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https://www.readbyqxmd.com/read/28340387/an-exploration-of-the-effect-and-interaction-mechanism-of-bisphenol-a-on-waste-sludge-hydrolysis-with-multi-spectra-isothermal-titration-microcalorimetry-and-molecule-docking
#1
Guangying Hou, Rui Zhang, Xiaoyan Hao, Chunguang Liu
An increasing amount of bisphenol A (BPA) is being produced and used, then discharged into sewage treatment plants and accumulated in sludge or soil, when the sludge is used as fertilizer. Accumulation of BPA in sludge or soil causes poisoning to the enzyme, which affects the biological treatment of sludge and the circulation and conversion of materials in soil. In this research, effect of BPA on sludge hydrolysis is studied from the respect of concentration and components of soluble organic matter in sludge, using three-dimensional fluorescence spectra...
March 10, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28340326/effects-of-coupling-a-uf-membrane-with-a-mesh-screen-and-elevating-temperature-in-the-methanogenic-digester-of-a-two-phased-anaerobic-system
#2
Min Ho Kim, Chul-Hwi Park, Gee-Bong Han
This study was conducted to investigate coupling of UF with a mesh screen under thermophilic temperatures and compare the effectiveness of membrane filtration and temperature change in the methanogenic digester. A two-phased anaerobic digester coupled with an ultrafiltration (UF) membrane system was used for anaerobic sludge digestion. The overall average chemical oxygen demand (COD) removal efficiency achieved in the two-phased anaerobic digester coupled with the UF membrane system was 97.9 ± 0.8%. In the methanogenic digester, 10...
March 24, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28337188/influence-of-herbicide-triasulfuron-on-soil-microbial-community-in-an-unamended-soil-and-a-soil-amended-with-organic-residues
#3
Eva Pose-Juan, José M Igual, María J Sánchez-Martín, M S Rodríguez-Cruz
The effect of organic amendments and pesticides on a soil microbial community has garnered considerable interest due to the involvement of microorganisms in numerous soil conservation and maintenance reactions. The aim of this work was to assess the influence on a soil microbial community of the simultaneous application of the herbicide triasulfuron at three doses (2, 10, and 50 mg kg(-1)), with an organic amendment [sewage sludge (SS) or green compost (GC)]. Dissipation kinetics, soil microbial biomass, dehydrogenase activity (DHA) and respiration, and the profile of phospholipid fatty acids (PLFAs) extracted from the soil, were determined in unamended (S) soil and amended (S+SS and S+GC) ones...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28336595/genome-sequence-of-creatinine-fermenting-tissierella-creatinophila-strain-kre-4-t-dsm-6911
#4
Heiko Nacke, Rolf Daniel, Anja Poehlein
Tissierella creatinophila strain KRE 4(T) (DSM 6911) is a strictly anaerobic, creatinine-fermenting, and creatine-fermenting organism, which has been isolated from sewage sludge. The draft genome consists of one circular chromosome (2.5 Mb) and harbors 2,533 predicted protein-encoding genes.
March 23, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28336334/agricultural-utilization-of-biosolids-a-review-on-potential-effects-on-soil-and-plant-grown
#5
REVIEW
Bhavisha Sharma, Abhijit Sarkar, Pooja Singh, Rajeev Pratap Singh
Environmental and economic implications linked with the proper ecofriendly disposal of modern day wastes, has made it essential to come up with alternative waste management practices that reduce the environmental pressures resulting from unwise disposal of such wastes. Urban wastes like biosolids are loaded with essential plant nutrients. In this view, agricultural use of biosolids would enable recycling of these nutrients and could be a sustainable approach towards management of this hugely generated waste...
March 20, 2017: Waste Management
https://www.readbyqxmd.com/read/28335306/ionic-adsorption-and-desorption-of-cnt-nanoropes
#6
Jun-Jun Shang, Qing-Sheng Yang, Xiao-Hui Yan, Xiao-Qiao He, Kim-Meow Liew
A nanorope is comprised of several carbon nanotubes (CNTs) with different chiralities. A molecular dynamic model is built to investigate the ionic adsorption and desorption of the CNT nanoropes. The charge distribution on the nanorope is obtained by using a modified gradient method based on classical electrostatic theory. The electrostatic interactions among charged carbon atoms are calculated by using the Coulomb law. It was found here that the charged nanorope can adsorb heavy metal ions, and the adsorption and desorption can be realized by controlling the strength of applied electric field...
September 28, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334677/centralized-management-of-sewage-sludge-and-agro-industrial-waste-through-co-composting
#7
M C Gutiérrez, A Serrano, J A Siles, A F Chica, M A Martín
In this research study, the co-composting process of a waste mixture containing strawberry extrudate, fish waste, sewage sludge and bulking agent (SEFW, 190:1:22:90 ratio) was carried out in a dynamic-solid respirometer at pilot scale. The aerobic biodegradability of the mixture was previously ensured in a static-liquid respirometer. The advantages and drawbacks of the SEFW co-composting process were subsequently identified through the determination of respirometric activity and the physical-chemical characterization of the waste, as well as the monitoring of odor emissions...
