Abstract:
:The efficiency of an anaerobic biological treatment for the reduction of essential contaminants of produced water from an offshore oilfield was investigated using a microbial consortium enriched with sulphate-reducing bacteria (SRB). Experiments were conducted in a bench bioreactor at 35 degrees C, 250 rpm, with intermittent purges of N2 gas in order to establish anaerobic conditions and to remove the H2S generated. The results showed that pH control effectively influenced the activity of the anaerobic bacteria leading to COD removal of 57%. Meanwhile, pH control was found to have no influence on the removal efficiencies of oil and grease and total phenols. In all experiments, removals of oil and grease and total phenols of 60% and 58-67%, respectively, were obtained after a 15-day process. In studies carried out with biomass reuse the reductions obtained were 61% for oil and grease and 78% for total phenols over the same period. Such results point to the technical feasibility of anaerobic biodegradation for oilfield wastewater treatment.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Vieira DS,Sérvulo EF,Cammarota MCdoi
10.1080/09593332608618499subject
Has Abstractpub_date
2005-08-01 00:00:00pages
915-22issue
8eissn
0959-3330issn
1479-487Xjournal_volume
26pub_type
杂志文章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
pub_type: 杂志文章
doi:10.1080/09593330.2017.1400113
更新日期:2019-02-01 00:00:00
abstract::The behavior of cyanobacteria and its potential use for biofuel production in scale-up conditions is a topic of growing importance. The aim of our work is to study the effects of illumination, stirring, and different growth phases on the cultivation of the cyanobacteria Spirulina platensis in 10 L raceways. The cultiv...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1340352
更新日期:2018-07-01 00:00:00
abstract::An anaerobic membrane bioreactor (MBR) was operated for 367 days to treat domestic wastewater originating from the Sfax wastewater treatment plant. The results showed that the MBR was not very efficient because of the considerable fluctuations in the domestic wastewater composition and the presence of toxic compounds ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330903100027
更新日期:2009-12-01 00:00:00
abstract::Ferrous ion-activated persulphate and hydrogen peroxide were studied for the treatment of real high-strength industrial effluent. The Fenton process demonstrated greater organic load removal, biodegradability improvement and toxicity reduction as well as lower treatment cost than the activated persulphate system. Howe...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1069899
更新日期:2016-01-01 00:00:00
abstract::Maghemite/silica nanocomposite microspheres (γ-Fe2O3/SiO2 MS) have been tested as magnetically separable heterogeneous Fenton catalyst in beidellite clay slurries in the presence of methylorange (MO) as a model pollutant. Due to its strong magnetic susceptibility, the catalyst was easily recovered from the clay slurri...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1620865
更新日期:2021-01-01 00:00:00
abstract::Acid mine drainage (AMD) is the major effluent generated from metal and coal mines, causing serious ecological risks and degradation of aquatic habitats and surrounding soil quality. Biochemical passive reactors (BPRs) are an option for improving AMD affected water. This study investigates the effect of the size and c...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1864024
更新日期:2020-12-30 00:00:00
abstract::The utilization of foul condensate (FC) collected from a Kraft pulp mill for the anaerobic production of volatile fatty acids (VFA) was tested in upflow anaerobic sludge blanket (UASB) reactors operated at 22, 37 and 55°C at a hydraulic retention time (HRT) of ∼75 h. The FC consisted mainly of 11370, 500 and 592 mg/L ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1703823
更新日期:2020-01-13 00:00:00
abstract::There is increasing pressure to upgrade effluent ponds for phosphorus removal. Active slag filters offer a solution, but design information is limited. Hydraulic retention time (HRT) is a key factor in filter design because it controls filter treatment efficiency as well the filter substrate lifespan. This paper repor...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.689365
更新日期:2013-01-01 00:00:00
abstract::This study investigated the effect of various intermittent aeration (IA) cycles on organics and nutrient removal, and microbial communities in an integrated fixed-film activated sludge (IFAS) reactor treating municipal waste water. Average effluent biological oxygen demand (BOD), chemical oxygen demand (COD), total su...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1281349
更新日期:2017-11-01 00:00:00
abstract::A highly sensitive and selective optical chemosensor (Arg-Rhoen) for determination of Au3+ was prepared by covalent immobilization of rhodamine ethylenediamine on agarose gel. Spectrophotometric studies of complex formation, chemical structures and purity of the hydrogel sensor were carried out using TGA, NMR, TEM, an...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1850873
更新日期:2020-12-07 00:00:00
abstract::This study explored the feasibility of progressive freeze concentration in boron removal and its concentration in aqueous solution. The influence of three key parameters in progressive freeze concentration on boron removal and concentration, namely, the advance speed of the ice front, the circumferential velocity of t...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1255663
更新日期:2017-09-01 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::This study describes a method to formulate struvite fine powder into pellets that are easy to spread on agricultural land. To evaluate the quality of produced pellets, some chemical and physical properties commonly measured for fertilizers were tested. The findings indicated that the salt index and heavy metal content...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.676073
更新日期:2012-12-01 00:00:00
abstract::Large volumes of saline (> 2% w/v NaCl) wastewaters are discharged from many industries; e.g. seafood processing, textile dyeing, oil and gas production, tanneries and drinking water treatment processes. Although anaerobic treatment would be the most cost-effective and sustainable technology for the treatment of many ...
