30 research outputs found
Utilizations of Electro-coagulated Sludge from Wastewater Treatment Plant data as an Adsorbent for Direct Red 28 Dye removal
No full textElectro-coagulated, EC, sludge from the electrochemical processes of textile wastewater treatment plant can be reuse as an adsorbent for a certain cationic and anionic azo dyes from textile and or leather industry effluents. Because EC sludge expected to have iron oxide and hydroxide during the electrochemical processes of wastewater treatment, it can be used for adsorptions for azo dye removal. Produced EC sludge can have positively charged surface, specially ferric and or ferrous surface charge. Thus, EC sludge as an adsorbent will have adsorption potential to adsorb acidic (anionic) dyes in the principles of electrostatic attraction. To this study, the author intends to use direct red 28 (DR28) dyes as a modal azo dye from the textile and or leather industry. Basic batch adsorption parameters (effect of dye concentration, solution pH, reaction temperature, mixing time and adsorbent dosage), as well as adsorption isotherm, kinetics, and thermodynamics study on to raw and calcined EC sludge were investigated. DR28 dye on to calcined EC adsorbent has recorded as highly removal efficiency at pH of 2, initial dye concentration of 20mg/L, time of 60 min, adsorbent dosage 1g/100mL and temperature of 25±2℃, ambient temperature
Examining Heat Treatment Effects on Transformation of Iron Oxides and Crystallinity phase identification Dataset from Recovered Iron Hydroxide Electro-coagulated Sludge
No full textIron hydroxide Electro-coagulated sludge from the electrochemical processes of textile wastewater treatment plant have recovered and oxidative transformed iron oxides production with heat treatment were produced. Because hematite and magnetite iron oxides can be produce from iron hydroxide, electro-coagulated sludge as iron hydroxide rich sludge can be used iron oxides source for different application. Such as for catalyst, medical and commercial applications. Heat treatment of iron hydroxide with a certain temperature range will have an effect for magnetic nature iron oxides formation. Thus, EC sludge as iron hydroxide were used crystalliniry nature as well as phase identification. To this experiment, the author intends to use four critical temperature values as a base to examine the phase change by producing different iron oxides (α-Fe2O3, Fe3O4…). X-ray diffraction study using XRD machine as well as comparative examination with standard references, the international central diffraction data (ICDD) were investigated. The heat treatment from 300 oC to 800 oC have confirm us the iron oxide formation and at high temperature the patterns become more crystal formation
XRD analysis of recovered iron materials from electro-coagulated sludge
No full textIron hydroxide Electro-coagulated sludge from the electrochemical processes of textile wastewater treatment plant has recovered and oxidative transformed iron oxides production with heat treatment was produced. Because hematite and magnetite iron oxides can be produce from iron hydroxide, electro-coagulated sludge as iron hydroxide and oxy-hydroxide rich sludge can be used iron oxides source for different applications. Such as for catalyst, medical and commercial applications. Heat treatment of iron hydroxide with a certain temperature range will have an effect on magnetic nature iron oxides formation. Thus, EC sludge as iron hydroxide was used crystallinity nature as well as phase identification. To this experiment, the author intends to use four critical temperature values as a base to examine the phase change by producing different iron oxides (α-Fe2O3, Fe3O4…). X-ray diffraction study using the XRD machine as well as comparative examination with standard references, the international central diffraction data (ICDD) were investigated. The heat treatment from 300 oC to 800 oC have confirmed us the iron oxide formation and at high temperature, the patterns become more crystal formation
Mr.
No full textKaolin adsorbent expected to adsorb the textile dye molecule. Because clay materials have good surface area for adsorption. Also, clay materials have charged, both positive and negative, surface area. Specially kaolin has a dominant-negative surface charge. As a result, kaolin adsorbent will have a potential capacity to adsorb basic dyes. The operational parameters ( effect of dye concentration, pH, temperature, contact time and adsorbent dosage), as well as modeling ( adsorption isotherm, kinetics, and thermodynamics study) on to raw, calcined and beneficiated kaolin, were investigated. Basic Yellow Dye on to the beneficiated kaolin has recorded as highly removal efficiency at pH of 9, initial dye concentration of 20mg/L, time of 60 min, adsorbent dosage 1g/100mL and temperature of 30℃
Mr.
