Microbial diversity analysis indicated that the high salinity environment in the OMBR significantly affected the microbial communities. The flux decline in the OMBR was mainly attributed to the reduced driving force resulting from the salt accumulation, and the reversible fouling was the dominant forward osmosis (FO) membrane fouling
in the OMBR. (C) 2014 Elsevier Ltd. All rights reserved.”
“During fungal rock phosphate (RP) solubilization, a significant quantity of fluoride (F-) is released together with phosphorus (P), strongly inhibiting the process. In the present study, the effect of two F- adsorbents [activated alumina (Al2O3)and biochar] on RP solubilization by Aspergillus niger SN-38 was examined. Al2O3 adsorbed part of the F- released but also adsorbed soluble P, which makes it inappropriate for microbial RP solubilization systems. In contrast, biochar adsorbed only F- while enhancing phosphate solubilization 3-fold, leading
to the accumulation of up to 160 mg of P per liter. By comparing the values of F- measured in solution at the end of incubation and those from a predictive model, it was estimated that up to 19 mg of F- per liter can be removed from solution by biochar when added at 3 g liter(-1) to the culture medium. Thus, biochar acted as an F- sink during RP solubilization and led to an F- concentration in solution that was less inhibitory to the process. In the presence of biochar, A. Selleck LY2606368 niger produced larger amounts of citric, gluconic, and oxalic acids, whether RP was present or not. Our results show that biochar
enhances RP solubilization through two interrelated processes: partial removal of the released F- and increased organic acid production. Given the importance of organic acids for P solubilization and that most of the RPs contain high concentrations of F-, the proposed solubilization system offers an important technological improvement for the microbial production of soluble P fertilizers from RP.”
“The study of a hernia sac rarely provides the evidence of a primary or metastatic malignant epithelial tumor. We have reviewed our institutional experience with malignant epithelial tumors found in a hernia sac with the purpose of evaluating cases present/manifesting in the sac, gross appearance, ASP2215 cell line histologic type, primary tumor sites, staging, and patient outcome. A total of 8,435 adult patients underwent inguinal, femoral, umbilical or abdominal hernia repair in our hospitals. Twelve (0.14 %) patients had a malignant epithelial tumor in the hernia sac. Only one of these tumors was primary and the rest metastatic. Six out of twelve tumors (50.0 %), all of them metastatic, were discovered after hernia repair (0.07 %). The mean age of the 12 patients was 68.7 +/- A 15.2 years (range 43-90 years). Eight patients were male (66.7 %). Six tumors were located in inguinal (50.0 %), five in umbilical (41.7 %), and one in abdominal (8.3 %) hernia sacs. Gastrointestinal cases comprised 50.