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https://www.readbyqxmd.com/read/28938190/phytobeds-with-fimbristylis-dichotoma-and-ammannia-baccifera-for-treatment-of-real-textile-effluent-an-in-situ-treatment-anatomical-studies-and-toxicity-evaluation
#1
Suhas K Kadam, Vishal V Chandanshive, Niraj R Rane, Swapnil M Patil, Avinash R Gholave, Rahul V Khandare, Amrut R Bhosale, Byong-Hun Jeon, Sanjay P Govindwar
Fimbristylis dichotoma, Ammannia baccifera and their co-plantation consortium FA independently degraded Methyl Orange, simulated dye mixture and real textile effluent. Wild plants of F. dichotoma and A. baccifera with equal biomass showed 91% and 89% decolorization of Methyl Orange within 60h at a concentration of 50ppm, while 95% dye removal was achieved by consortium FA within 48h. Floating phyto-beds with co-plantation (F. dichotoma and A. baccifera) for the treatment of real textile effluent in a constructed wetland was observed to be more efficient and achieved 79%, 72%, 77%, 66% and 56% reductions in ADMI color value, COD, BOD, TDS and TSS of textile effluent, respectively...
September 19, 2017: Environmental Research
https://www.readbyqxmd.com/read/28937174/tantallacyclopentadiene-as-a-unique-metal-containing-diene-ligand-coordinated-to-nickel-for-preparing-tantalum-nickel-heterobimetallic-complexes
#2
Payel Laskar, Keishi Yamamoto, Anga Srinivas, Alexis Mifleur, Haruki Nagae, Hayato Tsurugi, Kazushi Mashima
A mononuclear tantallacyclopentadiene complex, TaCl3(C4H2tBu2) (3), serves as a unique ligand to nickel: the addition of Ni(COD)2 to 3 selectively afforded heterobimetallic Ta-Ni complex 4. The cyclooctadiene ligand bound to the nickel center in complex 4 was readily substituted by monodentate and bidentate phosphine ligands, such as dimethylphenylphosphine, 1,2-bis(diphenylphosphino)ethane, and 1,2-bis(diethylphosphino)ethane, to give the corresponding phosphine complexes 5, 6a, and 6b. We also examined a ligand substitution reaction with 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) to produce the corresponding Ta-Ni complex 7...
September 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28936577/highly-efficient-electro-oxidation-catalyst-under-ultra-low-voltage-for-degradation-of-aspirin
#3
Xiaolei Kang, Wei Sun, Limei Cao, Ji Yang
A novel cryptomelane-Ir (cry-Ir) electrode is prepared for Ir to enter into the cryptomelane (named as cry-Mn) structure and used for aspirin degradation. This catalyst can efficiently reduce the Ir usage from 85 to 34%. Also, the onset potential of cry-Ir is about 1.40 V and the over potential is about 0.34 V at 10 mA cm(-2), indicating that cry-Ir has an excellent oxygen evolution reaction (OER) activity to produce oxidizing species and can decrease electrolytic voltage during the electro-oxidation process...
September 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28934653/mixed-sulfate-reducing-bacteria-enriched-microbial-fuel-cells-for-the-treatment-of-wastewater-containing-copper
#4
Waheed Miran, Jiseon Jang, Mohsin Nawaz, Asif Shahzad, Sang Eun Jeong, Che Ok Jeon, Dae Sung Lee
Microbial fuel cells (MFCs) have been widely investigated for organic-based waste/substrate conversion to electricity. However, toxic compounds such as heavy metals are ubiquitous in organic waste and wastewater. In this work, a sulfate reducing bacteria (SRB)-enriched anode is used to study the impact of Cu(2+) on MFC performance. This study demonstrates that MFC performance is slightly enhanced at concentrations of up to 20 mg/L of Cu(2+), owing to the stimulating effect of metals on biological reactions...
