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https://www.readbyqxmd.com/read/29778175/an-innovative-approach-to-minimize-excess-sludge-production-in-sewage-treatment-using-integrated-bioreactors
#1
Mahesh Mannacharaju, Prabhakaran Natarajan, Arivizhivendhan Kannan Villalan, Madasamy Jothieswari, Swarnalatha Somasundaram, Sekaran Ganesan
The present investigation deals with an application of integrated sequential oxic and anoxic bioreactor (SOABR) and fluidized immobilized cell carbon oxidation (FICCO) reactor for the treatment of domestic wastewater with minimum sludge generation. The performance of integrated SOABR-FICCO system was evaluated on treating the domestic wastewater at hydraulic retention time (HRT) of 3hr and 6hr for 120days at organic loading rate (OLR) of 191±31mg/(L·hr). The influent wastewater was characterized by chemical oxygen demand (COD) 573±93mg/L; biochemical oxygen demand (BOD5 ) 197±35mg/L and total suspended solids (TSS) 450±136mg/L...
May 2018: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/29772508/resuscitation-of-starved-anaerobic-ammonium-oxidation-sludge-system-impacts-of-repeated-short-term-starvation
#2
Lihong Ye, Dong Li, Jie Zhang, Huiping Zeng
Starvation of biomass is common during underloading of bioreactors or sludge storage in biological wastewater treatment industries. The aim of this work was to study the impact of starvation modes on the nitrogen removal capacity of anaerobic ammonium oxidation (anammox) process in sequencing batch reactor (SBR). The repeated short-term starvation and reactivation experiments were performed to evaluate the response of anammox sludge system in the condition of 27 ± 1.5 °C and 320 min HRT. Moreover, the nitrogen removal ability of the anammox process was reactivated rapidly in the low substrate condition, then the total nitrogen (TN) removal efficiency reached 82...
May 4, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29763969/hormone-replacement-therapy-for-women-previously-treated-for-endometrial-cancer
#3
REVIEW
Katharine A Edey, Stuart Rundle, Martha Hickey
BACKGROUND: Endometrial cancer is the sixth most common cancer in women worldwide and most commonly occurs after the menopause (75%) (globocan.iarc.fr). About 319,000 new cases were diagnosed worldwide in 2012. Endometrial cancer is commonly considered as a potentially 'curable cancer,' as approximately 75% of cases are diagnosed before disease has spread outside the uterus (FIGO (International Federation of Gynecology and Obstetrics) stage I). The overall five-year survival for all stages is about 86%, and, if the cancer is confined to the uterus, the five-year survival rate may increase to 97%...
May 15, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29763858/the-oncologic-impact-of-hormone-replacement-therapy-in-premenopausal-breast-cancer-survivors-a-systematic-review
#4
REVIEW
Yimeng Wang, Naomi Lewin, Yazan Qaoud, A Nikoo Rajaee, Adena S Scheer
SYNOPSIS: This is the first systematic review to investigate the risk of recurrence in breast cancer survivors <50 years old who have used hormone replacement therapy (HRT). BACKGROUND: The risk of HRT in premenopausal breast cancer survivors is unclear. Due to the higher incidence of estrogen receptor negative tumours in women <50, the potential for HRT to promote breast cancer recurrence may differ from older age groups. METHODS: We performed a search of Medline, EMBASE and CINAHL through June 2016...
