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Ultrasound sludge

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https://www.readbyqxmd.com/read/28529051/ultrasound-assisted-biogas-production-from-co-digestion-of-wastewater-sludges-and-agricultural-wastes-comparison-with-microwave-pre-treatment
#1
B Aylin Alagöz, Orhan Yenigün, Ayşen Erdinçler
This study investigates the effect of ultrasonication and microwave sludge disintegration/pre-treatment techniques on the anaerobic co-digestion efficiency of wastewater sludges with olive and grape pomaces. The effects of both co-digestion and sludge pre-treatment techniques were evaluated in terms of the organic removal efficiency and the biogas production. The "co-digestion" of wastewater sludge with both types of pomaces was revealed to be a much more efficient way for the biogas production compared to the single (mono) sludge digestion...
May 11, 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28499592/risk-factors-for-poor-outcomes-of-children-with-acute-acalculous-cholecystitis
#2
Yi-An Lu, Cheng-Hsun Chiu, Man-Shan Kong, Han-I Wang, Hsun-Chin Chao, Chien-Chang Chen
BACKGROUND: Acute acalculous cholecystitis (AAC) is generally considered to be a mild disease in children; however, if left untreated or treated without caution, AAC can lead to severe outcomes, such as death. The objectives of this study were to present the clinical features and identify the predictors of mortality in pediatric AAC. METHODS: Patients diagnosed with AAC between 2005 and 2012 were enrolled. AAC was defined by the presence of fever and an echo-proven thickened gallbladder wall exceeding 4 mm...
March 25, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/28475436/efficacy-of-methanogenic-biomass-acclimation-in-mesophilic-anaerobic-digestion-of-ultrasound-pretreated-sludge
#3
M C Gagliano, A Gallipoli, S Rossetti, C M Braguglia
Methanogenic biomass plays a key role with regards methane production during anaerobic bioconversion of organic substrates. In this study, the effect of two different acclimated inocula on digestion performances was investigated by means of anaerobic batch tests on untreated and sonicated waste activated sludge. Organics solubilisation and removal kinetics, the abundance and physiological conditions of archaeal cells on ultimate methane yield were evaluated. The simultaneous presence of Methanosarcina and Methanosaeta in the archaeal biomass, the higher initial archaeal cells relative abundance and their occurrence in the aggregated forms were the main factors positively affecting the conversion into methane...
May 5, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28376638/transabdominal-collection-of-amniotic-fluid-sludge-and-identification-of-candida-albicans-intra-amniotic-infection
#4
Juan P Kusanovic, Roberto Romero, Carolina Martinovic, Karla Silva, Offer Erez, Eli Maymon, Francisco Díaz, Fernando Ferrer, Rafael Valdés, Víctor Córdova, Paula Vargas, María Elena Nilo, Patricio Le Cerf
A G3P2 patient who conceived while using an intrauterine contraceptive device (IUD) presented at 20 weeks of gestation with mild irregular uterine contractions and vaginal bleeding. Sonographic examination at admission showed the presence of dense amniotic fluid "sludge" and a long sonographic uterine cervix (42 mm). To assess the microbiologic significance of amniotic fluid "sludge", we performed a transabdominal amniocentesis. The procedure was performed under real-time ultrasound, and fluid resembling pus at gross examination was noted...
May 3, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28350710/physical-chemistry-of-bile-detailed-pathogenesis-of-cholelithiasis
#5
Malak Itani, Theodore J Dubinsky
Despite the overwhelming prevalence of cholelithiasis, many health care professionals are not familiar with the basic pathophysiology of gallstone formation. This article provides an overview of the biochemical pathways related to bile, with a focus on the physical chemistry of bile. We describe the important factors in bile synthesis and secretion that affect the composition of bile and consequently its liquid state. Within this biochemical background lies the foundation for understanding the clinical and sonographic manifestation of cholelithiasis, including the pathophysiology of cholesterol crystallization, gallbladder sludge, and gallstones...
