There is much agriculture and non-agricultural waste that contains pozzolanic material. which can be recommended to use as a partial replacement for Ordinary Portland Cement (OPC). One of the waste products from sugar industries. which possess pozzolanic properties. https://www.roneverhart.com/MagnaFlow-2007-2008-Mitsubishi-Outlander-OEM-Grade-Federal-EPA-Compliant-Manifold-Catalytic-Converter/