Kinetics and Isotherm Modeling for the Treatment of Rubber Processing Effluent Using Iron (II) Sulphate Waste as a Coagulant
| Autor: | Md. Sohrab Hossain, Rahmat Ngteni, Ahmad Jaril Asis, Zulhafiz Tajudin, Mohd Omar Ab Kadir |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Biochemical oxygen demand
lcsh:Hydraulic engineering Geography Planning and Development 02 engineering and technology 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry chemistry.chemical_compound Ammonia lcsh:Water supply for domestic and industrial purposes Adsorption Natural rubber lcsh:TC1-978 Effluent 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 Suspended solids Chemical oxygen demand 021001 nanoscience & nanotechnology Pulp and paper industry FeSO4·7H2O coagulation chemistry isotherm modeling kinetics visual_art rubber effluent visual_art.visual_art_medium Hydroxide 0210 nano-technology |
| Zdroj: | Water Volume 12 Issue 6 Water, Vol 12, Iss 1747, p 1747 (2020) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12061747 |
| Popis: | There is increasing concern to determine an alternative coagulant for treating industrial effluent with minimal environmental impact and operational cost. In this study, iron (II) sulphate heptahydrate (FeSO4· 7H2O) waste, an industrial byproduct from a titanium oxide processing industry, was used as a coagulant for the removal of ammonia (NH3), chemical oxygen demand (COD), biochemical oxygen demand (BOD), and suspended solid (SS) from secondary rubber processing effluent (SRPE). The highest percentage removal of BOD, COD, SS, and NH3 achieved was approximately 97%, 99%, 98%, and 95%, respectively, at pH 5.0, coagulant dose of 1 g/L, coagulation time of 60 min, sedimentation time of 60 min, and at an elevated temperature of 70 ° C. The best described adsorption isotherm model was found to be the Brunauer&ndash Emmett&ndash Teller (BET) model, indicated that the FeSO4· 7H2O adsorption took placed on the surface of iron hydroxide precipitates with multilayer formation and random distribution. The kinetics analysis showed that the adsorption mechanism was well fitted with the pseudo-second-order kinetic model. The findings of the present study show that the FeSO4· 7H2O waste has the potential to be used as a coagulant for the treatment of industrial effluents, including the secondary rubber processing effluent. |
| Databáze: | OpenAIRE |
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