September 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28932741/efficacies-of-various-anaerobic-starter-seeds-for-biogas-production-from-different-types-of-wastewater
#5
Pawinee Chaiprasert, Nasrul Hudayah, Chompoonut Auphimai
Various anaerobic starter seeds from different sources were investigated for their efficacies in treatment of different types of wastewater. Six combinations of starter seeds and wastewaters were selected out of 25 combination batch experiments and operated in semicontinuous reactors. It was noticed that the efficacies of various anaerobic starter seeds for biogas production from different types of wastewater in terms of reactor performance and stability were depended on wastewater characteristics and F/M ratio affecting microbial community and their microbial activities...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28931208/treatment-of-palm-oil-mill-effluent-using-combination-system-of-microbial-fuel-cell-and-anaerobic-membrane-bioreactor
#6
Sze Pin Tan, Hong Feng Kong, Mohammed J K Bashir, Po Kim Lo, Chii-Dong Ho, Choon Aun Ng
It was found that the operational temperature and the incorporation of microbial fuel cell (MFC) into anaerobic membrane bioreactor (AnMBR) have significant effect on AnMBRs' filtration performance. This paper addresses two issues (i) effect of temperature on AnMBR; and (ii) effect of MFC on AnMBRs' performance. The highest COD removal efficiency was observed in mesophilic condition (45°C). It was observed that the bioreactors operated at 45°C had the highest filtration resistance compared to others, albeit the excellent performance in removing the organic pollutant...
September 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28930877/the-impact-of-exercise-induced-muscle-damage-on-performance-test-outcomes-in-elite-female-basketball-players
#7
Kenji Doma, Anthony Leicht, Wade Sinclair, Moritz Schumann, Felipe Damas, Dean Burt, Carl Woods
The purpose of this study was two-fold. First, to examine the impact exercise-induced muscle damage (EIMD) on physical fitness qualities following a basketball-specific training session. Secondly, to determine the reproducibility of the sport-specific performance measures in elite female basketball players. Ten elite female basketball players (age 25.6 ± 4.5 years; height 1.8 ± 0.7m; body mass 76.7 ± 8.3kg) undertook a 90-minute training session involving repeated jumping, sprinting and game-simulated training...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28930288/trans-oceanic-genomic-divergence-of-atlantic-cod-ecotypes-is-associated-with-large-inversions
#8
P R Berg, B Star, C Pampoulie, I R Bradbury, P Bentzen, J A Hutchings, S Jentoft, K S Jakobsen
Chromosomal rearrangements such as inversions can play a crucial role in maintaining polymorphism underlying complex traits and contribute to the process of speciation. In Atlantic cod (Gadus morhua), inversions of several megabases have been identified that dominate genomic differentiation between migratory and nonmigratory ecotypes in the Northeast Atlantic. Here, we show that the same genomic regions display elevated divergence and contribute to ecotype divergence in the Northwest Atlantic as well. The occurrence of these inversions on both sides of the Atlantic Ocean reveals a common evolutionary origin, predating the >100 000-year-old trans-Atlantic separation of Atlantic cod...
September 20, 2017: Heredity
https://www.readbyqxmd.com/read/28930084/high-nervous-necrosis-virus-nnv-diversity-in-wild-wrasse-labridae-in-norway-and-sweden
#9
Kjetil Korsnes, Egil Karlsbakk, Cecilie K Skår, Lisbeth Sælemyr, Are Nylund, Bjørn Olav Kvamme, Stein Mortensen
Wild goldsinny wrasse Ctenolabrus rupestris, corkwing wrasse Symphodus melops and ballan wrasse Labrus bergylta were collected at 8 sampling sites in Sweden and Norway during summer 2014. Brain tissue from 466 wrasses were analyzed for nervous necrosis virus (NNV) infections by real-time RT-PCR, and positive samples were subjected to sequencing and phylogenetic analysis of partial segments of the RNA2 and RNA1 genes. This study shows that NNV is present in wild ballan, corkwing and goldsinny wrasse along the coastline of Sweden and Norway...
September 20, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28926968/weakening-pin-bone-attachment-in-fish-fillets-using-high-intensity-focused-ultrasound
#10
Martin H Skjelvareid, Svein Kristian Stormo, Kristín Anna Þórarinsdóttir, Karsten Heia
High Intensity Focused Ultrasound (HIFU) can be used for the localized heating of biological tissue through the conversion of sound waves into heat. Although originally developed for human medicine, HIFU may also be used to weaken the attachment of pin bones in fish fillets to enable easier removal of such bones. This was shown in the present study, where a series of experiments were performed on HIFU phantoms and fillets of cod and salmon. In thin objects such as fish fillets, the heat is mainly dissipated at the surfaces...
