Abstract:
:The effect of thermal pre-treatment on inoculum sludge for continuous H2 production from alkali hydrolysed rice straw using anaerobic baffled reactor (ABR) was investigated. Two reactors, ABR1 and ABR2, were inoculated with untreated and thermally pre-treated sludge, respectively. Both reactors were operated in parallel at a constant hydraulic retention time of 20 h and organic loading rate ranged from 0.5 to 2.16 g COD/L d. The results obtained indicated that ABR2 achieved a better hydrogen conversion rate and hydrogen yield as compared with ABR1. The hydrogen conversion rates were 30% and 24%, while the hydrogen yields were 1.19 and 0.97 mol H2/mol glucose for ABR2 and ABR1, respectively. Similar trend was observed for chemical oxygen demand (COD) and carbohydrate removal, where ABR2 provided a removal efficiency of 53 +/- 2.3% for COD and 46 +/- 2% for carbohydrate. The microbial community analysis using 16S rRNA phylogeny revealed the presence of different species of bacteria, namely Clostridium, Prevotella, Paludibacter, Ensifer, and Petrimonas within the reactors. Volatile fatty acids generated from ABR1 and ABR2 were mainly in the form of acetate and butyrate and a relatively low fraction ofpropionate was detected in ABR1. Based on these results, thermal pre-treatment ofinoculum sludge is preferable for hydrogen production from hydrolysed rice straw.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
El-Bery H,Tawfik A,Kumari S,Bux Fdoi
10.1080/09593330.2013.824013subject
Has Abstractpub_date
2013-07-01 00:00:00pages
1965-72issue
13-16eissn
0959-3330issn
1479-487Xjournal_volume
34pub_type
杂志文章abstract::Numerical simulations and experimental validations were conducted to determine grit removal efficiency and separation processes for inorganic suspended solids (ISS) with different particle sizes in a vortex-type grit chamber (Pista). The Euler-Lagrange method was used to simulate solid-liquid two-phase flow; the Unste...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1375025
更新日期:2018-12-01 00:00:00
abstract::Confined animal feeding operations are producing large amounts of organic waste with large fractions being mixtures of manure and sawdust. On one hand, the inhomogeneity of the material and the high water content restrict the optimal application of thermal treatment methods. On the other hand, the high concentration o...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1335350
更新日期:2018-07-01 00:00:00
abstract::Waste from textile industries can severely harm the environment. Dyes are the main residues of these effluents. Saccharomyces cerevisiae is already known to be an efficient adsorbent for the removal of dyes. However, the lack of applicability and limitation of the use of cell biomass in an industrial treatment makes i...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1340351
更新日期:2018-07-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2017.1400113
更新日期:2019-02-01 00:00:00
abstract::Contaminations by Staphylococcus aureus in food industry environments have been extended to industrial Effluent Treatment Plant (ETP). The methodologies used in ETP for bacterial removals and quality parameters adjustment commonly use products toxic to the environment, being mostly inefficient against virulent bacteri...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1754923
更新日期:2020-04-24 00:00:00
abstract::Hydrophobic volatile methyl siloxanes (VMS), such as hexamethyldisiloxane (L2) and octamethylcyclotetrasiloxane (D4), present a low solubility in water. An alternative treatment by absorption into hydrophobic absorbents was therefore studied. For this purpose, three different absorbents, motor oil, cutting oil and a w...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.804588
更新日期:2013-11-01 00:00:00
abstract::Understanding of mass transfer kinetics is important for biosorption of nitrogen compounds from palm oil mill effluent (POME) to gain a mechanistic insight into future biological processes for the treatment of high organic loading wastewater. In this study, the rates of global and sequential mass transfer were determi...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2017.1351494
更新日期:2018-09-01 00:00:00
abstract::Treatment of wastewater containing phenol using laboratory scale waste stabilisation ponds enriched with activated sludge was studied. After enrichment, the efficiency of these ponds under high phenol loading rates (i.e. up to 408 kg phenol ha(-1) day(-1)) was studied. At phenol loading rates of 6, 52, 312, 636 and 97...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330309385581
更新日期:2003-04-01 00:00:00
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 ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332708618629
更新日期:2006-02-01 00:00:00
abstract::Increasingly stricter ammonia and nitrogen release regulations with respect to wastewater effluents are creating a need for tertiary treatment systems. The moving bed biofilm reactor (MBBR) is being considered as an upgrade option for an increasing number of wastewater treatment facilities due to its small footprint a...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1077272
更新日期:2016-01-01 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
pub_type: 杂志文章
doi:10.1080/09593330802009410
更新日期:2008-01-01 00:00:00
