scholarly journals Novel Magnetic Nano Silica Synthesis Using Barley Husk Waste for Removing Petroleum from Polluted Water for Environmental Sustainability

2020 ◽  
Vol 12 (24) ◽  
pp. 10646
Author(s):  
Evidence Akhayere ◽  
Ashok Vaseashta ◽  
Doga Kavaz
Keyword(s):  
Environmental Sustainability ◽  
Agricultural Waste ◽  
Average Diameter ◽  
Acid Reflux ◽  
Silica Particles ◽  
Polluted Water ◽  
Nano Silica ◽  
Environmentally Sustainable ◽  
Barley Husk ◽  
Silica Synthesis

Water contamination by petroleum and its byproducts presents a major challenge worldwide. It is critical that sustainable treatment methods be employed for the removal of such contaminants from polluted water. For this investigation, magnetic nano silica (M-NS) was synthesized using agricultural waste from barley husk using a two-step process that is environmentally friendly and uses green chemistry synthesis. The barley husk waste was used as a precursor for the synthesis of nano-silica following a low energy and sustainable method of acid reflux and heat treatment. Nano-silica was then used for the synthesis of M-NS, with the addition of a magnetic solution of Fe3O4 nanoparticles. The magnetic nano-silica particles were characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR), Zeta potential analysis (ZETA) and X-Ray Diffraction (XRD). Magnetic nano-silica particles were observed to have an average diameter of 162 nm and appeared to be hydrophobic, with a large surface area of ~120 m2/gm. Due to these characteristics, magnetic nano-silica was used as an adsorbent for the removal of petrol contaminants from water. The experimental procedure showed that only 0.6 gm. of M-NS was used on 40 mg/L concentration of petroleum and the experiments recorded a high uptake efficiency of 85%. The sorption was shown to be an effective process since a high amount of petroleum was removed. The study further demonstrates that as the amount of sorbent is increased, the sorption capacity also increases until an equilibrium is reached. The results of this study establish that synthesis of M-NS, using environmentally sustainable processes, has the required characteristics to serve as sorbent for petroleum and its byproducts from contaminated water, thus enhancing environmental sustainability.

The Existence of Geothermal Energy in Communication Perspective and Sustainable Environment in Indonesia

2019 ◽  
Vol 4 (3) ◽  
pp. 43-52
Author(s):  
Indriyati Kamil ◽  
Oekan S Abdoellah ◽  
Herlina Agustin ◽  
Iriana Bakti
Keyword(s):  
Environmental Sustainability ◽  
Geothermal Energy ◽  
Nature Reserve ◽  
Nature Reserves ◽  
Communication Model ◽  
Conservation Areas ◽  
Conservation Area ◽  
Environmentally Sustainable ◽  
Communication Models ◽  
The Government

This article highlights the dynamics of geothermal energy in the Kamojang nature reserve in Indonesia. A nature reserve is a conservation area that must be protected and preserved, because it has unique flora and fauna, and rare ecosystems whose existence is threatened with extinction. After going through a long study process by an integrated team, the government finally made a policy to change the function of the nature reserve into a Nature Tourism Park. Changes in policy changes to the function of nature reserves cause pros and cons in the community, and cause conflicts between government and environmental activists. The purpose of this study is to identify the factors that cause changes in the function of nature reserves into natural tourism parks in the Kamojang conservation area of Indonesia, as well as to identify appropriate communication models in the management of geothermal energy through communication and environmentally sustainable approaches. Research findings show that the factors that cause changes in the function of nature reserves into tourist parks include; the interests of geothermal energy to meet national energy needs and electricity infrastructure, accommodate the needs of surrounding communities that utilize water resources in conservation areas, and restore ecosystems. The communication model for geothermal energy management that we propose at the same time is also a novelty namely; ecopopulism approach, negotiation approach, collaboration, and equating meaning and orientation to environmental sustainability. Type of Paper: Empirical Keywords: Geothermal Energy, Nature Reserves, Conservation Policies, Communication Models and Sustainable Development.

scholarly journals The Impact of Environmental Sustainability Labels on Willingness-to-Pay for Foods: A Systematic Review and Meta-Analysis of Discrete Choice Experiments

Nutrients ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 2677
Author(s):  
Anastasios Bastounis ◽  
John Buckell ◽  
Jamie Hartmann-Boyce ◽  
Brian Cook ◽  
Sarah King ◽  
...  
Keyword(s):  
Willingness To Pay ◽  
Discrete Choice ◽  
Environmental Sustainability ◽  
Purchasing Power Parity ◽  
Meta Analysis ◽  
Choice Experiments ◽  
Discrete Choice Experiments ◽  
Environmental Damage ◽  
Environmentally Sustainable ◽  
The Impact

Food production is a major contributor to environmental damage. More environmentally sustainable foods could incur higher costs for consumers. In this review, we explore whether consumers are willing to pay (WTP) more for foods with environmental sustainability labels (‘ecolabels’). Six electronic databases were searched for experiments on consumers’ willingness to pay for ecolabelled food. Monetary values were converted to Purchasing Power Parity dollars and adjusted for country-specific inflation. Studies were meta-analysed and effect sizes with confidence intervals were calculated for the whole sample and for pre-specified subgroups defined as meat-dairy, seafood, and fruits-vegetables-nuts. Meta-regressions tested the role of label attributes and demographic characteristics on participants’ WTP. Forty-three discrete choice experiments (DCEs) with 41,777 participants were eligible for inclusion. Thirty-five DCEs (n = 35,725) had usable data for the meta-analysis. Participants were willing to pay a premium of 3.79 PPP$/kg (95%CI 2.7, 4.89, p ≤ 0.001) for ecolabelled foods. WTP was higher for organic labels compared to other labels. Women and people with lower levels of education expressed higher WTP. Ecolabels may increase consumers’ willingness to pay more for environmentally sustainable products and could be part of a strategy to encourage a transition to more sustainable diets.

