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You searched for: Journal Environmental technology Remove constraint Journal: Environmental technology Publication Year 2017 Remove constraint Publication Year: 2017 Source 2017 v.38 no.20 Remove constraint Source: 2017 v.38 no.20
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1. Adsorption isotherm, kinetic and mechanism of expanded graphite for sulfadiazine antibiotics removal from aqueous solutions

Author:
Zhang, Ling; Wang, Yong; Jin, SuWan; Lu, QunZan; Ji, Jiang
Source:
Environmental technology 2017 v.38 no.20 pp. 2629-2638
ISSN:
1479-487X
Subject:
adsorbents; adsorption; antibiotics; aqueous solutions; chlorides; environmental technology; graphene; heat production; hydrophobic bonding; ionic strength; models; pH; sodium hydroxide; sorption isotherms; sulfadiazine; temperature
Abstract:
... The adsorption of sulfadiazine from water by expanded graphite (EG), a low cost and environmental-friendly adsorbent, was investigated. Several adsorption parameters (including the initial sulfadiazine concentration, contact time, pH of solution, ionic strength and temperature) were studied. Results of equilibrium experiments indicated that adsorption of sulfadiazine onto EG were better described ...
DOI:
10.1080/09593330.2016.1272637

2. A simplified stoichiometric kinetic model for estimating the concentration of reaction products in anaerobic digestion

Author:
Kim, Moonil; Cui, Fenghao
Source:
Environmental technology 2017 v.38 no.20 pp. 2573-2580
ISSN:
1479-487X
Subject:
anaerobic digesters; anaerobic digestion; biodegradability; computer software; environmental technology; kinetics; simulation models; temperature; wastewater
Abstract:
... Modelling the anaerobic digestion process is often complex and needs to consider many input parameters. This study simplified the modelling procedure by developing an idealized stoichiometric kinetic model that simulates the anaerobic digestion process with only a few parameters: composition coefficients (α and β), maximum substrate utilization rate (q ₘₐₓ), endogenous-decay coefficient (b), biode ...
DOI:
10.1080/09593330.2016.1271018

3. Assessment of the UV/Cl2 advanced oxidation process for the degradation of the emerging contaminants amitriptyline hydrochloride, methyl salicylate and 2-phenoxyethanol in water systems

Author:
Javier Benitez, F.; Real, Francisco J.; Acero, Juan L.; Casas, Francisco
Source:
Environmental technology 2017 v.38 no.20 pp. 2508-2516
ISSN:
1479-487X
Subject:
bicarbonates; chlorine; dissolved organic matter; environmental technology; hydrogen peroxide; ions; methyl salicylate; oxidants; oxidation; pH; photochemistry; ultraviolet radiation; wastewater
Abstract:
... Three emerging contaminants (amitriptyline hydrochloride (AH), methyl salicylate (MS) and 2-phenoxyethanol (PE)) frequently found in wastewaters were selected to be individually degraded in ultra-pure water by the advanced oxidation process (AOP) constituted by the combination of UV radiation and chlorine. The influence of pH, initial chlorine concentration and nature of the contaminants was first ...
DOI:
10.1080/09593330.2016.1269836

4. Cationic surfactant-modified biosorption of anionic dyes by dried Rhizopus arrhizus

Author:
Kodal, Süheyla Pınar; Aksu, Zümriye
Source:
Environmental technology 2017 v.38 no.20 pp. 2551-2561
ISSN:
1479-487X
Subject:
Rhizopus arrhizus; adsorption; biosorption; cationic surfactants; cetyltrimethylammonium bromide; dyes; environmental technology; fungi; microbial biomass; models; pH; sorption isotherms
Abstract:
... The biosorption of an anionic dye Remazol Black B onto a filamentous, dried fungus, Rhizopus arrhizus , was studied in the presence of the cationic surfactant cetyl trimethyl ammonium bromide (CTAB), which was used as a pH shifter. Without surfactant, the maximum dye uptake capacity was achieved at pH 2.0 and was 434.0 mg dye g ⁻¹ dried fungal biomass. Again, without surfactant, the highest dye up ...
DOI:
10.1080/09593330.2016.1270357

5. Characteristics of flocs formed by polymer-only coagulation in water treatment and their impacts on the performance of downstream membrane separation

Author:
Maeng, Sung Kyu; Timmes, Thomas C.; Kim, Hyun-Chul
Source:
Environmental technology 2017 v.38 no.20 pp. 2601-2610
ISSN:
1479-487X
Subject:
chlorides; coagulants; coagulation; dimethylamine; environmental technology; epichlorohydrins; fouling; fractal dimensions; microfiltration; neutralization; organic matter; polymers; water treatment; zeta potential
Abstract:
... Two different quaternary amine polymers were examined as primary coagulants for the removal of natural organic matter (NOM) and concurrent production of flocs favorable for downstream membrane separation. The primary issue explored was the relationship between various coagulation conditions on the floc characteristics and the subsequent performance of microfiltration when filtering coagulated NOM. ...
DOI:
10.1080/09593330.2016.1271460

