scholarly journals EKSPLORASI LIMBAH KACA PADA PROSES FINISHING GELASIR BODI KERAMIK

CORAK ◽  
2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Arif Suharson
Keyword(s):  
Global Warming ◽  
Key Words ◽  
Experimental Method ◽  
Industrial Waste ◽  
Global Market ◽  
Waste Glass ◽  
Comprehensive Treatment ◽  
Glass Waste ◽  
The Earth ◽  
Creativity And Innovation

Currently, industrial waste is an important issue since it is associated to global warming. Glass is used in such kinds of products as perfume and beverage bottles and lamps. Glass is preferred due to its advantage of transparency. However, glass also has disadvantage of fracture. More importantly, glass is non-biodegradable substance and therefore it contaminates the earth. Thus, besides plastic waste, glass waste is a serious issue and deserves comprehensive treatment to prevent natural sustainability. It takes one billion years to have the glass degradable naturally,The researcher is interested in researching glass waste. It is expected that the study will contribute to solve the problem of natural balance. Glass waste is an alternative for ceramic glazing. This study employs experimental method with scientifically accountable structured and recorded exploration of data through experiments of glass waste for effective and efficient glazing material. It is expected that this research will contribute to the development of science among traditional ceramic artisans and other ceramic producers to result in creative and innovative glass-based media of expression.It is also expected that this study will motivate the society to have better concern on glass waste as well as excite creativity and innovation resulting in new attractive design of glass-waste glazed ceramics with higher competitiveness in the global market. Key words: glass waste, glazing, ceramic

Global Warming and Its Multiple Causes

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Romdhane Ben Slama
Keyword(s):  
Global Warming ◽  
Greenhouse Gases ◽  
Greenhouse Effect ◽  
Infrared Radiation ◽  
Fossil Fuels ◽  
Ambient Air ◽  
The Earth ◽  
The One ◽  
Heat Released ◽  
Emission Of Greenhouse Gases

The global warming which preoccupies humanity, is still considered to be linked to a single cause which is the emission of greenhouse gases, CO2 in particular. In this article, we try to show that, on the one hand, the greenhouse effect (the radiative imprisonment to use the scientific term) took place in conjunction with the infrared radiation emitted by the earth. The surplus of CO2 due to the combustion of fossil fuels, but also the surplus of infrared emissions from artificialized soils contribute together or each separately,  to the imbalance of the natural greenhouse effect and the trend of global warming. In addition, another actor acting directly and instantaneously on the warming of the ambient air is the heat released by fossil fuels estimated at 17415.1010 kWh / year inducing a rise in temperature of 0.122 ° C, or 12.2 ° C / century.

PRODUKSI GULA MERAH DI RT 002 RW 002 DESA SLUMBUNG KECAMATAN NGADILUWIH KABUPATEN KEDIRI BERDASARKAN PERSPEKTIF ISLAM

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Elsa Karino
Keyword(s):  
Property Rights ◽  
Natural Resources ◽  
Production Process ◽  
Key Words ◽  
Transformation Process ◽  
Economic Potential ◽  
Capital Management ◽  
Islamic Perspective ◽  
The Earth ◽  
The Creation

Production is an activity to convert inputs into outputs through the transformation process. Input in the form of man, money, method, material, machine. While the output is in the form of goods or services. The purpose of production in general is to meet individual needs. There are several factors that influence production namely land and all economic potential that is processed and cannot be separated from the production process, labor is directly related to the demands of property rights through production, and capital, management and technology. In production there are various types of production, namely production which is intermittent and continuous. The production, if viewed from an Islamic perspective, it must fulfill the following principles. First, produce in a halal circle. Second, managing natural resources in production is interpreted as the process of creating wealth by utilizing natural resources must rely on the vision of the creation of this nature and along with the vision of human creation, namely as a blessing for all nature. Third, the Caliph on the earth is not only based on the activity of producing the usefulness of an item but work is done with the motive of benefiting to seek the pleasure of Allah SWT. Key Words: Production, Red Sugar, benefiting

Volcanic Glass as a Natural Analog for Borosilicate Waste Glass

1993 ◽  
Vol 333 ◽  
Author(s):  
Maury E. Morgenstein ◽  
Don L. Shettel
Keyword(s):  
Silica Glass ◽  
Glass Structure ◽  
Volcanic Glass ◽  
Waste Glass ◽  
Tensile Failure ◽  
Tensile Fracture ◽  
Failure Behavior ◽  
Basaltic Glass ◽  
Glass Waste ◽  
Natural Analog

