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Journal of Environmental Management

Camila Abreu B Silva Rabelo, Laís Américo Soares, Isabel Kimiko Sakamoto, Edson Luiz Silva, Maria Bernadete Amâncio Varesche
The individual and mutual effects of substrate concentration (from 0.8 to 9.2 g/L) and pH (from 4.6 to 7.4) on hydrogen and volatile fatty acids production from sugarcane bagasse (SCB) were investigated in batch reactors, using a response surface methodology (RSM) and central composite design (CCD). The maximum of 23.10 mmoL H2 /L was obtained under optimized conditions of 7.0 g SCB/L and pH 7.2, at 37 °C through the acetic acid pathway (1.57 g/L). Butyric and succinic acids were the major volatile fatty acids (VFA) produced in the fermentation process (from 0...
July 11, 2018: Journal of Environmental Management
Mohd Danish Khan, Ji Whan Ahn, Gnu Nam
Continuous dumping of oyster shells in open fields has been a global issue, causing serious problems in the water and human health. The conversion of those wastes into value-added products is highly desirable. Here, Green Calcium Hydroxide Nano-plates (GCHNPs) were first synthesized from waste oyster shells by a chemical precipitation method in an aqueous medium at 90 °C without using any additives. The crystal structure with a hexagonal portlandite (Ca(OH)2 ) was observed by both X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR)...
July 11, 2018: Journal of Environmental Management
Maroua Haddad, Sami Abid, Moktar Hamdi, Hassib Bouallagui
Dye mass balance study at full-scale industrial textile wastewater (ITW) treatment plant showed that 1.5 ton of excess waste sludge, containing 304.5 Kg of dyes, are daily produced and discharged in landfills. Therefore, this by-product of activated sludge process (ASP) presents a serious environmental problem. In this work, a laboratory and pilot scale investigations were carried out to optimize aerobic biodegradation efficiency to reduce the amount of residual adsorbed dye that will be found in the waste sludge...
July 11, 2018: Journal of Environmental Management
Norio Tanaka, Hajime Sato, Yoshiya Igarashi, Yuya Kimiwada, Hiroyuki Torita
The effectiveness of coastal forests to mitigate a tsunami has received increased attention. However, many trees are broken, overturned, or washed out in large tsunami events like the 2011 Great East Japan tsunami (GEJT). For quantitatively estimating the advantages and disadvantages of a coastal forest, it is important to reproduce the forest breakage, especially paying attention to the production of driftwood and the trapping ability of standing trees. The objective of this study was to analyze the tree-breaking mode in detail, considering the stand structure of trees, to demonstrate an energy reduction even when trees are broken, and to utilize the information about the breaking pattern to design and manage a coastal forest properly...
July 10, 2018: Journal of Environmental Management
Jonathan Masih-Das, Wendong Tao
Process instability has been a challenge to anaerobic digestion of foodwaste at higher organic loading rates. Co-digestion is one of the measures to improve stability. This study conducted batch experiments to compare liquid dairy manure and dairy manure digestate as a co-substrate for anaerobic digestion of foodwaste. The batch co-digestion experiments showed a two-stage biogas production process, which could be simulated with a modification of the Gompertz model. The specific biogas yields derived with the two-stage biogas production model was further simulated against the co-substrate ratios with substrate limitation - inhibition models for identifying the optimal co-substrate ratio...
July 10, 2018: Journal of Environmental Management
Katherine Kral, Ryan Limb, Amy Ganguli, Torre Hovick, Kevin Sedivec
Global biodiversity is threatened by invasive plant species. Without a thorough understanding of effective management strategies, minimizing their impacts while improving native species diversity will be challenging. Burning in fire-prone landscapes has been successful for managing invasive species and increasing native biodiversity, but it is unclear how specific fire regimes improve restoration practices in novel ecosystems where invasive plants have a similar growth phenology to native plants. We investigated fire as a restoration practice in the Northern Great Plains to decrease the cover of Kentucky bluegrass Poa pratensis (bluegrass), a perennial cool-season invasive grass phenologically similar to dominant native cool-season grasses, by 1) evaluating season of burn (early-growing season, late-growing season, and dormant season) in a field experiment to test differences in plant community composition and 2) manipulating fine fuels (3000-5000 kg ha-1 ) in an experimental approach to determine the effects of fire on plant survivability of selected native grasses and bluegrass...