May 12, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29755978/development-of-an-effective-chain-elongation-process-from-acidified-food-waste-and-ethanol-into-n-caproate
#5
Mark Roghair, Yuchen Liu, David P B T B Strik, Ruud A Weusthuis, Marieke E Bruins, Cees J N Buisman
Introduction: Medium chain fatty acids (MCFAs), such as n-caproate, are potential valuable platform chemicals. MCFAs can be produced from low-grade organic residues by anaerobic reactor microbiomes through two subsequent biological processes: hydrolysis combined with acidogenesis and chain elongation. Continuous chain elongation with organic residues becomes effective when the targeted MCFA(s) are produced at high concentrations and rates, while excessive ethanol oxidation and base consumption are limited. The objective of this study was to develop an effective continuous chain elongation process with hydrolyzed and acidified food waste and additional ethanol...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29753237/process-integration-for-biological-sulfate-reduction-in-a-carbon-monoxide-fed-packed-bed-reactor
#6
Manoj Kumar, Arindam Sinharoy, Kannan Pakshirajan
This study examined immobilized anaerobic biomass for sulfate reduction using carbon monoxide (CO) as the sole carbon source under batch and continuous fed conditions. The immobilized bacteria with beads made of 10% polyvinyl alcohol (PVA) showed best results in terms of sulfate reduction (84 ± 3.52%) and CO utilization (98 ± 1.67%). The effect of hydraulic retention time (HRT), sulfate loading rate and CO loading rate on sulfate and CO removal was investigated employing a 1L packed bed bioreactor containing the immobilized biomass...
May 9, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29753171/one-year-operation-of-1000-l-modularized-microbial-fuel-cell-for-municipal-wastewater-treatment
#7
Peng Liang, Rui Duan, Yong Jiang, Xiaoyuan Zhang, Yong Qiu, Xia Huang
This study constructed a 1000 L modularized MFC system, the largest volume so far, to treat practical municipal wastewater. This MFC system was operated under two different water flow connections in two municipal wastewater treatment plants (MWTP) for more than one year to test their treating abilities for wastewater with both low (average 80 mg L-1 ) and high initial COD concentration (average 250 mg L-1 ). The COD concentration in the effluent from the MFC system remained below 50 mg L-1 with a removal rate of 70-90%, which stably met the level A of the first class in discharge standard of pollutants for MWTP of China...
May 2, 2018: Water Research
https://www.readbyqxmd.com/read/29751310/a-continuous-flow-mfc-cw-coupled-with-a-biofilm-electrode-reactor-to-simultaneously-attenuate-sulfamethoxazole-and-its-corresponding-resistance-genes
#8
Hua Li, Hai-Liang Song, Xiao-Li Yang, Shuai Zhang, Yu-Li Yang, Li-Min Zhang, Han Xu, Ya-Wen Wang
A continuous flow microbial fuel cell constructed wetland (MFC-CW) coupled with a biofilm electrode reactor (BER) system was constructed to remove sulfamethoxazole (SMX). The BER unit powered by the stacked MFC-CWs was used as a pretreatment unit, and effluent flowed into the MFC-CW for further degradation. The experimental results indicated that the removal rate of 2 or 4 mg/L SMX in a BER unit was nearly 90%, and the total removal rate in the coupled system was over 99%. As the hydraulic retention time (HRT) was reduced from 16 h to 4 h, the SMX removal rate in the BER decreased from 75% to 48%...
May 8, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29748796/electrochemical-treatment-of-humic-acid-using-particle-electrodes-ensembled-by-ordered-mesoporous-carbon
#9
Xue Li, Wenwen Zhang, Di Xie, Xiaoyu Wang, Wenjian Ye, Wenyan Liang
In order to degrade the macromolecular pollutant of humic acid, the powder ordered mesoporous carbon (POMC, average pore diameter 4.29 nm) was first applied for preparing the granular OMC (GOMC, Φ × H = 4 × 3-6 mm) as electrodes in a continuous three-dimensional (3D) electrochemical system. The POMC was synthesized by hard-templating method and characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), particle size distribution, N2 adsorption/desorption technology, and Fourier-transform infrared (FT-IR)...
May 10, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29739516/high-rate-treatment-of-hospital-wastewater-using-activated-sludge-process-induced-by-high-frequency-ultrasound
#10
Nasim Karami, Parviz Mohammadi, Aliakbar Zinatizadeh, Farzaneh Falahi, Nasrin Aghamohammadi
The biomass concentration of conventional activated sludge (CAS) process due to low sludge sedimentation in clarifiers is limited to 3000 mg/L. In this study, high-frequency ultrasound wave (1.8 MHz) was applied to enhance the CAS process performance using high Mixed Liquor Suspended Solid (MLSS) concentration. The study conducted using a pilot scale CAS bioreactor (with and without ultrasound) and their performance for treating a hospital wastewater were compared. Experimental conditions were designed based on a Central Composite Design (CCD)...
