Jacobi Group Jacobi Group is the world's largest manufacturer and distributor of coconut shell-based activated carbon. Additionally, Jacobi supplies other activated carbon types (coal, lignite, and wood-based grades). As well as Jacobi Carbons' core business, it also has two other business units in the group offering ion exchange resins and filter services with a fleet of mobile filter units and support sites across Europe, North America, and Asia. Jacobi provides treatment solutions for a variety of applications, such as water, air and gas, food and beverage, and mining. Jacobi Group