This is the novel technology which is gaining the interest of many researchers and composters. Unlike other methods of composting it is very advanced.

The whole system is closed inside a container or a tank. There is an outlet exhaust for emission of harmful gases and odor which get filtered through biofilters fitted at the exhaust unit. The aeration is provided either by rotation of the container or through aeration pumps, to maintain a steady airflow rate.

Since the whole system is enclosed, moisture is conserved within itself thus reducing the dependency on water. The ideal moisture content of 40-60%, can be maintained easily.

A thermophilic condition which is favorable for aerobic thermophilic bacteria can be achieved due to the prevention of heat loss. Since the inside environment is not affected by the exterior conditions in-vessel composting can be taken up in any part of the world, irrespective of the climate of the place. The comparative evaluation of in-vessel composting system with other systems of composting is shown in Table 2.

Advantages of In-Vessel Composting System over Traditional Methods

• Reduced dependency on malignant chemical fertilizers
• Reclamation of soil health and enhancement of beneficial soil micro and macro-organisms
• Efficient organic waste management
• Saving the cost of transportation and fertilizer purchase
• Improved environmental protection
• Income generation through selling the outcome
• Enhanced corporate image
• Improved relations with the nearby villagers, other industries and organizations and market advantages