Conclusion
Pineapple leaves-activated carbon showed the potential as
sustainable adsorbent alternative for the removal of dyes from
wastewater based on its high removal capacity of methylene blue.
Saturated or used activated carbon can be further utilized to pro-
duce pyrolignous acid or charcoal through pyrolysis process which
can directly alleviate its disposal problem.
Acknowledgement
The authors would like to acknowledge the financial support
from Universiti Teknologi Malaysia (under the Research University
Grants 06H37 and 01G64) and Malaysia Pineapple Industry Board
(MPIB) (4B096, 4B072) under the Contract Research Grants.