September 18, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28926920/a-comparative-study-on-the-process-efficiencies-and-microbial-community-structures-of-six-full-scale-wet-and-semi-dry-anaerobic-digesters-treating-food-wastes
#11
Gyuseong Han, Seung Gu Shin, Joonyeob Lee, Juhee Shin, Seokhwan Hwang
The purpose of this study was to investigate the effect of different types of food wastes on the process efficiency and microbial community structures in full-scale anaerobic digesters and to identify parameters that affect these criteria. Six full-scale anaerobic digesters were investigated; three were operated under "wet" condition (total solids TS≤10%), and three were run under "semi-dry" condition (10%≤TS≤20%). Removal efficiency of volatile solids was much higher in the wet digesters (75.2±3.8%) than in the semi-dry digesters (42...
September 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28926915/bioelectrochemical-methane-ch4-production-in-anaerobic-digestion-at-different-supplemental-voltages
#12
Kwang-Soon Choi, Sanath Kondaveeti, Booki Min
Microbial electrolysis cells (MECs) at various cell voltages (0.5, 0.7 1.0 and 1.5V) were operated in anaerobic fermentation. During the start-up period, the cathode potential decreased from -0.63 to -1.01V, and CH4 generation increased from 168 to 199ml. At an applied voltage of 1.0V, the highest methane yields of 408.3ml CH4/g COD glucose was obtained, which was 30.3% higher than in the control tests (313.4ml CH4/g COD glucose). The average current of 5.1mA was generated at 1.0V at which the maximum methane yield was obtained...
September 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28926913/enhanced-methanogenic-degradation-of-cellulose-containing-sewage-via-fungi-methanogens-syntrophic-association-in-an-anaerobic-membrane-bioreactor
#13
Rong Chen, Yulun Nie, Nobuyuki Tanaka, Qigui Niu, Qian Li, Yu-You Li
An anaerobic membrane bioreactor was configured for methanogenic degradation of cellulose-containing sewage. The degradation performance and microbial changes were evaluated under five hydraulic retention times (HRTs). The results indicated the methane production was largely enhanced with 92.6% efficiency of chemical oxygen demand (COD) converting to methane and 80% proportion of methane in produced biogas, meanwhile the biomass yield presented the fewest at the shortest HRT 8h. Enhanced methane production with decreased biomass yield was attributed to an association between fungi and methanogens...
September 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28926912/waste-treatment-and-energy-production-from-small-scale-wastewater-digesters
#14
Stephanie Lansing, Ayella Maile-Moskowitz, Alexander Eaton
Three tubular anaerobic digestion (AD) systems were installed in Haiti to treat black water (toilet-based wastewater), including a three cell 36m(3) clinic digester (CD), a two cell 2m(3) hotel digester (HD), and a three-cell 3m(3) farm digester (FD) for worker use. During digestion, total coliforms were reduced by 99.1%, E. coli by 98.5%, and chemical oxygen demand (COD) by 93.6%. Nutrients in the effluent averaged 99.4mg/L NH4(+) and 10.6mg/L PO4(2-), producing an effective organic fertilizer. Average biogas production in CD was 108L/d, with 65...
September 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28926910/removal-of-selected-nitrogenous-heterocyclic-compounds-in-biologically-pretreated-coal-gasification-wastewater-bpcgw-using-the-catalytic-ozonation-process-combined-with-the-two-stage-membrane-bioreactor-mbr
#15
Hao Zhu, Yuxing Han, Wencheng Ma, Hongjun Han, Weiwei Ma
Three identical anoxic-aerobic membrane bioreactors (MBRs) were operated in parallel for 300 consecutive days for raw (R1), ozonated (R2) and catalytic ozonated (R3) biologically pretreated coal gasification wastewater (BPCGW) treatment. The results demonstrated that catalytic ozonation process (COP) applied asa pretreatment remarkably improved the performance of the unsatisfactory single MBR. The overall removal efficiencies of COD, NH3-N and TN in R3 were 92.7%, 95.6% and 80.6%, respectively. In addition, typical nitrogenous heterocyclic compounds (NHCs) of quinoline, pyridine and indole were completely removed in the integrated process...
