The management and disposal of residues have become an industrial, economic, and environmental issue. Kraft process is widely employed in the production of pulp and, one of its characteristic is the almost complete recovery of the reagents used to obtain cellulose. However, this recovery process can generate residues such as Dregs. In order to recycle this residue, here we demonstrate for the first time the utilization of Dregs waste as filler in natural rubber (NR) composites in order to reinforce mechanical properties. Dregs waste was added to the NR in proportions of 10, 20, and 30 phr. Composites with 10 phr of Dregs showed the best result for abrasion resistance around 212.9 mm³. Meanwhile, NR composite with 20 phr of waste presented greater stress and strain at rupture, 12.44 MPa and 863%, respectively.

残留物的管理和处置已经成为工业，经济和环境问题。牛皮纸法广泛用于纸浆生产中，其特点之一是几乎完全回收了用于获得纤维素的试剂。但是，此恢复过程可能会产生残留物，例如残渣。为了回收这些残留物，我们在此首次证明了使用Dregs废料作为天然橡胶（NR）复合材料中的填料，以增强机械性能。将残渣废物以10、20和30 phr的比例添加到NR中。具有10 phr残渣的复合材料显示出约212.9 mm ³的最佳耐磨性。同时，含有20 phr废料的NR复合材料在断裂时表现出更大的应力和应变，分别为12.44 MPa和863％。