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 by means of design of response surface using "Statgraphics Plus 3.0" program. The results showed that the values of concentrations found in supernatants obtained after settling of the flocs for two of the dependent variables studied, filtrate chemical oxygen demand (CODf) and total organic carbon (TOC), were significantly influenced by both the FeCl3 and MCP1 doses at an error lower than 5%. The values of concentrations of the remaining variables studied (TS, VS, CODt, CODvfa) were significantly influenced only by the MCP1 dose at an error lower than 5%. The predictive model obtained the best satisfactory parameters for TOC supernatant's concentration (R2=0.980, F-ratio = 438.89 (p-value < 0.05)) and the worse for VS (R2 = 0.783, F-ratio = 33.43 (p-value < 0.05)).
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Rico JL,García H,Rico C,Pérez Ndoi
10.1080/09593332708618629subject
Has Abstractpub_date
2006-02-01 00:00:00pages
143-51issue
2eissn
0959-3330issn
1479-487Xjournal_volume
27pub_type
杂志文章abstract::The demand for uniformly sized and shaped produce that are aesthetically pleasing results in significant food waste throughout the world. Cucumber waste is a major agricultural waste product in a number of countries, especially areas with high pickle production. Opportunity exists for wastewater treatment plants conta...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1601262
更新日期:2020-10-01 00:00:00
abstract::Alumina-zirconia (Al2O3-ZrO2) composite was prepared by combustion method and used to remove Congo red and Methylene blue from aqueous solutions. It was characterized using SEM-EDS, XRD and gas adsorption techniques. The results obtained from gas adsorption and SEM agree with each other, showing meso- and macro-porosi...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1652696
更新日期:2019-08-13 00:00:00
abstract::The nitrate removal rate of denitrifying granular sludge in an upflow sludge blanket reactor is very high and reaches up to 3.6 gNO3-N-gVSS-1 d-1 at a nitrate loading rate (NLR) of 32.0 gNO3-N L-1 d-1. However, the granular sludge exhibits flotation under high NLR conditions, where the granules become large in size (o...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.808250
更新日期:2014-01-01 00:00:00
abstract::Dispersion modelling was proved by researchers that most part of the models, including the regulatory models recommended by the Environmental Protection Agency of the United States (AERMOD and CALPUFF), do not have the ability to predict under complex situations. This article presents a novel evaluation of the propaga...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1205672
更新日期:2017-03-01 00:00:00
abstract::Lipase production by Staphylococcus xylosus and Rhizopus oryzae was investigated using a culture medium based on a mixture of synthetic medium and supernatants generated from tuna by-products and Ulva rigida biomass. The proportion of the three medium components was optimized using the simplex-centroid mixture design ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.765920
更新日期:2013-07-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2002.9619253
更新日期:2002-06-01 00:00:00
abstract::The role of carbonaceous sediment oxygen demand (CSOD) due to oxidation of sulfides reduced in oxygen dynamics in crude oil contaminated salt marshes was investigated through a mathematical model. An existing CSOD model was calibrated from laboratory data sets through nonlinear regression. The effect of oil and fertil...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/095933322086180326
更新日期:2001-07-01 00:00:00
abstract::This paper deals with the use of gasoline-methanol and gasoline-ethanol mixtures in a small four-stroke engine of internal combustion that is used for the movement of a small alternative generator. It was observed that CO and HC emissions decrease compared to gasoline when the percentage of methanol, ethanol in the fu...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330309385647
更新日期:2003-09-01 00:00:00
abstract::The application of air protection methods and technologies involves considerable investment and maintenance costs. Thus, to reduce overall expenditures an economic calculation of air pollution control, should be applied. This problem is connected in special way with areas of great population of inhabitants with spatia...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330409355438
更新日期:2004-01-01 00:00:00
abstract::The urban continuum, as it applies to sediments and associated contaminants, represents the area over/through which sediments are conveyed from a depositional or eroded surface to a treatment system and/or receiving water body. This study has focused on the changing physical characteristics of the sediment, with an em...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332508618433
更新日期:2002-01-01 00:00:00
abstract::Currently, CO2 emission is the main cause of climate change and its various related environmental impacts. Therefore, we have as a prime the development of clean sources of energy. The hydrogen economy is very attractive in this regard, however, when generated from the methane reform, there are also large-scale CO2 em...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1758218
更新日期:2020-05-04 00:00:00
abstract::The gene coding for xylose isomerase from the thermophilic bacterium Fervidobacterium gondwanense was cloned and overexpressed in Escherichia coli. The produced xylose isomerase (XylA), which closely resembles counterparts from Thermotoga maritima and T. neapolitana, was purified and characterized. It is optimally act...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330903486673
更新日期:2010-09-01 00:00:00
abstract::This study investigated the effects of biochar application with organic or mineral fertilizers on soil microbial biomass, and associated emissions of CO2 and CH4 under field settings planted with peanut. The results indicated that physicochemical properties of soil were improved under biochar application. Soil microbi...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1620344