September 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28926787/a-novel-a-b-process-for-enhanced-biological-nutrient-removal-in-municipal-wastewater-reclamation
#16
Guangjing Xu, Han Wang, Jun Gu, Nan Shen, Zheng Qiu, Yan Zhou, Yu Liu
This study developed an innovative A-B process for enhanced nutrients removal in municipal wastewater reclamation, in which a micro-aerated moving bed biofilm reactor served as A-stage and a step-feed sequencing batch reactor (SBR) as B-stage. In the A-stage, 55% of COD and 15% of ammonia nitrogen was removed, while more than 88% of the total nitrogen was removed via nitritation and denitritation, together with 93% of phosphorous removal at the B-stage where ammonia oxidizing bacteria activity was significantly higher than nitrite oxidizing bacteria activity...
September 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28920752/treatment-of-synthetic-refinery-wastewater-in-anoxic-aerobic-sequential-moving-bed-reactors-and-sulphur-recovery
#17
Subrat Kumar Mallick, Saswati Chakraborty
Objective of the present study was to simultaneously biodegrade synthetic petroleum refinery wastewater containing phenol (750 mg/L), sulphide (750 mg/L), hydrocarbon (as emulsified diesel of 300 mg/L), ammonia-nitrogen (350 mg/L) at pH >9 in anoxic-aerobic sequential moving bed reactors. The optimum mixing speed of anoxic reactor was observed at 20 rpm and beyond that, removal rate remained constant. In anoxic reactor the minimum hydraulic retention time was observed to be 2 days for complete removal of sulphide, 40-50% removal of phenol and total hydrocarbons and 52% of sulphur recovery...
September 18, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28920138/study-on-the-sediment-characteristics-of-the-snow-in-a-typical-residential-community-and-its-integrated-biological-treatment-pattern-in-harbin
#18
Bin-Xia Xue, Tong-Yu Li, Chun-Ying Li, Li Wei, Xiao-He Hou
Winter cities have severe shortages of water resources. The effective classification and recycling of urban water resources that are available here are therefore significant for the sustainable utilization of water in winter cities, and snow is a potential water resource. In this research, the water quality of the snow and the pollutant composition in the vehicle roads of a typical residential community of Harbin are analyzed. It is concluded that there is a large amount of suspended substances, including chemical oxygen demand (COD), salt, ammonia, and oil in this snow...
September 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28919476/current-status-of-the-pilot-scale-anaerobic-membrane-bioreactor-treatments-of-domestic-wastewaters-a-critical-review
#19
REVIEW
Chungheon Shin, Jaeho Bae
This review presented the performances of the pilot-scale anaerobic membrane bioreactors (AnMBRs) treating domestic wastewater. High COD removal efficiencies and low biosolids productions were achieved at HRTs comparable to conventional aerobic processes under ambient temperatures. The energy demands for fouling control in the pilot-scale AnMBRs ranged from 0.04 to 1.35kWh/m(3), which is lower than those of lab-scale AnMBRs and aerobic MBRs. The energy demands for fouling control were in the order of gas sparging>particle sparging>rotating membrane AnMBR...
September 5, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28919474/highly-efficient-one-step-advanced-treatment-of-biologically-pretreated-coking-wastewater-by-an-integration-of-coagulation-and-adsorption-process
#20
Jie Li, Xiao Yuan, Huangpu Zhao, Fengting Li, Zhongfang Lei, Zhenya Zhang
A novel integrated process of coagulation and adsorption was proposed for the advanced treatment of biologically pretreated coking wastewater. Results of laboratory, pilot, and industrial-scale experiments indicated that this one-step novel process can remove biorefractory pollutants, achieving the maximum chemical oxygen demand (COD) and cyanide removals of around 85.3% and 99.4%, respectively. Its effluent could meet the corresponding discharge standards without any further treatment, i.e., COD <30mg/L, cyanide <0...
September 6, 2017: Bioresource Technology
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