March 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28334656/lipid-profiling-in-sewage-sludge
#8
Fenfen Zhu, Xuemin Wu, Luyao Zhao, Xiaohui Liu, Juanjuan Qi, Xueying Wang, Jiawei Wang
High value-added reutilization of sewage sludge from wastewater treatment plants (WWTPs) is essential in sustainable development in WWTPs. However, despite the advantage of high value reutilization, this process must be based on a detailed study of organics in sludge. We used the methods employed in life sciences to determine the profile of lipids (cellular lipids, free fatty acids (FFAs), and wax/gum) in five sludge samples obtained from three typical WWTPs in Beijing; these samples include one sludge sample from a primary sedimentation tank, two activated sludge samples from two Anaerobic-Anoxic-Oxic (A2/O) tanks, and two activated sludge samples from two membrane bioreactor tanks...
March 20, 2017: Water Research
https://www.readbyqxmd.com/read/28334626/label-free-electrochemiluminescent-biosensor-for-rapid-and-sensitive-detection-of-pseudomonas-aeruginosa-using-phage-as-highly-specific-recognition-agent
#9
Huan Yue, Yong He, Enci Fan, Lin Wang, Shuguang Lu, Zhifeng Fu
A virulent phage named as PaP1 was isolated from hospital sewage based on a lambda phage isolation protocol. This phage showed a strong and highly specific binding ability to Pseudomonas aeruginosa (P. aeruginosa). Using this isolated phage as a recognition agent, a novel electrochemiluminescent (ECL) biosensor was developed for label-free detection of P. aeruginosa. The biosensor was fabricated through depositing phage-conjugated carboxyl graphene onto the surface of a glass carbon electrode. After specific binding of the host bacteria through the adsorption of P...
March 18, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28334551/using-micro-patterned-surfaces-to-inhibit-settlement-and-biofilm-formation-by-bacillus-subtilis
#10
Siyuan Chang, Xiaodong Chen, Shuo Jiang, Jinchun Chen, Lin Shi
Biofilm is a biological complex caused by bacteria settlement to the substrates, their subsequent reproduction and secretion. This phenomena reduce heat transfer efficiency and cause significant losses in treated sewage heat recovering systems. This paper describes a physical approach to inhibit the bacteria settlement and biofilm formation by Bacillus subtilis, which is the dominant genera in the treated sewage. Here, the micro-patterned surfaces with different characteristics (stripe and cube) and dimensions (1 μm to 100 μm) were fabricated as surfaces of interest...
March 23, 2017: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28334141/distribution-of-antimicrobial-resistance-determinants-virulence-associated-factors-and-crispr-loci-in-isolates-of-enterococcus-faecalis-from-various-settings-and-genetic-lineages
#11
Iwona Gawryszewska, Katarzyna Malinowska, Alicja Kuch, Dorota Chrobak-Chmiel, Lucja Laniewska-Trokenheim, Waleria Hryniewicz, Ewa Sadowy
Enterococcus faecalis represents an important factor of hospital-associated infections (HAIs). The knowledge on its evolution from a commensal to an opportunistic pathogen is still limited, thus we performed a study to characterize distribution of factors that may contribute to this adaptation. Using a collection obtained from various settings (hospitalized patients, community carriers, animals, fresh food, sewage, water) we investigated differences in antimicrobial susceptibility, distribution of antimicrobial resistance genes, virulence-associated determinants and phenotypes, and CRISPR loci in the context of the clonal relatedness of isolates...
March 1, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28333063/occurrence-and-elimination-of-antibiotics-in-three-sewage-treatment-plants-with-different-treatment-technologies-in-urumqi-and-shihezi-xinjiang
#12
Jiang Liu, Jianjiang Lu, Yanbin Tong, Chao Li
Fourteen antibiotics, including five quinolones (QNs), five sulfonamides (SAs), and four tetracyclines (TCs), were selected to investigate their occurrence and elimination in three sewage treatment plants (STPs) by employing different treatment technologies in Urumqi (two STPs) and Shihezi (one STP), China. The STP in Shihezi was chosen as representative to investigate the distribution of antibiotics in a sludge-sewage system. Results showed that the concentrations of most detected antibiotics ranged from tens to hundreds of nanograms per liter in influent samples and under 100 ng L(-1) in effluent samples...
