Turning trash into an asset: a case study of prince sultan university campus waste Shabir Hussain Khahro, Tauha Hussain Ali, Zubair Ahmed Memon, Amjad Ali Panhwar and Anas Haribat E3S Web Conf., 167 (2020) 06003 Published online: 24 April 2020 DOI: 10.1051/e3sconf/202016706003