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Journal of Environmental Management

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https://www.readbyqxmd.com/read/29793209/effect-of-thermal-pretreatment-on-chemical-composition-physical-structure-and-biogas-production-kinetics-of-wheat-straw
#1
Asad Ayub Rajput, Zeshan, Chettiyappan Visvanathan
Hard lignocellulosic structure of wheat straw is the main hindrance in its anaerobic digestion. Thus, a laboratory scale batch experiment was conducted to study the effect of thermal pretreatment on anaerobic digestion of wheat straw. For this purpose, different thermal pretreatment temperatures of 120, 140, 160 and 180 °C were studied and the results were compared with raw wheat straw. Significant differences in biogas production were observed at temperature higher than 160 °C. Highest biogas yield of 615 Nml/gVS and volatile solids reduction of 69% was observed from wheat straw pretreated at 180 °C...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29793208/enhanced-phosphate-removal-from-wastewater-by-using-in-situ-generated-fresh-trivalent-fe-composition-through-the-interaction-of-fe-ii-on-caco-3
#2
Yujie Li, Xiaoman He, Huimin Hu, Tingting Zhang, Jun Qu, Qiwu Zhang
Excessive existences of nutrients such as phosphate in the aqueous environment remain as a heavy concern although many researches have been reported for dealing with their removal. Based on the understanding toward the interactions of Fe compounds with phosphate and carbonate from many available researches, we designed a very simple and efficient approach for phosphate removal by using in situ generated fresh trivalent Fe composition through the interaction of Fe(II) as FeSO4 on CaCO3 . Addition and agitation of Fe(II) and CaCO3 simultaneously to phosphate solution allowed an amorphous Fe(III)-P or Ca-Fe(III)-P precipitation, with a phosphate removal rate close to 100%, to reduce the residual phosphorus concentration less than 0...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29793207/infectivity-reduction-efficacy-of-uv-irradiation-and-peracetic-acid-uv-combined-treatment-on-ms2-bacteriophage-and-murine-norovirus-in-secondary-wastewater-effluent
#3
ShihChi Weng, Nathan Dunkin, Kellogg J Schwab, James McQuarrie, Kati Bell, Joseph G Jacangelo
Peracetic acid (PAA) is a strong oxidant/bactericide that has been applied in various industries (e.g., food processing, pharmaceuticals, medical device sterilization, etc.) as a disinfectant. There is increasing interest in using PAA for wastewater disinfection because it does not form halogenated byproducts, and no post-treatment quenching is required. Previous studies have demonstrated good efficiency in controlling bacteria in wastewater, but limited information is available for viruses, especially those hosted by mammals (e...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29793050/small-scale-managed-marine-areas-over-time-developments-and-challenges-in-a-local-fijian-reef-fishery
#4
Elodie Fache, Annette Breckwoldt
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 exemplify the social complexities of the implementation of this LMMA approach in a specific island setting. This perspective connects local stakeholders' establishment and management of a LMMA covering their entire customary fishing rights area (iqoliqoli) with the national context articulated around the Fiji Locally Managed Marine Area (FLMMA) network, as well as with regional networking and international conservation dynamics...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29787970/functional-polyaniline-multiwalled-carbon-nanotube-composite-as-an-efficient-adsorbent-material-for-removing-pharmaceuticals-from-aqueous-media
#5
Flávia Viana Avelar Dutra, Bruna Carneiro Pires, Tienne Aparecida Nascimento, Keyller Bastos Borges
The composite polyaniline/multiwalled carbon nanotube (PAni/MWCNT, 1:0.1 w/w) was developed with the intention of binding the adsorbent properties of two materials and using it to adsorb pharmaceuticals from aqueous media. PAni/MWCNT was characterized by scanning electron microscopy, thermogravimetry, infrared spectroscopy, pH at the point of zero charge, and the effect on the surface wettability of the material. As proof of concept, adsorption studies were carried out using meloxicam (MLX) as the pharmaceutical and it was evaluated as a function of pH, temperature, ionic strength, contact time and variation in concentration...
