scholarly journals A Novel and Efficient Metal Oxide Fluoride Absorbent for Drinking Water Safety and Sustainable Development

2021 ◽  
Vol 13 (2) ◽  
pp. 883
Author(s):  
Changjuan Dong ◽  
Xiaomei Wu ◽  
Zhanyi Gao ◽  
Peiling Yang ◽  
Mohd Yawar Ali Khan
Keyword(s):  
Sustainable Development ◽  
Drinking Water ◽  
Metal Oxide ◽  
Environmental Sustainability ◽  
Environmentally Friendly ◽  
Langmuir Model ◽  
Maximum Adsorption Capacity ◽  
Low Carbon ◽  
Water Safety ◽  
Solution Ph

Inefficient and non-environmentally friendly absorbent production can lead to much resource waste and go against low carbon and sustainable development. A novel and efficient Mg-Fe-Ce (MFC) complex metal oxide absorbent of fluoride ion (F−) removal was proposed for safe, environmentally friendly, and sustainable drinking water management. A series of optimization and preparation processes for the adsorbent and batch experiments (e.g., effects of solution pH, adsorption kinetics, adsorption isotherms, effects of coexisting anions, as well as surface properties tests) were carried out to analyze the characteristics of the adsorbent. The results indicated that optimum removal of F− occurred in a pH range of 4–5.5, and higher adsorption performances also happened under neutral pH conditions. The kinetic data under 10 and 50 mg·g−1 were found to be suitable for the pseudo-second-order adsorption rate model, and the two-site Langmuir model was ideal for adsorption isotherm data as compared to the one-site Langmuir model. According to the two-site Langmuir model, the maximum adsorption capacity calculated at pH 7.0 ± 0.2 was 204 mg·g−1. The adsorption of F− was not affected by the presence of sulfate (SO42−), nitrate (NO3−), and chloride (Cl−), which was suitable for practical applications in drinking water with high F− concentration. The MFC adsorbent has an amorphous structure, and there was an exchange reaction between OH− and F−. The novel MFC adsorbent was proven to have higher efficiency, better economy, and environmental sustainability, and be more environmentally friendly.

scholarly journals Aligning Climate Change and Sustainable Development Goals With an Innovation Systems Roadmap for Renewable Power

2020 ◽  
Vol 1 ◽  
Author(s):  
Rebecca R. Hernandez ◽  
Sarah M. Jordaan ◽  
Ben Kaldunski ◽  
Naresh Kumar
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
Renewable Energy ◽  
Environmental Sustainability ◽  
Sustainable Development Goals ◽  
Innovation Systems ◽  
Low Carbon ◽  
Environmental Consequences ◽  
Research Themes ◽  
Development Goals

Energy development improves quality of life for humans, but also incurs environmental consequences. A global energy transition from fossil fuels to renewable energy may mitigate climate change but may also undermine the capacity to achieve some or all 17 Sustainable Development Goals (SDGs). In this study, we use an innovation systems approach to construct a comprehensive roadmap for solar and wind energy to anticipate and improve impacts of a transition to a low carbon future in a manner ensuring climate goals and SDGs are mutually reinforcing. Our multidisciplinary approach began with an assessment of public investments in renewable energy followed by a 2-day research prioritization workshop. Fifty-eight expert workshop participants identified six research themes that proactively address the environmental sustainability of renewable energy. Next, we identified linkages between the six research themes and all 17 SDGs. Finally, we conducted a scientiometric analysis to analyze the research maturity of these themes. The results of these efforts elucidated the limits of existing knowledge of renewable energy-SDG interactions, informing the development of a research, development, demonstration, and deployment (RD3) roadmap to a renewable energy future aligned with both climate goals and SDGs. The RD3 roadmap has been designed to systematically develop solutions for diverse actors and organizations. Overall, our findings confer a broad vision for a sustainable transition to renewables to minimize unintended environmental consequences while supporting interoperability among actors particularly poised to influence its magnitude and direction.

scholarly journals Mudanças Climáticas no Semiárido Brasileiro: Experiências e Oportunidades para o Desenvolvimento (Climate Change in the Brazilian semiarid: Experiences and Opportunities for Development)

2015 ◽  
Vol 8 ◽  
pp. 484 ◽  
Author(s):  
Francislene Angelotti ◽  
Diana Signor ◽  
Vanderlise Giongo
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
Environmental Sustainability ◽  
Social Inclusion ◽  
Green Economy ◽  
Environmental Services ◽  
Low Carbon ◽  
Adaptation Measures ◽  
Mitigation And Adaptation ◽  
Brazilian Semiarid

