Decolorization and mineralization of azo dye Acid Blue 113 by the UV/Oxone process and optimization of operating parameters

Abstract

A B S T R A C TA UV/Oxone advanced oxidation process was proposed to degrade and mineralize a synthesized Acid Blue 113 (AB113) dyeing wastewater. Various operating parameters which affected the removal efficiencies of AB113 and total organic carbon (TOC) such as reaction time, Oxone dosage, initial AB113 concentration, initial pH, and UV intensity were studied. Results presented effective removal of AB113 azo dye by UV/Oxone process based on both AB113 and TOC indicators. The reaction kinetics was shown to be pseudo-second-order reaction. In UV/Oxone process, the higher the Oxone dosage applied, the higher the AB113 and TOC removal efficiencies can be obtained up to 6.3 mM Oxone concentration. The AB113 removal efficiency and pseudo-second-order rate constant decreased with increase in the initial dye concentration. However, the proposed UV/Oxone process was proved to be able to degrade high AB113 concentration up to 400 mg l −1 . The initial pH showed no significant effect on AB113 removal efficiency. UV intensity affected TOC mineralization efficiency significantly. In contrast, UV intensity presented less important factors on degradation of AB113.

Development of sustainable acid blue 113 dye adsorption system using nutraceutical industrial Tribulus terrestris spent

“…The techniques, methods and procedures reported in literature for the remediation of AB113 dye can be broadly classified into biological-cum-chemical [13,20,21,28,51] electrocoagulation [39], physical methods using UV radiations [36,44,[46][47][48], photocatalytic degradation [66,74], low frequency ultrasound assisted degradation [40], nanomaterials [49] and use of inorganic materials including activated carbons [16,34,42,43,45,63]. Nevertheless, huge initial cost in installing operational plant, high-operational cost, regeneration problem, secondary pollutants, sensitivity to variations in wastewater input, interference by some wastewater constituents, and residual sludge generation are some associated problems in these methods [11,61].…”

Insights into isotherms, kinetics, and thermodynamics of adsorption of acid blue 113 from an aqueous solution of nutraceutical industrial fennel seed spent

“…Various techniques, methods, and procedures have been reported in the literature, which are listed as electrocoagulation 1 , photocatalytic degradation 2 , 3 , biological–chemical procedures 4 – 13 , ultrasound methods with low frequency 14 , sono catalytic procedures 15 , 16 , and nanomaterials 17 , 18 . Various inorganic and nanomaterials are reported, of which activated carbon is widely used in textile industries 5 , 19 , 20 . These methods suffer from serious drawbacks such as the undesirable increase in operating expenses and overhead costs in the installation of plant and/or equipment, formation of degradation of the dye resulting in possible more toxic and hazardous secondary and tertiary pollutants, regeneration of the adsorbent resulting in high environmental and economic impact, inconsistency and large variation of the composition of the effluent, unwanted generation of the sludge are the few problems associated with the existing methods 21 , 22 .…”

Synthesis of triethylene tetramine–modified water‐insoluble corn flour caged in magnetic chitosan resin and its adsorption application for removal of patulin from apple juice

“…In addition, the adsorption behavior could be related to the valency forces through sharing of electrons between patulin and TETA‐WICF/MCR, via which the patulin may form a complex with active groups of TETA‐WICF/MCR (Peng et al., 2016). Also, k 2 value obtained from the pseudo‐second‐order model decreased with the increase of the initial patulin concentration, which suggested that the adsorption process could be independent of initial patulin concentration (Shu, Chang, & Huang, 2016).…”