6. Cosmetic wastewater treatment by the ZVI/H2O2 process

Author:
Bogacki, Jan; Marcinowski, Piotr; Zapałowska, Ewa; Maksymiec, Justyna; Naumczyk, Jeremi
Source:
Environmental technology 2017 v.38 no.20 pp. 2589-2600
ISSN:
1479-487X
Subject:
chemical oxygen demand; environmental technology; gas chromatography; headspace analysis; hydrogen peroxide; ions; iron; mass spectrometry; mixing; pH; solid phase microextraction; statistical analysis; wastewater treatment
Abstract:
... The ZVI/H ₂O ₂ process was applied for cosmetic wastewater treatment. Two commercial zero-valent iron (ZVI) types with different granulations were chosen: Hepure Ferrox PRB and Hepure Ferrox Target. In addition, the pH and stirring method influence on ZVI/H ₂O ₂ process efficiency was studied. During the ZVI and ZVI/H ₂O ₂ processes, linear Fe ions concentration increase was observed. The addition ...
DOI:
10.1080/09593330.2016.1271020

7. Decolorization of Congo Red by Phanerochaete chrysosporium: the role of biosorption and biodegradation

Author:
Bosco, Francesca; Mollea, Chiara; Ruggeri, Bernardo
Source:
Environmental technology 2017 v.38 no.20 pp. 2581-2588
ISSN:
1479-487X
Subject:
Phanerochaete chrysosporium; agar; biodegradation; biomass; biosorption; decolorization; environmental technology; in vitro studies; lignin peroxidase; malt extract; manganese peroxidase; mycelium; temperature
Abstract:
... The degradation of Congo Red by means of Phanerochaete chrysosporium BKM-F-1767 is reported in this work. Solid and liquid cultures have been prepared to evaluate in viv o biodegradation as well as the role of biosorption phenomena on mycelium. Moreover, in vitro tests have been performed to define the influence of MnP on dye decolorization. P. chrysosporium , cultivated on Malt Extract Agar in th ...
DOI:
10.1080/09593330.2016.1271019

8. Effect of gradual-increasing aeration mode in an aerobic tank on nutrients’ removal and functional microbial communities

Author:
Zhao, Yang-Guo; Guo, Xiaoma; She, Zonglian; Gao, Mengchun; Guo, Liang
Source:
Environmental technology 2017 v.38 no.20 pp. 2621-2628
ISSN:
1479-487X
Subject:
Acinetobacter; Clostridium; Dechloromonas; Thauera; aeration; ammonia; bacteria; bioreactors; chemical oxygen demand; denitrification; environmental technology; genes; high-throughput nucleotide sequencing; microbial communities; nitrogen; nitrogen content; nutrients; phosphorus; ribosomal RNA; tanks; wastewater
Abstract:
... Different aeration rates and modes in an aerobic tank of an anaerobic/anoxic/aerobic (A ²O) process were investigated to reveal their influence on nitrogen and phosphorus removal efficiency. Meanwhile, Illumina high-throughput sequencing of partial 16S rRNA gene of bacteria was conducted to monitor the abundance and composition of microbial communities. The results showed that higher aeration rate ...
DOI:
10.1080/09593330.2016.1272636

9. Effects of inoculum to substrate ratio and co-digestion with bagasse on biogas production of fish waste

Author:
Xu, Jie; Mustafa, Ahmed M.; Sheng, Kuichuan
Source:
Environmental technology 2017 v.38 no.20 pp. 2517-2522
ISSN:
1479-487X
Subject:
anaerobic digestion; bagasse; biogas; environmental technology; fish waste; inoculum; methane
Abstract:
... To overcome the biogas inhibition in anaerobic digestion of fish waste (FW), effects of inoculum to substrate ratio (I/S, based on VS) and co-digestion with bagasse on biogas production of FW were studied in batch reactors. I/S value was from 0.95 to 2.55, bagasse content in co-digestion (based on VS) was 25%, 50% and 75%. The highest biogas yield (433.4 mL/gVS) with 73.34% methane content was obt ...
DOI:
10.1080/09593330.2016.1269837

10. Hydroxyapatite-based sorbents: elaboration, characterization and application for the removal of catechol from the aqueous phase

