keyword
MENU ▼
Read by QxMD icon Read
search

Cod

keyword
https://www.readbyqxmd.com/read/28107720/enhanced-treatment-performance-of-coking-wastewater-and-reduced-membrane-fouling-using-a-novel-embr
#1
Bei Jiang, Cong Du, Shengnan Shi, Liang Tan, Meidi Li, Jiaxin Liu, Lanlan Xue, Xiangyu Ji
A novel EMBR (electric field applied in MBR) by placing stainless steel mesh cathode inside a flat membrane module and stainless steel mesh anode outside the module was built and operated to enhance the treatment performance of coking wastewater containing phenol, pyridine and quinoline and reduce the membrane fouling. The degradation rates of COD, phenol, pyridine and quinoline in EMBR with electric field (reactor A) were significantly higher than the sum of EMBR without electric field (reactor B) and only electro-catalytic degradation during the long-term treatment, confirming that a coupling effect was existed between biodegradation and electro-catalytic degradation process...
January 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28105595/bioelectrochemical-anaerobic-sewage-treatment-technology-for-arctic-communities
#2
Boris Tartakovsky, Yehuda Kleiner, Michelle-France Manuel
This study describes a novel wastewater treatment technology suitable for small remote northern communities. The technology is based on an enhanced biodegradation of organic carbon through a combination of anaerobic methanogenic and microbial electrochemical (bioelectrochemical) degradation processes leading to biomethane production. The microbial electrochemical degradation is achieved in a membraneless flow-through bioanode-biocathode setup operating at an applied voltage below the water electrolysis threshold...
January 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28104552/a-novel-salt-tolerant-bacterial-consortium-for-biodegradation-of-saline-and-recalcitrant-petrochemical-wastewater
#3
Mehdi Ahmadi, Sahand Jorfi, Raheleh Kujlu, Shokouh Ghafari, Reza Darvishi Cheshmeh Soltani, Nematollah Jaafarzadeh Haghighifard
Treatment of a saline petrochemical wastewater with BOD5/COD ratio of less than 0.1 was investigated using a consortium consisted of three isolated salt-tolerant bacteria namely, Kocuria turfanesis, Halomonas alkaliphila and Pseudomonas balearica. Selected bacteria were isolated from petrochemical wastewater containing mineral salt mediums of 3% salinity. A lab-scale activated sludge bioreactor was used for startup in batch mode operation and after obtaining the MLSS concentration of about 3000 mg/L, the operation was changed to continuous flow mode to determine the biokinetic coefficients under different organic loading rates of 0...
January 16, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28100185/an-improved-genome-assembly-uncovers-prolific-tandem-repeats-in-atlantic-cod
#4
Ole K Tørresen, Bastiaan Star, Sissel Jentoft, William B Reinar, Harald Grove, Jason R Miller, Brian P Walenz, James Knight, Jenny M Ekholm, Paul Peluso, Rolf B Edvardsen, Ave Tooming-Klunderud, Morten Skage, Sigbjørn Lien, Kjetill S Jakobsen, Alexander J Nederbragt
BACKGROUND: The first Atlantic cod (Gadus morhua) genome assembly published in 2011 was one of the early genome assemblies exclusively based on high-throughput 454 pyrosequencing. Since then, rapid advances in sequencing technologies have led to a multitude of assemblies generated for complex genomes, although many of these are of a fragmented nature with a significant fraction of bases in gaps. The development of long-read sequencing and improved software now enable the generation of more contiguous genome assemblies...
January 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28095107/bioremediation-of-petroleum-wastewater-by-hyper-phenol-tolerant-bacillus-cereus-preliminary-studies-with-laboratory-scale-batch-process
#5
Aditi Banerjee, Aloke K Ghoshal
Petroleum wastewater samples from oil refinery and oil exploration site were treated by hyper phenol-tolerant Bacillus cereus (AKG1 and AKG2) in laboratory-scale batch process to assess their bioremediation efficacy. Quality of the treated wastewater samples were analyzed in terms of removal of chemical oxygen demand (COD), total organic carbon (TOC) and ammonium nitrogen content, and improvement of biological oxygen demand (BOD). Adaptation of these bacteria to the toxic environment through structural changes in their cell membranes was also highlighted...
