Removal of emerging perfluorooctanoic acid and perfluorooctane sulfonate contaminants from lake water.

abstract：:Total solids (TS) concentrations ranging from 15 to 66 g L(-1) of starch industry wastewater (SIW) were tested as raw material for the production of Bacillus thuringiensis var. kurstaki HD-1 (Btk) biopesticide in shake flasks and a 15 L bench-scale fermenter. Shake flask studies revealed a higher delta-endotoxin conce...

journal_title：Environmental technology

authors： Vu KD,Tyagi RD,Brar SK,Valéro JR,Surampalli RY

更新日期：2009-04-01 00:00:00

abstract：:A lab-scale fluidized bed bioreactor with high-density polyethylene as biofilm carrier media was operated to study partial nitrification (PN) performance with high ammonia concentrations. The system was run at nitrogen loading rates (NLRs) from 1.2 to 4.8 kg N/(m3 d) with empty bed contact time of 2.0 and 2.7 h and fo...

journal_title：Environmental technology

authors： Wang H,Kim M,Li K,Shao Y,Zhu J,Nakhla G

更新日期：2019-01-01 00:00:00

abstract：:The production of phosphoric acid from natural phosphate rock leads to an industrial waste called phosphogypsum (PG). About 5 tons of PG are generated per ton of phosphoric acid produced. This acidic waste (pH 2.2) is mostly disposed of by dumping into large stockpiles close to fertilizer production units, where they ...

journal_title：Environmental technology

authors： Ayadi A,Chorriba A,Fourati A,Gargouri-Bouzid R

更新日期：2015-05-01 00:00:00

abstract：:The adsorption-desorption of copper ions and a mixture of five metal ions (cadmium, copper, nickel, lead and zinc) in aqueous solutions by a spruce sawdust column was reported. Different studies about the copper binding mechanism, the efficiency of some regenerating solutions for the copper desorption, the use of colu...

journal_title：Environmental technology

authors： Marin J,Ayele J

更新日期：2003-04-01 00:00:00

abstract：:A response surface methodology (RSM) involving a central composite design was applied to the modelling and optimization of a preparation of Mn/active carbon nanocatalysts in NH3-SCR of NO at 250 degrees C and the results were compared with the artificial neural network (ANN) predicted values. The catalyst preparation ...

journal_title：Environmental technology

authors： Mousavi SM,Niaei A,Salari D,Panahi PN,Samandari M

更新日期：2013-05-01 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

abstract：:Removing protozoa from a water supply using coagulation, flocculation, dissolved air flotation (DAF) and filtration on a bench scale was evaluated. Calcium carbonate flocculation with and without immunomagnetic separation (IMS) was chosen to detect Giardia spp. cysts and Cryptosporidium spp. oocysts in the studied sam...

journal_title：Environmental technology

authors： Andreoli FC,Sabogal-Paz LP

更新日期：2019-02-01 00:00:00

abstract：:Activated carbon was prepared from soybean dregs using chemical activation by zinc chloride. The influence of activation parameters such as impregnation ratio, activation temperature and carbonization time was investigated. The physicochemical properties of activated carbon were characterized using SEM, FTIR, BET and ...

journal_title：Environmental technology

authors： Li Y,Li Y,Zang H,Chen L,Meng Z,Li H,Ci L,Du Q,Wang D,Wang C,Li H,Xia Y

更新日期：2020-06-01 00:00:00

abstract：:This study presents a comparison of denitrification rates and denitrification stoichiometry when using different sources of carbon. Denitrification tests were carried out in test bottles containing water and soil samples acquired at a nitrate-contaminated site and supplemented with either sucrose, acetate or ethanol. ...

journal_title：Environmental technology

authors： Lorrain MJ,Tartakovsky B,Peisajovich-Gilkstein A,Guioti SR

更新日期：2004-09-01 00:00:00

abstract：:The deposition of noble metal on titanium dioxide (TiO2) has been considered as an effective strategy to improve the activity of TiO2. In this paper, TiO2 nanoparticles were prepared via a sol-gel route, followed by heat treatment at elevated temperatures. TiO2-Pt catalyst was prepared by deposition of platinum (Pt) o...

