This study evaluates the benefits of mineral fertilizers replacement for biodigested vinasse. Data from experimental anaerobic digestion (AD) of vinasse were applied to support the analysis. Based on previous experiments, this assessment assumed that vinasse production could reach 2.38 × 10 7 m 3 /year generating around 66,585 MWh/year of electric energy from biogas burning in the Administrative Region of Campinas (ARC). This amount of energy could supply more than 103,000 inhabitants and avoid 35,892 tCO 2eq /year (from electric energy replacement). The biodigested vinasse might also reduce the total N, P, and K mineral fertilizers demand per hectare of sugarcane crop in 30%, 1%, and 46%, respectively, avoiding additional greenhouse gas emissions of 111,877 tCO 2 eq/year. There is no biodigested vinasse surplus for a moderate fertigation rate of 100 m 3 /ha, complying with local environmental laws related to nutrients excess side effects in areas destined to sugarcane crop. Notwithstanding, a Geographic Information System analysis for a small adjacent area to ARC indicated nine different fertigation rates, ranging from 50 to 100 m 3 /ha. Even though the general analysis for ARC shows high NPK replacement levels, the fertigation practices should be subsidized for robust soil analysis and adequate to safe environmental levels. A management tool can be designed using the results here presented to subsidize investments for AD widespread adoption by the sugarcane industry to catch a reasonable practice from the economic and environmental perspectives.

Despite the recent discoveries of considerable fossil fuel reserves, Brazil is one of the only great economic and industrial powers with very high amounts of renewable energy in its electricity matrix. Approximately 79.3% of the electric energy supply comes from renewable resources, of which hydroelectric power represents 70.6%. The two primary concerns regarding hydroelectricity are the damage caused to the environment by the construction of dams and the uncertainty of the supply in cases of long drought seasons. This article presents an analysis on the availability and energy exploitation of sugarcane straw and forest residues derived from eucalyptus for decentralized generation using a Geographic Information System–based model. The potential bioelectricity and bioethanol production from sugarcane and eucalyptus biomass in the Administrative Region of Campinas (ARC) is higher than the demand in this region. The results provide guidelines for designing alternatives to the intended Nationally Determined Contributions in Brazil within the scope of the ARC, and they can be used to provide energy empowerment, electric matrix diversification, and new policies that address the residue availability and demand.

Todos os dias os centros urbanos sofrem com o aumento da temperatura. Diante do aquecimento global, a degradação desses ambientes, traz riscos à saúde da população, desde o desconforto térmico até a ocorrência de doenças causadas pelo calor. Devido ao processo de urbanização, essa mudança na paisagem favorece a ocorrência do fenômeno da ilha de calor urbana (ICU), áreas urbanas com temperaturas mais elevadas que as áreas rurais vizinhas. Este fenômeno é realidade não em grandes municípios, mas também ocorre em cidades pequenas. O objetivo deste trabalho foi analisar a ocorrência de ICU em Ilha Solteira - SP, através do uso de dados de sensoriamento remoto, visando associar uma temperatura superficial com diferentes classes de uso e cobertura da terra. Para o propósito deste trabalho, utilizou-se uma imagem de satélite capturada na região do infravermelho (TIRS / Landsat-8) como classes de uso e ocupação do solo nas áreas de temperaturas mais altas, baseadas em imagens de alta resolução, no satélite Plêiades. Dado que as diferentes classes de uso e ocupação do solo influenciam diretamente a temperatura da superfície, observando-se a pavimentação asfáltica e o telhado cerâmico como valores mais altos de temperatura, nas áreas de ICU das pequenas cidades. Palavras-chave: Geotecnologia; Aquecimento Global; Infravermelho Termal.

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