September 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29739027/-uveitic-secondary-glaucoma
#11
Claudia Lommatzsch, Carsten Heinz
An intraocular pressure increase with development of glaucomatous damage is a common complication of uveitis. The prevalence has a wide range depending on various factors such as the underlying uveitis type and the duration of the disease. Pathogenetically, a distinction must be made between a secondary angle closure component and the more frequently occurring open-angle glaucoma. In diagnostics, in addition to the clinical optic nerve head assessment, perimetry and tonometry, the use of imaging examination equipment, such as OCT and HRT, are recommended...
May 2018: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29731984/hormone-replacement-therapy-decreases-the-risk-of-tinnitus-in-menopausal-women-a-nationwide-study
#12
Hsin-Chien Chen, Chi-Hsiang Chung, Vincent C F Chen, Yu-Chi Wang, Wu-Chien Chien
The incidence and risk of tinnitus associated with hormone replacement therapy (HRT) in menopausal women have not yet been fully examined. We examined the medical records of menopausal women aged between 45 and 79 years from Taiwan's National Health Insurance Research Database of records between 1 January 2000 and 31 December 2010 to establish matched cohorts (13,920 HRT users and 41,760 nonusers). The incidence of tinnitus in HRT users and nonusers were matched 1:3 based on propensity-score matching over this ten year period...
April 13, 2018: Oncotarget
https://www.readbyqxmd.com/read/29729685/common-genetic-contributions-to-high-risk-trauma-exposure-and-self-injurious-thoughts-and-behaviors
#13
Leah S Richmond-Rakerd, Timothy J Trull, Ian R Gizer, Kristin McLaughlin, Emily M Scheiderer, Elliot C Nelson, Arpana Agrawal, Michael T Lynskey, Pamela A F Madden, Andrew C Heath, Dixie J Statham, Nicholas G Martin
BACKGROUND: Prior research has documented shared heritable contributions to non-suicidal self-injury (NSSI) and suicidal ideation (SI) as well as NSSI and suicide attempt (SA). In addition, trauma exposure has been implicated in risk for NSSI and suicide. Genetically informative studies are needed to determine common sources of liability to all three self-injurious thoughts and behaviors, and to clarify the nature of their associations with traumatic experiences. METHODS: Multivariate biometric modeling was conducted using data from 9526 twins [59% female, mean age = 31...
May 6, 2018: Psychological Medicine
https://www.readbyqxmd.com/read/29726742/isolation-and-characterization-of-novel-bacterial-strain-present-in-a-lab-scale-hybrid-uasb-reactor-treating-distillery-spent-wash
#14
R Thiyagu, P Sivarajan
Recalcitrant compounds degrading novel bacteria was isolated from lab scale hybrid UASB reactor treating distillery spent wash, enriched with biomass activity. The granules were subjected to SEM analysis to classify and isolate the bacterial strains. The strain was ubiquitous, mesophilic, gram-negative, motile, non-spore forming and cultivable optimally at 30°C at pH 7. Most potential isolates from the strains were subjected to 16S rRNA sequencing and branded as a member of diverse genera, gamma-proteobacteria, Stenotrophomonas sp...
May 4, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29721917/presentation-progression-and-predictors-of-ovarian-insufficiency-in-classic-galactosemia
#15
Allison B Frederick, Alison M Zinsli, Grace Carlock, Karen Conneely, Judith L Fridovich-Keil
Classic galactosemia (CG) is an inherited metabolic disorder that affects about 1 in 50,000 live births in the United States and many other countries. With the benefit of early detection by newborn screening and rapid dietary restriction of galactose, generally achieved by removing dairy from the diet, most affected infants are spared the acute and potentially lethal symptoms of disease. Despite early detection and life-long dietary intervention, however, most patients grow to experience a constellation of long-term complications that include premature ovarian insufficiency in the vast majority of girls and young women...
