Cannabis sativa: A Plant Suitable for Phytoremediation and Bioenergy Production

Phytoremediation has been gaining interest as a sustainable approach for management of the sites contaminated with toxic/hazardous substances. Several plants have been reported in the literature that have the potential for simultaneous execution of phytor

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Sanjeev Kumar, Ritu Singh, Virendra Kumar, Anita Rani, and Rajeev Jain

Abstract

Phytoremediation has been gaining interest as a sustainable approach for management of the sites contaminated with toxic/hazardous substances. Several plants have been reported in the literature that have the potential for simultaneous execution of phytoremediation and production of useful products like biogas, bioethanol, biodiesel, charcoals, fibres, etc. during the process. Among several plant species, the present chapter has been focused on Cannabis sativa L., a multipurpose annual herbaceous plant species which has wide range of application as seed oil, industrial fibre, food, livestock feed, medicine as well as significant place in recreation, religious and spiritual practices. Cannabis sativa L. has the potential to serve as phytoremedial agent for removal of toxic metals from contaminated sites as well as yields high biomass which could be used for production of bioenergy. The energy yield of Cannabis sativa L. for biofuel and biogas production has been reported comparable to most of the energy crops. The present chapter provides an overview of the phytoremediation capacity of Cannabis sativa L. for resolving environmental issues of contaminated soil along

S. Kumar (*) • R. Singh (*) Department of Environmental Science, Central University of Rajasthan, NH8, Bandarsindri, Kishangarh, Ajmer 305817, Rajasthan, India e-mail: [email protected]; [email protected]; [email protected] V. Kumar Centre for Environmental Sciences, Central University of Jharkhand, Brambe, Ranchi 835205, India A. Rani Department of Botany, Dyal Singh College, University of Delhi, New Delhi 110003, India R. Jain Forensic Toxicology Division, Central Forensic Science Laboratory, Ministry of Home Affairs, Government of India, Tetelia, Gotanagar, Guwahati 781033, Assam, India © Springer Nature Singapore Pte Ltd. 2017 K. Bauddh et al. (eds.), Phytoremediation Potential of Bioenergy Plants, DOI 10.1007/978-981-10-3084-0_10

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with its potential abilities to generate bioenergy to meet energy demand of future generations. Keywords

Bioenergy • Cannabis sativa L. • Phytoremediation • Biogas • Biomethanol • Bioethanol • Biodiesel

10.1 Introduction Soil, as the most basic natural resource of our planet, plays an important role in the maintenance of the ecological balance of the communities. Soil functions as a vital living system that contains several biological elements that are key to ecosystem functions. It is by virtue of these functions the nature sustains the biological productivity of soil, maintains air and water quality and upholds plant, animal and human health (Nathan 2009). Owing to the rapid growth of industrialization and urbanization, the soil is being contaminated increasingly by various kinds of toxic, hazardous pollutants affecting large areas of agricultural land. The persistent and recalcitrant nature of these pollutants is a serious threat to everyone’s health and the environment. Consequently, the management o