scholarly journals Treatment of Oil-Contaminated Water by Modified Polysilicate Aluminum Ferric Sulfate

Processes ◽  
2018 ◽  
Vol 6 (7) ◽  
pp. 95 ◽  
Author(s):  
Zhaoyang You ◽  
Li Zhang ◽  
Shujuan Zhang ◽  
Yongjun Sun ◽  
Kinjal Shah
Keyword(s):  
Ferric Sulfate ◽  
Inorganic Materials ◽  
Contaminated Water ◽  
Manganese Sulfate ◽  
Complexation Reaction ◽  
Oily Wastewater ◽  
Oil Removal ◽  
Polysilicic Acid ◽  
Good Potential ◽  
Manganese Magnesium

In this experiment, a variety of inorganic materials were simply compounded with Polysilicate Aluminum Ferric Sulfate (PSAFS) to treat emulsified oil-contaminated water. Manganese sulfate (MnSO4), magnesium sulfate (MgSO4), and zinc sulfate (ZnSO4) were selected as the materials to modify PSAFS in order to obtain a coagulant with good flocculation performance. During the preparation of modified PSAFS, metal manganese, magnesium, and zinc were introduced for modification, and four factors were used to optimize the best proportion of modifiers and PSAFS. The results showed that the order of demulsification and oil-removal ability is as follows: Mn-PSAFS (Mn-modified PSAFS) > Zn-PSAFS (Zn-modified PSAFS) > Mg-PSAFS (Mg-modified PSAFS) > PSAFS. Modified PSAFS was characterized by infrared spectroscopy (IR) and a Scanning Electron Microscope (SEM). In the range of 604 cm−1 to 1200 cm−1, due to the complexation reaction between metal ions and polysilicic acid, the absorption peaks of the modified PSAFS and PSAFS were significantly different. SEM results revealed that the particles of the spatial network structure were fibrous and arranged more closely (0.5 mm × 50.0 mm) than others. This study provided that the modified PSAFS had good potential application in treating emulsified oily wastewater in the future.

scholarly journals Facile Synthesis of Silica Composites with Oil Sorption Efficiency from a Vital Agricultural Waste of Corn Stalk Cultivated in Bishoftu, Ethiopia

2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
M. Kamaraj ◽  
Sudarshan Kamble ◽  
S. V. R. K. N. Sonia
Keyword(s):  
Agricultural Waste ◽  
Corn Stalk ◽  
Oily Wastewater ◽  
Oil Removal ◽  
Facile Synthesis ◽  
Environmental Implications ◽  
Batch Mode ◽  
Amorphous Nature ◽  
Oil Adsorption ◽  
Oil Spill Cleanup

This study is attempted to extract the amorphous silica composites using the combined HNO3 leaching-calcination (600°C/6 h) method from corn stalk harvested in Bishoftu, Ethiopia, owning to its profuse dumping, less cost, and negative environmental implications. The resultant composite characteristics such as amorphous nature are connected via the grain boundary which produces an agglomerated structure that has a disordered morphology, and the presence of siloxane and silanol groups, as well as additional functional groups, is reported. The synthesized product is applied in the removal of oil from synthetic oily wastewater (SYOWW) using batch mode delivering a maximum oil removal of up to 99%. The outcome of the study features the potential acclimatization of the Ethiopian corn stalk as a substitute precursor for the production of silica composites which has a potential oil adsorption capacity that can be used for oil spill cleanup.

Preparation of a New Inorganic-Organic Composite Dual-Coagulant and Application of Oily Wastewater Treatment

2011 ◽  
Vol 233-235 ◽  
pp. 523-527 ◽  
Author(s):  
Song Jiang Ma ◽  
Mei Ling Fu ◽  
Fang Wen Li ◽  
Nian Fen Wu ◽  
Juan Yang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Removal Rate ◽  
Optimal Dosage ◽  
Oily Wastewater ◽  
Oil Removal ◽  
Treatment Efficiency ◽  
Coagulation Performance ◽  
Oily Wastewater Treatment ◽  
Ph Range ◽  
Scanning Electron

A new inorganic-organic composite dual-coagulant (PAFC-CPAM) was prepared by polyaluminum ferric chloride (PAFC) and cationic polyacrylamide (CPAM) and its treatment efficiency for oily wastewater was evaluated by coagulation jar tests. PAFC-CPAM dual-coagulants were characterized by FT-infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The FTIR spectra illustrated that there were some chemical reactions between PAFC and CPAM in PAFC-CPAM. SEM micrographs testified that PAFC-CPAM formed compact net structure which is different from PAFC and CPAM, resulting to its outstanding coagulation performance other than monomeric coagulant in treating oily wastewater. Coagulation jar tests presented that PAFC-CPAM improved 1.14% and 0.38% of oil removal rate and reduced 0.35NTU and 0.06NTU of residual turbidity than PAFC and CPAM respectively at the optimal dosage of 120mg/L. PAFC-CPAM enhanced 4.56% and 2.12% of oil removal efficiency and decreased 0.27NTU and 0.01NTU of residual turbidity on average in comparison with PAFC and CPAM respectively in the pH range of 4.0-8.0. All of above-mentioned experiment results demonstrated that PAFC-CPAM behaved superior coagulation performance than PAFC and CPAM.

