BIOACTIVATORS EFFECTIVENESS AND UTILIZATION IN BULKING AGENTS OF WATER HYACINTH AS COMPOST

Abstract

Water hyacinth is a water plant species of the most dominating in the waters –
waters or rivers - rivers. Water hyacinth has the ability to multiply very quickly that in an
instant the surface waters can be closed by the presence of water hyacinth. Research
shows that the extent of cover of water hyacinth is now more widely because of the ability
of growing 2.6 times faster in open water. This can be overcome by using water hyacinth
and processes it into compost, because the water hyacinth contains a very high water
content of 96%, then to reduce the water content is added bulking agent and to accelerate
the composting process that is able to degrade added bioactivator water hyacinth.
In this study the materials used are water hyacinth, and as a bulking agent is
zeolite, bentonite, sawdust. Then the water hyacinth and bulking agent are mixed, then
added
bioactivator Primadek, EM4 and, on each - each treatment. The composting process
using aerobic composter. The composting process is stopped when the C / N ratio has
reached the limit required by the SNI Compost (10-20). This process is conducted in a
device called a composter.
The results showed that, for the treatment of water hyacinth with zeolite and
compost
EM4 mature at day 14, water hyacinth with bentonite and EM4 pda day 15. In general,
the resulting compost compost quality standards (SNI 19-7030-2004), unless the ratio of
C / N for EG + SG + EM4 newly reached 43.88. Based on the results of Variance
Analysis (Anova) followed by DMRT showed that the addition of bulking agent and for
treatment bioactivator + Z + EM4 EG and EG + B + EM4 significantly different in C / N
ratio of compost but not significantly different in content of nitrogen (N), phosphorus (P)
and potassium (K).