Green Chemistry Technology - Science topic
Green Chemistry Technology is a pollution prevention through the design of effective chemical products that have low or no toxicity and use of chemical processes that reduce or eliminate the use and generation of hazardous substances.
Questions related to Green Chemistry Technology
What are the currently created eco-innovations and implemented green technologies for the utilization of used photovoltaic panels?
One of the important factors limiting the development of solar energy may be the still existing lack of eco-innovations and green technologies for the utilization of used photovoltaic panels, implemented on an industrial scale. In many countries, many new photovoltaic panels are currently being installed on buildings. The current energy crisis may additionally accelerate the development of renewable and zero-emission energy sources. However, for a few, a dozen or a max. Several dozen years, millions, and globally billions of photovoltaic panels will be dismantled due to wear and tear and should be disposed of, not landfilled. This is an important issue taking into account the potential contamination of the natural environment with toxic substances contained in photovoltaic panels.
In view of the above, I would like to address the following question to the Distinguished Community of Researchers and Scientists:
What are the currently created eco-innovations and implemented green technologies for the utilization of used photovoltaic panels?
What innovative technologies for utilization of photovoltaic panels are currently working on by scientists and researchers in laboratories, which can become new eco-innovations and green technologies and can be implemented on an industrial scale?
What new eco-innovations and green technologies can solve the problem of recycling used photovoltaic panels in the future?
I invite everyone to the discussion,
Thank you very much,
I would like to make activated carbon from charcoal so I need some information about making process, chemicals and instruments, if you have any suggestion please give me.
As we know one of the main ingredients in paint industry as a pigment is Titanium dioxide. However it costs too much. Considering these two facts in our mind, I want to know, how it is possible to diminish the usage of TiO2 in this industry?
In Homoleptic iridium based complex synthesis. in second step of reaction the glycerol used as solvent. after the reaction the reaction mixture added to water. at extraction time the glycerol is completely not extracted. and not forming a solid. is there any way to remove glycerol and get solid.
I want to know, if I prepared polymer-supported photocatalyst, Amberlite resin or Dowex resin would be better (This would be according to the chemical structure, pore size, surface area or the used substrate)?
I want to couple furfuryl alcohol and Succinic anhydride. They often use DMAP as catalyst, but I'm searching for an alternative.
How to calculate the area needed to proceed a determined amount of MSW? Or reversely, let say the area of gasification plant is given (because it's limited), can we determine how much MSW as feedstock that can be proceeded?
I synthesized Au2O/ZnO nanocomposites.The goal of reseach is to synthesis of Au/ZnO.What is minimum temperture that causes pyrolysis of O and calcination of ZnO in the same time?
I have produced activated carbon with chemical activation using zncl2 as a activating agent. After the carbonization process i reflux my sample with 3 M HCl for 1 h to remove the zncl2. I do the filtration and collect the green liquid. i want to reuse the chemical activation agent but the question is how can i do it?
Substitution of free formaldehyde with substances capable of
releasing formaldehyde in-situ is possible
• Melamine resins
BUT: necessity of either catalysts or higher temperatures to
decompose those substances in order to release formaldehyde?
Is there any substances to replace formaldehyde?
The attainment of sustainability requires adherence to some important aspects like human welfare, natural resource management, economic development, food and energy security and environmental sustainability. How Green Chemistry can address these concerns for a sustainable future of the planet Earth.
I need information on microbially assisted chemical reactions causing alkaline pH. bacterial urea hydrolysis is one such reaction which produces alkaline pH. Are there any other similar reactions which will produce alkaline pH?
In many Indian states, the water contaminated with naturally occurring fluoride is a big problem. In recent years, non-thermal plasma technology has been popular to purify the drinking water. Is there possibility to remove the halide anions from the water using plasma technology? or Can we combine the plasma technology and nano-technology to solve the such problems?
In the past month, my biochar and KOH experiments have stopped working. The KOH doesn't look to have reacted with the char in any way.
It worked for the first few runs I did but has now suddenly stopped working.
I have tried changing the temperature, the concentration, the atmosphere, impregnation method to work out what is different.
Why wouldn't KOH react with carbon?
Hello , I would like to ask for your help please. I do my research on the synthesis of mesoporous materials and their application with the adsorption of pollutants (pesticides) but after several experiments carried out in the laboratory on this subject, I found that mesoporous materials do not adsorb pesticides The more polar ones such as methomyl and cymoxanil for example while all my work is based on this, someone can propose me a grouping or a precursor which can be useful for the functionalization of the mesoporous materials of the MSU family with to these Chemical ances, please it is urgent, thank you in advance. my greetings
I am seeking to remove CO from a natural gas stream using adsorbents and I was wondering if hopcalite might be an effective option? Does anyone have any familiarity with this?
