Sustainable applications of rice feedstock in agro-environmental and construction sectors: A global perspective

Sabry M. Shaheen, Vasileios Antoniadis, Muhammad Shahid, Yi Yang, Hamada Abdelrahman, Tao Zhang, Noha E.E. Hassan, Irshad Bibi, Nabeel Khan Niazi, Sherif A. Younis, Mansour Almazroui, Yiu Fai Tsang, Ajit K. Sarmah, Ki-Hyun Kim and Jörg Rinklebe

Renewable and Sustainable Energy Reviews, 2022, vol. 153, issue C

Abstract: Rice is second only to maize among the world's most important cereal crops, with a global harvested area of approximately 158 million hectares and an annual production of more than 700 million tonnes as paddy rice. At this scale, rice production generates vast amounts of waste in the form of straw, husk, and bran. Because of high cellulose, lignin, and silica contents, rice biowaste (RB) can be used to produce rice biochar (RBC) and rice compost (RC). Furthermore, RB can be used as sorbents, soil conditioners, bricks/concrete blocks, flat steel products, and biofuels, all of which make significant contributions to meeting United Nations Sustainable Development Goals (UNSDGs). Although previous reviews have explored individual applications of rice feedstocks, inadequate attention has been paid to multifunctional values and potential multi-utilities. Here, we offer a comprehensive review of RBC and RC with respect to: (1) preparation and characterization; (2) applications as soil conditioners and organic fertilizers and their effects on soil-carbon sequestration; (3) remediation of toxic element–contaminated soils and water; (4) removal of colors, dyes, endocrine-disrupting chemicals, personal-care products, and residual pesticides from water; and (5) applications in the construction industry. Specifically, we describe the opportunities for the sustainable use of RBC and RC in the management of contaminated soils and water as well as the construction industry. Overall, this review is expected to lengthen the list of possible multifunctional applications of RBC and RC.

Keywords: Agricultural resources; Rice feedstock; Pyrolysis and composting; Contaminated soil and water; Sustainable management (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1016/j.rser.2021.111791

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