ABSTRACTObsidian and basaltic glass are opposite end-members of natural volcanic glass compositions. Syngenetic and diagenetic tensile failure in basaltic glass (low silica glass) is pervasive and provides abundant alteration fronts deep into the glass structure. Perlitic fracturing in obsidian (high silica glass) limits the alteration zones to an “onion skin” geometry. Borosilicate waste glass behaves similarly to the natural analog of basaltic glass (sideromelane).During geologic time, established and tensile fracture networks form glass cells (a three-dimensional reticulated pattern) where the production of new fracture surfaces increases through time by geometric progression. This suggests that borosilicate glass monoliths will eventually become rubble. Rates of reaction appear to double for every 12C° of temperature increase. Published leach rates suggest that the entire inventory of certain radionuclides may be released during the 10,000 year regulatory time period. Steam alteration prior to liquid attack combined with pervasive deep tensile failure behavior may suggest that the glass waste form is not license defensible without a metallic- and/or ceramic-type composite barrier as an overpack.

Monitoring of Chemical Resistance of New Grouting Materials

2021 ◽  
Vol 898 ◽  
pp. 27-33
Author(s):  
Petr Figala ◽  
Rostislav Drochytka ◽  
Vit Černý ◽  
Radek Hermann ◽  
Jiří Kolísko
Keyword(s):  
Fly Ash ◽  
Chemical Resistance ◽  
Raw Materials ◽  
Waste Glass ◽  
Sulphate Solution ◽  
Sulphate Attack ◽  
Glass Waste ◽  
Foundry Sand ◽  
Waste Foundry Sand ◽  
Grouting Materials

This paper deals with the study of chemical resistance of new cement-based grout for invert grouting. The aim of this work is to verify new mixtures with specific admixtures. The study monitors resistance to external sulphate attack. Specimens were placed into sulphate solution 29.8 g∙l-1 (44 g∙l-1 Na2SO4) according to DIN19753 standard. Based on the results gained, new mixtures will be designed and optimized by addition of suitable secondary raw materials (fly ash, waste foundry sand, waste glass, waste filers).

scholarly journals Collateral transgression of planetary boundaries due to climate engineering by terrestrial carbon dioxide removal

2016 ◽  
Vol 7 (4) ◽  
pp. 783-796 ◽  
Author(s):  
Vera Heck ◽  
Jonathan F. Donges ◽  
Wolfgang Lucht
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Carbon Dioxide Removal ◽  
Small Range ◽  
Earth System ◽  
Planetary Boundaries ◽  
Climate Engineering ◽  
Terrestrial Carbon ◽  
The Earth ◽  
Atmospheric Carbon

Abstract. The planetary boundaries framework provides guidelines for defining thresholds in environmental variables. Their transgression is likely to result in a shift in Earth system functioning away from the relatively stable Holocene state. As the climate system is approaching critical thresholds of atmospheric carbon, several climate engineering methods are discussed, aiming at a reduction of atmospheric carbon concentrations to control the Earth's energy balance. Terrestrial carbon dioxide removal (tCDR) via afforestation or bioenergy production with carbon capture and storage are part of most climate change mitigation scenarios that limit global warming to less than 2 °C. We analyse the co-evolutionary interaction of societal interventions via tCDR and the natural dynamics of the Earth's carbon cycle. Applying a conceptual modelling framework, we analyse how the degree of anticipation of the climate problem and the intensity of tCDR efforts with the aim of staying within a "safe" level of global warming might influence the state of the Earth system with respect to other carbon-related planetary boundaries. Within the scope of our approach, we show that societal management of atmospheric carbon via tCDR can lead to a collateral transgression of the planetary boundary of land system change. Our analysis indicates that the opportunities to remain in a desirable region within carbon-related planetary boundaries only exist for a small range of anticipation levels and depend critically on the underlying emission pathway. While tCDR has the potential to ensure the Earth system's persistence within a carbon-safe operating space under low-emission pathways, it is unlikely to succeed in a business-as-usual scenario.

An Inverter can be Used in Hybrid Wind-Solar Grid-Connected Power System

2012 ◽  
Vol 512-515 ◽  
pp. 70-73 ◽  
Author(s):  
Yang Tian ◽  
Ru Cheng Han ◽  
Chen Li
Keyword(s):  
Global Warming ◽  
Power System ◽  
Sustainable Energy ◽  
Future Generations ◽  
Energy Sources ◽  
Grid Security ◽  
Operational Analysis ◽  
Harmonic Content ◽  
The Earth ◽  
Simulation Results

With increasing concern of global warming, many are looking at sustainable energy solutions to protect the earth for the future generations.. This paper presents a new inverter which can be used in hybrid wind/photovoltaic grid-connected power system. This inverter allows the two sources to work separately or simultaneously depending on the availability of the energy sources. Harmonic content is detrimental for the Grid security. The introduction of the inverter can effectively reduce the harmonics generated by the system. Operational analysis of the proposed system will be discussed in this paper. Simulation results are given to highlight the merits of the proposed inverter.

