Critical Reviews in Environmental Science and Technology (CRIT REV ENV SCI TEC )

Publisher: Taylor & Francis


Topics: Waste and wastewater treatment; Fate and transport of contaminants; Bioremediation; Soil contamination; Wetland function and design; Waste reduction, recycling, and reuse; Air, soil, and water contaminant biogeochemistry; Risk assessment and management; Environmental toxicology and epidemiology.

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    Critical reviews in environmental science and technology (Online), Critical reviews in environmental science and technology, CRC journals critical reviews in environmental science and technology
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    Document, Periodical, Internet resource
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    Internet Resource, Computer File, Journal / Magazine / Newspaper

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Taylor & Francis

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    • STM: Science, Technology and Medicine
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    • 'Taylor & Francis (Psychology Press)' is an imprint of 'Taylor & Francis'
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Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Conventional water treatment consumes large quantities of coagulant and produces even greater volumes of sludge. Coagulant recovery (CR) presents an opportunity to reduce both the sludge quantities and the costs they incur, by regenerating and purifying coagulant before reuse. Recovery and purification must satisfy stringent potable regulations for harmful contaminants, while remaining competitive with commercial coagulants. These challenges have restricted uptake and lead research towards lower-gain, lower-risk alternatives. This review documents the context in which CR must be considered, before comparing the relative efficacies and bottlenecks of potential technologies, expediting identification of the major knowledge gaps and future research requirements.
    Critical Reviews in Environmental Science and Technology 12/2014; 44(24).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Advanced oxidation processes (AOPs) constitute important, promising, efficient, and environmental-friendly methods developed to principally remove persistent organic pollutants (POPs) from waters and wastewaters. Generally, AOPs are based on the in situ generation of a powerful oxidizing agent, such as hydroxyl radicals (•OH), obtained at a sufficient concentration to effectively decontaminate waters. This critical review presents a precise and overall description of the recent literature (period 1990–2012) concerning the main types of AOPs, based on chemical, photochemical, sonochemical, and electrochemical reactions. The principles, performances, advantages, drawbacks, and applications of these AOPs to the degradation and destruction of POPs in aquatic media and to the treatment of waters and waste waters have been reported and compared.
    Critical Reviews in Environmental Science and Technology 12/2014; 44(23).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Nitrate contamination of drinking water sources has become one of the most important water quality concerns across the United States. Nitrate presents unique water treatment challenges and small water systems are particularly affected by the high costs of addressing nitrate impacted supplies. The goal of this investigation was to provide an overview of nitrate treatment options, highlighting the most recent advances and elucidating costs and common problems in application. No single treatment option is ideal for all situations; new technologies continue to be investigated to effectively remove nitrate while limiting cost and maximizing sustainability.
    Critical Reviews in Environmental Science and Technology 10/2014; 44(20).
  • [Show abstract] [Hide abstract]
    ABSTRACT: This review provides a comprehensive overview about nonextractable residue (NER) formation and attempts to classify the various types. Xenobiotic NER derived from parent pesticides (or other environmental contaminants) and primary metabolites sorbed or entrapped within the soil organic matter (Type I) or covalently bound (Type II) pose a considerably higher risk than those derived from productive biodegradation. However, biogenic nonextractable residues (bioNER) (Type III) resulting from conversion of carbon (or nitrogen) from the compounds into microbial biomass molecules do not pose any risk. Experimental approaches to clearly distinguish between the types are provided, and a model to prospectively estimate bioNER formation in soil is proposed.
    Critical Reviews in Environmental Science and Technology 10/2014; 44(19).
  • Critical Reviews in Environmental Science and Technology 10/2014;
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    ABSTRACT: Biological methane (CH4) mitigation combined with bio-polymer (PHA-polyhydroxyalkaonate/PHB-polyhydroxybutyrate) production is a viable option in this fossil fuel-constrained era. Methantrophs are bacteria that can re-route CH4 into PHA/PHB under nutrient-starved conditions. However, most studies (up to 90%) investigated pure cultures to demonstrate capacity for PHA/PHB accumulation, which on an industrial scale is unlikely to be serviceable. Furthermore, commercialization is handicapped as there are still number of unresolved issues which affect productivities, such as optimized process variables, characterization of robust consortia and optimized reactor design. This review will summarize existing knowledge and highlight research needs to fast track methanotrophic PHA/PHB production from CH4.
