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Abstract
Korshinsk peashrub branches (Korpb) are agroforestry byproducts that accumulate in millions of tons per year and need to be reasonably utilized. To maximate the utilization value of Korpb, an integrated process was proposed and conducted by using Korpb as the main substrate ingredient for Pleurotus tuoliensis cultivation and also performing anaerobic digestion (AD) of spent mushroom substrate (SMS) for biogas production. The results indicated that the cultivation substrate including Korpb could obtain higher mushroom yields than a conventional substrate, and AD of SMS added the value of Korpb. Preliminary calculation suggested that, for every t of P. tuoliensis production, 1.65 t Korpb was consumed and 314 m3 biogas was produced from corresponding amount of SMS, bringing a total economic profit of $906.1. In addition, this integrated strategy has positive ecological and social benefits. The maximization of Korpb value can not only promote the biological conversion of Korpb to circle economy, but also be beneficial for the development of environment, energy conservation and edible fungus industry.
Highlights
Korshinsk peashrub branches are agroforestry byproducts that accumulate in millions of tons per year and need to be rationally and efficiently utilized
The value of Korshinsk peashrub branches can be maximized by P. tuoliensis cultivation and anaerobic digestion of spent mushroom substrate, which promote the biological conversion of Korshinsk peashrub branches to circle economy, and be beneficial for the sustainable development of environment, energy conservation and edible fungi industry
The above result showed that Korshinsk peashrub branches (Korpb) are a substrate material with high nitrogen content and can be an ideal raw material for edible fungus production
Summary
Korshinsk peashrub branches are agroforestry byproducts that accumulate in millions of tons per year and need to be rationally and efficiently utilized. The production of Korshinsk peashrub branches (Korpb) are estimated to be approximately 550,000 tons every year, most of the branches are discarded or burned, leading to serious pollution, and causing a great waste of resources. It becomes an important mission for government and technologists to find out a way to make effective use of Korpb to avoid a biomass resource waste, and help realizing sustainable development of an economic society. The production of Pleurotus spp using Korpb as the substrate ingredient could consume a large amount of Korpb, achieving efficient waste utilization, and solving the shortage problem of convetional cultivation substrate such as cotton seed hull
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