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https://www.readbyqxmd.com/read/29156440/pharmaceutical-and-personal-care-products-induced-stress-symptoms-and-detoxification-mechanisms-in-cucumber-plants
#1
Chengliang Sun, Stacia Dudley, John Trumble, Jay Gan
Contamination of agricultural soils by pharmaceutical and personal care products (PPCPs) resulting from the application of treated wastewater, biosolids and animal wastes constitutes a potential environmental risk in many countries. To date a handful of studies have considered the phytotoxicity of individual PPCPs in crop plants, however, little is known about the effect of PPCPs as mixtures at environmentally relevant levels. This study investigated the uptake and transport, physiological responses and detoxification of a mixture of 17 PPCPs in cucumber seedlings...
November 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29156370/a-novel-aerated-surface-flow-constructed-wetland-using-exhaust-gas-from-biological-wastewater-treatment-performance-and-mechanisms
#2
Xinwen Zhang, Zhen Hu, Jian Zhang, Jinlin Fan, Huu Hao Ngo, Wenshan Guo, Chujun Zeng, Yiwen Wu, Siyuan Wang
In this study, a novel aerated surface flow constructed wetland (SFCW) using exhaust gas from biological wastewater treatment was investigated. Compared with un-aerated SFCW, the introduction of exhaust gas into SFCW significantly improved NH4(+)-N, TN and COD removal efficiencies by 68.30 ± 2.06%, 24.92 ± 1.13% and 73.92 ± 2.36%, respectively. The pollutants removal mechanism was related to the microbial abundance and the highest microbial abundance was observed in the SFCW with exhaust gas because of the introduction of exhaust gas from sequencing batch reactor (SBR), and thereby optimizing nitrogen transformation processes...
September 18, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29156332/effective-flocculation-of-microcystis-aeruginosa-with-simultaneous-nutrient-precipitation-from-hydrolyzed-human-urine
#3
Yan-Shan Wang, Zhong-Hua Tong, Long-Fei Wang, Guo-Ping Sheng, Han-Qing Yu
Mechanical harvest of massive harmful algal blooms is an effective measure for bloom mitigation. Yet subsequent processing of the resulting water from algae water separation after the harvesting becomes a new problem since individual algal cells or small algal aggregates are still present in the water. Here, we proposed a novel approach for effectively flocculating the cyanobacteria Microcystis aeruginosa with a removal efficiency of 97% in 6 h using hydrolyzed urine. Nitrogen and phosphorus were simultaneously reclaimed through struvite formation...
November 11, 2017: Chemosphere
https://www.readbyqxmd.com/read/29156284/temporal-characterization-and-statistical-analysis-of-flowback-and-produced-waters-and-their-potential-for-reuse
#4
Karl Oetjen, Kevin E Chan, Kristoffer Gulmark, Jan H Christensen, Jens Blotevogel, Thomas Borch, John R Spear, Tzahi Y Cath, Christopher P Higgins
Hydraulic fracturing (HF) has allowed for the utilization of previously unattainable shale oil and gas (O&G) resources. After HF is complete, the waters used to increase the facies' permeability return uphole as wastewaters. When these waters return to the surface, they are characterized by complex organic and inorganic chemistry, and can pose a health risk if not handled correctly. Therefore, these waters must be treated or disposed of properly. However, the variability of these waters' chemical composition over time is poorly understood and likely limits the applicability of their reuse...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156276/formation-and-degradation-of-n-oxide-venlafaxine-during-ozonation-and-biological-post-treatment
#5
Ines Zucker, Hadas Mamane, Alon Riani, Igal Gozlan, Dror Avisar
While ozonation is considered an efficient treatment to eliminate trace organic compounds (TrOCs) from secondary wastewater effluents, the presence and persistence of transformation products (TPs) resulting from ozonation of TrOCs is a major concern that should be assessed prior to effluent discharge to the environment. Venlafaxine (VLX), an environmentally relevant tertiary amine-containing TrOC, was chosen as the model for this study. TP analysis confirmed that the lone electron pair of the non-protonated amine are the predominant site of oxidant attack, and therefore strongly affected by pH value and VLX speciation...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156271/fresh-and-composted-industrial-sludge-restore-soil-functions-in-surface-soil-of-degraded-agricultural-land