scholarly journals Effects of environmental conditions on propanil degrading activity of Acinetobacter baumannii DT

2020 ◽  
Vol 42 (3) ◽  
Author(s):  
Dau Thi Hong Ngoc ◽  
Ha Danh Duc ◽  
Nguyen Thi Dieu Thuy
Keyword(s):  
Acinetobacter Baumannii ◽  
Environmental Conditions ◽  
Dissipation Rate ◽  
High Salinity ◽  
Contaminated Water ◽  
Extreme Conditions ◽  
Bacterial Growth Rate ◽  
Treated Soil ◽  
Good Potential ◽  
Degradation Activity

Effects of various environmental conditions on propanil degrading activity of Acinetobacter baumannii DT were investigated. Results showed that both propanil degradation and bacterial growth rate were reduced when bacteria were cultured in extreme conditions, such as high acidic or alkaline levels or high salinity. Moreover, the propanil degradation activity of A. baumannii DT decreased in contaminated water. The propanil dissipation rate was higher in herbicides-contaminated soil (treated soil) than in herbicide-free soil. In soil inoculated with A. baumannii DT, propanil removal was enhanced. Even though the propanil degrading activity of A. baumannii DT were reduced under extremely stressful conditions, this bacterium retained a good potential to degrade propanil in real environmental conditions.  

New Organo-Inorganic Materials for Water Contaminants Remediation

2007 ◽  
Vol 1007 ◽  
Author(s):  
Araceli Ortiz-Polo ◽  
Rosa M Richards-Uribe ◽  
Elena M Otazo-Sánchez ◽  
Francisco Prieto-García ◽  
Juan Hernández-Ávila ◽  
...  
Keyword(s):  
Metal Ions ◽  
Low Cost ◽  
Toxic Metal ◽  
Inorganic Materials ◽  
Contaminated Water ◽  
Metallic Ions ◽  
Water Contaminants ◽  
Natural Mineral ◽  
X Ray ◽  
Mineral Soils

ABSTRACTMaterials with high specific surface areas such as pillared clays and zeolites have been studied and can be used to remediate contaminated water. Chemical functionality or compounds can be anchored or attached to the surface of a low-cost material used as a support matrix. This work studied the suitability of inexpensive natural mineral soils to decontaminate waste water from mine and metallurgic industries. Native mineral soils were also impregnated with commercial 1,3 diphenyltiourea (DFT) to improve retention of heavy metal ions. The natural mineral soils were from Hidalgo State in Mexico: white marble (calcite: CaCO3), volcanic gravels named “red and black tezontles” (anorthite matrix: CaO.Al2O3.(SiO2)2 with FexOy and PbxOy), green zeolites (mordenite: Na2CaK2. OAl2O3.10SiO2.7H2O) and kaolin (kaolinite: Al2O3(SiO2)2.H2O). They were ground and sieved. The 50 mesh fraction was studied by Raman and FTIR spectroscopy, X ray powder diffraction and scanning electronic microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDX). From these solids new hybrid materials were prepared by impregnation with DFT in ethanolic solutions. Products were characterized and compared with untreated materials. Tezontles, zeolites and kaolinite showed the best impregnation levels. In their surfaces, grown DFT crystals showed different structures. The obtained hybrid solids were tested using several metallic ion solutions: Mn(II), Ni(II), Co(II), Cd(II), Hg(II), Pb(II), Cu(II) and Zn(II). The metallic adducts were analyzed and the adsorption capacity is discussed. The materials showed high remotion percentages for all metal ions and low Hg(II), Pb(II) and Cd(II) final concentrations. They have good potential for use in remediation of contaminated water with highly toxic metal ions. The metallic adducts were characterized by FTIR and Raman spectroscopy, as well as SEM/EDX analysis. However, all of mentioned methods were not useful for detection of impregnated DFT nor adsorbed or coordinated metallic ions on the supporting materials. Only the SEM/EDX method was found to be suitable for analysis.

scholarly journals COAGULATION/FLOCCULATION PROCESS FOR OILY WASTEWATER TREATMENT

2021 ◽  
Vol 25 (Special) ◽  
pp. 3-68-3-76
Author(s):  
Hussein A. Jabbar ◽  
◽  
Mohammed J. Alatabe ◽  
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Aluminum Sulfate ◽  
Low Cost ◽  
Suspended Solid ◽  
Ferric Sulfate ◽  
Oily Wastewater ◽  
Dose Concentration ◽  
Oily Waste ◽  
Oily Wastewater Treatment

