Evaluation of a leaching process coupled with regeneration/recycling of the extractant for treatment of heavy metal contaminated solids.

abstract：:Landfill leachates are considered to be complex effluents of a variable composition containing many biorecalcitrant and highly toxic compounds. Considering the shortage of studies concerning the treatment of landfill leachates using ozone, as well as its combination with catalysts, the aim of this paper was to identif...

journal_title：Environmental technology

authors： Scandelai APJ,Sloboda Rigobello E,Oliveira BLC,Tavares CRG

更新日期：2019-02-01 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

authors： Kim YH,Carraway ER

更新日期：2002-10-01 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

authors： Tan G,Wang H,Xu N,Junaid M,Liu H,Zhai L

更新日期：2021-01-01 00:00:00

abstract：:This study investigated the biosorption kinetics and equilibrium of cadmium, nickel and zinc by activated sludge from a biological nutrient removal (BNR) process. A series of batch experiments with different initial metal concentrations were conducted to determine the metal removal in BNR sludge. The harvested sludges...

journal_title：Environmental technology

authors： Chang WC,Hsu CH,Chiang SM,Su MC

更新日期：2007-04-01 00:00:00

abstract：:The disposal processes like dewatering and anaerobic digestion (AD) are commonly utilized to reduce the volume of sludge and recover energy. Thermal hydrolysis process is widely used as a pretreatment for sludge AD, which can change rheological properties and dehydration of sludge irreversibly. The experiment was desi...

journal_title：Environmental technology

authors： Cao X,Pan Y,Jiang K,Zhu K,Ren X

更新日期：2020-03-15 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

authors： Dbira S,Bensalah N,Bedoui A

更新日期：2016-12-01 00:00:00

abstract：:In this paper, a removal of nitrogen compounds from a landfill leachate during reverse osmosis (RO) was evaluated. The treatment facility consists of a buffer tank and a RO system. The removal rate of N─NH4, [Formula: see text] and [Formula: see text] in the buffer tank reached 14%, 91% and 41%, respectively. The rela...

journal_title：Environmental technology

authors： Talalaj IA

更新日期：2015-05-01 00:00:00

abstract：:A lab-scale activated sludge sequencing batch reactor (SBR) was used to treat tank truck cleaning (TTC) wastewater with different operational strategies (identified as different stages). The first stage was an adaptation period for the seed sludge that originated from a continuous fed industrial plant treating TTC was...

journal_title：Environmental technology

authors： Caluwé M,Dobbeleers T,Daens D,Geuens L,Blust R,Dries J

更新日期：2018-10-01 00:00:00

abstract：:This paper discusses decolorization and chemical oxygen demand (COD) abatement in olive mill wastewaters (OMW) by Phanerochaetae chrysosporium grown in static, suspended and immobilised cultures. When P chrysosporium is used in cultures, no decolorization of crude OMW is observed. Decolorization occurs only after remo...

journal_title：Environmental technology

authors： Mebirouk M,Sbai L,Lopez M,Gonzalez J

更新日期：2006-12-01 00:00:00

abstract：:Water softening using the lime process leads to the production of large quantities of sludge. Determining the quantity of sludge produced and its dewatering properties is very important in the design, operation and cost of the subsequent sludge handling facilities. Presented are the results of a study on the partial s...

journal_title：Environmental technology

authors： Suthaker S,Smith DW,Stanley SJ

更新日期：1993-11-01 00:00:00

abstract：:Tertiary treatment of municipal wastewater by dissolved air flotation was studied on a pilot-scale. The effects of coagulant dose, flocculation pattern, dispersion water recycle ratio and hydraulic surface load on process performance were evaluated. The treatment of primary effluents by dissolved air flotation was inv...

journal_title：Environmental technology

authors： Koivunen J,Heinonen-Tanski H

更新日期：2008-01-01 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

authors： Cobbledick J,Zhang V,Rollings-Scattergood S,Latulippe DR

更新日期：2017-11-01 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

authors： Maheswari S,Murugesan AG

更新日期：2009-08-01 00:00:00

abstract：:The aim of this study was to investigate the individual and combined toxicity of dissolved copper-cadmium and mercury using the embriotoxicity test with Mytilus galloprovincialis. Adult stocks of Mytilus galloprovincialis were induced to spawn and early larvae were recorded after incubation of fertilized eggs in seawa...

journal_title：Environmental technology

authors： Prato E,Biandolino F

更新日期：2007-08-01 00:00:00

abstract：:The effects of pure oxygen aeration on organic pollutants removal performance and effluent soluble microbial products (SMP) characteristics of salt-tolerant sludge for the treatment of wastewater with the salinity from 1.0% to 3.5% were investigated. The results showed that the oxygen transfer efficiency of the pure o...

journal_title：Environmental technology

authors： Zhang HL,Hu YQ,Zhang Y,Qin DN,Wang H

更新日期：2020-10-27 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

authors： Zelinski J,Konieczynski J,Mateja-Losa E

更新日期：2004-01-01 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：:The photocatalytic degradation of many chlorinated organic compounds by semiconductor particles, has been widely recognised as a promising method of water and wastewater treatment process. In the present work the photocatalytic transformation of 2,4-D and MCPA in aqueous solution with 2 g l(-1) suspended TiO2 is demon...