#6
Muhammad Saleem Arif, Muhammad Riaz, Sher Muhammad Shahzad, Tahira Yasmeen, Muhammad Ashraf, Muhammad Siddique, Muhammad Salman Mubarik, Luca Bragazza, Alexandre Buttler
A field study was conducted to test the potential of 5-year consecutive application of fresh industrial sludge (FIS) and composted industrial sludge (CIS) to restore soil functions at surface (0-15cm) and subsurface (15-30cm) of the degraded agricultural land. Sludge amendments increased soil fertility parameters including total organic carbon (TOC), soil available nitrogen (SAN), soil available phosphorus (SAP) and soil available potassium (SAK) at 0-15cm depth. Soil enzyme activities i.e. dehydrogenase (DHA), β-glucosidase (BGA) and alkaline phosphatase (ALp) were significantly enhanced by FIS and CIS amendments in surface soil...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156265/occurrence-and-fate-of-most-prescribed-antibiotics-in-different-water-environments-of-tehran-iran
#7
Roya Mirzaei, Masud Yunesian, Simin Nasseri, Mitra Gholami, Esfandiyar Jalilzadeh, Shahram Shoeibi, Alireza Mesdaghinia
The presence of most prescribed antibiotic compounds from four therapeutic classes (β-lactam, cephalosporins, macrolides, fluoroquinolones) were studied at two full-scale WWTPs, two rivers, thirteen groundwater resources, and five water treatment plants in Tehran. Analytical methodology was based on high performance liquid chromatography/tandem mass spectrometry after solid-phase extraction. Samples were collected at 33 sample locations on three sampling periods over four months from June to August 2016. None of the target antibiotics were detected in groundwater resources and water treatment plants, while seven out of nine target antibiotics were analyzed in two studied river waters as well as the influent and effluent of wastewater treatment plants at concentrations ranging from <LOQ to 926...
November 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29154153/effects-of-temperature-and-hrt-on-performance-of-a-novel-insulated-anaerobic-filter-iaf-system-incorporated-with-the-waste-heat-input-for-building-wastewater-treatment
#8
Chalearn Bouted, Chavalit Ratanatamskul
Effects of temperature and hydraulic retention time (HRT) on the performance of the novel insulated anaerobic filter system (IAF) incorporated with the waste heat input in treating building wastewater were investigated. In this study, an electric heater was used to simulate the waste heat input from air conditioner to the IAF system. The wastewater was collected from an office building in Phitsanulok province, Thailand. The HRTs of IAF system were varied to 9, 18 and 27 h, whereas the water temperatures were raised from 30 °C to 35 °C, 40 °C and 45 °C by electric heating to the IAF tank with the covered insulator...
November 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29154152/a-mathematical-model-to-plan-for-long-term-effects-of-water-conservation-choices-on-dry-weather-wastewater-flows-and-concentrations
#9
Lauren M Cook, Constantine Samaras, Jeanne M VanBriesen
In many cities, sewer systems are experiencing conditions that are significantly different from those for which they were designed. Factors such as water conservation efforts, changes in population, and efforts to reduce infiltration are altering the quantity and quality of sewage. These changes may affect the ability of sewers to maintain self-cleansing velocities, which are crucial to avoiding solids settling and corrosion issues. Further, such changes may alter the timeline for expected wastewater plant expansion...
November 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29154093/highly-selective-and-efficient-adsorption-of-hg-2-by-a-recyclable-aminophosphonic-acid-functionalized-polyacrylonitrile-fiber
#10
Gang Xu, Lu Wang, Yujia Xie, Minli Tao, Wenqin Zhang
Mercury ions, even an ultra-trace amount in water, present a serious environmental concern. Hence, searching for cost-effective and high-performance Hg(2+) adsorbents has acquired increasingly attention but still remained challenging. In this work, aminophosphonic acid was immobilized onto polyacrylonitrile fiber by chemical grafting approaches. The functionalized fiber (PANAPF) possessed high adsorption selectivity and efficiency for Hg(2+) when compared with other coexisting ions viz. Pb(2+), Cd(2+), Ag(+), Zn(2+), Cu(2+), Ni(2+), Co(2+), Ca(2+) and Mg(2+)...
