Papermaking machinery Energy utilization 3 Paper products 3 Papermaking 3 Dryers (equipment) 2 Drying 2 Energy efficiency 2 Paper 2 Paper and pulp industry 2 Paper drying 2 Paper machine 2 Process parameters 2 'current 1 Atomic force microscopy 1 Average diameter 1 Bioremediation 1 Biotechnological applications 1 Biotechnology 1 Case-studies 1 Cellulose 1 Cellulose nanofibres 1 Containers 1 Cylinders (shapes) 1 De-inking sludges 1 Deinking 1 Deinking sludge 1 Direct contact 1 Drying process 1 Drying technology 1 Economic challenges 1