A Novel Activated Carbon Enabled Steam Generation System Under Simulated Solar Light

2018 ◽  
Author(s):  
Ashreet Mishra ◽  
A. G. Agwu Nnanna
Keyword(s):  
Activated Carbon ◽  
Metallic Nanoparticles ◽  
Solar Light ◽  
Bulk Temperature ◽  
Steam Generation ◽  
Simulated Solar Light ◽  
Parametric Studies ◽  
Rate Of Evaporation ◽  
The Cost ◽  
First Time

A number of studies on CNT, Au and Ag solar enabled steam generation with potential application in water purification, distillation and sterilization of medical equipment. The key challenge with these nanoparticles is cost of production hence limiting its wide application for clean water production. This work for the first time, reports on activated carbon enabled steam generation hence addressing the cost limitations of metallic nanoparticles. Activated carbon has high solar absorptivity at various wavelengths of visible light under low concentration. Experiments were carried out using activated carbon and CNT nanofluids and polyurethane membrane with immobilized activated carbon and CNT. A simulated solar light of 1 KW ∼1 Sun was used. The rate of evaporation, temporal and spatial evolution of bulk temperature in the water were monitored automatically and recorded for further data reductions. Parametric studies of the effect of nanoparticle concentration, water quality and salinity were performed. Experimental evidence showed that activated carbon has potential. We reported for the first time that optimal activated carbon concentration for maximum steam generation is 60 % vol. We also obtained a 160 % increase in steam production rate at 60 % concentration of activated carbon when compared with D.I water.

A Novel Activated Carbon Enabled Steam Generation System Under Simulated Solar Light

2019 ◽  
Vol 141 (3) ◽  
Author(s):  
Ashreet Mishra ◽  
Agwu A. G. Nnanna
Keyword(s):  
Activated Carbon ◽  
Water Purification ◽  
Metallic Nanoparticles ◽  
Solar Light ◽  
Bulk Temperature ◽  
Steam Generation ◽  
Simulated Solar Light ◽  
Rate Of Evaporation ◽  
The Cost ◽  
First Time

Abstract Studies on carbon nanotubes (CNT), Au, and Ag solar enabled steam generation with potential application in water purification, distillation, and sterilization of medical equipment are ongoing. The key challenge with these nanoparticles is the cost of production hence limiting its full application for clean water production. This work for the first time reports on activated carbon enabled steam generation hence addressing the cost limitations of metallic nanoparticles. Activated carbon has high solar absorptivity at various wavelengths of visible light under low concentration. Experiments were carried out using activated carbon and CNT nanofluids and polyurethane (PU) membrane with immobilized activated carbon and CNT. A simulated solar light of 1 kW ∼1 sun was used. The rate of evaporation, temporal and spatial evolution of bulk temperature in the water were monitored automatically and recorded for further data reductions. Parametric studies of the effect of nanoparticle concentration, water quality, and salinity were performed. Experimental evidence showed that activated carbon has potential in water purification. We reported for the first time that optimal activated carbon concentration for maximum steam generation is 60 vol %. We also obtained a 160% increase in steam production rate at 60% concentration of activated carbon when compared with de-ionized water.

Simulated solar-light assisted photocatalytic ozonation of metoprolol over titania-coated magnetic activated carbon

2012 ◽  
Vol 111-112 ◽  
pp. 246-253 ◽  
Author(s):  
Ana Rey ◽  
Diego H. Quiñones ◽  
Pedro M. Álvarez ◽  
Fernando J. Beltrán ◽  
Pawel K. Plucinski
Keyword(s):  
Activated Carbon ◽  
Solar Light ◽  
Magnetic Activated Carbon ◽  
Simulated Solar Light ◽  
Photocatalytic Ozonation

scholarly journals Musa acuminata peel extract mediated eco-friendly synthesis of solar light-active ZnO nanosponge for enhanced dyeing wastewater degradation

