UASB reactor hydrodynamics: residence time distribution and proposed modelling tools.

abstract：:Nitrous oxide (N2O), as one of the six greenhouse gases, is mainly produced in the biological nitrogen removal process of wastewater treatment plants (WWTPs). Establishing the N2O kinetic model can provide insight into the N2O generation mechanism and regulate its production. This work uses Activated Sludge Model NO.3...

journal_title：Environmental technology

authors： Lv Y,Zhang S,Xie K,Liu G,Qiu L,Liu Y,Zhang Y

更新日期：2020-09-24 00:00:00

abstract：:During composting, the thermophilic phase resulted in high degradation of antibiotics in the composting mass; thus temperature is considered as the major factor for degradation of antibiotics. Therefore, to achieve complete removal of antibiotics, the effect of continuous thermophilic composting on the degradation of ...

journal_title：Environmental technology

authors： Selvam A,Zhao Z,Li Y,Chen Y,Leung KS,Wong JW

更新日期：2013-07-01 00:00:00

abstract：:This study was conducted to develop a two-stage process for the treatment of Hong Kong leachate. The leachate, containing 4750 mg l-1 of chemical oxygen demand (COD) and 1310 mg l-1 of ammoniacal nitrogen (NH3-N), was first treated in a UASB (upflow anaerobic sludge blanket) reactor at 37 degrees C. The process remove...

journal_title：Environmental technology

authors： Wang P,Lau IW,Fang HH

更新日期：2001-04-01 00:00:00

abstract：:As a consequence of a growing share of solar and wind power, recent research on biogas production highlighted a need for demand-orientated, flexible gas production to provide grid services and enable a decentralized stabilization of the electricity infrastructure. Two-staged anaerobic digestion is particularly suitabl...

journal_title：Environmental technology

authors： Krümpel JH,Illi L,Lemmer A

更新日期：2018-03-01 00:00:00

abstract：:Nоblе mеtаls suppоrtеd оn TiО2 (Dеgussа P25) mоdifiеd with WО3 undеr thе еffесt оf fееding оxуgеn аnd оzоnе соntаining mixturе tо thе rеасtоr undеr UV-С irrаdiаtiоn wеrе еxаminеd fоr thеir саtаlуtiс асtivitу in thеrеасtiоn оf оxаliс асid liquid phаsе оxidаtiоn. Thе sаmplеs wеrе sуnthеsizеd bу еxtrасtivе-pуrоlуtiс mеth...

journal_title：Environmental technology

authors： Gеоrgiеv V,Еliуаs А,Tуuliеv G,Bаtаkliеv T,Sеrgа V,Kаrаkаshkоvа P,Аnасhkоv M,Iliеv V

更新日期：2020-09-01 00:00:00

abstract：:The reuse of treated dyeing wastewater has become a viable option to minimizing water scarcity problems and environmental impacts in the textile industry. The potentiality of commercial flat sheet membranes of polytetrafluoroethylene (PTFE) and polypropylene (PP) in direct contact membrane distillation (DCMD) for dye ...

journal_title：Environmental technology

authors： Ramlow H,Machado RAF,Bierhalz ACK,Marangoni C

更新日期：2020-07-01 00:00:00

abstract：:Biofiltration technology has been recognized as a promising biotechnology for treating the volatile organic compounds (VOCs) present in polluted air. This study aims to investigate the performance of a biofiltration system of Streptomyces griseus sp. DSM-40759 immobilized on activated carbon (PICA S23) towards the ads...

journal_title：Environmental technology

authors： Mohamed EF,Awad G,Andriantsiferana C,El-Diwany AI

更新日期：2016-01-01 00:00:00

abstract：:Increasingly stricter ammonia and nitrogen release regulations with respect to wastewater effluents are creating a need for tertiary treatment systems. The moving bed biofilm reactor (MBBR) is being considered as an upgrade option for an increasing number of wastewater treatment facilities due to its small footprint a...

journal_title：Environmental technology

authors： Forrest D,Delatolla R,Kennedy K

更新日期：2016-01-01 00:00:00

abstract：:Landfill aeration can accelerate the biological degradation of organic waste and reduce methane production; however, it induces nitrous oxide (N2O), a potent greenhouse gas. Nitrification is one of the pathways of N2O generation as a by-product during aerobic condition. This study was initiated to demonstrate the feat...

journal_title：Environmental technology

authors： Nag M,Shimaoka T,Komiya T

更新日期：2016-11-01 00:00:00

abstract：:Surface and groundwater from Pangani River Basin (PRB) were sampled in dry and wet seasons, analysed for dissolved organic and inorganic nutrients (N, P, Si and Urea). There was spatial and seasonal nutrients' variability, with enrichment of dissolved inorganic fractions accumulated from natural and anthropogenic sour...

