11Valorization of By-Products Produced During the Extraction and Purification of Biofuels
Subodh Kumar*, Tinku Casper D’ Silva, Dushyant Kumar, Adya Isha, Sameer Ahmad Khan, Ram Chandra, Anushree Malik and Virendra Kumar Vijay
Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India
Abstract
Biofuel production from renewable organic feedstocks is emerging as a sustainable solution for increasing energy consumption, declining fossil fuel reserves, and deteriorating environmental health. Different thermochemical and biochemical routes utilize the different organic feedstocks depending upon the suitability of that feedstock for biofuel production via a particular route. Byproducts produced during the extraction of biofuels (biodiesel, bioethanol, and biogas) are the primary concern in the way of the waste to wealth approach. Discarding the byproducts in the open environment may again hamper the idea of sustainable development. On the other hand, utilizing the byproducts to produce value-added (biofuels and chemicals) products may boost the whole process in the perspective of a circular economy and clean environment. This chapter discusses the recent studies exploring various approaches of utilizing the by-products of biodiesel production, bioethanol, and biogas fermentation.
Keywords: Byproducts, biodiesel, bioethanol, biogas, glycerol, stillage, de-oiled cake, digestate
11.1 Introduction
Deteriorating climatic conditions, energy insecurity ...
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