Abstract
Anaerobic digestion (AD) has undergone many developments since its first appearance. Despite that, there are still some environmental and economical obstacles that are limiting its sustainability. On the other hand, different types of starch have proven their effectiveness in some different applications. Food processing industries are considered one of the largest generators of waste in the environment. With an aid of the response surface methodology (RSM), the proposed study aimed to find an optimised way to overcome the obstacles by studying the impacts of the starch isolated from the potato peels on the biogas produced from the AD of potato peels before and after starch separation. The study found that potato peels represented approximately 12.5% of the potato total weight. The starch has only a slight influence on the quantity of the biogas produced and much lower influences on its quality. This finding suggests further investigation is required on the production of starch bio-based products simultaneously with the biogas and bio-slurry, which may mitigate environmental influences and economical obstacles of AD and make it more commercially attractive. The study showed also that the highest energy gain by the g-VS/0.2 L of potato peels was 62.9% at 35 °C, 1.62 g-VS/0.2 L organic concentration and 50% sludge concentration, which yielded a maximum CH4 of 72.4%.
Highlights
IntroductionAnaerobic digestion (AD) is a biological conversion process of biomass into biogas, by breaking down the organic matter through microorganism and enzymes in an oxygen-free environment
Anaerobic digestion (AD) is a biological conversion process of biomass into biogas, by breaking down the organic matter through microorganism and enzymes in an oxygen-free environment.Over the years, this process has proved its ability to convert many types of biomass [1,2]
In order to avoid a setback in the development of AD, to increase its profitability and make any investment in it more feasible, this research evaluated the influence of the potato starch which was isolated from potato wastes on the AD biogas of the potato wastes
Summary
Anaerobic digestion (AD) is a biological conversion process of biomass into biogas, by breaking down the organic matter through microorganism and enzymes in an oxygen-free environment. Over the years, this process has proved its ability to convert many types of biomass [1,2]. Beside the operational issues of AD, which can be avoided if they were considered in an early stage, there are some environmental and economic challenges associated with the AD when it is applied at a large scale. The accumulation of these amounts of digestate would alert to an occurrence of serious environmental consequences if they are not properly handled [5]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
