Abstract:
:Due to the toxic effects of trichlorophenol (TCP) on microorganisms, biological treatment efficiencies of TCP containing wastewaters are usually low. Synthetic wastewater containing 2,4,6-TCP was biologically treated in a hybrid-loop bioreactor system consisting of a packed column biofilm and an aerated tank bioreactor with effluent recycle in order to improve COD and TCP removals. Effects of the feed TCP concentration on COD, TCP and toxicity removal performance of the system were investigated for the feed TCP between 50 and 450 mg L(-1) while the sludge age (solids retention time, SRT) and hydraulic residence time (HRT) were kept constant at 20 d and 25 h, respectively. Biomass concentrations in the packed column and in the aeration tank decreased with increasing feed TCP concentrations due to toxic effects of TCP on the organisms. Low biomass concentrations in the system at high feed TCP contents resulted in low COD, TCP and toxicity removals. Therefore, percent TCP, COD and toxicity removals decreased with increasing feed TCP concentrations especially above 400 mg L(-1). The effluent TCP concentrations were lower than 20 mg L(-1) for the feed TCP concentrations below 390 mg L(-1) resulting in TCP and COD removals above 90%. Specific rates of TCP and COD removals increased with the feed TCP due to low biomass concentrations at high TCP contents. The system should be operated at a feed TCP lower than 400 mg L(-1) in order to obtain more than 90% TCP, COD and toxicity removals under the specified experimental conditions.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Eker S,Kargi Fdoi
10.1016/j.jenvman.2008.01.001subject
Has Abstractpub_date
2009-02-01 00:00:00pages
692-8issue
2eissn
0301-4797issn
1095-8630pii
S0301-4797(08)00005-4journal_volume
90pub_type
杂志文章abstract::Fixed-bed reactor (FBR) is a promising technology for realising robust high-rate nitrification. Only a few studies have investigated the effect of salinity on these systems. In this research work, the effect of gradual stepwise increase in chloride concentration (NaCl content) on the performance of high-rate nitrifyin...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2019.05.020
更新日期:2019-08-01 00:00:00
abstract::The environmental conditions during culture enrichment, which ultimately determine its maximum specific biodegradation rate (qmax) and affinity for the target pollutant (Ks), play a key role in the performance of bioreactors devoted to the treatment of methane emissions. This study assessed the influence of Cu(2+) and...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2016.02.002
更新日期:2016-04-15 00:00:00
abstract::Terracing and rainfall characteristics notably influence the water erosion processes. However, an extensive long term in situ quantitative evaluation of the approaches to control the water erosion in different orchard terraces has not yet been performed, especially considering the increasing frequency and severity of ...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2020.111537
更新日期:2021-01-15 00:00:00
abstract::This paper investigates the Locally Managed Marine Area (LMMA) approach through looking at developments and challenges of community-based marine resource management over time, with a particular focus on Fiji in the South Pacific region. A diachronic perspective, based on two multi-method empirical studies, is used to ...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2018.05.029
更新日期:2018-08-15 00:00:00
abstract::Bacterial strain S20 was isolated and identified as Bacillus amyloliquefaciens based on physiological and biochemical characteristics and a 16S rRNA gene sequence analysis. Strain S20 inhibits the growth of Fusarium oxysporum and Ralstonia solanacearum. Some genes associated with the synthesis of some lipopeptides wer...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2014.01.043
更新日期:2014-05-01 00:00:00
abstract::Our research focuses on the linkage between land use planning policy and the spatial pattern of exposure to air toxics emissions. Our objective is to develop a modeling framework for assessment of the community health risk implications of land use policy. The modeling framework is not intended to be a regulatory tool ...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2006.03.011
更新日期:2007-04-01 00:00:00
abstract::We present results of mercury (Hg) in surface waters and soils and an analysis of satellite imagery from the Tapajós River basin, Brazilian Amazon, and the Reserva Garimpeira do Tapajós, the legal gold mining district of the basin. Hg bound to suspended sediment was roughly 600 and 200 times the concentration of disso...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2005.09.027
更新日期:2006-10-01 00:00:00
