Aeration helps to maintain an aerobic process and to avoid the Temperature exceeds 70°C. At the same time it is important that the pile is not cooled. Therefore the aeration rate must be estimated according to the pile size.

Aeration helps to maintain an aerobic process and to avoid the Temperature exceeds 70°C. At the same time it is important that the pile is not cooled. Therefore the aeration rate must be estimated according to the pile size.

Hi,

Composting process are carried out by two different methods (aerobic and anaerobic). In aerobic type of composting method, requires turning of pile in frequent interval. With frequent aeration, Eh, Temperature, final products of the compost get to be change.In case of anaerobic, final products is will be methane, CO2 etc...In aerobic alcohol might be produced..

Hi Khalid, the aeration of the compost pile is done when necessarily:

1-to avoid anaerobic conditions (normally bellow 1% of oxygen in pore space)

2-to cool the pile if over heated (over 73°C)

3-to release the water excess if the initial moisture is too hight (regular level is 55% by volume)

4-to mix the ingredient if the pile is build through distinct layer approach

High temperature composting is dependent on both adequate water, air, and C/N ratio. The high temperature cannot be maintained if the factors are not within margins. Size and texture of piles influence these factors. When aeration is forced the aerobic metabolism which is more rapid is fanned however the piles can high out if water is not added correctly. Most modern composts are a modification Indore Indian layered composts which are put in industrialized scope by replacing the manual turning process with a mechanized one. When piles respire they will tend to loss Carbon and the 30 to 1 C/N ratio will generally stabilize as about 11 to 1 as more Carbon is lost than Nitrogen in the largely microbial respiration. When compost is no longer respiring heavily that can signal mature compost ready for use. Ripening compost can lead to greater biocontrol control potential as many of the probiotics for roots are not favored by high temperature and need a ripening period to acquire the probiotic populations for soil amendment to promote healthy plant development. One of most important organic amendments in my experience is combining high temperature compost with earthworm castings. The casting which are a manure give starter stimulation and the stabilized compost give season long nutrient benefits.

Dear Azad

The aeration rate affects microbial activity, substrate degradation rate, and temperature variation in the composting process. Too little aeration can lead to anaerobic conditions, however, too much aeration can lead to excessive cooling, preventing the thermophilic conditions required for optimum rates of decomposition . Therefore, it is important that the amount of aeration is managed at the appropriate level to conduct the composting process efficiently. the optimal aeration rate might be closely related to the composition of composting materials in the different composting processes. Therefore, the optimal range of aeration rate is variable due to the dissimilarity of composting material in the different composting process...

Regards,

Ata

air must be supplied for 3 purposes:

1- to satisfy the oxygen demand from organic decomposition,

2- to remove water from wet substrates (to provide drying),

3- to remove heat generated by organic decomposition (to control process temperature. if not controlled, temperature can reach high levels that biological activity is actually impeded ).