A comunidade científica, ao longo dos últimos anos, tem buscado soluções para o desenvolvimento sustentável do Semiárido. Os estudos dos impactos das mudanças climáticas subsidiam medidas de mitigação e adaptação frente às futuras alterações no clima. Adicionalmente, o desenvolvimento e adoção de processos e tecnologias voltados para o desenvolvimento sustentável, tendo em vista a viabilidade econômica, social e ambiental são fundamentais, para aumentar a segurança alimentar, gerenciar os recursos hídricos e erradicar a pobreza. O avanço do conhecimento obtido nos últimos anos e a interação entre as instituições de ensino e pesquisa assumem um papel importante na proposição e adoção de políticas públicas que visam aumentar a capacidade adaptativa da sociedade e da economia regional frente às mudanças climáticas, criando espaços de oportunidades e caminhos para a resiliência climática. Nesse sentido, a busca de soluções e oportunidades para o desenvolvimento do Semiárido brasileiro é estratégico, razão pela qual mantem-se um fórum de discussão permanente traduzido no Simpósio de Mudanças Climáticas e Desertificação no Semiárido Brasileiro, realizado bianualmente. A adoção de ações voltadas para o desenvolvimento sustentável é estratégica. A economia verde e o pagamento por serviços ambientais se tornaram oportunidades, pois atualmente o desenvolvimento econômico não pode estar dissociado das preocupações com relação às mudanças no clima e a preservação do ambiente. Para o Semiárido brasileiro é necessário fortalecer as ações em andamento e buscar soluções inovadoras para reduzir os impactos e riscos inerentes às mudanças climáticas, criar oportunidades na economia de baixo carbono e promover a inclusão social. The scientific community over the last few years has been sought solutions for sustainable development of the semiarid. The research about impacts of climate change is subsidizing mitigation and adaptation measures facing future changes, in semi-arid region. In addition, the development and adoption of processes and technologies for sustainable development, in view of economic, social and environmental sustainability are essential to increasing food security, manage water resources and eradicate poverty. The knowledge progress achieved in recent years and the interaction between education and research institutions play an important role on proposition and adopting public policies that aimed to increase the adaptive capacity of society and the regional economy to climate change, creating opportunities spaces and directions for climate resilience. In this sense, the search for solutions and opportunities for the development of the Brazilian semiarid is strategic, which is why keeping a permanent discussion forum translated at the Symposium on Climate Change and Desertification in the Brazilian semiarid carried out every two years. The adoption of actions for sustainable development, in view of economic, social and environmental viability is strategic. The green economy and payment for environmental services have become opportunities because currently the economic development cannot be dissociated from concerns about climate change. For the Brazilian semiarid is necessary to strengthen actions in progress and seek innovative solutions to reduce the impacts and risks posed by climate change, creating opportunities in the low carbon economy and promoting social inclusion. Key-words: adaptation, mitigation, environmental services, research.   

scholarly journals Integration of ecolabelling and ecotourism schemes: Case study of forest honey in Indonesia

2020 ◽  
Vol 211 ◽  
pp. 01010
Author(s):  
Andre Notohamijoyo ◽  
Agil Abdul Hakim ◽  
Mustaidz Billah ◽  
Adhi Setya Wiyata
Keyword(s):  
Sustainable Development ◽  
Environmental Sustainability ◽  
Public Awareness ◽  
Environmentally Friendly ◽  
Environmental Conservation ◽  
Forest Area ◽  
Forest Communities ◽  
The Government

The growing level of public awareness of environmental sustainability increases understanding of environmentally friendly schemes such as ecolabeling. The community began to be moved to be involved in environmental conservation activities including the implementation of the ecolabel scheme. Likewise with Indonesia. Communities in several areas have been motivated to apply the selfdeclared forest honey ecolabel scheme. This encourages the preservation of nature around the forest area where the ecolabel scheme is implemented. However, there are still problems in implementing the ecolabel scheme, namely the welfare of the community. This requires more work from the Government. One of the things that the Government can more easily encourage to help improve the welfare of forest communities is by facilitating areas that implement an ecolabel scheme to become ecotourism destinations. In the post-Covid-19 virus pandemic like today, ecotourism is urgently needed and it is safer and more comfortable for tourists. This study reviews the model of integrating ecolabel schemes with ecotourism which will create a balance between environmental sustainability and community welfare. The research is based on a literacy study along with comparation with other countries. This is a tangible form of sustainable development.

scholarly journals Re-Questioning Green Architecture in Egypt: A Need, a Movement or a Style?

