UTILIZATION OF AQUEOUS TWO PHASE SYSTEM FOR THE REMOVAL OF COLOUR FROM TEXTILE WASTEWATER
UTILIZATION OF AQUEOUS TWO PHASE SYSTEM FOR THE REMOVAL OF COLOUR FROM TEXTILE WASTEWATER
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Date
2014-09
Authors
MAMZA, SAMUEL BILLY
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Abstract
Colour removal from effluent textile wastewater will greatly improve the quality of
water bodies, which is vital to environmental health and sustainability. This study is
based on finding more efficient methods of treating the effluent of textile wastewater by
removing colour as a contaminant. The effects of concentration of dye solution, tie line
length and weight ratio on the effectiveness of aqueous two phase system were studied.
Five different textile dye colours were simulated at concentrations of 500 mg/l and 250
mg/l, and the efficiency of decolourization using polyethylene glycol/ammonium
sulphate (PEG/(NH4)2SO4) and polyethylene glycol/sodium carbonate (PEG/Na2CO3),
aqueous two phase systems (ATPS) as a separation technique was tested. The study
showed that the best tie line length (TLL) of 52.51 % (w/w) and 55.50 % (w/w) for
PEG/(NH4)2SO4 and PEG/Na2CO3 ATPS removed textile dye colours excellently within
the range of 84.9 to 99.7 %. This operating condition was then used to remove colour
from untreated effluent textile wastewater and result showed 99.1 % and 98.8 % of
colours were removed using PEG/(NH4)2SO4 and PEG/Na2CO3 ATPS respectively.
Further analysis showed an improvement in pH, total dissolve solids, dissolved oxygen,
Calcium, Sulphate, chemical oxygen demand and biological oxygen demand (BOD5) of
the treated water. All the parameters were found to meet National Environmental
Standard and Regulations Enforcement Agency (NESREA, 2009) effluent limit
discharge requirements
Description
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES,
AHMADU BELLO UNIVERSITY, ZARIA
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD
OF A MASTER OF SCIENCE DEGREE IN CHEMICAL ENGINEERING.
DEPARTMENT OF CHEMICAL ENGINEERING,
FACULTY OF ENGINEERING
AHMADU BELLO UNIVERSITY, ZARIA
NIGERIA
SEPTEMBER, 2014
Keywords
UTILIZATION,, TEXTILE,, WASTEWATER