Open AccessCoagulation-Flocculation Treatment for Naphthol Green Band Flour Wastewater
Author(s) -
Bukola M. Adesanmi Yung-Tse Hung and Howard H. Paul
Publication year - 2020
Publication title -
international journal of modern trends in science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-3778
DOI - 10.46501/ijmtst061237
Subject(s) - absorbance , flocculation , wastewater , effluent , chemistry , sewage treatment , pulp and paper industry , sulfate , coagulation , ferric , suspended solids , industrial wastewater treatment , chromatography , environmental engineering , environmental science , inorganic chemistry , organic chemistry , psychology , psychiatry , engineering
The interference of synthetic dye in the water bodies and environment poses a risk to both human andenvironmental health. Due to the recalcitrant nature of dye and presence of many other pollutants inindustrial wastewater, efficient method of treatment of industrial effluent is required to address the lingeringproblem over the years. To address this major concern, experimental was carried out on synthetic dye andflour wastewater treatment by coagulation-flocculation while varying operating parameters (dosage,concentration, coagulant type etc.). The effectiveness of coagulation-flocculation process for the removal ofNaphthol Green B in a mixture of dye wastewater and flour wastewater at different concentrations (50 ppm,100 ppm, 150 ppm, 200 ppm) was investigated. Using 3 coagulant (FeCl3, FeSO4 and Al2(SO4)3), color removalefficiency was also investigated. The effectiveness of the coagulation process was measured fortransmittance and absorbance as indices using UV-Vis Spectrophotometer. Also, the total organic carbon(TOC) was measured. Transmittance and absorbance values of 99.6% and 0.001 respectively were achievedpost treatment. Ferric Chloride and Aluminum Sulfate gave better results than Ferrous Sulfate which gavethe poorest transmittance and absorbance values indicating reduced color removal efficiency. The results ofthis study revealed that coagulation process is an efficient preliminary treatment for appreciable suspendedparticles and color removal from dye wastewater. It also showed the impact of coagulant dosage, dyestrength and combined wastewater samples on the removal efficiency and resulting effluent quality.