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24 articles for “Chemical oxygen demand (COD)”
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Reduction of Chemical Oxygen Demand of Industrial Reverse Osmosis (RO) Reject Water by Hydrogen Peroxide Treatment
Abstract: Reverse osmosis (RO) technology is now applied in many industrial water treatment processes for producing low saline water which are required for demineralized water production for boiler operation of thermal power generation plant, metallurgy and many others. The RO reject water having high salinity are mostly rich in sodium, potassium, calcium, magnesium, and other metal salts of chloride, sulphate, sulphite, nitrate, nitrite, silica (SiO2), carbonate, bicarbonate, hydroxide and many other …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 7, Issue 1, 2016 · pp. 67–73 Read article
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River Water and Soil Analysis in Noyyal River, Tirupur
Abstract: Tirupur is famous for its textile industries. Because of this, the rate of water pollution is also very high. The generation of waste water from the industries is the main reason for the waste water problems to the environment. Some industries are not adopting any proper treatment methods to avoid this pollution, because of the high treatment cost. Without giving proper treatment the waste water is dumping in to the …
Published in Journal of Water Resource Engineering and Management · Vol. 1, Issue 1, 2014 · pp. 20–23 Read article
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Start-Up of the Two-Stage UASB Reactor Using Paper Mill Effluent
Abstract: This study is designed to evaluate the treatability potential of using two-stage anaerobic reactors (R-I and R-II) for the treatment of paper mill effluent. It was observed that the bicarbonate alkalinity of the reactors increased from 215 to 266 mg-CaCO3/L in reactor R-I and from 456 to 604 mg-CaCO3/L in reactor R-II, by the addition of an external buffer solution. The average volatile fatty acids formation noticed within the reactors …
Published in Journal of Offshore Structure and Technology · Vol. 2, Issue 1, 2015 · pp. 34–40 Read article
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Studies on Zooplankton Diversity of Manar Reservoir with Selected Physico-Chemical Parameters, Maharashtra
Abstract: Freshwater reservoirs in India are increasingly exposed to anthropogenic pressures, such as agricultural runoff, domestic sewage discharge, and water level fluctuations, which significantly influence nutrient dynamics and aquatic ecosystem stability. Biomonitoring using plankton communities provides an effective approach for evaluating ecological health, as these organisms respond rapidly to changes in physico-chemical conditions. The present investigation was carried out to assess the environmental status and trophic condition of Manar Reservoir, located …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 16, Issue 1, 2026 · pp. 20–30 Read article
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Studies on Physico-Chemical Properties of Ulhas River Water along Dombivli City Near Mumbai
Abstract: Ulhas River is one amongst the polluted rivers. The Ulhas River has its origin in Sahyadri hills near Khandala. It flows down through the industrial areas of cities such as Badlapur Ambernath, Ambivli, Ulhasnagar, Kalyan, Dombivli and finally meets the Arabian Sea. The Dombivli city is situated near Mumbai in the Maharashtra State of India. The city has tremendously industrialized, which subsequently increased the generation of wastes from these industries. …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 6, Issue 2, 2015 · pp. 1–12 Read article
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Development of a Natural Fiber Sand–Carbon Composite Filter Using Agave sisalana for Sustainable Domestic Sewage Treatment
Abstract: This study presents an innovative approach to decentralized domestic sewage treatment by integrating Agave sisalana fibers as the core functional component within a composite filtration system. The filtration column was constructed using a vertical 1:3:1 layered configuration comprising silica sand (top), Agave sisalana fibers (middle), and activated carbon (bottom). Comprehensive experimental analyses were conducted to evaluate the system’s efficacy in removing key water quality parameters, including turbidity, total solids (TS), …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 43–51 Read article
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Performance Evaluation of Eichhornia crassipes and Pista Stratiotes for Treatment of Aquaculture Wastewater
Abstract: The significance of wastewater management and disposal in aquaculture is growing steadily as a result of strict water regulations pertaining to the release of waste into natural water systems. The conventional methods are expensive to manage and thus, it is not sustainable especially in the developing countries. Therefore, the objective of this research is to utilize Eichhornia crassipes (Water hyacinth) and Pistia stratiotes (Water lettuce) in phytoremediation techniques as an …