July 9, 2018: Journal of Environmental Management
Linda Strande, Lars Schoebitz, Fabian Bischoff, Daniel Ddiba, Francis Okello, Miriam Englund, Barbara J Ward, Charles B Niwagaba
Sanitation access in urban areas of low-income countries is provided through unstandardized onsite technologies containing accumulated faecal sludge. The demand for infrastructure to manage faecal sludge is increasing, however, no reliable method exists to estimate total accumulated quantities and qualities (Q&Q) This proposed approach averages out complexities to estimate conditions at a centralized to semi-centralized scale required for management and treatment technology solutions, as opposed to previous approaches evaluating what happens in individual containments...
July 9, 2018: Journal of Environmental Management
Marie Pagès, Anke Fischer, René van der Wal, Xavier Lambin
Volunteers are increasingly involved in the delivery of nature conservation policies, usually supported by a twofold rationale: volunteering can (a) enhance citizen participation in environmental governance and (b) ensure a workforce is in place to support conservation work in times of budget shortages. Here, we ask how these two rationales correspond to volunteers' own motivations to engage in a specific nature conservation activity, namely the control of invasive alien species (IAS). We use qualitative interviews with professional project managers, local group leaders, and volunteers to examine the interactions between policies aiming to rationalise the management of IAS and the motivations for and goals of volunteer engagement...
July 9, 2018: Journal of Environmental Management
Yee Van Fan, Jiří Jaromír Klemeš, Chew Tin Lee, Simon Perry
Anaerobic digestion (AD) serves as a promising alternative for waste treatment and a potential solution to improve the energy supply security. The feasibility of AD has been proven in some of the technologically and agriculturally advanced countries. However, development is still needed for worldwide implementation, especially for AD process dealing with municipal solid waste (MSW). This paper reviews various approaches and stages in the AD of MSW, which used to optimise the biogas production and quality. The assessed stages include pre-treatment, digestion process, post-treatment as well as the waste collection and transportation...
July 8, 2018: Journal of Environmental Management
Zacharias Frontistis, Dionissios Mantzavinos, Sureyya Meriç
In this work, the electrochemical oxidation of antibiotic ampicillin (AMP) on a boron-doped diamond anode in the presence of sodium persulfate (SPS) was investigated (EO/SPS process). Experiments were conducted at AMP concentrations between 0.8 and 3 mg/L, SPS concentrations between 100 and 500 mg/L, current densities between 5 and 110 mA/cm2 , in three water matrices (ultrapure water, bottled water and secondary treated wastewater), using 0.1 M Na2 SO4 as the supporting electrolyte. AMP degradation follows a pseudo-first order kinetic expression with the apparent rate constant increasing with (i) increasing SPS concentration (from 0...
July 7, 2018: Journal of Environmental Management
Pricila Iranah, Pankaj Lal, Bernabas T Wolde, Pralhad Burli
Small island developing states share as common constraints their small size, geographical dispersion, greater vulnerability to rapid and drastic environmental change, and limited administrative and technical resources. Within these, they have to cater for urban and agricultural areas, as well as enough natural landscape for ecosystem services. Funding for conservation of forest ecosystems on these islands has received relatively less attention and national park systems are chronically underfunded. We used Mauritius as a case study to investigate the willingness to pay for conservation of state and privately owned forests...
July 6, 2018: Journal of Environmental Management
Ekemena O Oseghe, Augustine E Ofomaja
Pine cone derived carbon was doped into TiO2 via a facile microwave procedure at different powers, different from other conventional synthesis methods. The materials were adequately characterized and applied in the photodegradation of 5 mg/L tetracycline hydrochloride (TA) under visible-LED light. The XRD results showed that all materials exist as both anatase and rutile phase. However, both the microwave power and the carbon content of the composite material inhibited the conversion of anatase into rutile...
July 5, 2018: Journal of Environmental Management
Van Khanh Nguyen, Myung-Gyu Ha, Seunghye Shin, Minhyeong Seo, Jongwon Jang, Seungjin Jo, Donghyeon Kim, Sungmin Lee, Yoonho Jung, Pyeongjeong Kang, Chajeong Shin, Yeonghee Ahn
Mine wastes from tungsten mine which contain a high concentration of arsenic (As) may expose many environmental problems because As is very toxic. This study aimed to evaluate bioleaching efficiency of As and manganese (Mn) from tungsten mine wastes using the pure and mixed culture of Acidithiobacillus ferrooxidans and A. thiooxidans. The electrochemical effect of the electrode through externally applied voltage on bacterial growth and bioleaching efficiency was also clarified. The obtained results indicated that both the highest As extraction efficiency (96...
