O efeito da aplicação de biossólido na distribuição e extração de Cr, Cu, Ni, Pb e Zn foi avaliado em solos Molisol de uma importante zona destinada à agricultura no Chile central. Massas de 15 e 30 Mg ha de biossólidos foram adicionadas aos solos e os mesmos foram incubados por 60 dias sob condições controladas de umidade e temperatura. Quatro biossólidos domésticos foram obtidos em uma das pl...

Sewage sludge (SS) is a biosolid that includes nutrients, organic matter, and mixture of micropollutants pathogens. Regarding its final disposal, several criteria should be met to avoid the dissemination included in environment. Hence, an adequate treatment prior SS disposal highly required. Solar drying being acknowledged as sustainable process treatment, yet it still unclear what extent this ...

Though previous studies demonstrate the utility of nitrogen and carbon stable isotope ratios (?15N ?13C, respectively) in bivalve soft tissues as biogeochemical proxies, it is necessary to develop alternative proxies for environmental reconstructions when are unavailable, such with fossils or museum-archived specimens. This study assesses reliability ?15N values carbonate-bound organic matrix (...

Site geology: The geology of the Oak Park site is one of limestone-drift materials overlying regional limestone-bedrock (over which two broad groups of soils occur: light-textured gravelly soils derived from limestone, and more heavy-textured soils derived from till). The soil underlying Miscanthus-plantations used in the experiments the former type, with a perched clay/subsoil layer under the ...

This is the first in a series of three papers describing combustion of biosolids in a 5-kW bubbling fluidized bed, the ash chemistry, and possible application of the ash produced as a fertilizing agent. This part of the study aims to clarify whether the distribution of main ash forming elements from biosolids can be changed by modifying the fuel matrix, the crystalline compounds of which can be...

A utilização de resíduos orgânicos na composição substratos desempenha um papel fundamental ao promover o crescimento mudas espécies florestais, melhorando a qualidade física e química do substrato assim consequentemente nos ganhos para produção no viveiro. O estudo teve como objetivo avaliar uso biossólido casca ovo galinácea formulação Handroanthus chrysotrichus (Mart. ex DC.) Mattos. experim...

Adsorption of sulfur dioxide on carbonaceous materials has been extensively studied (1-18). Activated carbon and activated carbon fibers have been found to be efficient adsorbents for the low temperature removal of SO2. It is believed that sulfur dioxide is adsorbed with two adsorption energies on activated carbons (3-12). The low energy, about 50 kJ/mol, corresponds to weak physical adsorption...

Priester et al. (1) recently investigated the growth of soybean in soil amended with ZnO and CeO2 manufactured nanomaterials (MNMs). It is laudable that the study used soil: Too few studies to date do this. However, we question the agronomic and environmental relevance of this study because of a lack of control experiments with a soluble salt (for ZnO) and with larger-scale particles (for ZnO o...