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 obtained for the prediction of dye degradation as a function of experimental variables such as peroxydisulfate concentration (0.1-0.5 mmol/L), initial AO7 concentration (5-25 mg/L), pH (3-9) and NM dosage (0.25-1.25 g/L) after 105 min of treatment. The calculated results by the model were consistent with the experimental results (R2 = 0.959). Furthermore, the model is suitable to estimate the optimum operational conditions and determine the effects of the parameters for maximum AO7 degradation. Eventually, gas chromatography-mass spectroscopy was used for the recognition of the dye degradation by-products.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Aghdasinia H,Arehjani P,Vahid B,Khataee Adoi
10.1080/09593330.2016.1267804subject
Has Abstractpub_date
2017-10-01 00:00:00pages
2486-2496issue
19eissn
0959-3330issn
1479-487Xjournal_volume
38pub_type
杂志文章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
pub_type: 杂志文章
doi:10.1080/09593330.2013.871352
更新日期:2014-05-01 00:00:00
abstract::One of the main problems of the Whole Effluent Toxicity is related to the use of bioindicator species representative of the target environment. Most wastewater discharges are of fresh water, so their salinity has to be adjusted when they are discharged to transitional and marine coastal waters, in order to perform tox...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330802505094
更新日期:2009-01-01 00:00:00
abstract::In this study, we investigated the application of sludge waste obtained from a coal mine drainage treatment facility that treats acid mine drainage (designated as AMD) from metal-mine water. The coal mine drainage sludge (designated as CMDS), which contained 70% goethite and 30% calcite, was utilized as a sorption mat...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330903573215
更新日期:2010-10-01 00:00:00
abstract::The aim of this study was to contribute to the knowledge on the dynamic of the microbial community involved in anaerobic degradation of different concentrations of 2-chlorophenol (2CP, from 28 to 196 mg 2CP-C/L) and a mixture of 2CP and phenol (from 28 to 196 mg phenol-C/L) and its relationship with the respiratory pr...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1010595
更新日期:2015-07-01 00:00:00
abstract::Cell agglomeration studies were conducted in anaerobic fluidized bed reactors without any external support. Granulation was studied at different combinations of loading and mixing conditions utilizing synthetic wastewater. Both single-stage and two-stage biomethanation processes were studied. Reactors of volume 0.55, ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332608618514
更新日期:2005-07-01 00:00:00
abstract::In this study, poly(N-isopropylmethacrylamide-co-methacrylic acid) microgels prepared by free radical precipitation polymerization were used as micro-reactors for the synthesis and stabilization of silver nanoparticles. UV-Visible spectroscopy, Transmission Electron Microscopy and Fourier-transform infrared spectrosco...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1435737
更新日期:2019-06-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2020.1730981
更新日期:2020-02-28 00:00:00
abstract::Phosphorus recovery from wastewater is a focus area in Denmark; the aim is to recover at least 80% of the phosphorus. In order to extract phosphorus, surplus sludge from wastewater treatment plants was acidified (pH 2-4) to increase the dissolved phosphorus concentration, which then can be precipitated and recovered. ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1588385
更新日期:2020-09-01 00:00:00
abstract::The performance of a laboratory-scale upflow anaerobic sludge blanket (UASB) reactor and a duckweed pond containing Lemna gibba was investigated for suitability for treating effluent for use in aquaculture. While treating low-strength sewage having a chemical oxygen demand (COD) of typically less than 200 mg/L, with a...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.633103
更新日期:2012-06-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2013.781226
更新日期:2013-09-01 00:00:00
abstract::A charge-coupled device camera was used for the optical monitoring of activated sludge flocs and filaments, and the image analysis results were compared with the effluent clarity at a full-scale activated sludge plant during a three-month period. The study included a maintenance stoppage at the wastewater treatment pl...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.875065
更新日期:2014-08-01 00:00:00
abstract::Different pretreatments (electrolysis, centrifugation and autoclaving) coupled with Chlorella vulgaris biological system was used for the treatment of poultry manure anaerobic-digested effluents. The pretreated effluents were used as the growth medium for algal cultivation. The pollutant removal efficiencies of the co...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.963695
更新日期:2015-03-01 00:00:00
abstract::Layered double hydroxides are antitype 2/1 clay minerals that can be synthesized rapidly under laboratory conditions. Due to their high anion exchange capacities, layered double hydroxides have been investigated as potential adsorbents for removal of anionic contaminants from aqueous systems. In this study, uncalcined...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332208618178
更新日期:2001-12-01 00:00:00