The United Nations Intergovernmental Panel on Climate Change and the Scientific “Consensus” on Global Warming

1996 ◽  
Vol 7 (4) ◽  
pp. 333-348 ◽  
Author(s):  
Patrick J. Michaels ◽  
Paul C. Knappenberger
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
United Nations ◽  
Point Of View ◽  
Sulfate Aerosols ◽  
Climate Data ◽  
Consensus Process ◽  
Intergovernmental Panel ◽  
The Earth ◽  
Extreme Scenario

Climate data support the “moderate” prediction of climate change (l-1.5°C) rather than the more extreme scenario (4°C or more). The moderate point of view was originally marginalized in the IPCC “consensus” process in both the 1990 First Assessment on Climate Change and in the 1992 Update prepared specifically for the Earth Summit and to provide backing for the Rio Framework Convention on Climate Change. It is now accepted, based on ground-based data, that the errors in those models are currently between 160% and 360%. If one compares them to the satellite data combined with the land record, the error rises to a maximum of 720%. In some recognition of this massive error, the 1995 IPCC “consensus” is that warming has been mitigated by sulfate aerosols. However, when that hypothesis is specifically tested, it fails. Further, data required to test the validity of the sulfate enhanced greenhouse models was withheld by the IPCC. despite repeated requests.

scholarly journals The use of Crushed Waste Glass as a Partial Replacement of Fine Aggregates in Asphalt Concrete Mixtures (Glassphalt)

2021 ◽  
pp. 1-10
Author(s):  
Gbadamosi Aderemi Tobi ◽  
Ogunsuyi Raphael Abidemi ◽  
Ojo Meshach Felix
Keyword(s):  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Waste Glass ◽  
Partial Replacement ◽  
Glass Waste ◽  
Coarse Aggregates ◽  
Rapid Economic Growth ◽  
Marshall Test ◽  
Bitumen Content ◽  
Asphalt Mix

With the rapid economic growth and continuously increased consumption, a large amount of glass waste materials is generated; this study investigated the effect of crushed waste glass as filler and also as an aggregate in the asphalt binder course. It compares the glassphalt mix with the specification range at different percentages to meet specifications limit according to Nigeria roads and bridges reverse book of 1997 Waste glass are cleaned and crushed from the glass bottles and added to the asphalt as a filler and as a replacement for coarse aggregates, the marshal method is used to determine the optimum bitumen content and evaluate the properties of the asphalt mix. However, 24 samples were prepared in total, 12 samples each for the asphalt mix used to determine the optimum bitumen content and the other 12 samples for the glassphalt mix used to find out the effect of adding the different percentages of crushed waste glass to the asphalt mixture. The Marshall test carried out on the asphalt mixtures showed that the optimum bitumen content of bitumen was found out to be 6.2% of the asphalt mix by weight. Also, Marshall Test carried out on the glassphalt mix showed the optimum percentage of glass used in the binder course of the weights of aggregates in the asphalt mix. The result of this experiment is been checked to be consistent with the Nigeria road and bridges reverse book of 1997, i.e. Marshall Stability, flow, bulk density, and air voids.

scholarly journals Alkali activated materials based on glass waste and slag for thermal and acoustic insulation

2019 ◽  
Vol 69 (335) ◽  
pp. 194 ◽  
Author(s):  
S. Stoleriu ◽  
I. N. Vlasceanu ◽  
C. Dima ◽  
A. I. Badanoiu ◽  
G. Voicu
Keyword(s):  
Thermal Treatment ◽  
Glass Powder ◽  
Waste Glass ◽  
Partial Substitution ◽  
Alkali Activation ◽  
High Porosity ◽  
Glass Waste ◽  
Activation Temperature ◽  
Waste Glass Powder ◽  
Alkali Activated

Porous alkali activated materials (AAM), can be obtained from waste glass powder and slag mixtures by alkali activation with NaOH solution. To obtain an adequate porous microstructure, the hardened AAM pastes were thermally treated at temperatures ranging between 900°C and 1000°C, for 60 or 30 minutes. Due to the intumescent behaviour specific for this type of materials, an important increase of the volume and porosity occurs during the thermal treatment. The partial substitution of waste glass powder with slag, determines the increase of compressive strength assessed before (up to 37 MPa) and after (around 10 MPa) thermal treatment; the increase of slag dosage also determines the increase of the activation temperature of the intumescent process (above 950°C). The high porosity and the specific microstructure (closed pores with various shapes and sizes) of these materials recommend them to be utilised as thermal and acoustical insulation materials.

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