Sustainability in Phosphorus Use: A Question of Water and Food Security

Pantano, Glaucia; Grosseli, Guilherme M.; Mozeto, Antônio A.; Fadini, Pedro S.

doi:10.5935/0100-4042.20160086

Cited by 30 publications

(32 citation statements)

References 77 publications

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“…TSI classifies the water bodies with respect to the trophic grade, that is, nutrient availability in water (Esteves, 2011). The main nutrient that causes eutrophication is phosphorus, which can be found in natural environments, in phosphate rocks, in the inflow of untreated domestic sewage, and associated with the use of fertilizers in agriculture (Pantano et al, 2016). TSI classifies a water body in six trophic classes, according to the total phosphorus concentrations in the water.…”

Section: Introductionmentioning

confidence: 99%

Land use and its impacts on the water quality of the Cachoeirinha Invernada Watershed, Guarulhos (SP)

Oliveira¹,

Vargas²,

Saad³

et al. 2018

Rev. ambiente água

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The urbanization process through which large urban centers have been passing has drastically affected the availability and especially the quality of water. The Cachoeirinha Invernada Watershed (CIW), located in the municipality of Guarulhos (State of São Paulo, Brazil), includes areas with different land use classes. This paper aims to correlate the spatial and temporal effects of land use and land cover on the water quality of the Cachoeirinha Invernada Watershed. In a period of 12 months and at six sampling points along the watershed, the physicochemical parameters temperature (T), pH, turbidity (TU), total solids (TS), electrical conductivity (EC), total phosphorus (TP), biochemical oxygen demand (BOD), as well as microbiological analysis (E. coli) were measured. Water quality was assessed using a modified version (WQIM) of the Water Quality Index (WQI) and the Trophic State Index (TSI). The areas surrounded by urban development presented a marked worsening in water quality, with the downstream point most affected and ranked as 'POOR'. From the evaluated parameters, what contributed most to water quality degradation of the Cachoeirinha Invernada Watershed (CIW) was E. coli, followed by BOD, and TP, all parameters related to the presence of sewage in the water. The need for the construction of sewerage and waste treatment, protection and recovery of riparian forests, and environmental education regarding waste disposal are necessary to significantly improve the environmental quality of the Cachoeirinha Invernada Watershed. correlacionar os efeitos espaciais e temporais do uso da terra e da cobertura do solo na qualidade da água dessa bacia hidrográfica.. Foram analisados, em um período de 12 meses e em seis pontos de amostragem na área da bacia hidrográfica, parâmetros físico-químicos como a temperatura (T), pH, turbidez (TU), sólidos totais (ST), condutividade elétrica (CE), fósforo total (FT), demanda bioquímica de oxigênio (DBO), bem como análise microbiológica (E. coli). A qualidade da água foi avaliada usando uma versão modificada (WQIM) do Índice de Qualidade da Água (IQA) e do Índice do Estado Trófico (IET). As áreas cercadas pelo desenvolvimento urbano apresentaram um acentuado agravamento na qualidade da água, com o ponto a jusante mais afetado e classificado como 'POBRE'. A partir dos parâmetros avaliados, o que mais contribuiu para a degradação da qualidade da água da BHCI foi E. coli, seguido de DBO e FT, parâmetros esses relacionados à presença de esgoto na água. A necessidade de construção de esgoto e tratamento de resíduos, proteção e recuperação de matas ciliares e educação ambiental com foco na eliminação de resíduos são necessárias para melhorar significativamente a qualidade ambiental da bacia hidrográfica Cachoeirinha Invernada.Palavras-chave: degradação ambiental, eutrofização, águas urbanas, poluição da água.

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Section: Introductionmentioning

confidence: 99%

Land use and its impacts on the water quality of the Cachoeirinha Invernada Watershed, Guarulhos (SP)

Oliveira¹,

Vargas²,

Saad³

et al. 2018

Rev. ambiente água

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“…Issues like water table contamination, and absence of phosphate and limestone reserves, are matters of concern. In such scenarios, the application of agroindustry-generated solid waste can be a more sustainable substitute and has been producing remarkable results in the literature (Fixen, 2009;Pantano et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Wood Ash as a Corrective and Fertilizer in Safflower Crop in Oxisol of Brazilian Cerrado

Bonfim-Silva¹,

Santos²,

Dourado³

et al. 2018

JAS

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This study aimed at estimating the wood ash as a corrective and fertilizer in the safflower crop. This study was done with respect to the development, growth, and production of safflower in response to the wood ash doses applied to Oxisol of the Brazilian Cerrado biome. Adopting the completely randomized design and using five wood ash doses (0, 8, 16, 24, 32 g dm -3 ) and six replicates, the experiments were performed under greenhouse conditions. Each experimental unit included a 2 dm 3 pot, filled with soil that had been incubated earlier for 30 days. The variables studied included soil pH, plant height (cm), stem diameter (mm), number of leaves (plant ) and root dry mass (g pot -1 ) Analysis of variance and subsequent regression test were performed for all the data using SISVAR software, at 5% probability for both. The variables internal and external diameter of the chapters and root volume showed no significant differences. The soil pH revealed a significant effect of the wood ash application tending towards linearity, as did the other vegetative variables of plant height, stem diameter, number of leaves and SPAD index. The productive constituents exhibited improved development when the wood ash was applied to the soil in doses of around 24 g dm -3 or more.

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“…On a practical scale, phosphate-containing products are mainly formed from phosphoric acid (H 3 PO 4 ). [2][3][4][5] Phosphate accumulates mainly as polyphosphate. Phosphoruscontaining storage compounds may be inorganic or organic.…”

Section: Introductionmentioning

confidence: 99%

“…The form of those of microbial origin depends on the microorganism involved. Orthophosphate (PO 4 3-) compounds of low-solubility are the simplest forms of phosphorus accumulation.…”

Section: Introductionmentioning

confidence: 99%

Biogenic Synthesis of Important Environmental Minerals: Magnesium Phosphate Compounds and Perspectives

Durán¹,

Fávaro²

2018

Quim. Nova

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Recebido em 18/12/2017; aceito em 22/01/2018; publicado na web em 22/02/2018The ecological processes in which metabolites with industrial or medical applications are produced are of great importance. Magnesium plays many important roles in environmental and medical applications. Phosphorus is obtained by mining. It is estimated to have a very limited half-life and expected to be depleted as a resource in 100 years. Its recovery by mining and subsequent marketing as phosphate has important environmental implications. These processes are part of an important recovery technology. Bacteria have contributed to the formation of minerals since the advent of life on Earth. Bacterial and/or fungal biomineralizations play a critical role in biogeochemical cycles. These processes have important technological and environmental applications. In many past publications dealing with bacterial and fungal recovery of phosphates as insoluble products, magnesium played an important role. This is a review of recent progress in the microbial recovery of biogenic magnesium phosphate compounds, their importance, and their roles in treatment of several human diseases.

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Sustainability in Phosphorus Use: A Question of Water and Food Security

Cited by 30 publications

References 77 publications

Land use and its impacts on the water quality of the Cachoeirinha Invernada Watershed, Guarulhos (SP)

Land use and its impacts on the water quality of the Cachoeirinha Invernada Watershed, Guarulhos (SP)

Wood Ash as a Corrective and Fertilizer in Safflower Crop in Oxisol of Brazilian Cerrado

Biogenic Synthesis of Important Environmental Minerals: Magnesium Phosphate Compounds and Perspectives

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