Authors: Abdulaziz M. Almutlaq, Mahmoud M. El-Halwagi
Addresses: Department of Chemical Engineering, Texas A&M University, College Station, TX 77843-3122, USA. ' Department of Chemical Engineering, Texas A&M University, College Station, TX 77843-3122, USA
Abstract: In this paper, an algebraic approach to the targeting of material recycle/reuse is developed. A cascade analysis is developed to maximise the recycle of process streams. Feasibility constraints and optimality conditions are derived based on insights from the graphical representation of material recycle pinch diagrams. The devised method is non-iterative, systematic and leads to the identification of rigorous targets for minimum usage of fresh resources, maximum recycle of process resources, and minimum discharge of waste. All these targets are determined ahead of detailed design of the recycle/reuse network. Two case studies are solved to illustrate the ease, rigour, and applicability of the developed targeting technique.
Keywords: mass integration; targeting; resource conservation; materials recycling; materials reuse; pinch analysis; algebra; cascade analysis; pollution prevention; environmental pollution; waste reduction.
International Journal of Environment and Pollution, 2007 Vol.29 No.1/2/3, pp.4 - 18
Published online: 15 Mar 2007 *Full-text access for editors Access for subscribers Purchase this article Comment on this article