Oily wastewater is one of the most dangerous forms of environmental pollution, it is large amount of water that is wasted petrochemical industries, oily waste water contains oil, suspended solids, and dissolved solids. The study investigates the treatment of real oily waste water that was collected from al-Dura refinery (Iraq) /Middle Refineries Company from oil and suspended solid contamination for re-use and environmental consideration using coagulation and flocculation processes. Coagulation /flocculation is a common method used as primary purification processes to oily wastewater treatment due to its usability, performance, and low cost. Coagulation experiments were completed by the Jar Test device. The additives coagulants of ferric sulfate and aluminum sulfate were in a range about (10- 25) ppm, as well as polyelectrolyte- (polyacrylamide) as an additional flocculent in the range (1-4) ppm. The results show that ferric sulfate was more efficient in removing turbidity than Aluminum sulfate under the same conditions, with the best removal of turbidity at dose concentration 20 ppm of Ferric sulfate and a flocculent dose concentration of 3 ppm of polyacrylamide, also with oil content decreasing from 288 ppm to 14.4 ppm and the turbidity removal from 187 to 8.5 NTU.

scholarly journals Preparation of a selective flocculant for treatment of oily wastewater produced from polymer flooding and its flocculant mechanism

2019 ◽  
Vol 79 (9) ◽  
pp. 1648-1656 ◽  
Author(s):  
Fei Wang ◽  
Hongmei Lü ◽  
Xiujun Wang ◽  
Bo Jing ◽  
Ming Duan ◽  
...  
Keyword(s):  
Bulk Water ◽  
Polymer Flooding ◽  
Oily Wastewater ◽  
Oil Removal ◽  
Selective Flocculation ◽  
Evaluation Indexes ◽  
Polarization Interferometry ◽  
Cationic Flocculant ◽  
Dual Polarization Interferometry ◽  
Hydrolyzed Polyacrylamide

Abstract There are residual polymers in the oily wastewater produced from polymer flooding (OWPF); keeping the residual polymer in the water during the flocculation is meaningful and challenging. In this paper, a selective flocculant (denoted as PDC10) which can remove the oil while keeping partially hydrolyzed polyacrylamide (HPAM) in water was prepared by copolymerization of decyl two methyl vinylbenzyl ammonium chloride (C10MVBA) and dimethyl aminopropyl methacryamide (DMAPMA). By using oil removal and HPAM retention as evaluation indexes, the synthesis condition of PDC10 was optimized. The optimum PDC10 exhibited oil removal of 98.0% and HPAM retention of 80.5%. Its HPAM retention is much higher than that of a regular cationic flocculant. Measurements of zeta potential, interfacial tension, interfacial dilational modulus and a dual polarization interferometry (DPI) test were carried out for investigating the flocculation mechanism of PDC10. The mechanism of PDC10 was that it can bridge and flocculate oil droplets by electrostatic interaction and hydrophobic interaction. It also preferred to distribute at the interface, and its interaction with HPAM in bulk water was weak, which confirms its selective flocculation properties.

Research on the Application of Laccase to the Treatment of Oily Wastewater

2010 ◽  
Vol 45 (1) ◽  
pp. 91-98 ◽  
Author(s):  
Zhi Lin Li ◽  
Wei Liu ◽  
Xin Fang Chen ◽  
He Sheng Li ◽  
Yun Miao Tian
Keyword(s):  
Reaction Time ◽  
Removal Rate ◽  
Catalytic Performance ◽  
The Other ◽  
Oily Wastewater ◽  
Oil Removal ◽  
Other Hand ◽  
Oil Concentration

Abstract The feasibility of using laccase to treat oily wastewater was examined. When only laccase was added to the synthetic oily wastewater, the suitable technological conditions were laccase at 3 U/mL, pH at 6.0, a temperature of 30°C, and a reaction time of 6 h for the initial oil concentration of 120 mg/L. Under those conditions, the rate of oil removal was as high as 69%. The effects of Mg2+, Mn2+, Cu2+, and Fe2+ ions in wastewater on the rate of oil removal using laccase were investigated. The results showed that Cu2+and Fe2+ ions obviously inhibited the catalytic performance of laccase under the studied concentration. On the other hand, Mg2+ and Mn2+ ions only had slight effects on the rate of oil removal for the range of concentrations studied. A 95% oil removal rate could be obtained when actual wastewaters were treated using laccase with the additive chitosan under the suitable technological conditions.

Comparison of Several Technical Treatment of Oily Wastewater by Fly Ash

2014 ◽  
Vol 955-959 ◽  
pp. 2747-2750 ◽  
Author(s):  
Tao Yin ◽  
Xiang Yang Huang
Keyword(s):  
Reaction Mechanism ◽  
Fly Ash ◽  
Adsorption Capacity ◽  
Treatment Effect ◽  
Future Research ◽  
Oily Wastewater ◽  
Oil Removal ◽  
Dual Effect ◽  
Treatment Processes ◽  
Final Treatment

Oily wastewater and fly ash will cause great pollution to the environment, the paper reviewed the fly ash as the oil removal medium, through the means of directly adding as adsorbents, preparing fly ash ceramisite, adding to remove oil after modification and combing with other treatment processes, etc., had better treatment effect on a variety of oily wastewater generated from different backgrounds. The results showed that using fly ash to treat the oily wastewater could achieve "using waste to treat waste", and could play a dual effect on the environmental protection. Meanwhile it pointed out deficiencies in the existing processes, and the future research should rely mainly on improving the adsorption capacity, the separation and the final treatment of saturated fly ash, and strengthening the research on reaction mechanism.

Sign in / Sign up

Export Citation Format

Share Document