2019 ◽  
Vol 2 (3) ◽  
pp. 12
Author(s):  
Karim Kesseiba
Keyword(s):  
Sustainable Development ◽  
Literature Review ◽  
Environmental Sustainability ◽  
Environmentally Friendly ◽  
The Other ◽  
Sustainable Architecture ◽  
Green Is ◽  
Green Architecture ◽  
The Difference ◽  
Egyptian Architecture

Green architecture is considered the contemporary architectural paradigm. Amid threats of the lack of non-renewable energy, the calls for environmental sustainability and sustainable development, being ‘green’ is becoming an aspiration as well as a threat for many architects. Architects to a wide extent are required to adopt one sort of being ‘green’ in their contemporary additions to the built environment. However, very limited differentiations are subjected to the difference between ‘sustainable architecture’, ‘environmentally-friendly architecture’, and ‘green architecture’. This is one side of the debate; however, the most important side is, whether this new trend in contemporary Egyptian architecture is a need, a movement, or merely a style. The other important query is whether ‘sustainable architecture’ is becoming a commodity to fulfill international claims regardless of how it is implemented. In order to answer those questions, the paper first presents the differences between notions of ‘green architecture’, ‘sustainable architecture’ and ‘environmentally-friendly architecture’ and based on literature review as well as observations from international precedents. Afterwards, those three notions are explored and analyzed in the Egyptian context to understand where precisely the claimed sustainable or environmentally friendly buildings in Egypt stand in relation to the outcomes of the literature review. Finally, the need for following those notions in Egypt are re-questioned, in order to explore whether the claims for sustainability are becoming a commodity, especially in the shadows of the misuse of previously discussed slogans.

scholarly journals The Dynamic Evolution of the Ecological Footprint and Ecological Capacity of Qinghai Province

2020 ◽  
Vol 12 (7) ◽  
pp. 3065 ◽  
Author(s):  
Jing Guo ◽  
Jun Ren ◽  
Xiaotao Huang ◽  
Guifang He ◽  
Yan Shi ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Environmental Sustainability ◽  
Ecological Footprint ◽  
Industrial Structure ◽  
Ecological Engineering ◽  
Eastern Region ◽  
Low Carbon ◽  
Gis Technology ◽  
Qinghai Province ◽  
Per Capita

Based on the ecological footprint (EF) model, the dynamic changes in the per capita EF and per capita ecological carrying capacity (EC) in Qinghai Province from 2007 to 2017 were quantitatively analysed. The grey GM(1,1) prediction model was used to predict the per capita EF, per capita EC, and EF of ten thousand yuan of GDP. Additionally, the spatial change characteristics of the sustainable development status of the study area in four time periods were analysed using GIS technology. The results showed the following. (1) In the 11-year study period, Qinghai Province’s EF per capita grew gradually, increasing from 2.3027 hm2 in 2007 to 2.9837 hm2 in 2017. (2) The EC per capita in Qinghai Province remained a slight linear upward trend. (3) The environmental sustainability in Qinghai Province deteriorated over time. (4) According to the spatial characteristics, the overall sustainable development state changed markedly in the eastern region but was stable in the central and western regions. This paper proposes some countermeasures and suggestions to help Qinghai Province work towards sustainable development, such as controlling the population, adjusting the industrial structure, developing a low-carbon circular economy, and implementing ecological engineering.

scholarly journals PERBANDINGAN DAYA SERAP SERBUK GERGAJI KAYU DAMAR LAUT (SHOREA SP) DAN MERBAU (INTSIA SP) TERHADAP LOGAM Pb(II)

2018 ◽  
Vol 1 (1) ◽  
pp. 56-63
Author(s):  
Ibnu Khaldun ◽  
Aristia Aristia ◽  
Faucut Sarah
Keyword(s):  
Contact Time ◽  
Langmuir Model ◽  
Operating Conditions ◽  
Maximum Adsorption Capacity ◽  
Adsorption Model ◽  
Solution Ph ◽  
Langmuir Adsorption ◽  
Freundlich Isotherms ◽  
Langmuir Adsorption Model ◽  
Equilibrium Data