May 2, 2018: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29720036/anaerobic-acidification-of-sugar-containing-wastewater-for-biotechnological-production-of-organic-acids-and-ethanol
#16
Darwin, Wipa Charles, Ralf Cord-Ruwisch
Anaerobic acidification of sugars can produce some useful end-products such as alcohol, volatile fatty acids (e.g. acetate, propionate, and butyrate) and lactic acid. The production of end-products is highly dependent on factors including pH, temperature, hydraulic retention time and the types of sugar being fermented. Results of this current study indicate that the pH and hydraulic retention time played significant roles in determining the end products from the anaerobic acidification of maltose and glucose...
May 3, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29715139/bone-mineral-density-as-a-potential-predictive-factor-for-luminal-type-breast-cancer-in-postmenopausal-women
#17
Franco Lumachi, Stefano M M Basso, Valentina Camozzi, Roberto Spaziante, Paolo Ubiali, Mario Ermani
BACKGROUND/AIM: We performed a case-control study to evaluate whether bone mineral density (BMD) can be considered a potential predictive factor for luminal-type breast cancer (BC), that could be useful in constructing a predictive risk model. MATERIALS AND METHODS: The medical records of 297 postmenopausal women with luminal-type node-negative BC who underwent lumbar-spine dual-energy X-ray absorptiometry (DXA) with BMD measurement before surgery, were analyzed and compared with those of 297 age-matched randomly selected healthy controls...
May 2018: Anticancer Research
https://www.readbyqxmd.com/read/29713854/menopausal-hormone-therapy-and-the-risk-of-breast-cancer-by-histological-type-and-race-a-meta-analysis-of-randomized-controlled-trials-and-cohort-studies
#18
Sohyun Kim, Yeonsook Ko, Hwa Jeong Lee, Jung-Eun Lim
PURPOSE: This meta-analysis investigated the association between the risk of breast cancer and hormone replacement therapy (HRT). Various stratified analyses were performed according to race (Asian/Westerner), HRT type [all hormone therapies, estrogen-only therapy (ET), or combined estrogen-progestin therapy (EPT)], histological breast cancer type (ductal/lobular/mixed ductal-lobular), and estrogen receptor status (ER-positive/ER-negative). METHODS: A literature search was performed using Pubmed, Embase, and KoreaMed...
April 30, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29710615/dual-removal-of-phosphate-and-ammonium-from-high-concentrations-of-aquaculture-wastewaters-using-an-efficient-two-stage-infiltration-system
#19
Hongbin Yin, Chunhui Yang, Yanxia Jia, Huiui Chen, Xiaohong Gu
Nitrogen (N) and phosphorus (P) pollution from aquaculture has increased dramatically in recent years, and it is urgent to develop a cost-effective method to clean these polluted waters. The objective of this study is to investigate N and P removal using a two-stage infiltration system based on NaCl modified clinoptilolite (NCLP) and thermally-treated calcium-rich attapulgite (TCAP). Results from a batch study indicated that the maximum ammonium sorption capacity of NCLPs was in the range of 6.64 to 7.27 mg...
April 20, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29710224/hormone-replacement-therapy-after-oophorectomy-and-breast-cancer-risk-among-brca1-mutation-carriers
#20
Joanne Kotsopoulos, Jacek Gronwald, Beth Y Karlan, Tomasz Huzarski, Nadine Tung, Pal Moller, Susan Armel, Henry T Lynch, Leigha Senter, Andrea Eisen, Christian F Singer, William D Foulkes, Michelle R Jacobson, Ping Sun, Jan Lubinski, Steven A Narod
Importance: Prophylactic bilateral salpingo-oophorectomy is recommended for BRCA1 mutation carriers to prevent ovarian cancer. Whether or not hormone replacement therapy (HRT) initiated after oophorectomy is associated with an increased risk of breast cancer has not been evaluated in a prospective study. Objective: To determine the association between HRT use and BRCA1-associated breast cancer. Design, Setting, and Participants: A prospective, longitudinal cohort study of BRCA1 and BRCA2 mutation carriers from 80 participating centers in 17 countries was conducted between 1995 and 2017 with a mean follow-up of 7...
April 19, 2018: JAMA Oncology
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