journal_title：Environmental technology

authors： Fan JW,Liu XH,Zhang J

更新日期：2011-02-01 00:00:00

abstract：:Textural, structural and morphological characteristics of the vitreous tuff were determined by means of several physicochemical techniques. The nitrogen adsorption isotherm at 77 K was fitted with the Brunnauer-Emmet-Teller model and together with the results of the average pore distribution showed a mesoporous materi...

journal_title：Environmental technology

authors： Blanco-Flores A,Colín-Cruz A,Gutiérrez-Segura E,Sánchez-Mendieta V,Solís-Casados DA,Garrudo-Guirado MA,Batista-González R

更新日期：2014-05-01 00:00:00

abstract：:This study investigated the feasibility of using acrylonitrile-butadiene-styrene (ABS) waste plastic and nonmetal particles from waste printed circuit boards (WPCB) to manufacture reproduction composites (RC), with the aim of co-recycling these two waste resources. The composites were prepared in a twin-crew extruder ...

journal_title：Environmental technology

authors： Sun Z,Shen Z,Zhang X,Ma S

更新日期：2015-01-01 00:00:00

abstract：:The research on the Columbia River Basalt is a unique combination of projects that minimise CO2 emissions to the atmosphere. Both are underground waste disposal projects: CO2 waste versus nuclear waste. The recent Wallula CO2 project and the previous nuclear-waste project in the Columbia River Basalt (CRB), USA, provi...

journal_title：Environmental technology

authors： Schwartz MO

更新日期：2020-09-09 00:00:00

abstract：:Paramagnetic materials, such as ferric hydroxides, which are cost-effective and highly-efficient, have been little studied in relation to the magnetic separation process. In this study, freshly formed hydrous ferric oxide (HFO) sols were used to remove aqueous phosphate, followed by superconducting magnetic separation...

journal_title：Environmental technology

authors： Li Y,Li Z,Xu F,Zhang W

更新日期：2017-02-01 00:00:00

abstract：:Treated wastewater in micro-irrigation is a promising approach that could be used to decrease the pressure on good quality water resources. However, the clogging of such systems due to biofilm development and chemical precipitation constitute a constraint with the use of treated wastewater (TWW) and lead to lower irri...

journal_title：Environmental technology

authors： Rizk N,Ait-Mouheb N,Molle B,Roche N

更新日期：2021-01-01 00:00:00

abstract：:With their wide application, some nanomaterials entering into the environment and made effects in many ways. Different concentrations of Fe3O4 nanoparticles (NPs) were added (0, 100, 200, 400 and 600 mg/L) in this study, the changes of substance in three stages of anaerobic digestion (AD) were explored, the optimal do...

journal_title：Environmental technology

authors： Gong L,Yang X,You X,Wang J,Zhou J,Zhou Y,Yang J

更新日期：2019-10-09 00:00:00

abstract：:The effects of ozonation on sludge disintegration should be investigated before the application of ozone during biological treatment, in order to minimize excess sludge production. In this study, changes in sludge and supernatant after ozonation of return activated sludge were investigated for seven different ozone do...

journal_title：Environmental technology

authors： Demir O,Filibeli A

更新日期：2012-09-01 00:00:00

abstract：:A process consisting of anaerobic hydrolysis, denitrification, and oxidation/nitrification was proposed for simultaneous removal of carbon and nitrogen from terramycin crystallizing mother solution (TCMS), and its performance was investigated by treating diluted TCMS in a lab-scale continuous flow column system. Direc...

journal_title：Environmental technology

authors： Ma W,Yang M,Wang J,Qi R,Ren L

更新日期：2002-06-01 00:00:00

abstract：:To understand the effect of forests and wetlands on air quality, the PM10 and PM2.5 concentration and meteorological data were collected in the forest and wetland in the Beijing Olympic Forest Park in China from May 2106 to May 2017. The blocking rates of forest and wetland to PMs were calculated under different air q...

journal_title：Environmental technology

authors： Cong L,Zhang H,Zhai J,Yan G,Wu Y,Wang Y,Ma W,Zhang Z,Chen P

更新日期：2020-07-01 00:00:00

abstract：:Over the past few decades, several technologies have been developed to recover phosphorus (P) as struvite from wastewater. Although these technologies have achieved reasonable P-removal efficiencies, these technologies are associated with several shortcomings such as high capital and operating costs, longer crystalliz...