Dear Research Partners, How are you all so far? I have some questions for you please: Can a coffee husk based activated carbon be used for de colorization or de-pigmentation of herbal extracts in liquid form?....Is the process of preparing activated carbon from coffee husk an expensive process? Is there any paper or patent you know on the preparation of activated carbon from coffee husk for the same de pigmentation purpose? Hoping to hear from you ... Thanks very much
There are activated carbons available commercially for water filtration and other purification purposes. Is there any activated carbon material commercially available for gas purification/separation like for separation of methane and carbon dioxide?
I am looking for a commercially viable, environmentally friendly (If that is possible) way to free both Fe2O3 and TiO2 from its bonds in Red Mud. HCI or thermal anything considered. What would you recommend? Also treat before magnetic separation or after?
I want to remove lipids from the DCM extract of soil and plant samples for the analysis of PAHs. For this I can not use Conc. sulfuric acid as these compounds are sensitive to possible sulfonation.
Is Activated charcoal can be a good adsorbent for Chromium effluent.
Will it be an effective option in terms of both cost and efficiency
Rice husk silica is being recently used in rubber product as a filler but it is not able to give properties which can be obtained by using standard silica like vn3 and hydrated one. Kindly inform me which properties of rice husk silica make it lags from vn3
I need your help to enlighten me on the need for an inert atmosphere at the carbonization step for preparation of carbon from organic waste.
I thank you in advance.
(the base in the liquor is unstable it varies a lot),this affects the cooking process in digesters (vessel) as the wood-chip loading needs to be reduced when the base is low .
The granules so prepared are to be used in columns for remediation of contaminated water. The binder should not affect porosity and surface area of the granulated material. I have tried sodium alginate which did not work.
Hello, I'm currently working on a research project of corrosion inhibitors using cigarette butts. From the studies I've seen on the subject, it requires a high concentration of inhibitor for it to be efficient. For example, results show that the inhibition efficiencies arrive at 94.6% and 91.7% in 10% and 15% (wt%) HCl solution, respectively, by adding 5% (wt%) inhibitor.
Would this mean that since more than 1,000ppm concentration is needed, the inhibitor is not efficient? Is it really necesary for the inhibitor to be in normal 200-5,000ppm standards? Are there any industries that use such high concentrations of inhibitors? Would there be a way to combine the inhibitor with another substance to make it more efficient with less concentration?
I attach the file of the research (not my research) for citing purposes.
We have a technology for producing Chlorine Dioxide Solution using Hydrogen Peroxide as reducing agent. But we produce an effluent stream of about 3.4 m3/ton of ClO2. It contains about 440 pl Sulphuric Acid (H2SO4), 340 gpl Sodium Sulphate (Na2SO4) and 1.8 gpl Sodium Chlorate (NaClO3).
We require a suitable process for handling this effluent and making the process “Zero Liquid Discharge”.
Kindly check and help us in developing that process.
We have an idea of neutralizing this effluent with Lime Solution. But we are not sure about the extent of reaction of Sodium Sulphate (Na2SO4) with Lime Solution.
The quantity of effluent generated is 1.1 m3/hr (for a plant size of 7.5 TPD).
If you want email me anything related to it or helpful for the same..
iI'm working on a project to reduce the hauling of the FOGS for our company. Is there a way for me to "purify" the oil from that waste source?
Please, use this link to view the opportunity to join our research group and feel free to contact me for additional details.
We all are familiar that ionic liquids (ILs) posses relatively lower vapor pressure and several other fascinating properties that make them "green and sustainable chemicals and solvents" for variety of chemical transformations. I want to know that whether the synthesis of these compounds (Ionic Liquids) is also cost effective or not relative to synthesis of normal heterocyclic compounds ?? Please
utility of carbon nitride polymeric composites for mitigation of toxic and hazardous water pollutants either in blend or any other form of applications of carbon nitride polymers
Critical Review Metal-free photocatalysts for various applications in energy conversion and environmental purification Green Chem., 2017, Advance Article DOI: 10.1039/C6GC02856J
Which of Organic pollutant could not adsorb by Activated carbon? Most of them adsorb completely by Activated Carbon for example I know that phenols and dyes could be adsorb efficiently.
I am writing my PhD proposal on biomass utilization into useful products,through the use of nano catalyst that lower the energy conversion need for the reduction process.please any good suggestion and research idea that will help in achieving this goal is welcome.
Hello everyone, we have synthesized some ionic liquids having chloride ions we want to replace the chloride ion with borohydride ion. We want to know is there any suitable method for that?