Author:
Sebei, Haroun; Pham Minh, Doan; Lyczko, Nathalie; Sharrock, Patrick; Nzihou, Ange
Source:
Environmental technology 2017 v.38 no.20 pp. 2611-2620
ISSN:
1479-487X
Subject:
ambient temperature; aqueous solutions; atmospheric pressure; calcium carbonate; catechol; environmental technology; hydroxyapatite; mixing; models; nitrates; pollutants; potassium dihydrogen phosphate; sorbents; sorption; wastewater; zinc
Abstract:
... Hydroxyapatite (HAP) is highly considered as good sorbent for the removal of metals from the aqueous phase. However, soluble metals co-exist with organic pollutants in wastewaters. But little work has been devoted to investigate the reactivity of HAP for the removal of organic compounds. The main objective of this work is to study the reactivity of HAP-based sorbents for the removal of catechol as ...
DOI:
10.1080/09593330.2016.1271829

11. Improvement of municipal wastewater pretreatment by direct membrane filtration

Author:
Nascimento, Thiago A.; Mejía, Fanny R.; Fdz-Polanco, Fernando; Peña Miranda, Mar
Source:
Environmental technology 2017 v.38 no.20 pp. 2562-2572
ISSN:
1479-487X
Subject:
activated sludge; anaerobic treatment; chemical oxygen demand; energy recovery; environmental technology; hydrolysis; microfiltration; municipal wastewater; particulates; streams; temperature; total solids; ultrafiltration; viability
Abstract:
... The high content of particulate matter in municipal wastewater hinders the conventional anaerobic treatments at psychrophilic temperatures. The hydrolysis of the particulate chemical oxygen demand (pCOD) could be the limiting step under these conditions. Therefore, new pretreatments or improved conventional pretreatments are needed in order to separate pCOD. In this work, direct membrane filtratio ...
DOI:
10.1080/09593330.2016.1271017

12. Investigation on evaluation criteria of backwashing effects for a pilot-scale BAF treating petrochemical wastewater

Author:
Fu, Liya; Wu, Changyong; Zhou, Yuexi; Zuo, Jiane; Ding, Yan
Source:
Environmental technology 2017 v.38 no.20 pp. 2523-2533
ISSN:
1479-487X
Subject:
BTEX (benzene, toluene, ethylbenzene, xylene); air; ammonium nitrogen; benzene; bioactive properties; biofilters; biomass; chemical oxygen demand; environmental technology; ethylbenzene; microorganisms; oxygen; phenol; sludge; toluene; wastewater; xylene
Abstract:
... Parameters for evaluation criteria of air–water backwashing effects of a pilot-scale biological aerated filter (BAF) treating petrochemical wastewater were investigated. The parameters included the suspended solids (SS) and specific oxygen uptake rate (SOUR) of the backwashing effluent, recovery of the BAF after backwashing, and the removal of the biomass/bioactivity attached on the filter media a ...
DOI:
10.1080/09593330.2016.1269838

13. Microbial degradation of total petroleum hydrocarbons in crude oil: a field-scale study at the low-land rainforest of Ecuador

Author:
Maddela, Naga Raju; Scalvenzi, Laura; Venkateswarlu, Kadiyala
Source:
Environmental technology 2017 v.38 no.20 pp. 2543-2550
ISSN:
1479-487X
Subject:
Artemia salina; Bacillus cereus; Bacillus thuringiensis; Geomyces; Pseudogymnoascus pannorum; bacteria; biodegradation; bioremediation; cowpeas; environmental technology; feasibility studies; fungi; hydrocarbons; inoculum; oil fields; petroleum; rain forests; seed germination; soil; soil sampling; toxicity; viability; Amazonia; Ecuador
Abstract:
... A field-level feasibility study was conducted to determine total petroleum hydrocarbon (TPH)-degrading potential of two bacterial strains, Bacillus thuringiensis B3 and B. cereus B6, and two fungi, Geomyces pannorum HR and Geomyces sp. strain HV, all soil isolates obtained from an oil field located in north-east region of Ecuador. Crude oil-treated soil samples contained in wooden boxes received a ...
DOI:
10.1080/09593330.2016.1270356

14. Remediation of groundwater contaminated with the lead–phenol binary system by granular dead anaerobic sludge-permeable reactive barrier

Author:
Faisal, Ayad A. H.; Abd Ali, Ziad T.
Source:
Environmental technology 2017 v.38 no.20 pp. 2534-2542
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; alkanes; aqueous solutions; aquifers; biosorption; computer software; computers; environmental technology; groundwater; lead; longevity; phenol; remediation; sandy soils; sludge
Abstract:
... Computer solutions (COMSOL) Multiphysics 3.5a software was used for simulating the one-dimensional equilibrium transport of the lead–phenol binary system including the sorption process through saturated sandy soil as the aquifer and granular dead anaerobic sludge (GDAS) as the permeable reactive barrier. Fourier-transform infrared spectroscopy analysis proved that the carboxylic and alcohol groups ...
DOI:
10.1080/09593330.2016.1270355