January 17, 2017: Bioengineered
https://www.readbyqxmd.com/read/28094156/removal-of-toxic-metals-during-biological-treatment-of-landfill-leachates
#6
T Robinson
Progressive implementation of the European Water Framework Directive has resulted in substantial changes in limits for discharges of heavy metals both to watercourses, and to sewer. The objective of this paper is to provide original, real, full-scale data obtained for removal of metals during aerobic biological leachate treatment, and also to report on studies carried out to look at further trace metal removal. Polishing technologies examined and investigated include; the incorporation of ultrafiltration (UF) membranes into biological treatment systems, the use of ion exchange, and of activated carbon polishing processes...
January 13, 2017: Waste Management
https://www.readbyqxmd.com/read/28093675/solar-photocatalytic-degradation-of-textile-effluent-with-tio2-zno-and-nb2o5-catalysts-assessment-of-photocatalytic-activity-and-mineralization
#7
Renata P Souza, Elizangela Ambrosio, Maisa T F Souza, Thábata K F S Freitas, Ana M Ferrari-Lima, Juliana C Garcia
The photocatalytic degradation of textile effluent was investigated using TiO2, ZnO, and Nb2O5 catalysts under solar irradiation. The procedures were carried out at ambient conditions in April 2014, with pH 3.0 and catalyst concentration of 0.250 g L(-1). The photocatalytic activity of the oxides was evaluated by means of kinetic efficiency (rate constant and half-life time), chemical oxygen demand reduction, and absorbance reduction at 228, 254, 284, 310, 350, 500, and 660 nm (λmáx). Mineralization in terms of the formation of inorganic ions and toxicity reduction using bioassays with Artemia salina were performed...
January 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28092755/coagulation-flocculation-sequential-with-fenton-or-photo-fenton-processes-as-an-alternative-for-the-industrial-textile-wastewater-treatment
#8
Edison GilPavas, Izabela Dobrosz-Gómez, Miguel Ángel Gómez-García
In this study, the industrial textile wastewater was treated using a chemical-based technique (coagulation-flocculation, C-F) sequential with an advanced oxidation process (AOP: Fenton or Photo-Fenton). During the C-F, Al2(SO4)3 was used as coagulant and its optimal dose was determined using the jar test. The following operational conditions of C-F, maximizing the organic matter removal, were determined: 700 mg/L of Al2(SO4)3 at pH = 9.96. Thus, the C-F allowed to remove 98% of turbidity, 48% of Chemical Oxygen Demand (COD), and let to increase in the BOD5/COD ratio from 0...
January 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28092008/spatio-temporal-variation-of-septage-characteristics-of-a-semi-arid-metropolitan-city-in-a-developing-country
#9
D Krithika, Anu Rachel Thomas, Gomathy R Iyer, Martin Kranert, Ligy Philip
Septage is the solid sludge that accumulates in septic tanks over a period of time. Many of the developing countries in the world face the challenging task of septage management. Due to the high variability in the nature of septage, there is a need to study its physical and chemical characteristics in order to suggest a sustainable treatment methodology. The present study deals with the characterization of septage collected from different locations of Chennai city in India, in two different seasons (summer and winter)...
January 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28091994/source-analysis-of-organic-matter-in-swine-wastewater-after-anaerobic-digestion-with-eem-parafac
#10
Zhuo Zeng, Ping Zheng, Aqiang Ding, Meng Zhang, Ghulam Abbas, Wei Li
Swine wastewater is one of the most serious pollution sources, and it has attracted a great public concern in China. Anaerobic digestion technology is extensively used in swine wastewater treatment. However, the anaerobic digestion effluents are difficult to meet the discharge standard. The results from batch experiments showed that plenty of refractory organic matter remained in the effluents after mesophilic anaerobic digestion for 30 days. The effluent total COD (tCOD) and soluble COD (sCOD) were 483 and 324 mg/L, respectively, with the sCOD/tCOD ratio of 0...
