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Removal of colour and lignin from paper mill wastewater using activated carbon from plastic mix waste
- Source :
- International Journal of Environmental Science and Technology. 19:2641-2658
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- The study aimed at the use of char produced during pyrolysis of mix plastic waste. It further focused on producing activated carbon from char and also found its efficacy as efficient adsorbent for treatment of pulp and paper mill wastewater. The activated carbon was characterized in comparison with raw char for their physical, surface and adsorptive properties. Batch type adsorption experiments were carried out using 100 ml wastewater to observe the individual effectiveness using five different variables such as adsorbent dose (0.25–2.0 g), pH (6–10), time (5–24 h), agitation speed (100–200 rpm) and temperature (30–50 °C) by keeping other variables constant which helped to find out the effective range of all the variables. The competency was evaluated on the basis of colour and lignin content of pulp and paper industry wastewater. Once the effective range of different variables was identified, the statistical analysis was conducted to monitor the mutual impact on the reduction in colour and lignin contents in wastewater. From the statistical design applied, the best result was obtained at activated carbon dose (1.25 g), pH (8.0), contact time (7 h), agitation speed (184 rpm) and temperature (40 °C). The study resulted in reduction of 96.48% in colour and 94.25% in lignin at optimized condition in comparison with 87.37 and 80.44%, respectively, at unoptimized conditions. A potential increase in reduction of 9.0% in colour and 14.0% in lignin content was achieved after optimization through statistical design that confirmed its usefulness.
- Subjects :
- Environmental Engineering
business.industry
Pulp (paper)
Paper mill
010501 environmental sciences
engineering.material
Pulp and paper industry
01 natural sciences
chemistry.chemical_compound
Adsorption
chemistry
Wastewater
engineering
medicine
Environmental Chemistry
Lignin
Char
General Agricultural and Biological Sciences
business
Pyrolysis
0105 earth and related environmental sciences
Activated carbon
medicine.drug
Subjects
Details
- ISSN :
- 17352630 and 17351472
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- International Journal of Environmental Science and Technology
- Accession number :
- edsair.doi...........fd4b3f09632d22294f6c8eda13ae9f1b