abstract::Understanding spatial patterns of forest fire is of key important for fire danger management and ecological implication. This aim of this study was to propose a new machine learning methodology for analyzing and predicting spatial patterns of forest fire danger with a case study of tropical forest fire at Lao Cai prov...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2019.01.108
更新日期:2019-05-01 00:00:00
abstract::Protein Rich Solution (PRS) was prepared from the sewage sludge with ultrasonic assistance. With PRS, aluminium based nanosheet like materials (AlNs) were synthesised for the ultrasonic removal of Congo Red (CR) and Crystal Violet (CV) dyes. PRS was characterised by UV, EEM and NMR spectral analysis. AlNs were charact...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2017.10.032
更新日期:2018-01-15 00:00:00
abstract::The leather industry uses a large amount of chemicals to transform a raw hide into finished leather. Chemicals are not fully taken up by leather and thus end up in tannery wastewater. Physicochemical and toxicological characterization of tannery effluents has been widely assessed. However, the characterization of proc...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2020.110787
更新日期:2020-09-01 00:00:00
abstract::The transport of nuclear or radioactive materials and the presence of nuclear powered vessels pose risks to the Northern Seas in terms of potential impacts to man and environment as well socio-economic impacts. Management of incidents involving actual or potential releases to the marine environment are potentially dif...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2016.02.012
更新日期:2016-04-15 00:00:00
abstract::Saline wetlands in the Monegros Desert, NE Spain, are situated in an agricultural landscape which is undergoing significant changes. Agricultural intensification in recent decades and current installation of new irrigation systems threaten these valuable habitats, set to be included in the Natura2000 network. Their pr...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2007.06.030
更新日期:2009-05-01 00:00:00
abstract::In this study, the absorption of carbon dioxide using an absorbent composed of 2-amino-2-methyl-L-propanol (AMP) + monoethanolamine (MEA) + piperazine (PZ) in asymmetric and symmetric polytetrafluoroethylene (PTFE) membrane contactors was investigated. Experiments were conducted using various gas flow rates, liquid fl...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2010.08.014
更新日期:2011-04-01 00:00:00
abstract::A potential and cost-effective treatment method utilizing thermally activated bentonite was evaluated for the treatment of highly loaded real petroleum processing wastewater (COD = 4500 mg/L) in order to reduce its COD and improve the corrosion properties. A save discharging COD limit of the treated effluent (800 mg/L...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2018.04.074
更新日期:2018-08-01 00:00:00
abstract::In this study the biosorption of Yellow RL, a metal-complex anionic dye, by dried Rhizopus arrhizus, a filamentous fungus, was investigated as a function of initial solution pH, initial dye concentration and initial salt (sodium chloride) concentration. The fungus exhibited the maximal dye uptake at pH 2 in the absenc...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2010.02.026
更新日期:2010-07-01 00:00:00
abstract::A two-stage inexact joint-probabilistic programming (TIJP) method is developed for planning a regional air quality management system with multiple pollutants and multiple sources. The TIJP method incorporates the techniques of two-stage stochastic programming, joint-probabilistic constraint programming and interval ma...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2010.10.027
更新日期:2011-03-01 00:00:00
abstract::Biofilm microbial communities and the water quality environment were studied in either carrier biofilm in isolation, or in combination with shrimp (Macrobrachium nipponense) from Baiyangdian Lake. Use of biofilm treatment effectively improved the water quality environment, however, the content of NH4-N, TN, and TP inc...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2018.05.063
更新日期:2018-09-15 00:00:00
abstract::The objective of this study is to apply a cradle-to-grave life cycle assessment to a gas-fired instantaneous water heater for domestic uses in order to identify the stages and processes with the largest impacts, as well as to evaluate the influence of different fuels (natural gas and liquefied petroleum gas) and count...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2019.109786
更新日期:2020-01-15 00:00:00
abstract::This paper presents a novel climate mitigation action index to evaluate various aspects linked to the implementation of Sustainable Energy Action Plans (SEAP), which define the carbon dioxide emission reduction targets and outline the key actions to achieve these at the municipal level. A SEAP Implementation Index (SI...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2019.110024