January 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28091992/analysing-the-correlations-of-long-term-seasonal-water-quality-parameters-suspended-solids-and-total-dissolved-solids-in-a-shallow-reservoir-with-meteorological-factors
#11
Chen Zhang, Wenna Zhang, Yixuan Huang, Xueping Gao
To explore the correlations among water quality parameters, suspended solids (SS) and total dissolved solids (TDS) with meteorological factors in a shallow reservoir in China, the long-term variations of water quality were considered. A non-parametric regression method, generalized additive models (GAM), was used to analyse the correlations among eleven physicochemical and biological parameters as well as three meteorological factors (wind speed, rainfall and solar radiation) which we collected from 2000 to 2011...
January 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28091988/genotoxicity-and-cytotoxicity-reduction-of-the-polluted-urban-river-after-ecological-restoration-a-field-scale-study-of-jialu-river-in-northern-china
#12
Jie Sun, Rui Zhang, Long Qin, Haixiao Zhu, Yu Huang, Yingang Xue, Shuqing An, Xianchuan Xie, Aimin Li
To further treat the reclaimed municipal wastewater and rehabilitate the aquatic ecosystem of polluted urban rivers, an 18.5-km field-scale ecological restoration project was constructed along Jialu River, a polluted urban river which receives only reclaimed municipal wastewater from Zhengzhou City without natural upland water dilution. This study investigated the potential efficiency of water quality improvement, as well as genotoxicity and cytotoxicity reduction along the ecological restoration project of this polluted urban river...
January 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28090138/agility-training-in-young-elite-soccer-players-promising-results-compared-to-change-of-direction-drills
#13
A Chaalali, M Rouissi, M Chtara, A Owen, N L Bragazzi, W Moalla, A Chaouachi, M Amri, K Chamari
The aim of this study was to compare the effect of two different training programmes - change of direction (COD) vs. agility (AG) - on straight sprint (SS), COD and AG test performances in young elite soccer players. Thirty-two soccer players (age: 14.5±0.9 years; height: 171.2±5.1 cm; body mass: 56.4±7.1 kg, body fat: 10.3±2.3%) participated in a short-term (6 weeks) training study. Players were randomly assigned to two experimental groups - training with change of direction drills (COD-G, n=11) or using agility training (AG-G, n= 11) - and to a control group (CON-G, n=10)...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28089204/effect-of-low-aeration-rate-on-simultaneous-nitrification-and-denitrification-in-an-intermittent-aeration-aged-refuse-bioreactor-treating-leachate
#14
Xiaojie Sun, Hongxia Zhang, Zhaowen Cheng, Siming Wang
Three intermittent aeration aged refuse bioreactors (ARBs), A, B, and C, with aeration rates of 670, 1340, and 2010L/m(3) aged refuse·d in stage 1, and 670, 503, and 335L/m(3) aged refuse·d in stage 2 were constructed to evaluate the effect of low aeration rate on leachate treatment by simultaneous nitrification and denitrification (SND). Results show that SND can be achieved and improved by reasonably adjusting the aeration rate of the ARB. In stage 1, the average chemical oxygen demand (COD) removal rates of ARBs A, B, and C were 91%, 92%, and 93%, respectively...
January 11, 2017: Waste Management
https://www.readbyqxmd.com/read/28087920/spatial-and-temporal-variation-of-water-quality-in-the-bertam-catchment-cameron-highlands-malaysia
#15
G Rasul
The spatio-temporal variability of water quality associated with anthropogenic activities was studied for the Bertam River and its main tributaries within the Bertam Catchment, Cameron Highlands, Malaysia. A number of physico-chemical parameters of collected samples were analyzed to evaluate their spatio-temporal variability. Non-parametric statistical analysis showed significant temporal and spatial differences (p<0.05) in most of the parameters across the Catchment. Parameters except DO and COD displayed higher values in rainy season...