I want to to know that how can i increase polystyrene MFI in a single reactor with self initiated bulk polymerization process and what kind of mineral is use for gpps polymerization?
In addition to the pyridine FT-IR method are there any other methods that can be applied to measure the Nature of different acid sites such as the Bronsted and Lewis acid sites of a catalyst?
right now I am doing some research about indoor purifiers and I was wondering if there is any approach to purify co2 or convert it to harmless gases like oxygen. I found out that co2 is an important factor considered as a pollutant, however, I cannot find a purifier for that Is there any purifier or filter to reduce the concentration or remove co2 for indoor use?
Thanks in advance.
Template characteristics affects molecularly imprinted polymer characteristics if careful selection of reaction components is not done.
I recorded N2 adsorption/desorption isotherm at 25 C and 0 C. For some samples i get negative isotherm. Can someone help me to sort out?
i would like to synthesis Ti-pillared bentonite but in the green ways, then impregnated with Cu metal oxides. is it possible to make pillaring solution in oxalic acid medium?
Solubility measurements in Ionic Liquids as reported in most of the literature is usually done using Gravimetric method using micro balance" and "Isochoric method based on pressure". Is it possible to measure gas solubility using simple laboratory equipment or designing an alternate method for the same purpose ?
I saw some papers they use N2 to prepare the activated carbon and the other thy use the N2 then they switched it to CO2 but they did not explain about it.
I want to know the mechanism of CO2 during activation ?
I have prepared the aqueous plant extract and mixed it with PdCl2 dissolved in little amount of HCl in 1:1 ratio. On heating, I have found some precipitate formation and colour change to dark brownish black. Why Is there a precipitate formation? Is it going to effect my further experiment or is the ppt. Palladium Nanoparticle itself? Please help me
I would like to synthesis Fe-based catalyst by coprecipitation. K and Mo may be added to the solution but I don´t know what oxides I´m going to obtain.
In the precipation reaction an aqueous solution of NaOH are added dropwise up to reach pH 8, the solution is aged for 1 hour and the temperature of the whole process is 70ºC.
Almost FeNO3 is converted into Fe2O3 but I´m not sure about what happens with KNO3. The K phase is important to calculate the metal atomic ratio of the final catalyst.
How can we relate the light source to the product yield? I found a few papers that briefly explains that UVC light emits higher power that visible light, thus product yield will decrease with increase in light wavelength. Is there any better and detailed explanation on this?
I performed a green bromination of trans-stilbene:
[See image in link for reaction]
Br2 is generated in situ via the oxidation of HBr acid with H2O2.
The major product should be meso-stilbene dibromide with perhaps a very small amount of dl-stilbene dibromide.
However, I added 2.4 mL of HBr instead of 1.2 mL with the correct amount of H2O2 (0.80 mL).
[link to lab procedure-- second link]
The product I produced was not colorless and instead a very light beige/tan color. It's melting point is about 210 °C.
What I'm trying to figure out is what happened to the product from the addition of too much HBr--specifically what happened to the double bond in the stilbene?
Can anyone help?
I'm interested in knowing / I want to know the mechanism behind the activation process either physical or chemical or physio-chemical activation of bio materials during preparation of activated carbon at high temperature.
What exactly happen with Bio-materials during activation, so that it gives high surface textural properties ( surface area, pore volume, etc..) after activation and thermal treatment.
In many paper, people are talking about Iodine number of activated carbon. What really Iodine number is? what is the significance of iodine number? how to find it?
When i mix the prepared activated carbon with the water to wash it, it never settles down, it always floating at the top so i could not remove the ashes completely from the prepared activated carbon. How this problem can be solved?
I want to steam activate my activated carbon. We have electric tube furnace with 1 inlet. How it is possible with that?
I am looking to purchase activated carbon beads (carbon beads that have been activated by temperature or steam; not chemicals) and I was wondering about the best UK suppliers. Has anybody got any good recommendations? Failing UK suppliers, are there any other companies that may be able to help me?
The beads I am looking to use cannot leach any Phosphorus into the water effluent; this is a very important requirement.
In my studies, three types of activated carbons showed different adsorption preference toward different initial concentration. The first one shows high adsorption capacity compared the third one when mercury (II) concentration below 40 mg/L, while this changes reversely when mercury (II) initial concentration higher than this value. All experiments were conduced in the same circumstances except the initial concentration of absorbate. The IEP and pHpzc studies indicate the first type of activated carbon possesses higher amount of total acidic functional groups corresponding to lower IEP value, the third type of activated carbon have higher amout of acidic groups in the exterior surface of activated carbon with lower pHpzc value.