November 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29154008/a-combined-model-to-assess-technical-and-economic-consequences-of-changing-conditions-and-management-options-for-wastewater-utilities
#11
Mathias Giessler, Jens Tränckner
The paper presents a simplified model that quantifies economic and technical consequences of changing conditions in wastewater systems on utility level. It has been developed based on data from stakeholders and ministries, collected by a survey that determined resulting effects and adapted measures. The model comprises all substantial cost relevant assets and activities of a typical German wastewater utility. It consists of three modules: i) Sewer for describing the state development of sewer systems, ii) WWTP for process parameter consideration of waste water treatment plants (WWTP) and iii) Cost Accounting for calculation of expenses in the cost categories and resulting charges...
November 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29154006/hydrodynamic-modelling-of-the-influence-of-stormwater-and-combined-sewer-overflows-on-receiving-water-quality-benzo-a-pyrene-and-copper-risks-to-recreational-water
#12
Karin Björklund, Mia Bondelind, Anna Karlsson, Dick Karlsson, Ekaterina Sokolova
The risk from chemical substances in surface waters is often increased during wet weather, due to surface runoff, combined sewer overflows (CSOs) and erosion of contaminated land. There are strong incentives to improve the quality of surface waters affected by human activities, not only from ecotoxicity and ecosystem health perspectives, but also for drinking water and recreational purposes. The aim of this study is to investigate the influence of urban stormwater discharges and CSOs on receiving water in the context of chemical health risks and recreational water quality...
November 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29154005/levers-supporting-tariff-growth-for-water-services-evidence-from-a-contingent-valuation-analysis
#13
Andrea Guerrini, Vania Vigolo, Giulia Romano, Federico Testa
The backwardness of the water utilities sector necessitates urgent investment in infrastructure to improve water quality and efficiency in water supply networks. A policy of tariff growth represents the main source to sustain such investments. Therefore, customer engagement in the form of willingness to pay (WTP) is highly desirable by water utilities to obtain social legitimization and support. This study examines the determinants of consumers' WTP for improvement programs for three drinking water issues: quality of water sources, renewal of water mains, and building of new wastewater treatment plants...
November 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29153903/nitrification-within-composting-a-review
#14
REVIEW
Rafaela Cáceres, Krystyna Malińska, Oriol Marfà
Composting could be regarded as a process of processes because it entails a number of complex chemical and microbiological reactions and transformations. Nitrification is one of such processes that normally takes place during the curing phase. This process has been studied in detail for wastewater treatment, and it is becoming an extensively studied topic within composting. In the past, nitrate presence in compost has been clearly perceived as a maturation indicator; however, nowadays, nitrate formation is also conceived as a way of conserving nitrogen in compost...
November 15, 2017: Waste Management
https://www.readbyqxmd.com/read/29153875/the-role-of-operating-parameters-and-oxidative-damage-mechanisms-of-advanced-chemical-oxidation-processes-in-the-combat-against-antibiotic-resistant-bacteria-and-resistance-genes-present-in-urban-wastewater
#15
REVIEW
I Michael-Kordatou, P Karaolia, D Fatta-Kassinos
An upsurge in the study of antibiotic resistance in the environment has been observed in the last decade. Nowadays, it is becoming increasingly clear that urban wastewater is a key source of antibiotic resistance determinants, i.e. antibiotic-resistant bacteria and antibiotic resistance genes (ARB&ARGs). Urban wastewater reuse has arisen as an important component of water resources management in the European Union and worldwide to address prolonged water scarcity issues. Especially, biological wastewater treatment processes (i...