Published in Emerging Trends in Chemical Engineering · Vol. 12, Issue 1, 2025 · pp. 46–54 Read article
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Water Hyacinth (Eichhornia crassipes) as Phytoremediator of Abattoir Contaminated Effluents
Abstract: The abattoir industry provided meat for more than 170 million Nigerians and job opportunities for teeming population. It has also been categorized as one of the industries responsible for major pollution of soil and water resources. The aim of this study was to analyze the pollutants present in the effluents from the selected abattoir and evaluate the effectiveness of water hyacinth (Eichhornia crassipes) in removing these pollutants. The experiment was …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 16, Issue 1, 2025 · pp. 1–08 Read article
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Physicochemical Parameters for Water-Environment Quality Testing: A Review
Abstract: The increasing threat posed by contaminants in air, water, and soil is a pressing issue globally, exacerbated by population growth, industrialization, and agricultural practices. These factors contribute to significant water pollution, introducing harmful substances that compromise human health. Natural processes, such as weathering and soil leaching, alongside mining activities, further degrade water quality. Regular monitoring of drinking water is essential, as contaminated sources can lead to a variety of waterborne …
Published in International Journal of Pollution: Prevention & Control · Vol. 3, Issue 1, 2025 · pp. 08–12 Read article
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Assessment of Water Quality along River Ethiope, Delta State
Abstract: The environment, economic growth, and human health all depend on the quantity and quality of water supplies. Given this, the significance of water quality monitoring cannot be overstated.This study was aimed at assessing the water quality of River Ethiope. To achieve this, surface water samples were collected from Ethiope River along its banks at the following towns; Umuaja (SWI), Ebedie (SW2), Abraka (SW3), Sapele (SW4) and Ughara (SW5) axis during …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 16, Issue 2, 2025 · pp. 8–16 Read article
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The Effects of Physiochemical Parameters and Microbial Counts on Metal Coupons Corrosions in Freshwater Environment at Different Water Depths
Abstract: The effect of water quality on metal coupon corrosion was investigated at the New Calabar River in Choba. The study examined metal corrosion rates at five different depths: 30 cm, 60 cm, 90 cm, 120 cm, and 150 cm in a freshwater environment. Water samples were collected at each depth and analyzed for physicochemical and microbial parameters to understand their impact on metal degradation. Key parameters measured included pH, Electrical …
Published in Journal of Water Pollution & Purification Research · Vol. 12, Issue 2, 2025 · pp. 31–51 Read article
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Comparative Review of Innovations in Self-Compacting Concrete (SCC) Technologies
Abstract: Self-compacting concrete (SCC) is a revolutionary material in contemporary construction, with better workability and lower labor requirements without any sacrifice in strength or durability. The latest advances have been in terms of furthering its environmental and performance attributes by using different materials and methods. One of them is substituting ordinary Portland cement with high-volume fly ash and calcined calcium carbonate (BCC), cutting CO₂ emissions by as much as possible while …
Published in Journal of Construction Engineering, Technology & Management · Vol. 15, Issue 3, 2025 · pp. 99–103 Read article
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Use of Advanced (i.e., Membrane) Technology for the Wastewater Treatment of Coke Ovens
Abstract: Coke plants produce gas, and coke for metallurgical purposes and also supply the raw materials for the manufacture of dyes, drugs, and high explosives. Naturally found coal is converted into coke in coke ovens. A large quantity of water is used for quenching hot coke and for washing gas. After quenching the wastewater contains high-suspended solids, high biochemical oxygen demand (BOD) (600–1300 mg/L), chemical oxygen demand (COD) (1500–3000mg/L), phenols(500–650 mg/L), …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 2, Issue 1-3, 2012 · pp. 114–126 Read article
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Wastewater Analysis of Gadoon-Amazai Industrial Zone
