STUDIES ON THE TREATMENT OF COAL AND BREWERY WASTEWATER USING ADSORPTION AND COAGULATION– FLOCCULATION TECHNIQUES.

AUTHOR: NWEKE CHINENYENWA NKEIRUKA

DEPARTMENT: CHEMICAL ENGINEERING

AFFILIATION: NNAMDI AZIKIWE UNIVERSITY, AWKA

This work is an experiment of the treatment of coal and brewery wastewater using coagulation-flocculation and adsorption techniques. Jar test method was applied as the coagulation-flocculation technique while batch adsorption method was implemented as the adsorption technique. The coagulants used were Alum and Mucuna pruriens (MUC). These were varied in terms of dosages, pH, time and was experimented on brewery effluent. The adsorbent used was the seed shell of pumpkin seeds. The adsorbent used was the seed shell of pumpkin seeds. The adsorbent was activated and divided into two; pumpkin activated carbon in base (PACB) and pumpkin activated carbon in acid (PACA). These were experimented on coal and brewery effluents separately. The average value for coagulant rate constant (K) was 899.57 while the average value for the order of reaction () was 1.66.The average value for the Langmuir constants Q (0.98) and b (0.04) were determined. The average value for the Freundlich constants K (2.25 x 108 ) and n ( -0.05) while 0.099 (Kad) was the average Lagergren value determined. The average value for thermodynamic parameters were ΔH0 (8.73J/mol), ΔS0 (1103.98J/mol) and ΔG0 (-331,844.42 J/mol), a little above room temperature (300c). These values obtained and how the work was carried out were explained in their various chapters.

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