A breakthrough column study for removal of malachite green using coco-peat. Issue 12 (15th October 2019)

• Record Type: Journal Article
• Authors: Kumari, Roshni; Dey, Soumen
• Is Part Of: International journal of phytoremediation. Volume 21:Issue 12(2019)
• Page Start: 1263
• Page End: 1271
• Publication Date: 2019-10-15
• Subjects: Malachite green -- coco-peat -- breakthrough curves -- Thomas model -- BDST model -- MPSD -- HYBRID; Phytoremediation -- Periodicals; 628.5
• DOI: 10.1080/15226514.2019.1633252
• Languages: English
• ISSNs: 1522-6514

Abstract

Abstract: A continuous adsorption study in a fixed bed column using coco-peat (CP) as an adsorbent was carried out for the removal of toxic malachite green (MG) from contaminated water. Fixed bed column studies were carried out to check field application viability. Various parameters like particle size, pH, concentration, dose and interference were exercised to optimize dye removal. Data obtained from breakthrough column studies were evaluated using Thomas and BDST model. Thomas rate constants Kt (0.22 ml min −1 mg −1 ) and adsorption capacity q o (181.04 mg g −1 ) were estimated and found to favor efficiency of CP. Thomas model was tested with several parameters like flow rate, concentration, and bed depth. Upon increase in input dye concentration, flow rate and bed height, adsorption coefficients increased. According to BDST model, maximum dye uptake of 468.26 mg/l was obtained with an input dye concentration of 5 mg/l. HYBRID and MPSD error functions were tested and found that Thomas model fits best. Dilute hydrochloric acid was found best for desorption. Real wastewater from textile industry was analyzed and confirmed the prospect of large-scale industrial application. In conclusion, coco-peat can be used as a promising bio-sorbent in column bed for scavenging of MG from contaminated water.