Abstrak. Penelitian ini bertujuan untuk  menginvestigasi kemampuan daya serap serbuk gergaji kayu damar laut (Shorea sp) dan merbau (Intsia sp) terhadap logam Pb(II) dari larutan, dan mempelajari pengaruh kondisi percobaan seperti pH larutan, waktu kontak, jumlah adsorben dan konsentrasi adsorbat. Efisiensi adsorpsi maksimum  berturut-turut sebanyak 95,72% pada pH 4 dan 98,78% pada pH 5 oleh damar laut (Shorea sp) dan   kayu merbau (Intsia sp). Adsorpsi timbal oleh kedua adsorben meningkat dengan bertambahnya waktu dan pH (dari 1 hingga 5) dan menurun dengan menurunnya kekuatan ion. Data kesetimbangan dikorelasikan dengan isotherm Langmuir dan Freundlich. Kapasitas adsorpsi maksimum berdasarkan isotherm Langmuir untuk serbuk kayu damar laut dan kayu merbau berturut-turut sebesar 45,45 mg/g dan 14,706 mg/g dan berdasarkan isotherm Freundlich sebesar untuk serbuk kayu damar laut dan kayu merbau berturut-turut sebesar 1,2475 mg/g dan 1,616 mg/g. Dari hasil tersebut disimpulkan bahwa model Langmuir adalah yang terbaik.Kata kunci: Adsorpsi, damar laut, merbau, isotherm, serbuk gergaji. Abstract. The aim of this work is to investigate the performance of damar laut (Shorea sp) and  merbau (Intsia sp) sawdust  for the adsorption of  lead(II) from aqueous solutions, and to study the influence of the operating conditions such as solution pH, contact time, amount of adsorbent, and concentration of adsorbate.  The maximum adsorpsi efficiencies were 95.72% for damar laut (Shorea sp) at pH 4 and  98.78% for  kayu merbau (Intsia sp) at pH 5.  The adsorption  of lead by both sorbents increased with an increase in contact time and pH (from 1 to 5) and decreased with an increase in ionic strength. The equilibrium data has been correlated with both Langmuir and Freundlich isotherms.  The maximum adsorption capacity of the sawdust evaluated by Langmuir adsorption model  by damar laut (Shorea sp) and  merbau (Intsia sp) sawdust was 45.45 mg/g and 14.706 mg/g respectively and by Freundlich adsorption model by damar laut (Shorea sp) and  merbau (Intsia sp) sawdust was 1.2473 mg/g and 1.616 mg/g respectively. The results indicate that the Langmuir model fits the data better.Keywords: adsorption, Shorea sp, Intsia sp, Isotherms, Sawdust. 

scholarly journals Facile Synthesis of Cross-linked Hyperbranched Polyamidoamines Dendrimers for Efficient Hg(Ⅱ) Removal From Water

2021 ◽  
Vol 9 ◽  
Author(s):  
Xue Geng ◽  
Rongjun Qu ◽  
Xiangyu Kong ◽  
Shengnan Geng ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Metal Ion ◽  
Large Scale ◽  
Chemical Properties ◽  
Diglycidyl Ether ◽  
Langmuir Model ◽  
Maximum Adsorption Capacity ◽  
Solution Ph ◽  
Pseudo Second Order ◽  
Physical And Chemical

Dendrimers as commonly used metal ions adsorption materials have the advantages of good adsorption performance and high reuse rate, but the high cost limits its extensive use. Compared with dendrimers, hyperbranched dendrimers have similar physical and chemical properties and are more economical. Therefore, hyperbranched dendrimers are more suitable for industrial large-scale adsorption. The hyperbranched polyamidoamine (HPAMAM) gels were prepared by cross-linking hyperbranched polyamidoamine (HPAMAM-ECH-x and HPAMAM-EGDE-x) with different amounts of epichlorohydrin (ECH) and ethylene glycol diglycidyl ether (EGDE), respectively. The as-synthesized adsorbents were characterized by FT-IR, SEM and XPS. The prepared adsorbents were used to adsorb Hg(Ⅱ) in aqueous solution, and the effects of solution pH, contact time, temperature and initial concentration of metal ion on the adsorption capacity were investigated. The effect of solution pH indicated that the optimum condition to Hg(Ⅱ) removing was at pH 5.0. The adsorption kinetic curves of the two kinds of materials were in accordance with the pseudo-second-order model. For the HPAMAM-ECH samples, the adsorption thermodynamic curves fitted the Langmuir model, while for the HPAMAM-EGDE samples, both Langmuir and Freundlich equations fitted well. The maximum adsorption capacity of HPAMAM-ECH-3 obtained from Langmuir model toward Hg(Ⅱ) was 3.36 mmol/g at pH 5.0 and 35°C.

scholarly journals Re-Questioning Green Architecture in Egypt: A Need, a Movement or a Style?

