Ceratophyllum demersum is a type of drowning macrophytics that plays a key role in freshwater ecosystem and is commonly used in phytoremediation of heavy metals in water. This preliminary study focused on assessing the ...

Tofu and palm oil industries produce a lot of residual production of high organic matter. With the addition of EM4, the residual production can be accelerated decomposition into a nutrient-rich material so that it can ...

Most of the Bengkalis areas are peatlands which save a very large quantity of water, but the quality is low, so that its use is limited to fill clean water needs or to support fisheries activities. Many studies have shown ...