March 27, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28332173/combined-ultrasound-with-fenton-treatment-for-the-degradation-of-carcinogenic-polycyclic-aromatic-hydrocarbons-in-textile-dying-sludge
#6
Jian-Hao Zhang, Hai-Yuan Zou, Xun-An Ning, Mei-Qing Lin, Chang-Min Chen, Tai-Cheng An, Jian Sun
To develop an effective method to remove the toxic and carcinogenic polycyclic aromatic hydrocarbons (CPAHs) from textile dyeing sludge, five CPAHs were selected to investigate the degradation efficiencies using ultrasound combined with Fenton process (US/Fenton). The results showed that the synergistic effect of the US/Fenton process on the degradation of CPAHs in textile dyeing sludge was significant with the synergy degree of 30.4. During the US/Fenton process, low ultrasonic density showed significant advantage in degrading the CPAHs in textile dyeing sludge...
March 22, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28319766/sequential-ultrasound-and-low-temperature-thermal-pretreatment-process-optimization-and-influence-on-sewage-sludge-solubilization-enzyme-activity-and-anaerobic-digestion
#7
Patricio Neumann, Zenón González, Gladys Vidal
The influence of sequential ultrasound and low-temperature (55°C) thermal pretreatment on sewage sludge solubilization, enzyme activity and anaerobic digestion was assessed. The pretreatment led to significant increases of 427-1030% and 230-674% in the soluble concentrations of carbohydrates and proteins, respectively, and 1.6-4.3 times higher enzymatic activities in the soluble phase of the sludge. Optimal conditions for chemical oxygen demand solubilization were determined at 59.3kg/L total solids (TS) concentration, 30,500kJ/kg TS specific energy and 13h thermal treatment time using response surface methodology...
March 9, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28273606/an-impressive-choledochal-cyst-and-its-surgical-resection
#8
Nhu Thao Nguyen Galván, Kayla Kumm, Dor Yoeli, Ellen Witte, Michael Kueht, Ronald Timothy Cotton, Abbas Rana, Christine A O'Mahony, John A Goss
INTRODUCTION: Choledochal cysts are rare congenital dilations of the biliary tree that can present with non-specific symptoms such as abdominal pain, jaundice, cholelithiasis and pancreatitis. Although most commonly identified in children, they can be found in the adult population. However, because of the non-specific symptoms, this diagnosis may be difficult to make in the adult. A physician therefore must keep this diagnosis within their differential, as it may arise in an unexpected patient population who may present with a convoluted work up...
February 21, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28140636/bile-acid-composition-of-gallbladder-contents-in-dogs-with-gallbladder-mucocele-and-biliary-sludge
#9
Toshiaki Kakimoto, Hideyuki Kanemoto, Kenjiro Fukushima, Koichi Ohno, Hajime Tsujimoto
OBJECTIVE To examine bile acid composition of gallbladder contents in dogs with gallbladder mucocele and biliary sludge. ANIMALS 18 dogs with gallbladder mucocele (GBM group), 8 dogs with immobile biliary sludge (i-BS group), 17 dogs with mobile biliary sludge (m-BS group), and 14 healthy dogs (control group). PROCEDURES Samples of gallbladder contents were obtained by use of percutaneous ultrasound-guided cholecystocentesis or during cholecystectomy or necropsy. Concentrations of 15 bile acids were determined by use of highperformance liquid chromatography, and a bile acid compositional ratio was calculated for each group...