May 19, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29787969/efficacy-of-batch-mode-rotary-drum-composter-for-management-of-aquatic-weed-hydrilla-verticillata-l-f-royle
#6
Mayur Shirish Jain, Ajay S Kalamdhad
Invasive aquatic weed management is one of the biggest challenges in the field of solid waste management. Eichhornia crassipes, Pistia stratiotes and Hydrilla verticillata (L.f.) Royle pose some of the world's most noted aquatic weed problems. Previously reported studies on management of H. verticillata, a submersed aquatic plant, have shown that temporary removal, chemical treatment or biological control methods each have advantages and disadvantages. Removal programs that propose to compost harvested H. verticillata biomass may provide a novel technique to manage this issue...
May 19, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29787968/background-concentrations-and-quality-reference-values-for-some-potentially-toxic-elements-in-soils-of-s%C3%A3-o-paulo-state-brazil
#7
Thiago Assis Rodrigues Nogueira, Cassio Hamilton Abreu-Junior, Luís Reynaldo Ferracciú Alleoni, Zhenli He, Marcio Roberto Soares, Camila Dos Santos Vieira, Luís Gustavo Frediani Lessa, Gian Franco Capra
Quality reference values (QRV) for potentially toxic elements (PTE) in soils are established as a tool for prevention and monitoring of soil pollution. These values should be periodically revised in order to ensure soil safety for agricultural purposes. Brazil is market leader for several commodities; therefore, the safety of Brazilian soils is of worldwide strategic importance. The objective of this study was to determine the natural background concentrations and the QRV for As, Ba, Cd, Cr, Ni, Pb, Se, and Zn by investigating 30 representative pedotypes in the São Paulo State, one of the most important agro-industry economy at worldwide level...
May 19, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29783178/an-alternative-approach-for-nitrate-and-arsenic-removal-from-wastewater-via-a-nitrate-dependent-ferrous-oxidation-process
#8
Meilin Zhang, Yingfen Li, Xinxian Long, Yunxiao Chong, Guangwei Yu, Zihao He
Owing to the high efficiency of converting nitrate to nitrogen gas with ferrous iron as the electron donor, the process of nitrate-dependent ferrous oxidation (NDFeO) has been considered suitable to treat wastewater that contains nitrate but lacks organic matter. Meanwhile, arsenic immobilization often has been found during the NDFeO reaction. Thus, it was strongly expected that nitrate and arsenic could be removed simultaneously in co-contaminated wastewater through the NDFeO process. However, in the current work, arsenic was not removed during the NDFeO process when the pH was high (above 8), though the nitrate reduction rate was over 90%...
May 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29783177/evaluating-long-term-patterns-of-decreasing-groundwater-discharge-through-a-lake-bottom-permeable-reactive-barrier
#9
Timothy D McCobb, Martin A Briggs, Denis R LeBlanc, Frederick D Day-Lewis, Carole D Johnson
Identifying and quantifying groundwater exchange is critical when considering contaminant fate and transport at the groundwater/surface-water interface. In this paper, areally distributed temperature and point seepage measurements are used to efficiently assess spatial and temporal groundwater discharge patterns through a glacial-kettle lakebed area containing a zero-valent iron permeable reactive barrier (PRB). Concern was that the PRB was becoming less permeable with time owing to biogeochemical processes within the PRB...
