OIL REMOVAL FROM REFINERY WASTEWATER THROUGH ADSORPTION ON LOW COST NATURAL BIOSORBENTS

2020 ◽  
Vol 19 (1) ◽  
pp. 105-112
Author(s):  
Ausra Mazeikiene ◽  
Zineb Chaouki ◽  
Hicham Zaitan ◽  
Mostapha Nawdali ◽  
Saulius Vasarevicius
Keyword(s):  
Low Cost ◽  
Oil Removal ◽  
Refinery Wastewater

scholarly journals Enhanced Oil Removal by a Non-Toxic Biosurfactant Formulation

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 467
Author(s):  
Emília Mendes da Silva Santos ◽  
Isabela Regina Alvares da Silva Lira ◽  
Hugo Moraes Meira ◽  
Jaciana dos Santos Aguiar ◽  
Raquel Diniz Rufino ◽  
...  
Keyword(s):  
Room Temperature ◽  
Low Cost ◽  
Aeration Rate ◽  
Oil Removal ◽  
Central Composite Rotatable Design ◽  
Chemical Methods ◽  
Ph Values ◽  
Spectroscopic Analyses ◽  
New Formulation ◽  
Central Composite

In this study, a new formulation of low-cost, biodegradable, and non-toxic biosurfactant by Candida sphaerica UCP 0995 was investigated. The study was conducted in a bioreactor on an industrial waste-based medium, and a central composite rotatable design was used for optimization. The best results, namely a 25.22 mN/m reduction in surface tension, a biosurfactant yield of 10.0 g/L, and a critical micelle concentration of 0.2 g/L, were achieved in 132 h at an agitation speed of 175 rpm and an aeration rate of 1.5 vvm. Compositional and spectroscopic analyses of the purified biosurfactant by chemical methods, Fourier transform infrared spectroscopy, and nuclear magnetic resonance suggested that it is a glycolipid-type biosurfactant, and it showed no cytotoxicity in the MTT assay. The biosurfactant, submitted to different formulation methods as a commercial additive, remained stable for 120 days at room temperature. Tensioactive properties and stability were evaluated at different pH values, temperatures, and salt concentrations. The biosurfactant obtained with all formulation methods demonstrated good stability, with tolerance to wide ranges of pH, temperature and salinity, enabling application under extreme environmental conditions. Bioremediation tests were performed to check the efficacy of the isolated biosurfactant and the selected microbial species in removing oil from soil. The results demonstrated that the biosurfactant produced has promising properties as an agent for the bioremediation of contaminated soil.

scholarly journals The preliminary study of oil removal using lemon peel waste

2020 ◽  
Vol 3 (1) ◽  
pp. 56
Author(s):  
Nur Syahirah Amirah Mohd Jopery ◽  
Mohammad Abdullah ◽  
Soo Kum Yoke ◽  
Ahmad Rozaimee Mustaffa
Keyword(s):  
Lake Water ◽  
Oil Pollution ◽  
Low Cost ◽  
Diesel Oil ◽  
Oil Removal ◽  
Ocean Water ◽  
Lemon Peel ◽  
Lubricant Oil ◽  
Waste Vegetable Oil ◽  
Different Types

While the discovery of oil contributes a lot towards a country’s economy and technological development, it is also the cause for oil pollution. As such, this study proposes to use lemon peel waste as a low-cost adsorbent to manage oil pollution. For the untreated adsorbent, the lemon peels were cut into small pieces and dried under sunlight for 48 hours. Then, it was further dried in an oven for 24 hours and ground into powder. For the treated adsorbent, the lemon peels were soaked in 0.5 M of sodium hydroxide (NaOH) solution. The adsorbent was used to adsorb different types of oil (diesel oil, lubricant oil, waste vegetable oil) and in different types of water (ocean water, lake water, tap water) with different amounts of adsorbent which is 0.2 g, 0.4 g, 0.6 g, 0.8 g, and 1.0 g for adsorbent dosage experiment. While for types of water experiment, a ratio for volume of water and oil of 3:1, and constant mass adsorbent was used. The result showed that untreated adsorbent can adsorb higher amount of oils than treated adsorbent. The oil that could be easily adsorbed using lemon peels adsorbent is diesel oil with 89.91% adsorption. For the types of water, the result changes according to different types of water and oil used. It was found that the higher the mass adsorbent, the lower the percentage of oil removal. The highest percentage of diesel oil removed in ocean water is 81.68%. While the removal of lubricant oil and waste vegetable oil in lake water is 66.6% and 72.13%, respectively. Scanning Electron Microscopy (SEM) shows that treated lemon peels had small pores compared to untreated lemon peel waste. This study demonstrated and proposed that the lemon peel waste has a good potential in low-cost oil waste removal.