February 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28105246/hepatobiliary-ultrasonographic-abnormalities-in-adult-patients-with-sickle-cell-anaemia-in-steady-state-in-ile-ife-nigeria
#10
Oluwatosin O Oguntoye, Dennis A Ndububa, Musah Yusuf, Rahman A Bolarinwa, Oluwagbemiga O Ayoola
BACKGROUND: Sickle cell anaemia (SCA) is associated with structural manifestations in the hepatobiliary axis. This study aimed to investigate the hepatobiliary ultrasonographic abnormalities in adult patients with sickle cell anaemia in steady state attending the Haematology clinic of a federal tertiary health institution in Ile-Ife, Nigeria. MATERIAL/METHODS: Basic demographic data as well as right upper abdominal quadrant ultrasonography of 50 consecutive sickle cell anaemia patients were compared with those of 50 age- and sex-matched subjects with HbAA as controls...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28090475/use-of-omega-3-polyunsaturated-fatty-acids-to-treat-inspissated-bile-syndrome-a-case-report
#11
Woo Young Jun, Min Jeng Cho, Hye Seung Han, Sun Hwan Bae
Inspissated bile syndrome (IBS) is a rare condition in which thick intraluminal bile, including bile plugs, sludge, or stones, blocks the extrahepatic bile ducts in an infant. A 5-week-old female infant was admitted for evaluation of jaundice and acholic stool. Diagnostic tests, including ultrasound sonography, magnetic resonance cholangiopancreatography, and a hepatobiliary scan, were not conclusive. Although the diagnosis was unclear, the clinical and laboratory findings improved gradually on administration of urodeoxycholic acid and lipid emulsion containing omega-3 polyunsaturated fatty acids (PUFAs) for 3 weeks...
December 2016: Pediatric Gastroenterology, Hepatology & Nutrition
https://www.readbyqxmd.com/read/28069218/evaluation-of-a-biological-wastewater-treatment-system-combining-an-osa-process-with-ultrasound-for-sludge-reduction
#12
P M Romero-Pareja, C A Aragon, J M Quiroga, M D Coello
Sludge production is an undesirable by-product of biological wastewater treatment. The oxic-settling-anaerobic (OSA) process constitutes one of the most promising techniques for reducing the sludge produced at the treatment plant without negative consequences for its overall performance. In the present study, the OSA process is applied in combination with ultrasound treatment, a lysis technique, in a lab-scale wastewater treatment plant to assess whether sludge reduction is enhanced as a result of mechanical treatment...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28006754/influence-of-extracellular-polymeric-substances-eps-treated-by-combined-ultrasound-pretreatment-and-chemical-re-flocculation-on-water-treatment-sludge-settling-performance
#13
Wei Chen, Xiaohong Gao, Hang Xu, Yan Cai, Jianfeng Cui
Extracellular polymeric substances (EPS) are high molecular weight polymers and play a significant role in floc stability, floc size, bioflocculation and sludge settleability. The destruction and reconstruction of EPS improve the performance of solid-water separation processes. In this study, the influence of combined ultrasound pretreatment and chemical re-flocculation on the spatial distribution and composition of EPS was examined. Settleability efficiency demonstrated that the optimal operating condition was an ultrasound pretreatment time of 15 min at pH 6...
March 2017: Chemosphere
https://www.readbyqxmd.com/read/28002780/study-on-optimization-of-process-parameters-for-enhancing-the-multi-hydrolytic-enzyme-activity-in-garbage-enzyme-produced-from-preconsumer-organic-waste
#14
C Arun, P Sivashanmugam
The garbage enzymes produced from preconsumer organic waste containing multi hydrolytic enzyme activity which helps to solubilize the waste activated sludge. The continuous production of garbage enzyme and its scaling up process need a globe optimized condition. In present study the effect of fruit peel composition and sonication time on enzyme activity were investigated. Garbage enzyme produced from 6g pineapple peels: 4g citrus peels pre-treated with ultrasound for 20min shows higher hydrolytic enzymes activity...
February 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27898319/assessing-the-usefulness-of-clostridia-spores-for-evaluating-sewage-sludge-hygienization
#15
Julia Martín-Díaz, Maria Ruiz-Hernando, Sergi Astals, Francisco Lucena
The capability of clostridia spores to act as pathogen indicators in sewage sludge treatment was investigated. Sulfite-reducing clostridia and E. coli levels were monitored during waste activated sludge pre-treatments (alkali and ultrasound) and its subsequent mesophilic anaerobic digestion. E. coli was maintained or reduced depending on treatment type and intensity. However, alkali pre-treatment (35.3gNaOH/kgTS) by itself and alkali (157gNaOH/kgTS) and ultrasound (27,000kJ/kgTS) pre-treatments followed by anaerobic digestion provoked reproducible clostridia increases...
