Currently, composting can be classified into aerobic composting
and anaerobic composting based on the growth conditions of the
microorganisms. Aerobic composting is the process in which the
organic matter is decomposed by the microorganisms in the presence of oxygen to produce humus-like substances, water, carbon
dioxide, and heat. As the quickest way to produce high-quality
compost, aerobic composting is a widely accepted method of stabilizing organic wastes and converting them to a usable and valueadded compost product (Liang et al., 2003). According to previous
studies, temperature is one of the main controlling factors in the
aerobic composting process (Chen, 2012). High temperatures are
essential for the destruction of pathogenic organisms, and decomposition is more rapid in the thermophilic temperature range.
Therefore, despite heat being released during the process, it is very
important to ensure energy supply to maintain thermophilic
temperature. As a new energy resource, solar energy, which can
provide heat and is one of the best renewable energy sources with
least negative impacts on the environment, has been rarely utilized
in composting (Solangi et al., 2011).