May 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778959/accelerating-settling-rates-of-biosolids-lagoons-through-thermal-hydrolysis
#10
Michael Chae, Lin Xia, Chengyong Zhu, David C Bressler
Although the improved dewaterability and digestibility of primary biosolids subjected to thermal hydrolysis has been studied for decades, there are a surprisingly small number of studies exploring the use of this thermal treatment for digested biosolids that are typically left to settle in large settling lagoons. This is likely because of the high capital and operating costs associated with thermal hydrolysis, coupled with the limited applications and value of the resulting products. However, due to the anticipated increases in the amount of generated biosolids combined with issues surrounding potential environmental release and the limited availability of land for additional lagoons, other biosolids management strategies are being explored...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778958/building-on-common-ground-to-address-biodiversity-conflicts-and-foster-collaboration-in-environmental-management
#11
Lou Lecuyer, Rehema M White, Birgit Schmook, Sophie Calmé
Conservation biology faces critical challenges that require collaborative approaches, including novel strategies to support interactions among actors in biodiversity conflicts. The goals of this study were to investigate the concept of common ground across multiple issues and to explore its practical application for the support of environmental management. We conceptually defined common ground as the areas of relevance underlying the suite of issues expressed by people regarding environmental management in a particular context...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778957/how-can-we-value-an-environmental-asset-that-very-few-have-visited-or-heard-of-lessons-learned-from-applying-contingent-and-inferred-valuation-in-an-australian-wetlands-case-study
#12
Daniel Gregg, Sarah Ann Wheeler
To date, the majority of environmental assets studied in the economic valuation literature clearly have high amenity and recreational use values. However there are many cases where small, but nevertheless unique and important, ecosystems survive as islands amongst large areas of modified, productive, or urban, landscapes. Development encroaches on the landscape and as urban landscapes become more concentrated these types of conservation islands will become increasingly more important. Previous experience with economic valuation suggests that lower total values for smaller contributions to conservation are more liable to be swamped by survey and hypothetical bias measures...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778956/health-risk-assessment-of-heavy-metals-in-atmospheric-deposition-in-a-congested-city-environment-in-a-developing-country-kandy-city-sri-lanka
#13
Lakshika Weerasundara, D N Magana-Arachchi, Abdul M Ziyath, Ashantha Goonetilleke, Meththika Vithanage
This research study which was undertaken in a congested city environment in a developing country provides a robust approach for the assessment and management of human health risk associated with atmospheric heavy metals. The case study area was Kandy City, which is the second largest city in Sri Lanka and bears the characteristics of a typical city in the developing world such as the urban footprint, high population density and traffic congestion. Atmospheric deposition samples were collected on a weekly basis and analyzed for nine heavy metals common to urban environments, namely, Al, Cr, Mn, Fe, Ni, Cu, Zn, Cd and Pb...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778955/controlled-release-urea-reduced-nitrogen-leaching-and-improved-nitrogen-use-efficiency-and-yield-of-direct-seeded-rice
#14
Shugang Zhang, Tianlin Shen, Yuechao Yang, Yuncong C Li, Yongshan Wan, Min Zhang, Yafu Tang, Samuel C Allen
The use of controlled-release urea (CRU) has become one of best management practices for increasing crop yield and improving nitrogen (N) use efficiency (NUE). However, the effects of CRU on direct-seeded rice are not well understood while direct-seeding has gradually replaced transplanting due to increasing labor cost and lack of irrigation water. The objective of this two-year field experiment was to compare the effects of the CRU at four rates (120, 180, 240 and 360 kg N ha-1 , CRU1, CRU2, CRU3 and CRU4, respectively) with a conventional urea fertilizer (360 kg N ha-1 ; U) and a control (no N fertilizer applied; CK) on yield, biomass, NUE of direct-seeded rice and soil nutrients...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778954/ionizing-radiation-and-taxonomic-functional-and-evolutionary-diversity-of-bird-communities
#15
Federico Morelli, Yanina Benedetti, Timothy A Mousseau, Anders Pape Møller