February 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27773284/evaluation-on-the-air-borne-ultrasound-assisted-hot-air-convection-thin-layer-drying-performance-of-municipal-sewage-sludge
#16
G Y Sun, M Q Chen, Y W Huang
The thin-layer drying behavior of the municipal sewage sludge in a laboratory-scale hot air forced convective dryer assisted with air-borne ultrasound was investigated in between 70 and 130°C hot air temperatures. The drying kinetics in the convective process alone were compared to that for ultrasound-assist process at three ultrasound powers (30, 90, 150W). The average drying rates within whole drying temperature range at ultrasound powers of 30, 90 and 150W increased by about 22.6%, 27.8% and 32.2% compared with the convective drying alone (without ultrasound)...
January 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/27773226/enhanced-primary-sludge-sonication-by-heat-insulation-to-reclaim-carbon-source-for-biological-phosphorous-removal
#17
Qing Tian, Qi Wang, Yanbing Zhu, Fang Li, Lin Zhuang, Bo Yang
Ultrasound pretreatment is a potent step to disintegrate primary sludge (PS). The supernatant of sonicated PS is recycled as an alternative carbon source for biological phosphorus removal. In this study, we investigated the role of temperature on PS disintegration during sonication. We found that a temperature of 60°C yielded a dissolution rate of about 2% soluble chemical oxygen demand (SCOD) as compared to 7% SCOD using sonication at the specific energy (SE) of 7359kJ/kg TS. Using the SE of 6000kJ/kg TS with heat insulation during sonication, the SCOD dissolution rate of PS was similar to the result at the SE of 7051kJ/kg TS without heat insulation...
January 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/27684990/nanosized-zero-valent-iron-as-fenton-like-reagent-for-ultrasonic-assisted-leaching-of-zinc-from-blast-furnace-sludge
#18
Ivan Mikhailov, Sergey Komarov, Vera Levina, Alexander Gusev, Jean-Paul Issi, Denis Kuznetsov
Ultrasonic-assisted sulphuric acid leaching combined with a Fenton-like process, utilizing nanoscale zero-valent iron (nZVI), was investigated to enhance the leaching of zinc from the blast furnace sludge (BFS). The leaching of iron (Fe) and zinc (Zn) from the sludge was investigated using Milli-Q water/BFS ratio of 10 and varying the concentration of hydrogen peroxide, sulphuric acid, the temperature, the input energy for ultrasound irradiation, and the presence or absence of nZVI as a Fenton reagent. The results showed that with 1g/l addition of nZVI and 0...
September 22, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27660187/microstructural-strength-deterioration-of-aerobic-granule-sludge-under-organic-loading-swap
#19
Chunli Wan, Yanggui Shen, Si Chen, Xiang Liu, Guangmin Liu, Juin-Yih Lai, Duu-Jong Lee
This study revealed that the gross indicators commonly adopted for monitoring the performance of aerobic granular sludge processes are not capable of probing the microstructural deterioration of granule interior upon organic loading swaps. These granules subjected to loading swaps retained their global characteristics: appearances, sizes and settling velocities, chemical oxygen demand (COD) and ammonia-nitrogen removal capacities. However, the granule interior strength, as determined by ultrasound method, was largely weakened upon COD switch-off and was not recovered in the subsequent COD re-supply stage...
December 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27521022/modeling-optimization-and-evaluation-of-tightly-bound-extracellular-polymeric-substances-extraction-by-sonication
#20
Fangxu Jia, Qing Yang, Jinhao Han, Xiuhong Liu, Xiyao Li, Yongzhen Peng
Tightly bound extracellular polymeric substances (TB-EPS) are important components of sludge, playing a crucial role in the behavior of activated sludge. They are located in the innermost layer of EPS which closely combine with the cell surface and are difficult to be extracted. To fully understand the role of TB-EPS, it is extremely important to find an appropriate TB-EPS extraction protocol, which provides maximum yields of TB-EPS under the premise of minimal contribution of cell lysis. Ultrasonic method has been widely applied for TB-EPS extraction due to its unique advantages, but no one has developed a systematic and scientifically optimized method for this protocol...
October 2016: Applied Microbiology and Biotechnology
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