更新日期:2021-01-01 00:00:00
abstract::Cocoa bean skin is a waste of chocolate industries that mostly contains hemicellulose, cellulose, and lignin. This material shows to be a promising feedstock for the production of liquid smoke and charcoal. The study was aimed to analyse the influence of temperature and heating rate of cocoa bean skin pyrolysis to the...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1520306
更新日期:2020-03-01 00:00:00
abstract::In this work, we report a stable g-C3N4, Bi2S3, and g-C3N4/Bi2S3 composite catalysts were prepared via a facile one-pot microwave-assisted method and characterized. The orthorhombic phase and nearly spherical shape of the particles with an average diameter of 5-25 nm of g-C3N4/Bi2S3 composite were obtained from XRD an...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1646323
更新日期:2019-07-25 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::Phosphorus is the key element to remove from aquatic environments to limit the growth of aquatic plants and algae and, thus, to control eutrophication. Because the upflow sludge blanket filtratio' (USBF) process, without addition of metal salts, entails low efficiency for phosphorus removal, we added an anaerobic reac...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2010.504235
更新日期:2011-04-01 00:00:00
abstract::The emission of greenhouse gases, such as N2O, from wastewater treatment plants is a matter of growing concern. Denitrification by ammonia-oxidizing bacteria (AOB) has been identified as the main N2O producing pathway. To estimate N2O emissions during biological nitrogen removal, reliable mathematical models are essen...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.758666
更新日期:2013-05-01 00:00:00
abstract::Aminophenols (AP) are synthetic intermediates in pharmaceutical, photographic and chemical dye industry. They can be released into the environment from wastewater and can react during water treatment processes. Therefore, it was interesting to study the oxidation of AP with chlorine and monochloramine in aqueous solut...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1025859
更新日期:2015-01-01 00:00:00
abstract::The reductive dechlorination of tetrachloroethene (PCE) and trichloroethene (TCE) catalyzed by vitamin B12 was examined when zero valent metals (ZVMs) were used as bulk electron donors in batch reactors. UV-visible spectra showed that zinc reduces vitamin B12 Co(III) to vitamin B12 Co(I) through B12 Co(II) and iron re...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332308618332
更新日期:2002-10-01 00:00:00
abstract::Untreated wastewater from the dye industry and dyehouses cannot be directly discharged into the environment due to the high content of organic matter and intensive colouration, even with low concentrations of dye. In this paper, the application of a high voltage pulsed electrical discharge in the aqueous phase has bee...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2004.9619370
更新日期:2004-07-01 00:00:00
abstract::There is considerable interest in recuperative thickening (RT), the recycling of partially digested solids in an anaerobic digester outlet stream back into the incoming feed, as a 'high-performance' process to increase biogas production, increase system capacity, and improve biosolids stabilization. While polymer floc...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1272639
更新日期:2017-11-01 00:00:00
abstract::Estimation of scaling-up parameters for a site restoration process using a surfactant-enhanced soil washing (SESW) process followed by the application of advanced oxidation processes (Fenton and photo-Fenton) was performed. For the SESW, different parameters were varied and the soil washing efficiency for pesticide (2...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.696721
更新日期:2013-01-01 00:00:00
abstract::This paper describes an application of aerobic respirometry to investigate the influence of humic matter (humate) on biological processes in dilution water and in municipal sewage. Standard product PolySeed, a consortium of bacteria considered to be representative of those found in an activated sludge, was used as a s...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330801984860
更新日期:2008-06-01 00:00:00
abstract::The inhibition of undesirable nitrite oxidizing bacteria (NOB) and desirable ammonium oxidizing bacteria (AOB) by free ammonia (FA) and free nitrous acid (FNA) in partial nitritation (PN) is crucially affected by the biomass growth mode (suspended sludge, biofilm, encapsulation). But, the limitations of these modes to...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1403491
更新日期:2019-02-01 00:00:00
abstract::Pseudomonas putida RW-II isolated from petroleum refinery wastewater was tested for hydrocarbon degradation potential in the presence of polycationic surfactant, cetyl trimethylammonium bromide (CTAB). The effects of CTAB on growth profile, cell surface hydrophobicity, cell adhesion, zeta potential and hydrocarbon bio...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.561877
更新日期:2011-12-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2017.1417492
更新日期:2019-04-01 00:00:00
abstract::How to utilize the shadows of buildings and greening to jointly improve the thermal cycle of the commercial pedestrian streets in hot and humid areas in southern China is a problem that needs to be discussed. This paper put forward related concepts of the invalid shadow area, valid shadow area, and thermal regulation ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1718215
更新日期:2020-02-06 00:00:00
abstract::High concentrations of heavy metals, such as arsenic, in soils have potential long-term environmental and health consequences due to their persistence in the environment and their associated toxicity to biological organisms. Aspergillus nidulans isolated from arsenic-contaminated soil has the potential to remove arsen...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330902971279
更新日期:2009-08-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2020.1740328
更新日期:2020-03-18 00:00:00