Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/19145
Title: Reduction of pollutants in paper mill effluents by aquatic plants
Authors: Vidyarthi A.K.
Dutt, Dharm
Upadhyaya J.S.
Published in: Proceedings of Cellulose Chemistry and Technology
Abstract: Degradation of organics in waste water was attributed to the microorganisms living in and around the aquatic plant root system through a symbiotic relationship. This relation produced a synergistic effect, resulting in increased degradation rates and removal of organic chemicals from the waste water. Four tropical aquatic plants, namely Eichhornia, Lemna, Spirodela and Salvinia, were employed to remove pollutants from a paper mill effluent having BOD and total solids in the ranges of 100-115 mg/L and 500600 mg/L, respectively. Each of them has an optimum range of growth temperature and most of them cannot tolerate extreme temperatures. The maximum percentage values of BOD removal in a steady state by Eichhornia, Lemna, Spirodela and Salvinia were of 82.45 (10-day retention time in September-October), 46.42 (6-day retention time in October-November), 44.34 (6-day retention time in October-November) and 51.31% (10-day retention time in October-November), respectively. The minimum BOD reductions by Eichhornia and Salvinia were of 22.86 and 22.15% in winter (November-December), and by Lemna and Spirodela were of 16.14 and 13.80% in summer (April-May), respectively. The maximum total solid mitigation occurred in the case of Eichhornia, i.e. of 49.8% (September-November), the minimum value being recorded in the case of Spirodela, i.e. of 3.7%, compared to all the other species (NovemberDecember). Of all studied aquatic plants, Eichhornia shows the maximum COD reduction (20.4%) and Spirodela - the minimum COD reduction. The highest reduction of total Kjeldahl's nitrogen, phosphorous and potassium removal occurred in September-November and May-June, the lowest being recorded in November-December. The maximum biomass yields for Eichhornia, Spirodela, Lemna and Salvinia were of 90.93-108.02,44.53-45.99 and 56.21-58.99 T(dw)/ha/yr, respectively.
Citation: Proceedings of Cellulose Chemistry and Technology, (2011), 291- 296
URI: http://repository.iitr.ac.in/handle/123456789/19145
Issue Date: 2011
Keywords: Aquatic plants
Biomass
BOD
Colour
Paper mill effluent
Total solids
ISSN: 5769787
Author Scopus IDs: 6507788178
7005982560
8679068400
Author Affiliations: Vidyarthi, A.K., Central Pollution Control Board, Ministry of Environment and Forest, Parivesh Bhawan, East Arjun Nagar, Delhi-110 032, India
Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 00, India
Upadhyaya, J.S., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 00, India
Corresponding Author: Vidyarthi, A.K.; Central Pollution Control Board, Ministry of Environment and Forest, Parivesh Bhawan, East Arjun Nagar, Delhi-110 032, India
Appears in Collections:Conference Publications [PT]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.