abstract::The speciation of mercury in tropical coastal areas, although scarcely studied, has presented an odd behaviour when compared with the results obtained in temperate environments. In this work, we measured the concentrations of mercury species (mercuric mercury, methyl-mercury and dimethyl-mercury) in the sediments of S...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332308618357
更新日期:2002-08-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2018.1554006
更新日期:2020-06-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2014.997296
更新日期:2015-05-01 00:00:00
abstract::The present study evaluated the phytotoxicity effect of goat manure (GM) collected from six different regions in South Korea, namely, Chupungnyeong (T1), Hoengseong (T2), Goesan (T3), Sancheong (T4), Jangsu (T5) and Namwon (T6). Phytotoxicity was assessed by means of the analysis of germination index (GI), relative se...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1239657
更新日期:2017-05-01 00:00:00
abstract::Problems have been found in the traditional post-positioned down-flow biological activated carbon filter (DBACF), such as microorganism leakage and low biodegradability. A pilot test was carried out to place a BACF between the sediment tank and the sand filter; a new technology of dual media up-flow aerated biological...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.770556
更新日期:2013-07-01 00:00:00
abstract::The effects of two seed sludge types, namely conventional activated sludge (CAS) and membrane bioreactor sludge (MBS), on aerobic granulation were investigated. The treatment performances of the reactors were monitored during and after the granulation. Operational period of 37 days was described in three phases; Phase...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.925513
更新日期:2014-11-01 00:00:00
abstract::Depositional and flow patterns are first described to gain an understanding of the erosion patterns during hydraulic flushing in a reservoir. Considering the importance of this issue, two modes of flushing operation for control of sedimentation were performed in several experiments with different reservoir geometries....
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330902990162
更新日期:2009-07-01 00:00:00
abstract::Hexavalent chromium introduced to the water ecosystem is an important issue due to the toxic effect it poses. The first step of conventional treatment of wastewaters containing hexavalent chromium is its reduction to chromium (III) which is less toxic. The use of industrial waste material for the reduction of chromium...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332508618368
更新日期:2004-11-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2019.1595164
更新日期:2020-09-01 00:00:00
abstract::Coal gasification waste water treatment needed a sustainable and affordable plan to eliminate the organic contaminants in order to lower the potential environmental and human health risk. In this paper, a laboratory-scale anaerobic-aerobic intermittent system carried out 66 operational cycles together for the treatmen...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1049215
更新日期:2015-01-01 00:00:00
abstract::The present research work is aimed at providing an economically feasible solution for the farmers to exploit the mixed organic wastes (MOW) as resources for the generation of biogas based electrical power and utilize the same for irrigation purpose to reduce the dependence on electricity board. A full scale biomethana...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1523232
更新日期:2020-04-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2017.1420699
更新日期:2019-04-01 00:00:00
abstract::Elemental balances of microbial growth have been applied to calculate (C/N) ratio in a denitrification process. The correlation between biomass yield coefficient and degree of reduction has been used to estimate the critical (C/N) ratio. It has been shown that when the degree of reduction of the substrate is lower tha...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332708618624
更新日期:2006-01-01 00:00:00
abstract::Soil contaminated by organic pollutants, especially chlorinated aromatic compounds such as DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane), is an environmental concern because of the strong sorption of organochlorine pesticide onto the soil matrix and persistence in the environment. The remediation of organochlori...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.568009
更新日期:2011-12-01 00:00:00
abstract::A single-chambered packing-type anaerobic fluidized microbial fuel cell (AFBMFC) with coking wastewater (CWW) as fuel was built to treat CWW, which not only has high treating efficiency, but also can convert organic matter in wastewater into electricity. AFBMFC was constructed by using anaerobic sludge that was domest...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1290147
更新日期:2017-12-01 00:00:00
abstract::A novel complexing membrane containing 8-hydroxyquinoline groups was used for the removal of heavy metal ions (Cd2+ and Ni2+) from aqueous solution. The functionalized membranes were characterized by FTIR-ATR, SEM and EDAX for the presence of functional groups, the physical structure of the membranes and the analysis ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.576703
更新日期:2012-02-01 00:00:00
abstract::Incinerators do not achieve a complete mineralization of organic constituents of municipal solid waste. Bottom ash (main solid residue from incineration process) still contains a small quantity of carbon (1 to 5% in weight). This study is about characterisation of the carboned fraction (without carbonates) present in ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330309385637
更新日期:2003-08-01 00:00:00