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Carvalho M.A.F.,Pinto I.O.,Sarmento M.I.,Carvalho P.H.N.,da Silva R.S.,Rocha J.P.L.,Sarmento R.A. 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.3
Eucalyptus gall wasp, Leptocybe invasa is one of the most important invasive pests of Eucalyptus (Myrtaceae) and has been reported in new cultivation areas worldwide. This pest causes severe damage to susceptible plants of the genus Eucalyptus, where it induces galls in the midribs and petioles of young leaves and the internodes of branch and apices. In this work, we evaluated the response of Eucalyptus clones (E. urophylla (Urophylla) and two clone hybrids, one of the E. urophylla × E. camaldulensis (Urocam) and other of E. urophylla × E. grandis (Urograndis) crossings.) submitted to L. invasa collected from areas where L. invasa was recently reported. Our results show that the eucalypt materials cultivated in the areas where L. invasa were reported sensitive to L. invasa attacks. However, the wasp causes fewer galls in the Urocam clone. Thus, the Urocam clone can be preferred for use to reduce population growth of L. invasa in Brazilian savannah areas.
Sustainability of kraft pulp mills: Bleaching technologies and sequences with reduced water use
A.M. Sousa,I.S.S. Pinto,L. Machado,L. Gando-Ferreira,M.J. Quina 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.125 No.-
The Kraft pulp industry is a relevant industrial sector in many countries with a considerable social, economic,and environmental impact. Thus, sustainability is the adequate framework to address this activitysector. This work presents a review of the literature, with a particular focus on the bleaching area and itsrelevance in reducing water use. The sustainability reports of the most prominent pulp and paper companieswere analyzed, considering their specific water utilization and the sustainability targets they haveoutlined. The most industrially applied bleaching sequences were also addressed and the stages of thestate-of-the-art sequences were analyzed (elemental chlorine free – ECF bleaching). Moreover, in thisreview, a detailed analysis of a sequence used on an industrial scale was carried out, highlighting thewashing steps and the measures that are taken to minimize water use. The main limitations to the minimizationof water use were identified, being deposit formation the major problem. Measures to overcomethese limitations, as well as future perspectives were discussed. Due to the shortage offreshwater nearby some pulp and paper production sites, there will continue to be great pressure inthe future to reduce water utilization, especially in the bleaching area.