Preparation of high purity nano silica particles from blast-furnace slag

2010 ◽  
Vol 27 (6) ◽  
pp. 1901-1905 ◽  
Author(s):  
Sun-Jae Kim ◽  
Seong-Gyu Seo ◽  
Sang-Chul Jung
Keyword(s):  
Blast Furnace ◽  
High Purity ◽  
Blast Furnace Slag ◽  
Silica Particles ◽  
Nano Silica ◽  
Furnace Slag

Environmentally sustainable stochastic procurement model

2018 ◽  
Vol 29 (3) ◽  
pp. 472-498 ◽  
Author(s):  
Harpreet Kaur ◽  
Surya Prakash Singh
Keyword(s):  
Carbon Emissions ◽  
Environmental Sustainability ◽  
Lot Sizing ◽  
Planning Horizon ◽  
Business Environment ◽  
Manufacturing Firms ◽  
Mixed Integer ◽  
Content Type ◽  
Environmentally Sustainable ◽  
Procurement Planning

Purpose Procurement planning has always been a huge and challenging activity for business firms, especially in manufacturing. With government legislations about global concern over carbon emissions, the manufacturing firms are enforced to regulate and reduce the emissions caused throughout the supply chain. It is observed that procurement and logistics activities in manufacturing firms contribute heavily toward carbon emissions. Moreover, highly dynamic and uncertain business environment with uncertainty in parameters such as demand, supplier and carrier capacity adds to the complexity in procurement planning. The paper aims to discuss these issues. Design/methodology/approach This paper is a novel attempt to model environmentally sustainable stochastic procurement (ESSP) problem as a mixed-integer non-linear program. The ESSP optimizes the procurement plan of the firm including lot-sizing, supplier and carrier selection by addressing uncertainty and environmental sustainability. The model applies chance-constrained-based approach to address the uncertain parameters. Findings The proposed ESSP model is solved optimally for 30 data sets to validate the proposed ESSP and is further demonstrated using three illustrations solved optimally in LINGO 10. Originality/value The ESSP model simultaneously minimizes total procurement cost and carbon emissions over the entire planning horizon considering uncertain demand, supplier and carrier capacity.

scholarly journals Novel β-galactosidase nanobiocatalyst systems for application in the synthesis of bioactive galactosides

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 97216-97225 ◽  
Author(s):  
Katarina Banjanac ◽  
Milica Carević ◽  
Marija Ćorović ◽  
Ana Milivojević ◽  
Nevena Prlainović ◽  
...  
Keyword(s):  
Silica Particles ◽  
Nano Silica

Amino modified nonporous fumed nano-silica particles was used for the development of efficient nanobiocatalysts for application in the biosynthesis of bioactive galactosides, galacto-oligosaccharides (GOS).

scholarly journals Consumer Readiness to Reduce Meat Consumption for the Purpose of Environmental Sustainability: Insights from Norway

2018 ◽  
Vol 10 (9) ◽  
pp. 3058 ◽  
Author(s):  
Marthe Austgulen ◽  
Silje Skuland ◽  
Alexander Schjøll ◽  
Frode Alfnes
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Environmental Impacts ◽  
Food Consumption ◽  
Environmental Sustainability ◽  
Food Choices ◽  
Gas Emissions ◽  
Environmentally Sustainable ◽  
Consumption Practices ◽  
Group Interviews

Food production is associated with various environmental impacts and the production of meat is highlighted as a significant source of greenhouse gas emissions. A transition toward plant-based and low-meat diets has thus been emphasised as an important contribution to reducing climate change. By combining results from a consumer survey, focus group interviews and an in-store field experiment, this article investigates whether Norwegian consumers are ready to make food choices based on what is environmentally sustainable. We ask how consumers perceive the environmental impacts of food consumption, whether they are willing and able to change their food consumption in a more climate-friendly direction, and what influences their perceptions and positions. The results show that there is uncertainty among consumers regarding what constitutes climate- or environmentally friendly food choices and that few consumers are motivated to change their food consumption patterns for climate- or environmental reasons. Consumers’ support to initiatives, such as eating less meat and increasing the prices of meat, are partly determined by the consumers’ existing value orientation and their existing consumption practices. Finally, we find that although providing information about the climate benefits of eating less meat has an effect on vegetable purchases, this does not seem to mobilise consumer action any more than the provision of information about the health benefits of eating less meat does. The article concludes that environmental policies aiming to transfer part of the responsibility for reducing greenhouse gas emissions to food consumers is being challenged by the fact that most consumers are still not ready to make food choices based on what is best for the climate or environment.

Sign in / Sign up

Export Citation Format

Share Document