The Arsenic Biogeochemical Cycle: A Review
Abstract
673 5313
The Arsenic Biogeochemical Cycle: A Reviewby
Salvadora Martínez López
,
Ascensión Banegas García
,
Carmen Pérez Sirvent
,
Maria José Martínez Sánchez
and
Maria Angeles Esteban Abad
Abstract
This paper reviews the arsenic in the environment. Arsenic contamination is currently one of the leading environmental problems worldwide. The arsenic (As) cycle is the subject of this article because As is an element with a significant impact on living beings and because of its interrelation with other biogeochemical cycles. The biogeochemical cycle of As is closed, so this trace element returns to sediments where it can be changed in its chemical state by micro-organisms present in soils. In addition, some minera [...] 673 5313 |
Transition to Circular Economy in Practice Through Network Governance in Conjunction with Public Governance; Comparative Longitudinal Action Research on Mattresses, Concrete, and Textile in The NetherlandsAbstract
This paper investigates the practical implementation of transitioning to a circular economy through network governance in conjunction with public governance. The research focuses on a comparative, longitudinal analysis of three Dutch product chains (mattresses, concrete, and textiles) from 2016 to the present. The study based on action research, utilizes documents, reports from all meetings, and personal observations. Drawing from the fields of public administration and transition management, the paper addresses tw [...] 446 3180 |
Impacts of Different Sources of Carbonates on Growth of Fusarium oxysporum f. sp. lycopersici in Different Growth MediaAbstract
Fusarium is the most common soil-borne pathogen that causes wilt in many plant crops, among which the tomato is one of the most susceptible crops. This experiment is conducted to analyse the impacts of inorganic carbon compounds i.e., calcium carbonate CaCO3, sodium carbonate Na2CO3 and potassium bicarbonate KHCO3 on the growth of Fusarium oxysporum f. sp. lycopersici (FOL) causing wilt in tomato plant in different culture media including Malt Extract Agar (MEA), Potato Dextrose Agar (PDA) and V8. Three concentrati [...] 531 3438 |
Preparation & Characterization of Polyvinyl Alcohol-Sodium Alginate-Starch Based Hydrogel by Gamma Radiation and Its Application for the Treatment of Dye Containing Waterby
Depok Chandra Shil
,
Nazia Rahman
,
Shahnaz Sultana
,
Md. Nabul Sardar
,
Puja Majumder
and
Fataha Nur Robel
Abstract
Hydrogels are three-dimensional, hydrophilic networks of polymers with a high water absorption capacity. We investigated the removal of monovalent cationic dye, methylene blue, from aqueous solutions by a polyvinyl alcohol/Sodium alginate/Starch mix hydrogel to discover a solution to the environmental waste-water problem. By applying a gamma radiation dose from a Co-60 source without adding a hazardous cross-linker, a novel PVA/SA/Starch mix hydrogel was synthesized. The effects of factors like irradiation dose and [...] 607 4320 |
Nexus Between Heat and Air Pollution in Urban Areas and the Role of Resilience Planning in Mitigating These Threatsby
Jim Anbazu
and
Nana Serwaa Antwi
Abstract
Urban heat island (UHI) effects are evident in many cities globally. Studies have revealed that UHI impacts air pollution and vice versa. However, it is observed that these two severe problems are addressed independently instead of interrelatedly. The study seeks to provide an in-depth understanding of the relationship between air pollution and heat and how they constantly shape urban areas for planning and future research purposes. A global shift from sustainable planning practices to building urban resilience ex [...] 607 5487 |
Recycling Spent Coffee Grounds on Permeable Interlocking Concrete Paving BlocksAbstract
Decomposition of spent coffee grounds (SCGs), a byproduct of brewing coffee, in disposed landfill sites releases significant amounts of potent greenhouse gases. This study aims to investigate the maximum recycling proportions of SCGs, a nonconventional filler material, for permeable interlocking concrete paving (PICP) blocks. These blocks have a porous structure that helps mitigate surface ponding while maintaining sound structural performance. Using Scanning Electron Microscope image analysis, the water absorbency [...] 568 4624 |
“Look, It’s a Dengue Mosquito”: A Qualitative Study on Living Near Open-Air Dumpsites and Vector-Borne Diseasesby
Tara Rava Zolnikov
,
Tanya Clark
,
Frances Furio
,
Sandul Yasobant
,
Ana Carolina Silva Martins
,
Vanessa Resende Nogueira Cruvinel
and
Marcos Takashi Obara
Abstract
Currently, almost half of the human population is at risk of acquiring dengue. Other emerging pathogens affecting human populations transmitted by Aedes (Stegomyia) aegypti are chikungunya and Zika viruses. People who live in poor areas are more susceptible to be infected by these diseases. The lack of selective garbage collection and inadequate water storage are important factors in the dynamics of vector-borne transmission. This study took place in Estrutural City, the poorest city in Brasilia, Brazil, which host [...] 643 5178 |
Calculation Method of the Carbon Footprint of Products of Animal Origin Integrated with the Physiological Absorption of Carbon Dioxide: Calculation Example of the CFP of Mozzarella di Bufala Campana DPOAbstract
The environmental impact of emissions appears to be increasingly important for food, particularly those of animal origin. The LCA (Life-Cycle Assessment) method, an internationally standardized method used to calculate the environmental impact of goods or services, in the carbon footprint, does not take into account the carbon set and consequently the subtraction of carbon dioxide by the plant biomass whether or not aimed at the production of food of animal origin. This methodology could overestimate the carbon dio [...] 482 82653 |
Carnauba Straw as Feedstock for Solid Biofuel Productionby
Deiby Bizerra
,
João Nunes
,
Chastryane Barros
,
Raul Paixão
,
Rosali Marques
,
Francisco Simão Neto
,
José Santos
,
Rafael Melo
,
Bruno Fernandes
and
Maria Rios
Abstract
Carnauba straw (Copernicia prunifera), residual biomass derived from wax extraction, was evaluated as a potential feedstock for bioenergy production. The characterization was carried out using elemental analysis, proximate analysis, Higher Heating Value (HHV), FTIR spectroscopy, SEM, and FRX. The carbonization, using a Muffle Furnace, was applied as a thermal conversion technique to improve the fixed carbon content, and preliminary densification was done to assess the potential for future production of briquettes. [...] 520 4087 |
Joint Biodiversity Management Committees: A Mechanism to Manage and Conserve Eco-RegionsAbstract
Sasthamkotta Lake eco-region is a freshwater Ramsar site in Kerala, India. Eco-regions are ecologically and geographically defined larger land or water mass areas with a characteristic assemblage of the ecosystem and significant biodiversity. A decentralized and locally self-sustaining mechanism has been achieved in managing this eco-region by a participatory model through a joint Biodiversity Management Committee (jBMC) constitution. BMCs are custodians of the environment, and biodiversity, confined to a village/P [...] 630 4319 |
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