journal_title:Environmental technology
pub_type: 杂志文章,评审
doi:10.1080/09593331003734202
更新日期:2010-07-01 00:00:00
abstract::Phytoremediation is a cost-effective and eco-friendly process to remove heavy metals from water. A small-scale experiment was conducted to determine the phytoremediation efficiency of two macrophytes, i.e. Pistia stratiotes and Eichhornia crassipes for the removal of chromium and copper from the prepared metal solutio...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2018.1540662
更新日期:2020-05-01 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::UV/persulfate (UV/PS) technologies have gained increased attention as efficient alternatives for removing pollutants from different classes, although processes based on the UVA-driven [Formula: see text] (PS) activation have not yet been discussed in the literature for the removal of the nonionic surfactant nonylpheno...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1786166
更新日期:2020-07-04 00:00:00
abstract::Red mud, an industrial by-product generated during the processing of bauxite ore, was investigated as an inexpensive and effective adsorbent for the adsorption of methylene blue from aqueous solution. Chemical and heat treatments were applied to the raw red mud. The effects of contact time, adsorbent amount, pH, tempe...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2010.529946
更新日期:2011-08-01 00:00:00
abstract::The characteristics and water/oil sorption effectiveness ofkapok fibre, sugarcane bagasse and rice husks have been compared. The three biomass types were subjected to field emission scanning electron microscopy-energy dispersive X-ray spectroscopy and surface tension analyses for liquid-air and oil-water systems were ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.579185
更新日期:2012-02-01 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::Current concern over the potentially negative impacts of climate change has brought attention to anthropogenic sources of methane, a primary greenhouse gas. Two such emission sources are methane leakage at heavy oil wells and sanitary landfills. At both of these sources, substantial quantities of methane could potenti...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332208618315
更新日期:2001-01-01 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::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::Experiments on the simultaneous removal of mercury (Hg0), sulphur dioxide (SO2) and nitric oxide (NO) from flue gas using sodium chlorite solution (NaClO2) were carried out in a bench-scale bubbling reactor. The effect of initial pH on Hg0 removal efficiency was investigated. The results show that the efficiency of Hg...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330802573795
更新日期:2009-03-01 00:00:00
abstract::In the present paper, the potential of the foamed emulsion bioreactor (FEBR), a novel biological reactor for air pollution control was evaluated. Experimental data obtained on a laboratory-scale prototype were used to scale-up the process for a hypothetical case consisting of a contaminated air flow rate of 10,000 m(3...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332708618675
更新日期:2006-06-01 00:00:00
abstract::The unique properties of nanoparticles create broad opportunities as regards their application in almost all disciplines of science and technology. There are many reports about the negative influence of nanoproducts on the environment and humans. Therefore, it is of vital importance to explore the impact of metal nano...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1740331
更新日期:2020-03-16 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
pub_type: 杂志文章
doi:10.1080/09593330.2016.1267804
更新日期:2017-10-01 00:00:00
abstract::The aim of this paper was, on one hand, to study the treatment of raw tannery effluent by infiltration percolation system and, on the other hand, to determine the distribution and speciation of chromium in the used soil. The system pilot consisted of columns filled to 15 cm of gravel and 60 cm of soil (88% of sand). T...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330801983888
更新日期:2008-06-01 00:00:00
abstract::Combustion processes are known to produce organic micro-pollutants in the flue gas at concentrations ranging over several orders of magnitude. Some organic micro-pollutants are suspected of being pseudo-estrogens and as such they can affect the public health. In this study, the possible application of the yeast based ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332508618415
更新日期:2002-03-01 00:00:00
abstract::Uric acid (UA) is one of the principal effluents of urine wastewaters, widely used in agriculture as fertilizer, which is potentially dangerous and biorefractory. Hence, the degradation of UA (2,6,8-trihydroxy purine) in aqueous solution of pH 3.0 has been studied by conductive-diamond electrochemical oxidation. Hydro...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2016.1173115
更新日期:2016-12-01 00:00:00