更新日期:2020-04-15 00:00:00
abstract::A pilot experimental field combining rewetting of reclaimed peaty soils and water phyto-treatment was set up in the Massaciuccoli Lake basin (Tuscany, Italy) to reduce the water eutrophication and peat degradation caused by almost a century of drainage-based agricultural use. In this paper, we investigated the restora...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2017.12.016
更新日期:2018-02-15 00:00:00
abstract::A sequencing batch reactor (SBR) with a working volume of 8 L and an exchange ratio of 25% was used to enrich biomass for the treatment of the anaerobically treated low pH palm oil mill effluent (POME). The influent concentration was stepwise increased from 5000 ± 500 mg COD/L to 11,500 ± 500 mg COD/L. The performance...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2014.07.023
更新日期:2014-12-15 00:00:00
abstract::Health of millions of people is threatened by the risk of drinking arsenic-contaminated water worldwide. Arsenic naturally conflicts with the concept of life, but recent studies showed that some microorganisms use toxic minerals as the source of energy. Hence, the researchers should consider the development of cost-ef...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2018.01.075
更新日期:2018-04-15 00:00:00
abstract::Water separation and recovery through thickening require adapted flocculants and densification processes. This study aimed to maximize water recovery from phosphate sludge (PS) at Kef Shfeir mine operation, Gafsa Phosphate Company, Tunisia. Representative samples of PS, PS treated with flocculant (F-PS), raw water, an...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2019.109801
更新日期:2020-01-15 00:00:00
abstract::Increases in use and changes in the behavior of visitors to parks and protected areas (PPAs) worldwide are challenging the ability of managers to provide for a quality visitor experience while also maintaining the integrity of natural resources. Understanding visitor motivations and spatial behaviors are important for...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2020.111841
更新日期:2021-02-15 00:00:00
abstract::In the work described here the technical and economic feasibilities of three Advanced Oxidation Processes (AOPs) have been studied: Conductive-Diamond Electrochemical Oxidation (CDEO), Ozonation and Fenton oxidation. The comparison was made by assessing the three technologies with synthetic wastewaters polluted with d...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2007.10.010
更新日期:2009-01-01 00:00:00
abstract::Surveillance for invasive non-indigenous species (NIS) is an integral part of a quarantine system. Estimating the efficiency of a surveillance strategy relies on many uncertain parameters estimated by experts, such as the efficiency of its components in face of the specific NIS, the ability of the NIS to inhabit diffe...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2009.03.011
更新日期:2009-06-01 00:00:00
abstract::An innovative ex situ soil washing technology was developed in this study to remediate organochlorine pesticides (OCPs) and heavy metals in a mixed contaminated site. Elevated temperature (60 °C) combined with ultrasonication (40 kHz, 20 min) at 50 mL L(-1) maize oil and 45 g L(-1) carboxylmethyl-β-cyclodextrin were e...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2014.03.025
更新日期:2014-08-01 00:00:00
abstract::Understanding the mechanisms underlying the recolonization of old-fields is critical to promote the recovery of the ecosystem functioning, particularly in regions where agricultural abandonment has increased in the last 60 years. Given that seed arrival and seedling survival often limit the recolonization process by w...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2019.109478
更新日期:2019-11-15 00:00:00
abstract::In this study, ASM41 (as-synthesised MCM-41), MCM-41, MCM-41 encapsulated with graphene oxide (MCM-41-GO) and reduced graphene oxide (MCM-41-G) were fabricated and utilized in the remediation of acetaminophen and aspirin from water. A surfactant template (cetyltrimethylammonium bromide) was added to ASM41 to make it m...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2017.12.037
更新日期:2018-03-01 00:00:00
abstract::Public perception towards contaminated site management, a not readily quantifiable latent parameter, was linked through structural equation modeling in this paper to 22 measurable/observable manifest variables associated with the extent of information dissemination and public knowledge of soil pollution, attitude towa...
journal_title:Journal of environmental management
pub_type: 杂志文章
doi:10.1016/j.jenvman.2018.01.029
更新日期:2018-03-15 00:00:00