Abstract: This study was designed to evaluate the polluting strength of the industrial effluent of Gadoon-Amazi Industrial Zone (GAIZ). The main purpose of the study was to analyze the wastewater characteristics of the major industries in the subject area. Various representative samples were collected at regular interval for a period of 6–8 months. These samples were then tested in the laboratory using available standard procedures. The major industries pointed out in …
Published in Journal of Industrial Safety Engineering · Vol. 2, Issue 1, 2015 · pp. 43–47 Read article
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Performance Appraisal of Two-stage On-site Domestic Wastewater Treatment System under Ambient Environment
Abstract: AbstractThe rapid growth in population has rendered the centralized sewerage systems a non-realistic option in sparsely populated areas. Consequently, an on-site wastewater treatment system (OWTS) is a viable alternative and cost-effective solution of sewerage system. Septic tanks with soil absorption systems are a simple mean of onsite treatment of the domestic wastewater. However septic tanks have low treatment efficiency along with several technical and constructional drawbacks. In order to improve …
Published in Recent Trends in Civil Engineering & Technology · Vol. 8, Issue 1, 2018 · pp. 20–28 Read article
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Study of the Effect of Rice Husk As An Active Low-cost Adsorbant for Textile Wastewater Treatment
Abstract: Textile wastewater contains different colors which are harmful to the environment. Activated carbon can be used for the decolorization of textile wastewater. Most of the textile plants do not use the activated carbon due to its expensive cost and still it was classified as imported item. Low-cost adsorbant produced from locally available materials can solve this problem. This paper describes the color removal of textile wastewater by adsorption process using …
Published in Recent Trends in Civil Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 16–19 Read article
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Study of the Effect of Saline Solution on the Extraction of the Acacia Gum Active Coagulant for Textile Wastewater Treatment
Abstract: The use of synthetic coagulants is not regarded as suitable due to health and economic considerations. A new coagulant obtained through polymerization of acacia gum extract has been characterized in the removal of dangerous dye pollutants. The present study was aimed to investigate the effects of acacia gum as coagulant in treatment of textile wastewater. The coagulant prepared was employed for the removal of sludge at the different doses. The …
Published in Recent Trends in Civil Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 20–24 Read article
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Design and Fabrication of Mini-Household Water Treatment System
Abstract: Access to safe drinking water remains a serious challenge in many developing countries, including Nigeria, due to pollution, poor infrastructure, and ineffective water management. This study presents the design, fabrication, and performance evaluation of a mini household water treatment system that uses charcoal carbon derived from desert date wood. The project aims to provide a low-cost, gravity-driven, and sustainable water purification solution for rural and peri-urban households. The system consists …
Published in Journal of Water Resource Engineering and Management · Vol. 13, Issue 2, 2026 · pp. 26–37 Read article
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Utilization of Saccharomyces cerevisiae for Enhanced Electricity Generation during Domestic Wastewater Treatment via Microbial Fuel Cell Technology
Abstract: Abstract:The viable, cost-effective and energy-efficient wastewater treatment remains a curious concern among scientists. Microbial fuel cell (MFC) can offer such elegant solutions. MFC is an electrochemical system that converts chemical energy of chemical compounds into electricity via metabolic activities of microorganisms. MFCs are cost-effective methodology for wastewater treatment due to removal of contaminants from wastewater while at the same time producing electrical power. The wastewater, which is a source of …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 5, Issue 1, 2015 · pp. 45–50 Read article
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Assessment of the Potential of Permeable Concrete using Blast Furnace Slag in Treating the Highway Side Storm Water
Abstract: Storm water from highway side contains organic and inorganic pollutants including significant amount of heavy metals which need to be treated before the storm water is let into the natural water bodies. In this study, the potential of pervious concrete using blast furnace slag was assessed for pollutants removal from the highway side storm water. Removal efficiencies in respect of nitrate, phosphate, chemical oxygen demand (COD), TSS, lead, chromium, nickel …
Published in Journal of Water Pollution & Purification Research · Vol. 5, Issue 2, 2018 · pp. 5–10 Read article