Ionizing radiation from nuclear accidents at Chernobyl, Fukushima and elsewhere has reduced the abundance, species richness and diversity of ecosystems. Here we analyzed the taxonomic, functional and evolutionary diversity of bird communities in forested areas around Chernobyl. Species richness decreased with increasing radiation, mainly in 2007. Functional richness, but not functional evenness and divergence, decreased with increasing level of ionizing radiation. Evolutionary distinctiveness of bird communities was higher in areas with higher levels of ionizing radiation...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778953/multipath-fabrication-of-hierarchical-cual-layered-double-hydroxide-carbon-fiber-composites-for-the-degradation-of-ammonia-nitrogen
#16
Xiaoming Peng, Min Wang, Fengping Hu, Fengxian Qiu, Tao Zhang, Hongling Dai, Zan Cao
In this work, a series of flower-like CuAl layered double hydroxides (LDHs) and hierarchical CuAl/carbon fiber-LDH (CuAl/CF-LDH) materials were synthesized, and these materials were used as catalysts for the degradation of ammonia nitrogen from simulated wastewater. The morphologies and structures of the materials were characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy (RS), X-ray diffraction (XRD), and the Brunauer-Emmett-Teller (BET) technique...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29778952/-too-much-of-a-good-thing-the-role-of-advanced-eco-learning-and-contingency-factors-on-the-relationship-between-corporate-environmental-and-financial-performance
#17
Hengky Latan, Charbel Jose Chiappetta Jabbour, Ana Beatriz Lopes de Sousa Jabbour, Douglas William Scott Renwick, Samuel Fosso Wamba, Muhammad Shahbaz
Inspired by the natural-resource-based view (NRBV) theory, we attempt to shed light on a controversy which has been persistent over the last decade, concerning the relationship between corporate environmental performance (CEP) and corporate financial performance (CFP). Using the 'too-much-of-a-good-thing' (TMGT) concept, which suggests that "too much can be worse than too little," we link mixed results and consider the roles of advanced eco-learning and contingency factors in influencing the CEP-CFP relationship...
May 17, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29777998/an-integrated-modeling-approach-for-estimating-hydrologic-responses-to-future-urbanization-and-climate-changes-in-a-mixed-use-midwestern-watershed
#18
Michael G Sunde, Hong S He, Jason A Hubbart, Michael A Urban
Future urban development and climatic changes are likely to affect hydrologic regimes in many watersheds. Quantifying potential water regime changes caused by these stressors is therefore crucial for enabling decision makers to develop viable environmental management strategies. This study presents an approach that integrates mid-21st century impervious surface growth estimates derived from the Imperviousness Change Analysis Tool with downscaled climate model projections and a hydrologic model Soil and Water Assessment Tool to characterize potential water regime changes in a mixed-use watershed in central Missouri, USA...
May 16, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29777997/rumen-fluid-fermentation-for-enhancement-of-hydrolysis-and-acidification-of-grass-clipping
#19
Siqi Wang, Guangming Zhang, Panyue Zhang, Xiaowen Ma, Fan Li, Haibo Zhang, Xue Tao, Junpei Ye, Mohammad Nabi
Rumen fluid, formed in rumen of ruminants, includes a complex microbial population of bacteria, protozoa, fungi and archaea, and has high ability to degrade lignocellulosic biomass. In this study, rumen fluid was used to ferment grass clipping for enhancing the hydrolysis and acidification of organic matters. Results showed that strict anaerobic condition, higher grass clipping content and smaller particle size of grass clipping were beneficial to the hydrolysis and acidification of organics. The increase of SCOD and total VFA concentration respectively reached 24...
May 16, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29777995/environmental-governance-in-china-interactions-between-the-state-and-nonstate-actors
#20
Dan Guttman, Oran Young, Yijia Jing, Barbara Bramble, Maoliang Bu, Carmen Chen, Kathinka Furst, Tao Hu, Yifei Li, Kate Logan, Lingxuan Liu, Lydia Price, Michael Spencer, Sangwon Suh, Xiaopu Sun, Bowen Tan, Harold Wang, Xin Wang, Juan Zhang, Xinxin Zhang, Rodrigo Zeidan
In the West, limited government capacity to solve environmental problems has triggered the rise of a variety of "nonstate actors" to supplement government efforts or provide alternative mechanisms for addressing environmental issues. How does this development - along with our efforts to understand it - map onto environmental governance processes in China? China's efforts to address environmental issues reflect institutionalized governance processes that differ from parallel western processes in ways that have major consequences for domestic environmental governance practices and the governance of China "going abroad...
May 16, 2018: Journal of Environmental Management
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