October 27, 2017: Water Research
https://www.readbyqxmd.com/read/29153257/pseudomonas-silesiensis-sp-nov-strain-a3-t-isolated-from-a-biological-pesticide-sewage-treatment-plant-and-analysis-of-the-complete-genome-sequence
#16
Michał A Kaminski, Ewa M Furmanczyk, Adam Sobczak, Andrzej Dziembowski, Leszek Lipinski
Microorganisms classified in to the Pseudomonas genus are a ubiquitous bacteria inhabiting variety of environmental niches and have been isolated from soil, sediment, water and different parts of higher organisms (plants and animals). Members of this genus are known for their metabolic versatility and are able to utilize different chemical compounds as a source of carbon, nitrogen or phosphorus, which makes them an interesting microorganism for bioremediation or bio-transformation. Moreover, Pseudomonas sp...
November 3, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/29151885/treatment-of-old-landfill-leachate-with-high-ammonium-content-using-aerobic-granular-sludge
#17
Yanan Ren, Fernanda Ferraz, Abbass Jafari Kang, Qiuyan Yuan
Background: Aerobic granular sludge has become an attractive alternative to the conventional activated sludge due to its high settling velocity, compact structure, and higher tolerance to toxic substances and adverse conditions. Aerobic granular sludge process has been studied intensively in the treatment of municipal and industrial wastewater. However, information on leachate treatment using aerobic granular sludge is very limited. Methods: This study investigated the treatment performance of old landfill leachate with different levels of ammonium using two aerobic sequencing batch reactors (SBR): an activated sludge SBR (ASBR) and a granular sludge SBR (GSBR)...
2017: Journal of Biological Engineering
https://www.readbyqxmd.com/read/29151339/a-novel-tool-for-estrogenic-activity-measurements-in-water-using-diffusion-gradients-in-thin-film-coupled-with-an-estrogen-bioassay
#18
Wei Guo, Kersten Van Langenhove, Michael S Denison, Willy F Baeyens, Marc Elskens, Yue Gao
A novel type of diffusive gradients in thin-film (DGT) was combined with a chemically activated luciferase gene expression bioassay (CALUX) to measure estrogens in aquatic systems. The performance of this novel method was assessed with 17β-estradiol (E2) as the model steroid hormone, XAD 18 resin gel as the binding phase in the DGT method and VM7Luc4E2 cells (formerly BG1Luc4E2) for the Estrogen Responsive Element (ERE)-CALUX bioassay. The measured effective diffusion coefficient of E2 in agarose diffusive gel was 4...
November 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29150771/occurrence-and-partition-of-perfluorinated-compounds-pfcs-in-water-and-sediment-from-the-songhua-river-china
#19
Weihua Dong, Baolin Liu, Yang Song, Hong Zhang, Juying Li, Xiaoyu Cui
This study provided the first evidence that perfluorinated compounds (PFCs) were widely detected in the Songhua River, China. Seventeen surface water and sediment samples were collected and analyzed for the determination of 14 PFCs. The total concentrations of PFCs (Σ PFCs) ranged from 0.143 to 1.41 ng L(-1) in water samples. Perfluorooctanoic acid (PFOA) was detected with the highest detection frequency (%) ranging from below LOQ to 0.678 ng L(-1). Σ PFCs were relatively low in sediments, and only four individual homologues were detected...
November 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29150635/one-pot-synthesis-of-trifunctional-chitosan-edta-%C3%AE-cyclodextrin-polymer-for-simultaneous-removal-of-metals-and-organic-micropollutants
#20
Feiping Zhao, Eveliina Repo, Dulin Yin, Li Chen, Simo Kalliola, Juntao Tang, Evgenia Iakovleva, Kam Chiu Tam, Mika Sillanpää
The global contamination of water resources with inorganic and organic micropollutants, such as metals and pharmaceuticals, poses a critical threat to the environment and human health. Herein, we report on a bio-derived chitosan-EDTA-β-cyclodextrin (CS-ED-CD) trifunctional adsorbent fabricated via a facile and green one-pot synthesis method using EDTA as a cross-linker, for the adsorption of toxic metals and organic micropollutants from wastewater. In this system, chitosan chain is considered as the backbone, and the immobilized cyclodextrin cavities capture the organic compounds via host-guest inclusion complexation, while EDTA-groups complex metals...
November 17, 2017: Scientific Reports
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