Groundwater available in aquifers is one of the most important renewable natural resources. It supplies drinking water for more than 90% of the rural population. Most of the wastes from households and industries are dumped in open dumping yards. Due to this, groundwater gets polluted and quality gets deteriorated. The polluted groundwater in many areas is unfit for domestic and drinking purposes. In order to overcome this problem, many treatment methods are adopted in different parts of the world. In the present work, we have assessed the groundwater characteristics in a part of industrial city in southern India and treated the polluted groundwater by using natural bio-coagulants. We have used eco-friendly bio-coagulants such as Artocarpusheterophyllus (Jackfruit peel), Momordicacharantia (Bitter gourd seed), Musa paradisiaca (Banana flower leaf) and Cynodondactylon (Scutch grass). These coagulants are effective in removing the turbidity and maintaining the pH of the water. In addition, these natural coagulants reduce BOD, COD and salt content. After treatment, the groundwater can be used for domestic purposes. As it is a cost- effective and eco-friendly method it can be afforded by large population.
The primary goal of this research is to evaluate the treatment of dairy effluent from a Coimbatore industry sector utilising algae bioreactor techniques. The activated sludge process is a biological wastewater treatment process for treating industrial wastewater for reducing solid particles and simultaneously treating dairy wastewater under aerobic conditions. In this present study, an aeration tank is designed and fabricated for the treatment of wastewater and sludge production by inoculating green algae. The algae bioreactor is operated continuously for 30 days by supplying oxygen. The wastewater characteristics are tested for their concentration to find the removal efficiency of the aerobic tank. This study attempts to reduce the pollutant concentration and CO2 emission from wastewater as well as produce fertilisers from this treatment. This method of treatment is sustainable and eco-friendly.
Groundwater in aquifers is one of the most significant renewable natural resources. It provides drinking water to more than 90% of the rural population. The majority of domestic and industrial garbage is disposed off in open dumping yards. As a result, groundwater becomes contaminated and of poor quality. Many therapy strategies are being used in various regions of the world to address this issue. We investigated the groundwater properties in a section of an industrial city in southern India and treated the contaminated groundwater using natural bio-coagulants in this study. Artocarpus heterophyllus (Jackfruit peel), Momordica charantia (Bitter gourd seed), Musa paradisiaca (Banana blossom leaf), and Cynodon dactylon were employed as eco-friendly bio-coagulants (Scutch grass). These coagulants are good at removing turbidity while also keeping the pH of the water stable. Furthermore, these natural coagulants lower BOD, COD, and salt levels. Groundwater can be utilised for home purposes after treatment. Because it is a low-cost and environmentally friendly approach, a vast population can afford it.
In this study, baking soda extraction from textile dye bath effluent has been investigated. The novel notion of employing amino acid additions to improve the standard Solvay method and thereby boost the efficiency of Na+ recovery has been investigated. Glycine, L-arginine, and L-alanine are three amino acid additions examined for their effect on enhancing Na+ recovery, and the best-suited additive is chosen. The dumping of brackish dye bath effluent, which has a high percentage of sodium chloride, causes textile dye baths from the textile industry. The primary goal was to remove Na+ (sodium) from the effluent using carbon dioxide gas, which has environmental benefits. Carbon dioxide (CO2) is the most common greenhouse gas, trapping heat and raising global temperatures, therefore contributing to climate change. The Solvay process is used to transform Na+ in salty wastewater into a valuable product. The effect of different operating variables such as NH4OH (ammonium hydroxide) concentration, reaction temperature, carbonation time, and carbon dioxide gas flow rate on bicarbonate production was investigated. Maximum sodium recovery of about 68 percent is attained under optimal circumstances. When compared with the regular Solvay process, the modified Solvay method has a greater recovery efficiency (33 percent). Amino acid addition (arginine) improved conversion efficiency while also lowering the process’s ammonia need.
Despite significant advancements in this area, techniques for collecting commercialised CO2 relying on absorption processes still have significant limits. The main barriers to CO2 capture include high capital costs, lower absorption, and desorption rates, evaporation of solvents and usage of corrosive solvents. Ionic liquids (ILs) and CO2 capture have received a lot of interest recently. Different amines are currently used as solvents, however, ILs are a viable option due to their unique features, such as their affinity to collect CO2 molecules and their minimal vapour pressure. Since greenhouse gas emissions, particularly those of carbon dioxide have a significant impact on global warming, and this subject is generating increased public concern. The carbon capture, use, and sequestration technique appears to be effective in lowering carbon dioxide concentrations in the atmosphere. An overview of previous engineering and research work on many topics, previous engineering and research work on many topics, CO2 capture techniques is provided in this study.
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