journal_title：Environmental technology

authors： Selemani JR,Zhang J,Muzuka ANN,Njau KN,Zhang G,Mzuza MK,Maggid A

更新日期：2018-03-01 00:00:00

abstract：:We present environmentally friendly brake pads produced with three different types of lignin, soda lignin (SL), sulphuric acid lignin (SAL) and heat-treated SAL (HL), as frictional materials to replace phenol formaldehyde resin (PFR, binder) and cashew nut shell liquid (CNSL, filler) in commercial automobile brake pad...

journal_title：Environmental technology

authors： Park J,Hwang H,Kim JY,Choi JW

更新日期：2020-01-01 00:00:00

abstract：:Treatment of wastewater containing phenol using laboratory scale waste stabilisation ponds enriched with activated sludge was studied. After enrichment, the efficiency of these ponds under high phenol loading rates (i.e. up to 408 kg phenol ha(-1) day(-1)) was studied. At phenol loading rates of 6, 52, 312, 636 and 97...

journal_title：Environmental technology

authors： Avelar FJ,Martínez-Pereda P,Thalasso F,Rodríguez-Vázquez R,Alba J,Esparza-García FJ

更新日期：2003-04-01 00:00:00

abstract：:The alternate multiple tanks (AMT) system was a new highly compact sewage treatment with cost-effective balance and automated management. Dissolved oxygen (DO) and oxidation-reduction potential (ORP) as monitoring indicators are closely linked to contaminants and controlling strategy. Thus, this paper was to investiga...

journal_title：Environmental technology

authors： Dai Z,Lu X,Jing Z

更新日期：2019-01-01 00:00:00

abstract：:We consider the use of metallic iron nanoparticles for cleaning contaminated water, focusing our study in the sorption of arsenic compounds. In particular, we discuss the results of their sorption process on the surface of zerovalent iron nanoparticles (nZVI) by performing a complete characterization of the surface mo...

journal_title：Environmental technology

authors： Baltazar SE,García A,Romero AH,Rubio MA,Arancibia-Miranda N,Altbir D

更新日期：2014-09-01 00:00:00

abstract：:A three phase (aqueous/solid/gas) mixed weak acid/base kinetic model developed by Musvoto et al. is applied to simulate the physical and chemical processes that occur on aeration of anaerobic digester liquors. Included in the model are the kinetic reactions for (i) weak acid/base dissocations (water, carbonate, ammoni...

journal_title：Environmental technology

authors： Wentzel MC,Musvoto EV,Ekama GA

更新日期：2001-11-01 00:00:00

abstract：:The forward osmotic membrane bioreactor (FOMBR) is an emerging innovative technology with broad application prospects in the field of wastewater treatment. Its application is severely limited by concentration polarization, salinity accumulation, and evident water flux decline. Gradual salinity accumulation to a maximu...

journal_title：Environmental technology

authors： Lin Y,Chen Q,Wang Y,Sua K,Hao T

更新日期：2020-02-28 00:00:00

abstract：:Polychlorinated biphenyls (PCBs) are carcinogenic to humans and can be found in fuller's earth used for the treatment of used transformer oil. This work describes an optimization of the Fenton process for the removal of contaminants from fuller's earth. The effects of pH (2.5 and 4.0), [H2O2] (1.47 and 2.07 mol L-1), ...

journal_title：Environmental technology

authors： da Silva MRA,Rodrigues EO,Espanhol-Soares M,Silva FS,Kondo MM,Gimenes R

更新日期：2019-04-01 00:00:00

abstract：:Solar total, UVA and UVB irradiances were measured separately using three kinds of wavelength band detectors in Tokyo, Japan in November 1999. Characteristics of diurnal variations were examined: Total irradiance reached a maximum value of about 600 W m(-2) at around noon. The variation pattern of UVA irradiance was o...

journal_title：Environmental technology

authors： Imaizumi A,Yoshizumi K,Fujita T

更新日期：2004-04-01 00:00:00

abstract：:Fabrication of smart composites with expected removal property and excellent recycle performance for micro-pollutants including microbes and organic contaminants without formation of second-pollutants is highly desired. In this work, Ag nanoparticles (Ag NPs) homogenously loaded on graphene aerogel (GA) as Ag NPs/GA w...

journal_title：Environmental technology

authors： Zhang Y,Yang JE,Fu ML,Yuan B,Gupta K

更新日期：2019-11-01 00:00:00

abstract：:For potential use in air treatment by biofiltration, a new material composed of vermicompost and earthworms (Eisenia fetida) was tested for the removal of a volatile organic compound (VOC), toluene. The removal rate of toluene was measured during batch experiments in presence of vermicompost only, earthworms only and ...

