journal
MENU ▼
Read by QxMD icon Read
search

Water Science and Technology: a Journal of the International Association on Water Pollution Research

journal
https://www.readbyqxmd.com/read/28402316/effect-of-anaerobic-digestion-and-liming-on-plant-availability-of-phosphorus-in-iron-and-aluminium-precipitated-sewage-sludge-from-primary-wastewater-treatment-plants
#1
Emilio Alvarenga, Anne Falk Øgaard, Lasse Vråle
More efficient plant utilisation of the phosphorus (P) in sewage sludge is required because rock phosphate is a limited resource. To meet environmental legislation thresholds for P removal from wastewater (WW), primary treatment with iron (Fe) or aluminium (Al) coagulants is effective. There is also a growing trend for WW treatment plants (WWTPs) to be coupled to a biogas process, in order to co-generate energy. The sludge produced, when stabilised, is used as a soil amendment in many countries. This study examined the effects of anaerobic digestion (AD), with or without liming as a post-treatment, on P release from Fe- and Al-precipitated sludges originating from primary WWTPs...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402315/simultaneous-use-of-iron-and-copper-anodes-in-photoelectro-fenton-process-concurrent-removals-of-dye-and-cadmium
#2
Ali Akbar Babaei, Farshid Ghanbari, Reza Jalilzadeh Yengejeh
Photoelectro-Fenton (PEF) was carried out for concurrent removals of inorganic and organic pollutants with simultaneous applications of two different anodes (iron and copper). Cadmium and Direct Orange 26 (DO26) were selected as samples of the contaminants of textile wastewater and influential parameters (pH, current density, H2O2 dosage and electrolysis time) of PEF were evaluated on Cd and DO26 removals. Both mechanisms of coagulation and oxidation affected the removal of both pollutants. Optimal conditions were achieved with pH = 4...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402314/semicentralized-greywater-and-blackwater-treatment-for-fast-growing-cities-how-uncertain-influent-characteristics-might-affect-the-treatment-processes
#3
J Tolksdorf, P Cornel
The SEMIZENTRAL infrastructure approach has been developed for fast growing cities, to meet their challenges regarding water supply as well as biowaste and wastewater (WW) treatment. The world's first full-scale SEMIZENTRAL Resource Recovery reference plant has been implemented in Qingdao (PR China). Greywater (GW) and blackwater (BW) are collected and treated separately. Measurement of influent concentrations revealed significant differences, compared with the design values. Values from the literature for GW and BW characteristics vary more markedly than for municipal WW; recommended design values are still lacking...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402313/effects-of-carbon-sources-cod-no2-n-ratios-and-temperature-on-the-nitrogen-removal-performance-of-the-simultaneous-partial-nitrification-anammox-and-denitrification-snad-biofilm
#4
Zhaoming Zheng, Yun Li, Jun Li, Yanzhuo Zhang, Wei Bian, Jia Wei, Baihang Zhao, Jingyue Yang
The aim of the present work was to evaluate the effects of carbon sources and chemical oxygen demand (COD)/NO2(-)-N ratios on the anammox-denitrification coupling process of the simultaneous partial nitrification, anammox and denitrification (SNAD) biofilm. Also, the anammox activities of the SNAD biofilm were investigated under different temperature. Kaldnes rings taken from the SNAD biofilm reactor were operated in batch tests to determine the nitrogen removal rates. As a result, with the carbon source of sodium acetate, the appropriate COD/NO2(-)-N ratios for the anammox-denitrification coupling process were 1 and 2...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402312/release-of-hydrogen-sulfide-in-a-sewer-system-under-intermittent-flow-conditions-the-eiceira-case-study-in-portugal
#5
Natércia Matias, Rita Ventura Matos, Filipa Ferreira, Jes Vollertsen, José Saldanha Matos
The presence and fate of hydrogen sulfide in wastewater systems were studied in two stretches of an intercepting sewer system located in a coastal village, in Portugal. A range of hydraulic parameters were obtained and liquid and gas phase measurements were carried out, both continuously and through intensive sampling campaigns. Upstream, where flow rates were relatively low, dissolved sulfide concentrations around 12 mg S L(-1) and hydrogen sulfide gas concentrations above 250 ppm were observed, along with limited corrosion damage...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402311/polishing-of-municipal-secondary-effluent-using-native-microalgae-consortia
#6
Julio César Beltrán-Rocha, Icela Dagmar Barceló-Quintal, Magdalena García-Martínez, Luis Osornio-Berthet, Nidia Saavedra-Villarreal, Juan Villarreal-Chiu, Ulrico Javier López-Chuken
This work evaluates the use of native microalgae consortia for a dual role: polishing treatment of municipal wastewater effluents and microalgae biomass feedstock potential for biodiesel or biofertilizer production. An initial screening was undertaken to test N and P removal from secondary effluents and biomass production by 12 consortia. A subsequent treatment was performed by selected consortia (01 and 12) under three operational conditions: stirring (S), S + 12 h of daily aeration (S + A) and S + A enriched with CO2 (S + AC)...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402310/treatment-of-urea-manufacturing-facility-effluent-by-hopea-odorata-and-khaya-ivorensis
#7
Sara Yavari, Amirhossein Malakahmad, Nasiman B Sapari, Saba Yavari
