Removal of reactive dye from aqueous solution using thermally treated red mud

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Materiais derivados de hidróxidos duplos lamelares: síntese, caracterização e aplicação em adsorção e processos avançados de oxidação

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Análise do efeito de inseticidas neonicotinóides sobre a orientação e coleta de alimento de operárias de Apis mellifera L., 1758 (Hymenoptera: Apidae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Oxidação e remoção de ferro e manganês em águas para fins de abastecimento público ou industrial: uma abordagem geral

The iron and manganese ions are present in a high frequency in water source in Brazil. Despite of the frequency in which such problems occur, the way the problem is faced is still traditional, i.e. focusing on oxidative process instead of solid-liquid separation. The treatment can be very simple, in groundwater, or very complex, when metals are present together with organic matter in water. This article presents a review of principal works besides some important aspects about iron and manganese in natural water, occurrence, forms in natural water, organic complexes, oxidation and removal applying solid/liquid separation processes. Further, a new strategy for iron and manganese removal is presented. The information described does not exhaust the matter, so a large bibliography was cited at the end of the article.

Avaliação da persistência de microrganismos patogênicos em solo cultivado com eucalipto e fertilizado com lodo de esgoto sanitário

Pós-graduação em Ciência Florestal - FCA

Desempenho de gotejadores usando efluente de esgoto tratado para irrigação

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Processo de produção de composto orgânico derivado de resíduos industriais com aplicação no cultivo de alface

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Inclusão de cana-de-açúcar triturada em biodigestores abastecidos com dejetos de bovinos de corte confinado

The objective of this study was toevaluatethe effect of the co-digestion of triturated sugarcane with beef cattlerfeddlotmanure in continuous digestorsin the amount and quality of biogas and biofertilizer. To do so, the work was divided in three steps. The first and the second part lasted30 days each and evaluated the effect of the additionof 7% of triturated sugarcane in agreement with the followingtreatments:treatment, the digestors were supplied with a mixture of 0,250 kg of manure and 1,750 kg of water ;treatment 2, the digestors were supplied with a mixture of 0,250 kg of manure, 1,610 kg of water, and 0,140 kg of triturated sugarcane. To The third period lasted 30 days and evaluated the effect of adding 3.5% of sugarcane crushed. The data analyses was performed with randomized designusing SAS®program with level of significance of 5%. The digesters with sugarcane produced in the first period respectively 0.79, 0.0127, and 0.102 m3of total production, of biogas production per kilogram of substrate, and of total production per kilogram of manure versus 0.5, 0.0081, and 0.065 m3from the control treatment, respectively..In the thirdperiod,each variable had a total production of 0.76, 0.123, and 0.98 m3and the control treatment yielded 0.51, 0.065, and 0.0082 m3.In the second period,the total production per kilogram of solidand of volatile solids added were higher in the digesters without sugarcane (0.0093 and 0.438 m3) when compared to the digesters that had additionof 7% of cane(0.271 and 0.336 m3).

Effect of natural antimicrobials on microbiological and sensorial quality of fresh-cut cantaloupe melon

The effect of different natural antimicrobials on the microbiological and sensorial quality of fresh-cut Cantaloupe melons stored up to 10 days at 5°C was examined. Pieces of melon were washed for 1 min at 5ºC in water (control), vanillin (1000 mg/L and 2000 mg/L) or cinnamic acid (148.16 mg/L and 296.32 mg/L). Other antimicrobial treatments consisted of packaging the pieces of melon with an antimicrobial pad which contained cinnamic acid (148.16 mg/L and 296.32 mg/L). After 10 days of storage, significant differences among antimicrobials treatments and water treatment were found. In water treatment, the psychrotroph load was 3.63 ± 0.09 log cfu g-1 meanwhile on all antimicrobial treatments the values ranged from 3.04 ±0.13 log cfu g-1 to 3.28±0.1 log cfu g-1. Mesophilic growth in the control treatment averaged 6.79±0.06 log cfu g-1 meanwhile on antimicrobial treatments the counts were from 5.15±0.01 log cfu g-1 to 5.30±0.03 log cfu g-1. Total coliform levels were 7.8±0.1 log cfu g-1 when melon was washed in water, followed by washing with cinnamon (296.32 mg/L) at 6.5 log cfu g-1 and for the rest of the treatments were around 5.5 log cfu g-1. The treatments did not display differences among mould and yeast growth after 10 days of storage. The sensorial quality decreased throughout storage. However, at the end of storage, the scores ranged between 6.5 and 7, above the minimum level for marketability (level 5). Sensorial panelist noted a ‘sweet’ taste when vanillin was used as sanitizer. In all antimicrobial treatments, no relation was found between a higher dose and a higher microbial reduction. So, vanillin at 1000 mg/L in water or cinnamic acid at 148.16 mg/L provided in water dip or as a pad inside the trays could be optimal natural sanitizers to substitute the use of chlorine in fresh-cut products as Cantaloupe melon.

Avaliação do soro de leite como coagulante do látex de borracha natural

Pós-graduação em Ciência dos Materiais - FEIS

Agua de reuso e seu efeito sobre parâmetros fisiológicos em manjericão (Ocimum basilicum L.)

Pós-graduação em Agronomia (Proteção de Plantas) - FCA