journal_title：Environmental technology

authors： Lusinier N,Couriol C,Cloirec PL

更新日期：2020-09-01 00:00:00

abstract：:In this study, the combined use of a biopolymer chitosan and an oxidoreductase polyphenol oxidase (PPO) was systematically investigated for the removal of bisphenol derivatives from aqueous medium. The process parameters, such as the pH value, temperature, and PPO concentration, were estimated to conduct the enzymatic...

journal_title：Environmental technology

authors： Kimura Y,Takahashi A,Kashiwada A,Yamada K

更新日期：2015-01-01 00:00:00

abstract：:Recently, activated carbon was investigated as an efficient heterogeneous metal-free catalyst to directly activate peroxymonosulfate (PMS) for degradation of organic compounds. In this paper, the reuse performance and the possible deactivation reasons of granular-activated carbon (GAC) and activated carbon fiber (ACF)...

journal_title：Environmental technology

authors： Yang S,Li L,Xiao T,Zhang J,Shao X

更新日期：2017-03-01 00:00:00

abstract：:Screened dairy manure, with a total solids content equal to 34.7 g TS l(-1), was subjected to a coagulation-flocculation treatment using FeCl, as coagulant and a medium cationic polyacrylamide (MCP1). The effect of changing doses of the additives (FeCl3 and MCP1) on the properties of supernatant fractions was studied ...

journal_title：Environmental technology

authors： Rico JL,García H,Rico C,Pérez N

更新日期：2006-02-01 00:00:00

abstract：:A horizontal flow multimedia stormwater filter was developed and tested for hydraulic efficiency and pollutant removal efficiency. Gravel, coconut (Cocos nucifera) fibre and sand were selected as the media and filled in 1:1:1 proportion. A fabric screen made up of woven sisal hemp was used to separate the media. The a...

journal_title：Environmental technology

authors： Samuel MP,Senthilvel S,Tamilmani D,Mathew AC

更新日期：2012-09-01 00:00:00

abstract：:To enhance the capture of low-level indoor CO2, a commercial zeolite (13X) was modified with alkali and alkaline earth metals using an ion-exchange method. Although the calcium-impregnated sorbent (zeo-Ca) showed the largest adsorption capacity, with a strong binding force for carbon dioxide, its regeneration by heat ...

journal_title：Environmental technology

authors： Lee KM,Lim YH,Jo YM

更新日期：2012-01-01 00:00:00

abstract：:Numerous methods have been described employing various materials for fluoride removal due to the risk of high fluoride dosing for human health. There is a broad collection of commercial products for adsorption applications. The materials most recommended are activated alumina and bone char. Nineteen commercial sorbent...

journal_title：Environmental technology

authors： Hernández-Montoya V,Elizalde-González MP,Trejo-Vázquez R

更新日期：2007-06-01 00:00:00

abstract：:We examined the biodegradation of varying amounts of artificially weathered Alaskan North Slope crude oil in laboratory microcosm test systems that use natural seawater and simulate spills in open water and on sandy beaches. The model bioremediation treatment consisted of periodic applications of marine bacteria, sele...

journal_title：Environmental technology

authors： Lepo JE,Cripe CR,Kavanaugh JL,Zhang S,Norton GP

更新日期：2003-10-01 00:00:00

abstract：:Algal blooms are a significant problem in the UK, particularly in water sources that supply potable water treatment works. A wide range of methods to control algae have been tested and, whilst many are effective, they all have disadvantages. The use of barley straw to control algal growth in reservoirs is one option t...

journal_title：Environmental technology

authors： Murray D,Jefferson B,Jarvis P,Parsons SA

更新日期：2010-04-01 00:00:00

abstract：:This study investigated the utilization of agricultural matrices as the support materials for cell immobilization to improve the technique of bioremediation. Coir, bulrush, banana stem and water hyacinth stem in both delignified and undelignified forms were used to immobilize Burkholderia cepacia PCL3 in bioremediatio...

journal_title：Environmental technology

authors： Laocharoen S,Plangklang P,Reungsang A

更新日期：2013-09-01 00:00:00

abstract：:Acid-functionalized multi-walled carbon nanotube (MWCNTs-COOH) was prepared by acid treatment followed by decoration with magnetite (Fe3O4) nanoparticles (Fe3O4/MWCNTs-COOH) by co-precipitation of Fe2+/Fe3+ in the colloidal suspension of MWCNTs-COOH. The adsorption capacity and separation efficiency of these two adsor...

journal_title：Environmental technology

authors： Temnuch N,Suwattanamala A,Inpaeng S,Tedsree K

更新日期：2020-03-18 00:00:00