journal_title：Environmental technology

authors： Ghosh S,Lobanov S,Lo VK

更新日期：2019-06-01 00:00:00

abstract：:Optimization of Acid Orange 7 (AO7) treatment using heterogeneous Fenton-like method in a recirculating fluidized-bed reactor (FBR) was investigated by using central composite design (CCD). Natural magnetite (NM) as Fenton-like catalyst was characterized using scanning electron microscopy. A nonlinear CCD model was ob...

journal_title：Environmental technology

authors： Aghdasinia H,Arehjani P,Vahid B,Khataee A

更新日期：2017-10-01 00:00:00

abstract：:Carbon-doped titanium dioxide photocatalyst with improved performance in visible light was prepared via the typical sol-gel method. Microcrystalline cellulose (MCC) was used as carbon elements source. The prepared pure and carbon-doped TiO2 samples were calcined at 400-650°C in air and the effect of annealing temperat...

journal_title：Environmental technology

authors： Habibi S,Jamshidi M

更新日期：2020-10-01 00:00:00

abstract：:The high concentration of heavy metals in solid wastes may cause serious pollution during thermal treatment. We have investigated, theoretically and experimentally, the effects of several important flue gas species and mineral sorbents on the partitioning behaviour of four major heavy metals (cadmium, lead, zinc and c...

journal_title：Environmental technology

authors： Huang Q,Cai X,Alhadj Mallah MM,Chi Y,Yan J

更新日期：2015-01-01 00:00:00

abstract：:Treatment of sewage sludge (SS) by biodegradable polyacrylamide-based flocculants (PAM) is considered to be an effective way to increase total solids' (TS) content prior to anaerobic digestion (AD). However, data on how PAM addition influences the efficiency of AD process are quite contradictory; moreover, no data are...

journal_title：Environmental technology

authors： Litti Y,Nikitina A,Kovalev D,Ermoshin A,Mahajan R,Goel G,Nozhevnikova A

更新日期：2019-04-01 00:00:00

abstract：:This study was conducted to investigate the possible relationship between a molecular biological investigation and water quality parameters in monitoring groundwater pollution at the immediate boundary of uncontrolled landfills and their downgradient aquifers, which may consequently facilitate unbiased monitoring for ...

journal_title：Environmental technology

authors： Park HA,Han JS,Kim CG

更新日期：2008-07-01 00:00:00

abstract：:Maturation ponds are excellent natural treatment systems for disinfecting domestic wastewater from pathogenic bacteria because of their great sunlight exposure through depth and high pH and dissolved oxygen values - all considered important factors. Escherichia coli (E. coli) removal is higher at closer to the surface...

journal_title：Environmental technology

authors： Dias DFC,von Sperling M

更新日期：2018-03-01 00:00:00

abstract：:The usefulness of the electrical resistivity method for characterization of contaminated sites has been studied in many ways. The most commonly used device is a cone penetrometer that utilizes two or four electrodes to measure electrical resistivity (or conductivity) during a cone penetration test (CPT) along a vertic...

journal_title：Environmental technology

authors： Ahn T,Allouche EN,Yanful EK

更新日期：2007-06-01 00:00:00

abstract：:In this study, rice husk ash-silica/graphene oxide (RHA-SiO2/GO) nanocomposites were synthesized by the in situ method using (3-aminopropyl) triethoxysilane as a coupling agent. The obtained products were used to remove lead ions (Pb2+) from aqueous solution. Effects of SiO2:GO mass ratio, contact time, pH and initial...

journal_title：Environmental technology

authors： Thy LTM,Hau DT,Lien LTK,Hung NDH,Tu TH,Nam HM,Hieu NH,Thanh Phong M

更新日期：2019-12-10 00:00:00

abstract：:Currently available pore water samplers generally do not allow continuous monitoring of temporal variations in pore water composition. Therefore, a new type of pore water collector was designed and constructed. These collectors were constructed of polyvinyl chloride (PVC) materials, including PVC tubing with one end s...

journal_title：Environmental technology

authors： Gao F,Deng J,Li Q,Hu L,Zhu J,Hang H,Hu W

更新日期：2012-01-01 00:00:00

abstract：:The clay soil in the middle and lower reaches of the Yangtze River in China is widely distributed and the groundwater table is shallow. In order to accurately analyze the distribution and assess the potentially harmful effects of the pollutants in this region, it's necessary to study the diffusion rate and subsequent ...

journal_title：Environmental technology

authors： Gao C,Guo X,Shao S,Wu J

更新日期：2020-05-23 00:00:00