2020 ◽  
Vol 167 ◽  
pp. 01003
Author(s):  
Jin-Chung Sin ◽  
Ka-Wey Ong ◽  
Sze-Mun Lam ◽  
Honghu Zeng
Keyword(s):  
Environmental Remediation ◽  
Musa Acuminata ◽  
Spherical Particles ◽  
Solar Light ◽  
Textile Dye ◽  
X Ray Diffraction ◽  
X Ray ◽  
Simulated Solar Light ◽  
First Time ◽  
Peel Extract

ZnO nanosponge was synthesized for the first time via a green method using Musa acuminata peel extract. The X-ray diffraction, Raman, energy dispersive X-ray and fourier-transform infrared analyses demonstrated that the synthesized sample was well crystallized and possessed hexagonal wurtzite pure ZnO. The field-emission scanning electron microscopy observation revealed that the ZnO nanosponge was assembled by aggregated spherical particles with sizes of 30-128 nm. Under simulated solar light irradiation, the ZnO nanosponge acted as an excellent photocatalyst for methylene blue and rhodamine B mixtures degradation compared to commercially available TiO2-P25. The enhanced photocatalytic activities of ZnO sample can be attributed to the high generation of hydroxyl radicals as a result of its unique sponge-like porous structure with large surface area. Furthermore, the ZnO nanosponge can be used effectively on the photodegradation of real textile dye wastewater. These characteristics showed that the biosynthesized ZnO nanosponge can be employed as a photocatalyst for environmental remediation.

Development of a Low Cost Self-Sustaining Water Distillation System Using Activated Carbon Nanofluids

2018 ◽  
Author(s):  
Ashreet Mishra ◽  
A. G. Agwu Nnanna
Keyword(s):  
Developing Countries ◽  
Activated Carbon ◽  
Low Cost ◽  
Pure Water ◽  
Clean Water ◽  
The Sun ◽  
Steam Generation ◽  
Water Distillation ◽  
Distillation System ◽  
Parametric Studies

There is an ever increasing need to provide clean and portable drinking water in developing countries because of the poor quality of water, which causes various water borne diseases killing millions of infants and elderly people every year. There have been a lot of recent developments in the field of solar enabled water distillation where pure water is being generated. But a majority of the system use some type of external energy source for the system to run on which might make it efficient but can cause dependence on energy sources. The power of the Sun can be effectively harnessed and used as heat and light source for efficient steam generation. One of the challenges is to develop a low cost system which can perform at par with the best and extravagant systems. This paper investigates the performance of the solar distillation system when activated carbon nanoparticles are used along with brine and other sources of impure water so as to obtain clean water. The activated carbon nanoparticle which are an efficient and cheap mode of water purification enhanced the productivity of the system by 190% when compared to saline water due to its steam generation properties. A solar simulator of 1KWm2 was used to simulate the sun. Various parameters like the variation of air flow on condensation rate, height of fluid on vapor production rate and the temperature variation of the system are evaluated. Parametric studies of the effect of water quality and salinity were performed. It was determined that the optimum output rate of distilled water was 240 grams (6000gday.m2) was determined by the system from the parametric studies and the system is feasible and cost effective to be used in real world application. All of these standout features make the system a low cost option which can tackle the clean water dilemma in developing countries.

Preparation of a novel nanocomposite NaLuF4:Gd,Yb,Tm@SiO2@Ag@TiO2 with high photocatalytic activity driven by simulated solar light

2016 ◽  
Vol 45 (4) ◽  
pp. 1467-1475 ◽  
Author(s):  
Dongguang Yin ◽  
Lu Zhang ◽  
Xianzhang Cao ◽  
Zhiwen Chen ◽  
Jingxiu Tang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
High Photocatalytic Activity ◽  
Solar Light ◽  
Simulated Solar Light ◽  
First Time

A novel nanocomposite photocatalyst NaLuF4:Gd,Yb,Tm@SiO2@Ag@TiO2 was developed for the first time.