July 5, 2018: Journal of Environmental Management
M Vadiati, J Adamowski, A Beynaghi
No abstract text is available yet for this article.
July 5, 2018: Journal of Environmental Management
Shengguo Xu, Chunli Chu, Yinan Zhang, Di Ye, Yiran Wang, Meiting Ju
Sustainable consumption and production are considered to be fundamental ways to solve problems with environmental resources that human beings are facing. There is a broad consensus that promoting sustainable consumption requires the joint efforts of different social actors. This paper aims to define the roles of different stakeholders and the relationships between them, and then establish a modeling framework to analyze those relationships between stakeholders, which include members of government, business, consumer, mass media, environmental non-government organizations, education and research institutions, financial markets, etc...
July 5, 2018: Journal of Environmental Management
Francesca Valenti, Simona M C Porto, Roberta Selvaggi, Biagio Pecorino
The suitability of the co-digestion of feedstock-mixtures (by-products and agricultural residues) depends on their ability to produce biogas. In this study, the effects of mixing five feedstocks (citrus pulp, olive pomace, poultry manure, Italian sainfoin silage and opuntia fresh cladodes) on anaerobic digestion for biogas production have been investigated by carrying out biomethane potential (BMP) tests on six different mixing ratios of the selected five biomasses. The BMP test results demonstrated that all the six studied feedstock-mixtures could be potentially used for renewable energy generation by biogas plants...
July 5, 2018: Journal of Environmental Management
Vijayalakshmi Gosu, Archana Dhakar, Prerana Sikarwar, U K Arun Kumar, V Subbaramaiah, Tian C Zhang
The present article reports the treatment of resorcinol using a catalytic wet peroxidation (CWPO) process in the presence of copper impregnated granular activated carbon (Cu/GAC) with a bench-scale batch reactor. The typical physico-chemical properties of synthesized catalyst were characterized with different equipment and methods. 90% resorcinol removal and 81% of TOC removal was achieved at optimum conditions (pH = 6, the stoichiometric ratio of H2 O2 /resorcinol = 1.2, catalyst dose = 0.5 g/L, initial concentration of resorcinol = 100 mg/L, temperature = 70 °C and time t = 4 h)...
July 5, 2018: Journal of Environmental Management
Irene Pluchinotta, Alessandro Pagano, Raffaele Giordano, Alexis Tsoukiàs
Water management is a controversial environmental policy issue, due to the heterogeneity of interests associated with a shared resource and the increasing level of conflict among water uses and users. Nowadays, there is a cumulative interest in enhancing multi-stakeholder decision-making processes, overtaking binding mercantile business, in water management domain. This requires the development of dynamic decision-aiding tools able to integrate the different problem frames held by the decision makers, to clarify the differences, to support the creation of collaborative decision-making processes and to provide shared platforms of interactions...
July 5, 2018: Journal of Environmental Management
Fouzi Harrou, Abdelkader Dairi, Ying Sun, Mohamed Senouci
The efficient operation of wastewater treatment plants (WWTPs) is key to ensuring a sustainable and friendly green environment. Monitoring wastewater processes is helpful not only for evaluating the process operating conditions but also for inspecting product quality. This paper presents a flexible and efficient fault detection approach based on unsupervised deep learning to monitor the operating conditions of WWTPs. Specifically, this approach integrates a deep belief networks (DBN) model and a one-class support vector machine (OCSVM) to separate normal from abnormal features by simultaneously taking advantage of the feature-extraction capability of DBNs and the superior predicting capacity of OCSVM...
July 5, 2018: Journal of Environmental Management
Ravichandran Rathna, Sunita Varjani, Ekambaram Nakkeeran
Rapid urbanization and industrialization of anthropogenic activities have exerted immense pressure on the environment. Polyhalogenated organic compounds, especially dioxins and furans are regarded as ubiquitously persistent environmental pollutants in the ecosystem. The recalcitrant nature of dioxins and furans induce toxicity in both humans and wildlife. Dioxins and furans are generated by defective technological chemical processes that occur during the manufacture of herbicides and pesticides, use of fertilizers, bleaching of paper and wood pulp and incomplete combustion process...
July 5, 2018: Journal of Environmental Management
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