December 16, 2016: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28081042/detection-of-hydrocodone-and-morphine-as-metabolites-in-oral-fluid-by-lc-ms-ms-in-patients-prescribed-codeine
#16
Robert E West, Maria G Guevara, Charles Mikel, Ruben Gamez
A retrospective analysis of oral fluid drug testing results using LC-MS/MS was performed to determine the prevalence rates in oral fluid for codeine (COD) and 3 COD metabolites-morphine (MOR), norhydrocodone (NHC), and hydrocodone (HCOD). Oral fluid samples were collected using Quantisal oral fluid collection device (Immunalysis Inc.) and submitted to Millennium Health, LLC for the routine drug analysis by LC-MS/MS. Consistent with previously published literature, COD was the primary analyte detected in oral fluid after the use of COD...
February 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28076690/effect-of-intermittent-aeration-strategies-on-treatment-performance-and-microbial-community-of-an-ifas-reactor-treating-municipal-wastewater
#17
Nitin Kumar Singh, Akansha Bhatia, Absar Ahmad Kazmi
This study investigated the effect of various intermittent aeration (IA) cycles, characterized by the ratio of non-aeration to aeration time, on organics and nutrient removal, and microbial communities in an integrated fixed film activated sludge (IFAS) reactor treating municipal wastewater. Average effluent BOD, COD, TSS, TN and TP values were noted as 20, 50, 30, 12 and 1.5 mgL(-1), respectively in continuous aeration mode. A total of four operational conditions (run 1, continuous aeration; run 2, 150/30 min aeration on/off time; run 3, 120/60 min aeration on/off time; run 4, 90/60 min aeration on/off time) were investigated in IFAS reactor assessment...
January 11, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28076648/latent-class-profile-of-psychiatric-symptoms-and-treatment-utilization-in-a-sample-of-patients-with-co-occurring-disorders
#18
Luis Villalobos-Gallegos, Rodrigo Marín-Navarrete, Calos Roncero, Hugo González-Cantú
Objective: To identify symptom-based subgroups within a sample of patients with co-occurring disorders (CODs) and to analyze intersubgroup differences in mental health services utilization. Methods: Two hundred and fifteen patients with COD from an addiction clinic completed the Symptom Checklist 90-Revised. Subgroups were determined using latent class profile analysis. Services utilization data were collected from electronic records during a 3-year span. Results: The five-class model obtained the best fit (Bayesian information criteria [BIC] = 3,546...
January 9, 2017: Revista Brasileira de Psiquiatria
https://www.readbyqxmd.com/read/28067663/performance-of-a-stage-process-treating-combined-municipal-industrial-wastewater
#19
Antoine Prandota Trzcinski, Chong Wang, Dongqing Zhang, Wui Seng Ang, Li Leonard Lin, Terutake Niwa, Yasuhiro Fukuzaki, Wun Jern Ng
A biosorption column and a settling tank were operated for 6 months with combined municipal and industrial wastewaters (1 m(3)/hr) to study the effect of dissolved oxygen (DO) levels and Fe(3+) dosage on removal efficiency of dissolved and suspended organics prior to biological treatment. High DO (>0.4 mg/L) were found to be detrimental for soluble chemical oxygen demand (COD) removals and iron dosing (up to 20 ppm) did not improve the overall performance. The system performed significantly better at high loading rate (>20 kg COD...
January 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28067654/combined-process-of-electrocoagulation-and-photocatalytic-degradation-for-the-treatment-of-olive-washing-wastewater
#20
Hasan Ates, Nadir Dizge, H Cengiz Yatmaz
In this study, an electrocoagulation reactor (ECR) and photocatalytic reactor (PCR) were tested to understand the performance of combined electrocoagulation and photocatalytic-degradation of olive washing wastewater (OWW). The effects of initial pH (6.0, 6.9, 8.0, 9.0), applied voltage (10.0, 12.5, 15.0 V), and operating time (30, 60, 90, 120 min) were investigated in the electrocoagulation reactor when aluminum electrodes were used as both anode and cathode. The pH, conductivity, color, chemical oxygen demand (COD), and phenol were measured versus time to determine the efficiency of the ECR and PCR process...
January 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
keyword
keyword
22044
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"