    Critical Reviews in Environmental Science and Technology 10/2014;
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    ABSTRACT: Phosphorus is known to be an important contributor to eutrophication of aquatic systems,1 but the role of organic phosphorus is often overlooked. This review uses a meta-analysis approach to investigate inorganic and organic phosphorus in organic fertilizers, soils and waters, including the quantification of organic phosphorous forms such as monoesters, diesters, and inositol hexakisphosphate. Across these media, organic phosphorus comprised 22–46% of the total phosphorus (by mass of phosphorus). Bioavailable organic phosphorus appears to be more mobile than recalcitrant forms. Organic phosphorus may represent a significant risk for eutrophication, and the risk may vary according to the season, but conclusions are hampered by a lack of data.
    Critical Reviews in Environmental Science and Technology 10/2014; 44(19).
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    ABSTRACT: The monitoring of human exposures to diesel exhaust continues to be a vexing problem for specialists seeking information on the potential health effects of this ubiquitous combustion product. Exposure biomarkers have yielded a potential solution to this problem by providing a direct measure of an individual's contact with key components in the exhaust stream. Spurred by the advent of new, highly sensitive, analytical methods capable of detecting substances at very low levels, there have been numerous attempts at identifying a stable and specific biomarker. Despite these new techniques, there is currently no foolproof method for unambiguously separating diesel exhaust exposures from those arising from other combustion sources.Diesel exhaust is a highly complex mixture of solid, liquid, and gaseous components whose exact composition can be affected by many variables, including engine technology, fuel composition, operating conditions, and photochemical aging. These factors together with those related to exposure methodology, epidemiological necessity, and regulatory reform can have a decided impact on the success or failure of future research aimed at identifying a suitable biomarker of exposure. The objective of this review is to examine existing information on exposure biomarkers for diesel exhaust and to identify those factors and trends that have had an impact on the successful identification of metrics for both occupational and community settings. The information will provide interested parties with a template for more thoroughly understanding those factors affecting diesel exhaust emissions and for identifying those substances and research approaches holding the greatest promise for future success.
    Critical Reviews in Environmental Science and Technology 08/2014; 44(16).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Historically, municipal solid waste landfills have been designed and operated as disposal facilities with suboptimal degradation under anaerobic conditions, resulting in slow waste stabilization and generation of landfill gas rich in methane and high strength leachate. Recently, aerobic bioreactor landfilling is being promoted as a promising method that enhances waste stabilization while producing a relatively weaker leachate and no methane generation. The authors review transformation processes and benefits associated with aerobic bioreactor landfilling. Factors affecting the operation of aerobic bioreactor landfills were detailed and performance indicators were defined with technical and operational considerations. The article emphasizes conditions for economic viability of the technology and concludes with outlining existing gaps and future research needs to improve the understanding and performance of aerobic bioreactor landfilling.
    Critical Reviews in Environmental Science and Technology 08/2014; 44(16).
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    ABSTRACT: Cyanobacteria (blue-green algae) are most primitive prokaryotic photosynthetic organisms, that have survived and flourished on the planet for more than three billion years and produced the oxygen that enabled aerobic metabolism. Anabaena is a genus of filamentous cyanobacteria, known for its nitrogen fixing abilities and is one of cyanobacterial genera that produce toxins. Because of plasmid DNA, the non-toxic strain of Anabaena flos-aquae, transformed into a toxic strain that producing neuro-toxins. The major toxins those were produced by this species are anatoxin-a, homoanatoxin-a and anatoxin-a(s). Presence of these toxins in the source of fresh water makes water toxic and every year so many reports on death of animals were documented. Several studies have been done over this toxic cyanobacteriam and showed that under controlled environment this species is very useful for human being. However presence of this alga in the water sources makes environment toxic. Several analytical methods were reported for the detection of these toxins. The present review will be focused on the detailed literature survey on fresh water cyanobacteriam, Anabaena flos-aquae, with respect to its importance and cure.
    Critical Reviews in Environmental Science and Technology 07/2014; 44(18):1995-2037.
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    ABSTRACT: This review examines the potential environmental impact of radiofrequency (RF) fields emitted by mobile phone base station antennas and other sources of RF radiation. Overall, many alarming investigations were found but most are characterised by severe methodological shortcomings. For this reason these studies do not provide any evidence that observed biological effects are associated with exposure to the electromagnetic fields. So far, the studies do not prove that environmental exposures to mobile phone base station radiation (and other environmental RF exposures) are harmful to wildlife.
