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Agroindustry wastes: biofuels                               16


           and biomaterials feedstocks for
           sustainable rural development


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                              1
           Moonmoon Hiloidhari , Nilutpal Bhuyan , Nirmali Gogoi ,
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           Dibyakanta Seth , Ankit Garg , Anoop Singh , Shiv Prasad and
           Rupam Kataki 2
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            IDP in Climate Studies, Indian Institute of Technology Bombay, Mumbai, India,
           2                                          3
            Department of Energy, Tezpur University, Tezpur, India, Department of Environmental
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           Science, Tezpur University, Tezpur, India, Department of Food Engineering and Technology,
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           Tezpur University, Tezpur, India, Department of Civil and Environmental Engineering,
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           Shantou University, Shantou, China, Department of Scientific and Industrial Research,
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           Government of India, New Delhi, India, Centre for Environment Science & Climate
           Resilient Agriculture (CESCRA), Indian Agricultural Research Institute, New Delhi, India
           16.1    Agroindustry scenario in the world and India

           About 36% of the global land area is some degree suitable for agricultural produc-
           tion, and 1.5 billion ha of land is currently under crop production (arable land and
           land under permanent crops) [FAO (Food and Agriculture Organization of the
           United Nations), 2018]. Nearly 2.7 billion ha of global land surface can further be
           made available for potential expansion of crop production. The most prevalent
           crops cultivated across the globe are cereals (barley, maize, rice, millet, rye, sor-
           ghum, and wheat) (Leff et al., 2004). In particular, wheat, maize, barley, rice, and
           millet are predominantly cultivated over two-thirds of the world’s cropland. Wheat
           is the most abundant crop globally (22% global cultivated area is under wheat).
           Rice is the major crop in tropical and subtropical countries. Other major crops
           grown globally are cassava, cotton, groundnuts or peanuts, oil palm fruit, potatoes,
           pulses, rapeseed or canola, soybeans, sugarcane, sugar beets, and sunflower (Leff
           et al., 2004).
              Different estimates are available on global potential of agricultural wastes. The
           variations are due to differences in assessment procedure (survey, secondary data
           based or modern using geographical information system (GIS) tools), types of feed-
           stocks, and their characteristics (residue production ratio, productivity), competing
           uses, land use and ecological, geographical, and logistics constraints. Lal (2005)
           reported that global crop residue production is 3.8 billion tons in 2001, of which
           74% contributed by cereals, 8% by legumes, 3% by crops, 10% by sugar crops, and
           5% by tubers (Table 16.1). Cereals contribute 2.8 billion tons residues annually,
           Refining Biomass Residues for Sustainable Energy and Bioproducts. DOI: https://doi.org/10.1016/B978-0-12-818996-2.00016-8
           © 2020 Elsevier Inc. All rights reserved.
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