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RESUMO: Na Amazonia sao encontradas especies cujos frutos apresentam quantidade de oleo com valor economico para diferentes aplicacoes industriais. Este trabalho teve o objetivo de avaliar o potencial de producao de oleo do tucuma (Astrocaryum aculeatum) para a producao de biodiesel em diferentes areas do Estado do Acre. As variaveis avaliadas para a caracterizacao foram: producao, quantidade de polpa epicarpo+mesocarpo), castanha (endocarpo), amendoas (semente do interior do endocarpo), teores de lipidios totais na amendoa e na polpa e os atributos quimicos do solo. O teor de lipidios na amendoa foi de 21,9%, enquanto na polpa foi de 31,9%. Apesar da diversidade genetica, o tucuma e uma especie que possui boa produtividade em oleo, mesmo em solos acidos e com baixa fertilidade, apresentando potencial para ser utilizado como uma fonte adicional de renda pelas comunidades amazonidas. ABSTRACT: In the Amazon region species are found whose fruits have quantities of oil with economic value for various industrial applications. This study had the objective to evaluate the potential of oils extracted from tucuma palm fruit (Astrocaryum aculeatum) found in different areas of the Acre State. The yield, amount of pulp (mesocarp + epicarp), seed (endocarp), kernel (seed inside the endocarp), total lipid (almond and the pulp), and chemical soil properties were evaluated. The content of lipids in kernel was 21.9%, while the pulp was 31.9%. Despite the genetic diversity, the tucuma palm fruit is a species that has good bio-oil yield, even in acid soils with low fertility , with potential to be used as an additional source of income for communities in the Amazon region.

The objective of this work was to evaluate rates for applications of water treatment sludge (WTS) as a nutrient source for grasses and leguminous plants cropped in a soil degraded by tin mining in the Amazon Region (Natural Forest of Jamari, Rondonia State, Brazil). The treatments consisted of three rates of nitrogen supplied by WTS (100, 150 and 200 mg kg −1 soil), five combinations of plants, two controls (absolute control, without fertilization; and chemical control, soil+lime+chemical fertilizers). WTS modified the contents of macro and micronutrients in the degraded soil, but it was not, as used in the present study, sufficient for the rehabilitation of the degraded area.

Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T19:01:05Z No. of bitstreams: 1 S0103-90162005000500016.pdf: 169003 bytes, checksum: 931240c3bb03545860e10d0e7edbb957 (MD5) Made available in DSpace on 2013-08-22T19:01:05Z (GMT). No. of bitstreams: 1 S0103-90162005000500016.pdf: 169003 bytes, checksum: 931240c3bb03545860e10d0e7edbb957 (MD5) Previous issue date: 2005-10-01 Made available in DSpace on 2013-09-30T20:00:39Z (GMT). No. of bitstreams: 2 S0103-90162005000500016.pdf: 169003 bytes, checksum: 931240c3bb03545860e10d0e7edbb957 (MD5) S0103-90162005000500016.pdf.txt: 20423 bytes, checksum: e1c8128c67375fd1f573b48570b3411f (MD5) Previous issue date: 2005-10-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T15:15:32Z No. of bitstreams: 2 S0103-90162005000500016.pdf: 169003 bytes, checksum: 931240c3bb03545860e10d0e7edbb957 (MD5) S0103-90162005000500016.pdf.txt: 20423 bytes, checksum: e1c8128c67375fd1f573b48570b3411f (MD5) Made available in DSpace on 2014-05-20T15:15:32Z (GMT). No. of bitstreams: 2 S0103-90162005000500016.pdf: 169003 bytes, checksum: 931240c3bb03545860e10d0e7edbb957 (MD5) S0103-90162005000500016.pdf.txt: 20423 bytes, checksum: e1c8128c67375fd1f573b48570b3411f (MD5) Previous issue date: 2005-10-01 A aplicação do lodo de estação de tratamento de água (LETA) em solos degradados é uma alternativa tanto para disposição desse resíduo como para a recuperação do solo. Neste trabalho avaliaram-se os efeitos do LETA nos teores de metais pesados em um Latossolo degradado por mineração de cassiterita na Floresta Nacional do Jamari, RO, Brasil. Utilizou-se delineamento experimental inteiramente casualizado com cinco tratamentos: testemunha (n = 4); testemunha química, que recebeu apenas calagem (n = 4) e doses D100, D150 e D200 (respectivamente 100, 150 e 200 mg de N kg-1 solo na forma de LETA), aplicadas antes da calagem (n = 20). Após 30 dias da calagem, período em que o solo contido nos vasos foi mantido com teor de umidade próximo à capacidade de retenção, coletaram-se amostras de solo, que foram analisadas com relação aos teores totais e extraíveis de Fe, Cu, Mn, Zn, Cd, Pb, Ni e Cr. A aplicação de LETA aumentou os teores dos metais pesados do solo. A aplicação deste tipo de lodo em áreas degradadas pode causar impacto ambiental e, portanto, deve ser monitorada. The application of water treatment sludge (WTS) to degraded soil is an alternative for both residue disposal and degraded soil reclaim. This study evaluated effects of the application of water treatment sludge to a Typic Hapludox soil degraded by tin mining in the National Forest of Jamari, State of Rondonia, Brazil, on the content of heavy metals. A completely randomized experimental design with five treatments was used: control (n = 4); chemical control, which received only liming (n = 4); and rates D100, D150 and D200, which corresponded to 100, 150 and 200 mg of N-sludge kg-1 soil (n = 20), respectively. Thirty days after liming, period in which soil moisture was kept at 70% of the retention capacity, soil samples were taken and analyzed for total and extractable Fe, Cu, Mn, Zn, Cd, Pb, Ni, and Cr. The application of WTS increased heavy-metal contents in the degraded soil. Although heavy metals were below their respective critical limits, sludge application onto degraded areas may cause hazardous environmental impact and thus must be monitored. UNESP FCAV Depto. de Tecnologia UNESP FCAV Depto. de Tecnologia