Removal of Disperse Orange and Disperse Blue dyes present in textile mill effluent using zeolite synthesized from cenospheres

Abstract

In the present research, an efficient, eco-friendly method of utilization of coal fly ash in the form of zeolite, to treat wastewater containing dyes has been studied. Response surface methodology involving Box-Behnken design was applied for a batch process to evaluate the effect of process parameters like contact time, dye concentration, agitation speed, pH and adsorbent dosage onto zeolite. Disperse Orange 25 (DO) dye showed maximum 96% removal under optimal conditions of contact time (119 min), dye concentration (38.00 mg/L), agitation speed (158 rpm), pH (6.10) and adsorbent dosage (0.67 g/L), whereas 95.23% of Disperse Blue 79:1 (DB) dye removal was observed at adsorbent dose (1.05 g/L), dye concentration (26.72 mg/L), agitation speed (145 rpm), pH (5.68) and contact time (122 min). Study concluded that cenospheres derivatized zeolite adsorbent is efficient, eco-friendly and economical along with high potential for removal of DO and DB dyes from the aqueous solutions.

A Cellulose‐Based Adsorbent using Box‐Behnken Design for the Adsorption of Reactive Blue 19 Dye from Simulated Wastewater

“…Because active centers in CBA gradually saturate within the solution [55] . After that, CBA was regenerated using 0.1 N NaOH as a desorbing agent [56] . Again, adsorbent was reused for three consecutive cycles.…”

“…[55] After that, CBA was regenerated using 0.1 N NaOH as a desorbing agent. [56] Again, adsorbent was reused for three consecutive cycles. The % RB19 dye removal reaches to 66.91 %.…”

A new multifunctional anionic 3D Zn(ii)-MOF based on heptanuclear clusters: selective adsorption of organic dyes and a dual-emitting sensor for nitroantibiotics

“…6–8 Though multitudinous conventional adsorbents including activated carbons, resins, zeolites, etc. , 7–12 have been exploited to eliminate various dye mixtures, it is still desirable to design and fabricate new adsorbents for adsorbing organic dyes with high efficiency.…”

“…Among these methods, adsorption is recognized as an attractive technology as it is highly efficient, easy to operate and low-cost. [6][7][8] Though multitudinous conventional adsorbents including activated carbons, resins, zeolites, etc., [7][8][9][10][11][12] have been exploited to eliminate various dye mixtures, it is still desirable to design and fabricate new adsorbents for adsorbing organic dyes with high efficiency.…”

Sequential extraction and risk assessment of pollutants from one major tributary of the Ganga

“…Water is an essential life supporting component. When it gets contaminated or infected, it adversely affects to the human beings and other organism (Markandeya et al 2021;Pandey et al 2021). Heavy metals are one of the major contaminants that pose serious problem not only in a river body but in any medium due their persistent nature and non-biodegradable properties (Kisku et al 2016;Ostad-Ali-Askar et al 2018).…”