An Evaluation of Provincial Macroeconomic Performance in Vietnam

2017 ◽  
pp. 34-47
Author(s):  
Hoi Le Quoc ◽  
Nam Pham Xuan ◽  
Tuan Nguyen Anh
Keyword(s):  
Development Strategy ◽  
Institutional Transformation ◽  
Economic Indicators ◽  
Macroeconomic Performance ◽  
Economic Development Strategy ◽  
Socio Economic Development ◽  
The Cost ◽  
Development Objectives ◽  
First Time

The study was targeted at developing a methodology for constructing a macroeconomic performance index at a provincial level for the first time in Vietnam based on 4 groups of measurements: (i) Economic indicators; (ii) oriented economic indicators; (iii) socio-economic indicators; and (iv) economic - social – institutional indicators. Applying the methodology to the 2011 - 2015 empirical data of all provinces in Vietnam, the research shows that the socio-economic development strategy implemented by those provinces did not provide balanced outcomes between growth and social objectives, sustainability and inclusiveness. Many provinces focused on economic growth at the cost of structural change, equality and institutional transformation. In contrast, many provinces were successful in improving equality but not growth. Those facts threaten the long-term development objectives of the provinces.

scholarly journals Autism Tsunami: the Impact of Rising Prevalence on the Societal Cost of Autism in the United States

2021 ◽  
Author(s):  
Mark Blaxill ◽  
Toby Rogers ◽  
Cynthia Nevison
Keyword(s):  
Forecast Model ◽  
The United States ◽  
Population Projections ◽  
Base Case ◽  
Prevention Strategies ◽  
Total Base ◽  
Cost Categories ◽  
The Cost ◽  
The Impact ◽  
First Time

AbstractThe cost of ASD in the U.S. is estimated using a forecast model that for the first time accounts for the true historical increase in ASD. Model inputs include ASD prevalence, census population projections, six cost categories, ten age brackets, inflation projections, and three future prevalence scenarios. Future ASD costs increase dramatically: total base-case costs of $223 (175–271) billion/year are estimated in 2020; $589 billion/year in 2030, $1.36 trillion/year in 2040, and $5.54 (4.29–6.78) trillion/year by 2060, with substantial potential savings through ASD prevention. Rising prevalence, the shift from child to adult-dominated costs, the transfer of costs from parents onto government, and the soaring total costs raise pressing policy questions and demand an urgent focus on prevention strategies.

scholarly journals A METHODOLOGY TO SUPPORT COMPANIES IN THE FIRST STEPS TOWARDS DE-MANUFACTURING

2021 ◽  
Vol 1 ◽  
pp. 131-140
Author(s):  
Federica Cappelletti ◽  
Marta Rossi ◽  
Michele Germani ◽  
Mohammad Shadman Hanif
Keyword(s):  
Environmental Impact ◽  
End Of Life ◽  
Design Stage ◽  
Life Strategies ◽  
Disassembly Sequence ◽  
The Status ◽  
The Cost ◽  
Technical Solutions ◽  
First Time ◽  
Complex Activities

AbstractDe-manufacturing and re-manufacturing are fundamental technical solutions to efficiently recover value from post-use products. Disassembly in one of the most complex activities in de-manufacturing because i) the more manual it is the higher is its cost, ii) disassembly times are variable due to uncertainty of conditions of products reaching their EoL, and iii) because it is necessary to know which components to disassemble to balance the cost of disassembly. The paper proposes a methodology that finds ways of applications: it can be applied at the design stage to detect space for product design improvements, and it also represents a baseline from organizations approaching de-manufacturing for the first time. The methodology consists of four main steps, in which firstly targets components are identified, according to their environmental impact; secondly their disassembly sequence is qualitatively evaluated, and successively it is quantitatively determined via disassembly times, predicting also the status of the component at their End of Life. The aim of the methodology is reached at the fourth phase when alternative, eco-friendlier End of Life strategies are proposed, verified, and chosen.

scholarly journals TiO2-carbon microspheres as photocatalysts for effective remediation of pharmaceuticals under simulated solar light

2021 ◽  
pp. 119169
Author(s):  
Manuel Peñas-Garzón ◽  
Wael H.M. Abdelraheem ◽  
Carolina Belver ◽  
Juan J. Rodriguez ◽  
Jorge Bedia ◽  
...  
Keyword(s):  
Solar Light ◽  
Carbon Microspheres ◽  
Simulated Solar Light
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