abstract::Anaerobic biofilm reactors have limitations in treating wastewaters with low organic substrate concentrations (COD value below 1000 mg/L) because the substrate cannot reach the microorganisms present in the interior part of the biogranules. Hence, the performance of these reactors is mainly influenced by the size of t...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2010.492400
更新日期:2011-01-01 00:00:00
abstract::The aim of the study was to determine the biogas productivity from selected cultivars of sorghum (Sorghum bicolor Moench) and maize (Zea mays L.) depending on the dose of mineral fertilization with nitrogen. The topic is novelty in the northern Poland area due to the fact that this crop is not very widespread here. Th...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2019.1584251
更新日期:2020-09-01 00:00:00
abstract::In the present paper, the removal of aniline by adsorption process onto granular activated carbon (GAC) is reported from aqueous solutions containing catechol and resorcinol separately. The Taguchi experimental design was applied to study the effect of such parameters as the initial component concentrations (C(0,i)) o...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2011.592228
更新日期:2012-04-01 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::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::Coagulation process is highly influenced by solution pH, floc breakage, and coagulant aid. In this work, two-stage addition of alum-based coagulants, polyaluminum chloride (PACl) and aluminum sulfate (Al2(SO4)3), was compared to their one-stage addition with the same total dosage. The dose ratio of primary and seconda...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2020.1762757
更新日期:2020-05-19 00:00:00
abstract::Partial nitritation is an essential first step in anaerobic ammonium oxidation. This study compared the performance of air-lift partial nitritation reactors with attached growth (AG) and suspended growth (SG) without biomass retention using ammonium-rich recirculated liquor produced from the dewatering of anaerobicall...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2013.868037
更新日期:2014-05-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2019.1604815
更新日期:2020-10-01 00:00:00
abstract::The paper mainly focused on illustrating the merit of respirometric analysis in assessing the inhibitory/toxic impact of xenobiotics on substrate biodegradation. It also evaluated biodegradation characteristics of these chemicals at continuous exposure through acclimation ofthe microbial culture. The nature and role o...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2012.655323
更新日期:2012-07-01 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
pub_type: 杂志文章
doi:10.1080/09593330.2020.1739751
更新日期:2020-03-15 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
pub_type: 杂志文章
doi:10.1080/09593330.2020.1767699
更新日期:2020-05-23 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
pub_type: 杂志文章
doi:10.1080/09593330309385584
更新日期:2003-04-01 00:00:00
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 inter...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593332608618499
更新日期:2005-08-01 00:00:00
abstract::A novel system integrating an upflow anaerobic sludge blanket (UASB) reactor and a two-stage biological aerated filter (BAF) system was investigated as advanced treatment of heavy oil wastewater with large amounts of dissolved recalcitrant organic substances and low levels of nitrogen and phosphorus nutrients. #1 BAF,...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1030346
更新日期:2015-01-01 00:00:00
abstract::In this study, Fe(VI) was applied to treat three mine tailings containing different amounts of sulphides and heavy metals. Oxidation of sulphides by Fe(VI) was studied at pH 9.2 with variation of solid to solution ratio, Fe(VI) concentration and injection number of Fe(VI) solution. The major dissolved products from th...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.943300
更新日期:2015-01-01 00:00:00
abstract::This work proposed a new approach of reusing drinking water treatment residuals (WTR) in a continuous stirred tank reactor (CSTR) to remove phosphate (P) from urban wastewater. The results revealed that the P removal efficiency of the WTR was more than 94% for urban wastewater, in the condition of initial P concentrat...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2014.920050
更新日期:2014-11-01 00:00:00
abstract::The use of oxidoredutive enzymes in removing organic pollutants has been the subject of much research. The oxidation of phenolic compounds in the presence of chemical additives has been the focus of this study. In this investigation, the influence of the additives polyethylene glycol and Triton X-100 was evaluated in ...
journal_title:Environmental technology
pub_type: 杂志文章
doi:10.1080/09593330.2015.1112433
更新日期:2016-01-01 00:00:00
abstract::This paper reviews published work on the sorption of rare earth elements by microbial biomass. In a first part, the biosorption capacities and the various experimental conditions performed in batch reactor experiments are compared. Secondly, sorption modelling generally used in biosorption studies are described. Third...
journal_title:Environmental technology
pub_type: 杂志文章,评审
doi:10.1080/09593330309385681
更新日期:2003-11-01 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