No full textKaolin adsorbent expected to adsorb the textile dye molecule. Because clay materials have good surface area for adsorption. Also, clay materials have charged, both positive and negative, surface area. Specially kaolin has a dominant-negative surface charge. As a result, kaolin adsorbent will have a potential capacity to adsorb basic dyes. The operational parameters ( effect of dye concentration, pH, temperature, contact time and adsorbent dosage), as well as modeling ( adsorption isotherm, kinetics, and thermodynamics study) on to raw, calcined and beneficiated kaolin, were investigated. Basic Yellow Dye on to the beneficiated kaolin has recorded as highly removal efficiency at pH of 9, initial dye concentration of 20mg/L, time of 60 min, adsorbent dosage 1g/100mL and temperature of 30℃
Research Data for: Adsorption Study of Basic Yellow Dye Dataset Using Ethiopian Kaolin as an Adsorbent
No full textKaolin adsorbent expected to adsorb the textile dye molecule. Because clay materials have good surface area for adsorption. Also, clay materials have charged, both positive and negative, surface area. Specially kaolin has a dominant-negative surface charge. As a result, kaolin adsorbent will have a potential capacity to adsorb basic dyes. The operational parameters ( effect of dye concentration, pH, temperature, contact time and adsorbent dosage), as well as modeling ( adsorption isotherm, kinetics, and thermodynamics study) on to raw, calcined and beneficiated kaolin, were investigated. Basic Yellow Dye on to the beneficiated kaolin has recorded as highly removal efficiency at pH of 9, initial dye concentration of 20mg/L, time of 60 min, adsorbent dosage 1g/100mL and temperature of 30℃
Mr.
No full textKaolin adsorbent expected to adsorb the textile dye molecule. Because clay materials have good surface area for adsorption. Also, clay materials have charged, both positive and negative, surface area. Special kaolin has a dominant-negative surface charge. As a result, kaolin adsorbent will have a potential capacity to adsorb basic dyes. The operational parameters ( effect of dye concentration, pH, temperature, contact time and adsorbent dosage), as well as modeling ( adsorption isotherm, kinetics, and thermodynamics study) on to raw, calcined and beneficiated kaolin, were investigated. Basic Yellow Dye on to the beneficiated kaolin has recorded as highly removal efficiency at pH of 9, initial dye concentration of 20mg/L, time of 60 min, adsorbent dosage 1g/100mL and temperature of 30℃
Recycling electro-coagulated sludge from textile wastewater treatment plants as an adsorbent for the adsorptions of fluoride in an aqueous solution
No full textThis research investigated the high content of iron-based materials from recycled electro-coagulated (EC) sludge for the adsorptive removal of fluoride, and the properties of the material were characterized. The thermal activation of EC sludge in which the unwanted impurity was removed by beneficiation and thermally activated at 500 °C, and was used for fluoride removal. Basic operating parameters (mixing time, adsorbent dosage, adsorbate concentration, solution pH, and temperature) were examined to evaluate the optimum de-fluoridation capacity (DC). The functional groups, the crystalline structure, and surface morphology of thermally treated and raw EC sludge were analyzed using FTIR, XRD, and SEM, respectively, and demonstrates that thermally activated EC sludge contains significant content of magnetite and hematite. The optimum DC was recorded as 5.12 mg of F−/gm with experimental conditions: mixing time = 20 min, adsorbent dosage = 0.3 gm/100 ml, initial fluoride concentration = 1 mg/L, and pH = 5 at the temperature of 353 K. The Langmuir isotherm model was fitted, and the capacity is calculated as 6.43 mg/g. The adsorption process follows the Pseudo-Second-order kinetic models. It can be concluded that the prepared adsorbents have excellent fluoride removal capacity, and EC sludge can be used as an alternative adsorbent for de-fluoridation
Plastic waste management strategies toward zero waste: Status, perspectives and recommendations for Ethiopia
No full textSince 1979, plastic companies have significantly expanded their markets. Evidence suggests that excessive plastic use in Ethiopia has exacerbated environmental pollution, contributing to a “quadruple crisis” involving climate change, biodiversity loss, pollution and public health and economic impacts. To address this, the Ethiopian government needs to establish effective plastic waste management strategies. Key future direction and recommendation include (1) Developing and enforcing national strategies, including a ban on many single-use plastics, for sustainable plastic waste management; (2) adopting international best practices and policies to move toward a zero-waste approach; (3) investing in a circular economy and plastic waste management systems; (4) strengthening policies through comprehensive legislation and extended producer responsibility frameworks; (5) establishing a council to integrate scientific research into policymaking; (6) promoting green technologies and innovations, such as plastic waste-to-energy and smart waste management; (7) engaging in global efforts to monitor hazardous chemicals in plastics and support transparency in a toxic-free circular economy to ensure the public’s right to information