journal_title：Environmental technology

authors： Djebbar K,Zertal A,Sehili T

更新日期：2006-11-01 00:00:00

abstract：:In the coal slurry scrubbing process, SO2 can be removed through both the coal pyrite leaching reaction and the oxidation reactions catalysed by Fe2+/Fe3+ produced in situ. In the present study, experiments of SO2 removal with coal slurry (particle size fraction 65-150 microm) were carried out using a double-stirred v...

journal_title：Environmental technology

authors： Sun W,Wang L,Liu J,Wang L,Zhang Y

更新日期：2013-09-01 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

authors： Boussouf I,Medjram MS,Ferroudj N,Abramson S

更新日期：2021-01-01 00:00:00

abstract：:Effects of Mo(6+) concentration on phototrophic hydrogen production of Rhodobacter sphaeroides were investigated using lactate as the sole carbon source. Results showed that an increase of Mo(6+) from nil to 1000 microg l(-1) led to increases in hydrogen yield, maximum production rate, conversion efficiency, biomass y...

journal_title：Environmental technology

authors： Fang HH,Li RY,Zhang T

更新日期：2011-08-01 00:00:00

abstract：:Compost stability assessment within different particle size fractions was studied. Humic acids (HAs) were extracted from two kinds of co-composts prepared using evaporated olive mill wastewater (OMSW) or solid waste from olive oil extraction (OC) and poultry manure (PM). The elemental composition, Fourier-transform in...

journal_title：Environmental technology

authors： Masmoudi S,Jarboui R,El Feki H,Gea T,Medhioub K,Ammar E

更新日期：2013-03-01 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

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：: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

authors： Nunes RF,Tominaga FK,Borrely SI,Teixeira ACSC

更新日期：2020-07-04 00:00:00

abstract：:Solid-solution bimetallic alloy catalysts containing no noble metals were developed via both simultaneous and sequential deposition in supercritical water (SCW). These bimetallic nano-catalysts were analyzed by Brunauer-Emmett-Teller, X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron micros...

journal_title：Environmental technology

authors： Guan Q,Kong Z,Xie Z,Chen Y,Chen S,Tian S,Ning P

更新日期：2019-07-01 00:00:00

abstract：:Arsenic present in water bodies causes devastating effects on aquatic organisms and indirectly poses a hazardous threat to human existence. There is an urgent need to develop potential and convincing technologies to troubleshoot this problem. In the present study, an adsorbent has been prepared using the waste red mud...

journal_title：Environmental technology

authors： Naga Babu A,Raja Sree T,Srinivasa Reddy D,Suresh Kumar G,Krishna Mohan GV

更新日期：2019-11-03 00:00:00

abstract：:An integrated OCO reactor with two side-ditch separators based on the anaerobic/anoxic/oxic (A2/O) process was developed for municipal wastewater treatment in this study. The effects of dissolved oxygen (DO) concentration, hydraulic retention time (HRT) and the ratio of chemical oxygen demand (COD) to total nitrogen (...

journal_title：Environmental technology

authors： Li D,Mao Y,Liu Z,Yin X,Lang C,Liu Y

更新日期：2014-09-01 00:00:00

abstract：:In this paper, catalytic samples of 10, 20, 30, 40 and 50% (w/w) urea/activated carbon fibre (AFC), 10% urea--5% La2O3/ACF, 10% urea--10% La2O3/ACF, 10% urea--15% La2O3/ACF, 20% urea--5% La2O3/ACF, 20% urea--10% La2O3/ACF, and 20% urea-15% La2O3/ACF were prepared and used for removal of NO under the condition of: NO, ...

journal_title：Environmental technology

authors： Lu P,Zeng Z,Li C,Zeng G,Guo J,Jiang X,Zhai Y,Fan X

更新日期：2012-04-01 00:00:00

abstract：:The presence of benzene and phenol in the environment can lead to serious health effects in humans and warrant development of efficient cleanup strategies. The aim of the present work was to assess the potential of indigenous endophytic bacterial strains to degrade benzene and phenol. Seven strains were successfully i...

journal_title：Environmental technology

authors： Iqbal A,Arshad M,Hashmi I,Karthikeyan R,Gentry TJ,Schwab AP

更新日期：2018-07-01 00:00:00

abstract：:ABSTRACT Biohythane (hydrogen + methane) production in a two stage dark fermentation (DF) and anaerobic digestion (AD) process from food waste (FW) has been studied. This paper investigated the effect of operation temperature, i.e. mesophilic (34 °C) and thermophilic (55 °C) , on biohythane yield and total energy reco...

journal_title：Environmental technology

authors： Ghimire A,Luongo V,Frunzo L,Lens PNL,Pirozzi F,Esposito G

更新日期：2021-01-06 00:00:00