Phytoremediation is an environmentally friendly and sustainable alternative for treatment of nitrogen-enriched wastewaters. In this study, Ta-khian (Hopea odorata) and Lagos mahogany (Khaya ivorensis), two tropical timber plants, were investigated for their performances in treatment of urea manufacturing factory effluent with high nitrogen (N) content. Plant seedlings received four concentrations of N (190, 240, 290 and 340 mg/L N) in laboratory-scale constructed wetlands every 4 days for a duration of 8 weeks...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402309/cadmium-ion-adsorption-by-amine-modified-activated-carbon
#8
Acong Chen, Xin Xin, Jie Xu, Yu Bian, Zhaoyong Bian
Cadmium (Cd) is one of the most toxic metals found in water and sediments. In the effort to develop an effective adsorbent for aqueous Cd removal, activated carbon (AC) was modified with an amino-terminated organosilicon (3-aminopropyltrimethoxysilane, APS). Response surface methodology was used to optimize selected operational parameters of adsorption of aqueous Cd by considering a central composite design with three input variables, temperature of the mixture solution, the contact time and feed ratio (APS/AC), on the surface modification...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402308/phyto-dewatering-of-sewage-sludge-using-panicum-repens-l
#9
A S El-Gendy, H I El-Kassas, T M A Razek, H Abdel-Latif
Experiments in the field environment have been conducted to study the growth of Panicum repens L., an aquatic plant, in the sewage sludge matrix. The experiments were also carried out to investigate the ability of this plant to dewater sewage sludge to increase the capacity of conventional drying beds. In addition, the ability of Panicum repens L. to reduce the sludge contents of certain elements (copper (Cu), Iron (Fe), Sodium (Na), lead (Pb), and Zinc (Zn)) was also investigated. All experiments were carried out in batch reactors...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402307/potential-of-resource-recovery-in-uasb-trickling-filter-systems-treating-domestic-sewage-in-developing-countries
#10
T Bressani-Ribeiro, E M F Brandt, K G Gutierrez, C A Díaz, G B Garcia, C A L Chernicharo
This paper aims to present perspectives for energy (thermal and electric) and nutrient (N and S) recovery in domestic sewage treatment systems comprised of upflow anaerobic sludge blanket (UASB) reactors followed by sponge-bed trickling filters (SBTF) in developing countries. The resource recovery potential was characterized, taking into account 114 countries and a corresponding population of 968.9 million inhabitants living in the tropical world, which were grouped into three desired ranges in terms of cities' size...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402306/adsorptive-removal-of-rhodamine-b-from-aqueous-solution-by-nanoporous-polydivinylbenzene
#11
Hongyu Jia, Ningning Liu
Nanoporous polydivinylbenzene (PDVB) material has been successfully prepared via the copolymerization of divinylbenzene monomers. The nanoporous PDVB was characterized through N2 adsorption/desorption isotherms, Fourier transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The nanoporous PDVB as an adsorbent was applied for the removal of Rhodamine B (RhB). The adsorption behavior of PDVB for the removal of RhB showed that the isotherm data followed the Langmuir isotherm model and the kinetic adsorption obeyed the pseudo-second-order model...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402305/the-binding-of-metal-ions-to-molecularly-imprinted-polymers
#12
Rukshan Perera, Syed Ashraf, Anja Mueller
Imprinting polymerization is a flexible method to make resins specific for different compounds. Imprinting polymerization involves the polymerization of the resin in the presence of a template, here cadmium ions or arsenate. The template is then removed by washing, leaving specific binding sites in the resin. In water treatment, the removal of toxic metal ions is difficult due to the limited affinity of these ions to ion exchange resins. Imprinting polymerization of ion-exchange resins is used to develop resins with high capacity and some selectivity for cadmium ions or arsenate for water treatment that still function as general ion-exchange resins...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402304/adsorption-of-methyl-orange-from-aqueous-solution-using-chitosan-diatomite-composite
#13
Peng Zhao, Runhu Zhang, Jianglin Wang
A novel chitosan/diatomite composite was prepared by a simple mixture in the mass ratio to remove methyl orange (MO) from aqueous media in this study. The composite adsorbent was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy analysis. The parameters to influence the adsorption of MO were studied under such conditions as kinetics, adsorption isotherm, pH effect, and thermodynamics. The results revealed that adsorption of MO was initially rapid and the equilibrium time was reached after 40 min...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402303/ferrrate-vi-and-freeze-thaw-treatment-for-oxidation-of-hormones-and-inactivation-of-fecal-coliforms-in-sludge
#14
James Diak, Banu Örmeci
This study examined the individual and combined effects of potassium ferrate(VI) additions and freeze-thaw conditioning for the treatment and dewatering of wastewater sludge in cold climates, with particular focus on the inactivation of fecal coliforms and oxidation of estrogens, androgens, and progestogens. The first phase of the study evaluated the effects of potassium ferrate(VI) pre-treatment followed by freeze-thaw at -20 °C using a low (0.5 g/L) and high (5.0 g/L) dose of potassium ferrate(VI). The results showed that pre-treatment of anaerobically digested sludge with 5 g/L of potassium ferrate(VI) reduced the concentration of fecal coliforms in the sludge cake to below 100 MPN/g DS...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402302/odorous-volatile-organic-compound-voc-emissions-from-ageing-anaerobically-stabilised-biosolids
