5) and Orange 16 (RO16) was treated by ozonation a 2 L batch reactor. color unit reduced from 4240 to 70 after 10 min below 50 15 (7.3 g O3/m3, 4 L/min). first-order decay constant for determined be 1.1...

An isolated fungus, Aspergillus foetidus had the ability to decolourize growth unsupportive medium containing 100 mg L(-1) of reactive black 5 (RB5) dye with >99% efficiency at acidic pH (2-3). Pre-treatment of fungal biomass by autoclaving or exposure to 0.1M sodium hydroxide facilitated more efficient uptake of dye as compared to untreated fungal biomass. Pre-equilibrium biosorption of RB5 dy...

The study aim was to test the applicability of exoskeletons and molts from mealworm (Tenebrio molitor) cultures as sorbents for anionic dyes: Reactive Black 5 (RB5) Yellow (RY84). Factors investigated included: characteristics (FTIR, pHPZC), influence pH on sorption efficiency, kinetics (pseudo-first, pseudo-second-order, intraparticle diffusion models), determination maximum capacity (Langmuir...

Removal of Reactive Black 5 (RB5) dye from an aqueous solution was studied by its adsorption on banana peel biochars (BPBs). The factors affecting RB5 such as pH, exposure time, concentration, adsorbent dose, particle size and temperature were investigated. Maximum 97% removal obtained at pH 3 with 75 mg/L adsorbate concentration biochars. Fourier transform infrared (FTIR) scanning electron mic...

Cyclodextrins (CD) are cyclic oligosaccharides produced from the enzymatic degradation of starch as a white powder form; on the other hand, they can be transformed into ultrathin electrospun fiber form by electrospinning technique. The electrospun cyclodextrin fibers (CD-F) can be quite attractive materials to encapsulate bacteria for bioremediation purposes. For instance, CD-F not only serve a...

Stenotrophomonas maltophilia AAP56, laccase-producing bacteria, growing under different conditions, exhibit laccase activity that is highly affected by some environmental factors. Response surface methodology (RSM) was applied for the determination of laccase factor dependence using two substrates: ABTS (2,2’-azino-bis(3-ethylbenzthiazoline-6sulfonic acid)) and DMP (2,6 Dimethoxy-phenol). RSM w...

BACKGROUND Laccases are multicopper oxidases with high potential for environmental and industrial applications. Low-cost laccase production could be achieved by solid state fermentation on agro-industrial by-products. METHODS A number of agro-industrial solid wastes were tested as support-substrate for laccase production by Coriolopsis gallica under solid-state fermentation (SSF) conditions. ...