    Critical Reviews in Environmental Science and Technology 06/2014; 44(12).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Online drinking water quality monitoring technologies have made significant progress for source water surveillance and water treatment plant operation. The use of these technologies in the distribution system has not been favorable due to the high costs associated with installation, maintenance, and calibration of a large distributed array of monitoring sensors. This has led to a search for newer technologies that can be economically deployed on a large scale. This paper includes a brief description of important parameters for drinking water and current available technologies used in the field. The paper also provides a thorough review of the advances in sensor technology for measurement of common water quality parameters (pH, turbidity, free chlorine, dissolved oxygen, and conductivity) in drinking water distribution systems.
    Critical Reviews in Environmental Science and Technology 06/2014; 44(12).
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the last decade, extensive studies have been conducted to understand the chemical and biological processes of nanoparticles and their effects on ecological functions and human health. This review focuses on the nature and properties of natural nanoparticles (NNPs) and their influence on the physical, chemical, and biological processes in plant-soil-water systems. The NNPs are involved directly or indirectly in numerous soil processes such as aggregate formation, nutrient retention, microbial activities, and water purification and pollution mitigation and thus affect soil/environment quality and human health. This paper is intended to provide a brief review of recent progress in related fields.
    Critical Reviews in Environmental Science and Technology 05/2014;
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    ABSTRACT: Large amounts of airborne microorganisms are emitted from livestock production. These emitted microorganisms may associate with dust, and are suspected to pose a risk of airborne infection to humans in vicinity and to animals on other farms. However, the extent to which airborne transmission may play a role in the epidemic, and how dust acts as a carrier of microorganisms in the transmission processes is unknown. The authors present the current knowledge of the entire process of airborne transmission of microorganisms—from suspension and transportation until deposition and infection—and their relation to dust. The sampling and the mitigation techniques of airborne microorganisms and dust in livestock production systems are introduced as well.
    Critical Reviews in Environmental Science and Technology 05/2014; 44(10).
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    ABSTRACT: Solid wastes containing sulfate are an important source of pollution, which can create a lot of environmental problems, especially during disposal management at landfill sites. These solid wastes, such as construction and demolition (C&D) debris and phosphogypsum, cause odor problems and possible health impacts to landfill employees and surrounding residents. These wastes do not only contain high sulfate concentrations, but also contain toxic metals and radioactive compounds. Although these wastes can be reused as soil amendment or to make building materials, a concern has been raised by regulators regarding to the chemical characteristics of the material and the potential risks to human health and the environment. Therefore, use of these solid wastes has been banned in most countries. In addition, soils containing solid sulfate (gypsum), namely gypsiferous soils, have several problems during agricultural development. Reduction of the sulfate content of these solid wastes, soils and sediments by biological sulfate reduction is an option to overcome the previously mentioned problems. The authors review the topics necessary for developing biological sulfate removal technologies from these sulfate rich solid wastes as well as soils and sediment types (i.e., their contamination by sulfate minerals, solid sulfate as an electron acceptor for sulfate reducing bacteria, and sulfate reduction processes both in natural and in bioengineered reactor systems).
    Critical Reviews in Environmental Science and Technology 05/2014; 44(10).
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    ABSTRACT: Nanohybrid of graphene oxide (GO) and azide-modified Fe3O4 nanoparticles (NPs) were fabricated using click reaction. First, Fe3O4 NPs were modified by 3-azidopropionic acid. Then, click-coupling of azide-modified Fe3O4 NPs with alkyne-functionalized GO was carried out in the presence of CuSO4.5H2O and sodium L-ascorbate at room temperature. The attachment of Fe3O4 NPs onto the graphene nanosheets (GNS) was confirmed by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy, transition electron microscopy (TEM), thermogravimetric analysis, energy dispersive X-ray (EDX) spectrometry and X-ray diffraction spectrometry. As the FTIR and EDX analysis showed, the final magnetic GNS were also reduced by sodium ascorbate which is a merit for click-coupling reactions. The specific saturation magnetization of the Fe3O4-clicked GO was 44.3 emu g-1 and the average size of the NPs was obtained to be 24 nm using TEM image. The synthesized hybrid was used in the adsorption of MB and CR. The adsorption capacities in the concentration range studied were 109.5 and 98.8 mg g-1 for MB and CR, respectively.
    Critical Reviews in Environmental Science and Technology 04/2014;