#15
R M Fisher, R J Barczak, J P Alvarez Gaitan, N Le-Minh, R M Stuetz
Opportunities for the beneficial re-use of biosolids are limited by nuisance odour emissions. Volatile organic compounds (VOCs) from anaerobically stabilised biosolids were measured to identify compounds that could contribute to the overall odour character of nuisance emissions. Flux hood sampling and chemical analysis were used to identify VOCs emitted from biosolids as they were stored in ambient conditions. Compounds emitted varied as the biosolid cakes were stored for a period of 50 days. VOCs detected in the biosolids are likely to occur from catchment sources as well as abiotic and biotic generation in the wastewater processing and the biosolids as they are stored...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402301/comparison-of-the-methane-production-potential-and-biodegradability-of-kitchen-waste-from-different-sources-under-mesophilic-and-thermophilic-conditions
#16
Ziyi Yang, Wen Wang, Shuyu Zhang, Zonghu Ma, Naveed Anwar, Guangqing Liu, Ruihong Zhang
The methane production potential of kitchen waste (KW) obtained from different sources was compared through mesophilic and thermophilic anaerobic digestion. The methane yields (MYs) obtained with the same KW sample under different temperatures were similar, whereas the MYs obtained with different samples differed significantly. The highest MY obtained in S7 was 54%-60% higher than the lowest MY in S3. The modified Gompertz model was utilized to simulate the methane production process. The maximum production rate of methane under thermophilic conditions was 2%-86% higher than that under mesophilic conditions...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402300/studies-on-the-adsorption-of-amoxicillin-on-multi-wall-carbon-nanotubes
#17
Davoud Balarak, FerdosKord Mostafapour, Edris Bazrafshan, Tawfik A Saleh
This study examined the feasibility of removing amoxicillin (AMO) from aqueous solutions using multi-wall carbon nanotubes. The equilibrium adsorption data were analyzed using four widely applied isotherms: Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich. The results showed that the Langmuir isotherm model fits well the obtained experimental data. The adsorption process followed the pseudo-second-order model. The activation energy was found to be 19 kJ/mol. The Standard free energy changes, ΔG(0), values were negative; the standard enthalpy change (ΔH(0)), and standard entropy change (ΔS(0)) values of the process were 4 kJ/mol and 36 J/mol...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402299/influences-of-rainfall-variables-and-antecedent-discharge-on-urban-effluent-concentrations-and-loads-in-wet-weather
#18
Zuxin Xu, Lijun Xiong, Huaizheng Li, Zhengliang Liao, Hailong Yin, Jun Wu, Jin Xu, Hao Chen
For storm drainages inappropriately connected with sewage, wet weather discharge is a major factor that adversely affects receiving waters. A study of the wet weather influences of rainfall-discharge variables on storm drainages connected with sewage was conducted in the downtown Shanghai area (374 ha). Two indicators, event mean concentration (EMC) and event pollutant load per unit area (EPL), were used to describe the pollution discharge during 20 rain events. The study showed that the total rainfall and discharge volume were important factors that affect the EMCs and EPLs of the chemical oxygen demand, total phosphorus, and especially those of NH4(+)-N...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402298/bioremediation-of-methylene-blue-dye-using-bacillus-subtilis-mtcc-441
#19
Ganta Upendar, Susmita Dutta, Pinaki Bhattacharya, Abhishek Dutta
Methylene blue (MB) commonly found in the textile industry effluent has been chosen as a model dye to investigate bioremediation using Bacillus subtilis MTCC 441. Both free cells and calcium alginate immobilized cells have been used to remove MB from the effluent. The operating variables of initial concentration of dye (20-60 mg/L), inoculum size (4-8%) and temperature (25-35 °C) have been varied judiciously during the kinetic study in a batch contactor. A maximum removal of 91.68% is obtained when 20 mg/L MB solution was inoculated with 8% inoculum and cultured for 6 h at 30 °C...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28402297/functionalized-carbon-nanotubes-based-filters-for-chromium-removal-from-aqueous-solutions
#20
Emad M Elsehly, N G Chechenin, A V Makunin, H A Motaweh, E G Leksina
This investigation examines the filtration efficiency of chromium from aqueous solution using two types of commercial multiwalled carbon nanotubes (MWCNTs) (Taunit-M (TM) and Taunit-MD (TMD)). These MWCNTs were modified using two complementary treatments, purification (using a mixture of hydrochloric acid and hydrogen peroxide) and functionalization (using nitric acid). The effect of these treatments on the morphology of MWCNT Taunit filters was characterized by scanning electron microscopy and energy dispersive X-ray spectroscopy to estimate the outer diameter distribution and element content deposited on filters...
April 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
journal
journal
33676
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"