Int. J. Renewable Energy & Environmental Engineering
ISSN 2319-5347, ISI Impact Factor: 0.763
VOLUME 02 NO. 03 JULY 2014:
Title: A study of coconut shell - activated carbon for
filtration and its comparison with sand filtration
Authors: Shilpa S. Ratnoji,
Nimisha Singh
Abstract: In India, the quality of
raw water available for drinking purpose varies
significantly resulting in modifications to the
conventional water treatment scheme consisting of
aeration, chemical coagulation,
flocculation,sedimentation, filtration and disinfection.
Different alterations in these stages could lead to
improvised levels of water quality. A novel solution to
reinstate the sand filtration process is by utilizing
activated carbon (AC) derived from coconut shell. A
pilot scale study of filtration unit with different
grades (on size basis) of coconut shell activated carbon
(CS-AC) such as WTD816, WTE830 and WTE124 was carried
out. These AC’s were assembled at different depths
independently as well as in combination. This work
examined reduction and removal of iron,turbidity,
biochemical oxygen demand (BOD) and chemical oxygen
demand (COD) in river water by making different
arrangements of CS-AC in the filtration unit. Also its
comparison with sand, a conventional practice in water
treatment plants in India was done to reduce these
parameters. Finer grade activated carbon (AC-III) showed
the maximum iron removal (95%). It also showed reduction
in COD, BOD and to some extent turbidity in all types of
arrangement which was not so in case of traditional sand
filtration process. This technique is advantageous and
it also helps in utilization of an agricultural waste.
Pages:
201-204