2019 ◽  
Vol 2 (3) ◽  
pp. 12
Author(s):  
Karim Kesseiba
Keyword(s):  
Sustainable Development ◽  
Literature Review ◽  
Environmental Sustainability ◽  
Environmentally Friendly ◽  
The Other ◽  
Sustainable Architecture ◽  
Green Is ◽  
Green Architecture ◽  
The Difference ◽  
Egyptian Architecture

Green architecture is considered the contemporary architectural paradigm. Amid threats of the lack of non-renewable energy, the calls for environmental sustainability and sustainable development, being ‘green’ is becoming an aspiration as well as a threat for many architects. Architects to a wide extent are required to adopt one sort of being ‘green’ in their contemporary additions to the built environment. However, very limited differentiations are subjected to the difference between ‘sustainable architecture’, ‘environmentally-friendly architecture’, and ‘green architecture’. This is one side of the debate; however, the most important side is, whether this new trend in contemporary Egyptian architecture is a need, a movement, or merely a style. The other important query is whether ‘sustainable architecture’ is becoming a commodity to fulfill international claims regardless of how it is implemented. In order to answer those questions, the paper first presents the differences between notions of ‘green architecture’, ‘sustainable architecture’ and ‘environmentally-friendly architecture’ and based on literature review as well as observations from international precedents. Afterwards, those three notions are explored and analyzed in the Egyptian context to understand where precisely the claimed sustainable or environmentally friendly buildings in Egypt stand in relation to the outcomes of the literature review. Finally, the need for following those notions in Egypt are re-questioned, in order to explore whether the claims for sustainability are becoming a commodity, especially in the shadows of the misuse of previously discussed slogans.

Assessing China's Digital Economy and Environmental Sustainability: A Regional Low-Carbon Perspective

2020 ◽  
Author(s):  
Xiuting Piao ◽  
Xuefeng Cui
Keyword(s):  
Sustainable Development ◽  
Energy Consumption ◽  
Carbon Emissions ◽  
Environmental Sustainability ◽  
Economic Transformation ◽  
Digital Economy ◽  
Eastern Region ◽  
Low Carbon ◽  
Relative Contribution ◽  
The Impact

<p>Digital economy is becoming a new engine of China's economic transformation, leading a new path of green and low-carbon development. However, the positive and negative effects of the digital economy on the environment have also been widely debated. The energy consumption of China's digital economy industry is still increasing, but it has received little attention. This paper studies the emerging links between digital economy and low-carbon sustainable development. Understanding the impact of the digital economy on carbon emissions is critical to addressing the challenges of climate change in the digital age.</p><p>By integrating input-output methods, this paper establishes a comprehensive framework to evaluate China's digital economy and environmental sustainable development. It can not only evaluate the carbon emissions in various sub-industries of the digital economy, but also reveal its formation and change mechanism by determining its source industries, transfer paths and economic drivers. Using STIRPAT model and provincial panel data from 2001 to 2016, this paper investigates the impact of the digital economy industry on carbon emissions at the national and regional levels. In addition, assess the carbon footprint of the entire digital industry, including the relative contribution of major infrastructure, core and integration components of the digital economy to carbon emissions. The results show that the digital economy helps reduce China's carbon emissions. The digital economy in the central region has a greater impact on carbon emissions than the eastern region, while the western region has unconspicuous impact. With the emergence of the digital economy in the energy system, energy consumption can be reduced and energy efficiency can be improved, which can help reduce carbon emissions in the energy sector, and contribute to the sector's carbon emission reduction goal of about 3%. The positive and negative impacts of the digital economy on the environment have resulted in an inverted U-shaped relationship between the digital economy and carbon emissions. The inflection point of the digital economy is slightly higher than the medium level, which means that carbon emissions may increase further with the development of the digital economy at this stage. Without control, the relative contribution of the digital economy to carbon emissions may exceed 10% by 2030. These findings not only help to advance the existing literature, but also deserve special attention from policy makers.</p>

Keeping drinking water safe: Adopting water safety plans in rural Nepal

Waterlines ◽  
2011 ◽  
Vol 30 (3) ◽  
pp. 212-222 ◽  
Author(s):  
Nam Raj Khatri ◽  
Han Heijnen
Keyword(s):  
Drinking Water ◽  
Water Safety ◽  
Water Safety Plans ◽  
Rural Nepal
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