The effect of physico-chemical processes on color removal from bleached kraft pulp mill effluent | |
| Author | Sharma, Vinod Kumar |
| Call Number | AIT RSPR no.PP-02-03 |
| Subject(s) | Wood-pulp industry--Waste disposal Wood-pulp--Bleaching |
| Note | A research study submitted in pmtial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resource and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ;no. PP-02-03 |
| Abstract | This study investigates the color and COD reduction efficiency of lignin removal process (LRP), chemical oxidation by Fenton's reagent and lime precipitation treatment in bleach plant as well as secondary clarifier outlet effluent of kraft pulp and paper mill. Jar test, which was used to determine the optimum sludge and lime dosage for LRP and lime precipitation treatment system respectively. For chemical oxidation by Fenton's reagent, a 50 ml beaker with stirrer plates containing a magnetic stirrer was used to determine the optimum Fenton's reagent dosage and pH. The most appropriate treatment system on the basis of treatment efficiency for applying with Advance Agro bleach plant effluent is chemical oxidation by Fenton's reagent. Color, COD and light absorbance reduction were 95% to 96%, 84% to 89% and 98% to 99% respectively. These results showed extensive degradation of lignin derived compounds from bleach plant effluent by Fenton's reagent. Another treatment system, which was used in this study, was lignin removal process. Results showed that when old mixed kraft sludge (primary and biosludge) was used for this method, treatment efficiency of this technique was negative. Where as with fresh kraft fiber sludge, color and COD reduction were 76% and 45% respectively. Treatment efficiency of this system is low compared to chemical oxidation by Fenton's reagent and lime precipitation. Lime precipitation treatment system was used for secondary clarifier outlet effluent of advance agro public company limited for color and COD reduction. Dosage of lime for this treatment system was 500 to 1500 mg/I. At 1500 mg/I dosage, removal efficiency of color and COD were 83% and 78% respectively. This is an appropriate treatment system of color and COD reduction from secondary clarifier outlet effluent of bleached kraft pulp and paper mill. |
| Year | 2002 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. PP-02-03 |
| Type | Research Study Project Report (RSPR) |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Pulp and Paper Technology (PP) |
| Chairperson(s) | Ruhanen, Mauno |
| Examination Committee(s) | Visvanathan, Chettiyappan;Nazhad, Mousa M. |
| Scholarship Donor(s) | Government of Finland |
| Degree | Research report (M.Sc.) - Asian Institute of Technology, 2002 |