Clairmont Et Al


Clairmont et al

Greener Journal of Agricultural Sciences Vol. 6 (5), pp. 180-185, May 2016.

 ISSN: 2276-7770  

Research Paper

Manuscript Number: 031216057



The Bio-methane Potential of the Water Hyacinth (Eichhorniacrassipes)


L. Clementson1*, Darren Wilson2 and 

Paulette Ragobeer3


1Research Scientist,
National Agricultural Research and Extension Institute, Mon Repos, East Coast Demerara,

 2Research Assistant, University of
Guyana, Turkeyen, East Coast Demerara, Guyana.

3Lecturer, University
of Guyana, Turkeyen, East Coast Demerara, Guyana.


The maintenance of
waterways by local municipalities and irrigation authority has been made
difficult due to the presences and nature of Eichhorniacrassipes, commonly known as water hyacinth. The water
hyacinth is a very aggressive invader that forms copious mats, covering the
entire surface of waterways. It causes oxygen depletion resulting fish kill.
This plant species has no known direct food value to wildlife and is considered
a pest species. In its drive for green economic development, its potential
energy contribution within a slurry mixture via biomethanization should be
explored. Biomethanization has become an increasing interest in many
industrialized societies for the socio-economic benefits of being able to utilize
organic waste to produce an environmentally friendly biogas which reduces
carbon emissions to the environment burned. Also, the effluent can be used as
fertilizers and raw materials for composting. Utilization of water hyacinth in
this manner will certainly aid in the reduction of pollution in local waterways
hence this study seeks to compare the anaerobic digestion of manure and water
hyacinth, and determine the water hyacinth-manure mix ratio for optimum gas

In this
research, fresh water hyacinth was
collected and chopped up into small pieces. A series of experiments
using the biodigesters was conducted, where each biodigester was fed with
chopped water hyacinth and mixed with various combinations of manure (100%,
75%, 50%, 25% and 0%) and 250ml of water, for five different fermentation
slurries. Biomethanation was carried out in triplicates with a retention time
six (6) weeks (42 days) in the mesophilic temperature range. The study showed
that there was no statistical difference in the methanization of manure and
water hyacinth. Further, the 25% water hyacinth and 75% manure (25%W.H-75%M)
mix ratio produced the highest volumes of biogas that was significantly
different from all other slurry mixtures. This implies that water hyacinth can
be used to enhance biogas production.


Keywords: water hyacinth, waste management,
waterways maintenance, anaerobic digestion.

Post-review Rundown

  View/get involved, click [Post-Review Page]


Ansari, A. A., and Rajpersaud, J.
(2012).Physicochemical Changes during Vermicomposting of Water Hyacinth
(Eichhorniacrassipes) and Grass Clippings.Soil Science, 2012,


Haigh, M. (1991).The use of manatees for the control of aquatic
weeds in Guyana. Irrigation and drainage systems 5(4):339-349.


Lareo, L., and Bressani R. (1982).Possible utilization of the
water hyacinth in nutrition and industry. Food and Nutrition Bulletin 4(4):10.
(2014). Water Hyacinth, Eichhorniacrassipes. Retrieved 12/17/2014.


U.S. Environmental Protection Agency
Office of Water Office of Science and Technology Engineering and Analysis
Division (U.S. EPA).(2001). METHOD 1684 Total, Fixed, and Volatile Solids in
Water, Solids, and Biosolids.


Center for Agricultural Bioscience International
(CABI). 2014. Eichhorniacrassipes. Retrieved 12/20/2014.

Leave a Reply

Your email address will not be published. Required fields are marked *