March 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28331217/geographic-distribution-of-cadmium-and-its-interaction-with-the-microbial-community-in-the-longjiang-river-risk-evaluation-after-a-shocking-pollution-accident
#13
MingJiang Zhang, FuKe Huang, GuangYuan Wang, XingYu Liu, JianKang Wen, XiaoSheng Zhang, YaoSi Huang, Yu Xia
A shocking Longjiang River cadmium pollution accident occurred in 2012, the effects of which on microbial communities remain unclear. Alkaline precipitation technology was applied for remediation, but concerns rose about the stability of this technology. To understand the geographic distribution of cadmium and its correlation with microbes, in this study, 39 water samples and 39 sludge samples from this river and 2 soil samples from the nearby farmland were collected for chemical and microbial analyses. The Cd concentrations of all water samples were lower than 0...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28329712/toxicity-of-effluents-from-gasoline-stations-oil-water-separators-to-early-life-stages-of-zebrafish-danio-rerio
#14
Romulo Nepomuceno Alves, Célio Freire Mariz, Driele Ventura de Paulo, Paulo S M Carvalho
Used petroleum hydrocarbons and gasoline stations runoff are significant sources of polycyclic aromatic hydrocarbons (PAHs) to aquatic ecosystems. Samples of the final effluent of oil-water-separators were collected at gasoline stations in the metropolitan region of Recife, Brazil, before release to sewage or rainwater systems. Effluent soluble fractions (ESF) were prepared and bioassays were performed according to the Fish Embryo Toxicity Test. The test involved exposing zebrafish Danio rerio embryos to dilutions of the ESFs for 96 h, with daily examination of lethality and sublethal morphological effects integrated through the General Morphology Score (GMS), based on the achievement of developmental hallmarks...
March 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28327292/edta-application-on-agricultural-soils-affects-microelement-uptake-of-plants
#15
Elke Bloem, Silvia Haneklaus, Robert Haensch, Ewald Schnug
Chelates such as ethylenediaminetetraacetic acid (EDTA) enter soils via various sources but their effect on agricultural crops is mostly unknown. Sources of EDTA include industry, households, sewage water and agricultural practices. In a field experiment EDTA was applied in its free form at different rates (0, 150, 550, 1050kgha(-1)) to study its translocation in the soil profile and to evaluate its effect on yield and mineral composition of the cultivated crop, both in the year of application (oilseed rape) and in the following year (winter wheat)...
January 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28325706/biochemical-methane-potential-from-sewage-sludge-effect-of-an-aerobic-pretreatment-and-fly-ash-addition-as-source-of-trace-elements
#16
César Huiliñir, Paula Pinto-Villegas, Alejandra Castillo, Silvio Montalvo, Lorna Guerrero
The effect of aerobic pretreatment and fly ash addition on the production of methane from mixed sludge is studied. Three assays with pretreated and not pretreated mixed sludge in the presence of fly ash (concentrations of 0, 10, 25, 50, 250 and 500mg/L) were run at mesophilic condition. It was found that the combined use of aerobic pretreatment and fly ash addition increases methane production up to 70% when the fly ash concentrations were lower than 50mg/L, while concentrations higher than 250mg/L cause up to 11% decrease of methane production...
March 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28325703/investigation-of-sewage-sludge-treatment-using-air-plasma-assisted-gasification
#17
Nerijus Striūgas, Vitas Valinčius, Nerijus Pedišius, Robertas Poškas, Kęstutis Zakarauskas
This study presents an experimental investigation of downdraft gasification process coupled with a secondary thermal plasma reactor in order to perform experimental investigations of sewage sludge gasification, and compare process parameters running the system with and without the secondary thermal plasma reactor. The experimental investigation were performed with non-pelletized mixture of dried sewage sludge and wood pellets. To estimate the process performance, the composition of the producer gas, tars, particle matter, producer gas and char yield were measured at the exit of the gasification and plasma reactor...
March 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28324839/contributions-of-trace-elements-to-the-sea-by-small-uncontaminated-rivers-effects-of-a-water-reservoir-and-a-wastewater-treatment-plant
#18
Miguel Ángel Álvarez-Vázquez, Ricardo Prego, Miguel Caetano, Elena De Uña-Álvarez, Maryló Doval, Susana Calvo, Carlos Vale
Trace element contributions from small rivers to estuaries is an issue barely addressed in the literature. In this work, freshwater flowing into the Ria of Cedeira (NW Iberian Peninsula) was studied during a hydrological year through the input from three rivers, one considered uncontaminated (the Das-Mestas River), a second affected by urban treated wastewater discharges (the Condomiñas River), and the third containing a water reservoir for urban supply (the Forcadas River). With the objective of assessing the possible influence of human pressure, the annual yields for selected trace elements (Al, Fe, As, Cd, Co, Cr, Cu, Mn, Mo, Ni and Pb) were estimated and compared by normalizing by basin surface...
March 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/28319860/effects-of-silver-nanoparticles-on-survival-biomass-change-and-avoidance-behaviour-of-the-endogeic-earthworm-allolobophora-chlorotica
#19
C Brami, A R Glover, K R Butt, C N Lowe
Increasing commercial application of silver nanoparticles (Ag NP) and subsequent presence in wastewater and sewage sludge has raised concerns regarding their effects in the aquatic and terrestrial environment. Several studies have employed standardised acute and chronic earthworm-based tests to establish the toxicological effects of Ag NP within soil. These studies have relied heavily on the use of epigiec earthworm species which may have limited ecological relevance in mineral soil. This study assessed the influence of Ag NP (uncoated 80nm powder) and AgNO3 on survival, change in biomass and avoidance behaviour in a soil dwelling (endogiec) species, Allolobophora chlorotica...
March 15, 2017: Ecotoxicology and Environmental Safety
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
#20
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
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