scholarly journals Evaluation of Thermally Treated Calotropis Procera Fiber for the Removal of Crude Oil on the Water Surface

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3894
Author(s):  
Sobral Hilário ◽  
Batista dos Anjos ◽  
Borges de Moraes Juviniano ◽  
da Silva
Keyword(s):  
Crude Oil ◽  
Sorption Capacity ◽  
Low Cost ◽  
Water Layer ◽  
Petroleum Products ◽  
Calotropis Procera ◽  
Oil Removal ◽  
Oil Sorption ◽  
Static Systems ◽  
Thermally Treated

Biosorbents have been highlighted as an alternative method for the removal of contaminants from spills or leaks of oil and its derivatives, since they are biodegradable, are highly available, low-cost, and have a good sorption capacity. This research investigated the sorption capacity of Calotropis procera fiber in natura (CP) and thermally treated (150 °C and 200 °C) for crude oil removal and recovery. The oil sorption tests were carried out in a dry and water (layer) static systems. The assays revealed that CP fiber has excellent hydrophobic-oil properties and good crude oil sorption capacity, about 75 times its own weight (76.32 g/g). The results of the treated fibers, CPT150 and CPT200, showed oil sorption capacities (in 24 h) higher than CP, between 94.31–103.37 g/g and 124.60–180.95 g/g, respectively. The results from sample CPT200 showed that it can be an excellent biosorbent for the removal of crude oil and other derivatives due to its high hydrophobicity, great reuse/resorption capacity, and ability to retain oil within the fiber lumens. Thus, it can be applied in the recovery, cleaning, and removal of petroleum products and its derivatives from spills and leaks in the future.

scholarly journals Valorization of Opuntia ficus-Indica Pads and Steel Industry FeCl3-Rich Rejection for Removing Surfactant and Phenol from Oil Refinery Wastewater Through Coagulation-Flocculation

2020 ◽  
Vol 10 (28) ◽  
Author(s):  
Ouafae Dkhissi ◽  
Mohammed Chatoui ◽  
Ahmed El Hakmaoui ◽  
Meriem Abouri ◽  
Yassine Kadmi ◽  
...  
Keyword(s):  
Vegetable Oil ◽  
Low Cost ◽  
Oil Refinery ◽  
Phenol Removal ◽  
Refinery Wastewater ◽  
Pollution Load ◽  
Cost Effective Treatment ◽  
High Pollution ◽  
Pollution Loads ◽  
Oil Refinery Wastewater

Background. Refinement of crude vegetable oil generates a large amount of wastewater and is a source of water pollution due to the presence of surfactants and phenols. Phenols are toxic aromatic compounds that can be lethal to fauna and flora, entraining the deceleration or blocking of the self-purification of biological treatments. In addition, surfactants can limit biological processes by inhibiting microorganisms that degrade organic matter. Objectives. The aim of the present study was to evaluate the treatment of refinery rejects loaded with phenols and detergents by coagulation flocculation using cactus pads (genus Opuntia) as a bio-flocculant and 30% iron(III) chloride (FeCl3) for surfactant and phenol removal. In addition, operating costs were evaluated for these pollution mitigation methods. Methods. The effectiveness of cactus pads as a bio-flocculant and 30% FeCl3 for surfactant and phenol removal were studied using a jar test. The study was conducted on vegetable oil refinery wastewater from a refinery company in Casablanca, Morocco. Results. The pollution load in wastewater varied widely from day to day. We evaluated the effect of cactus juice and 30% FeCl3 on high and low pollution loads. Opuntia pads showed a favorable potential for the treatment of low pollution load wastewater, with 78% and 90% of surfactant and phenol removed, respectively. However, the removal of high pollution load was less effective (42% and 41% removal of surfactant and phenol, respectively). The turbidity of low and high pollution load was reduced by 98.85% and 86%, respectively. The results demonstrate that 30% FeCl3 can effectively treat both low and high pollution loads (90% and 89% phenol removal, respectively, and 90% and 70% surfactant removal, respectively (optimal concentration 1.48 g/l). The turbidity was reduced by over 96% for both high and low pollutants. Conclusions. The results of the present study indicate that cactus as a natural flocculant and reject rich in FeCl3 could be effectively used for the low-cost effective treatment of crude vegetable oil refinery rejects. Competing Interests. The authors declare no competing financial interests

scholarly journals A low cost, superhydrophobic and superoleophilic hybrid kaolin-based hollow fibre membrane (KHFM) for efficient adsorption–separation of oil removal from water

RSC Advances ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 2986-2995 ◽  
Author(s):  
Siti Khadijah Hubadillah ◽  
Preven Kumar ◽  
Mohd Hafiz Dzarfan Othman ◽  
A. F. Ismail ◽  
Mukhlis A. Rahman ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Sol Gel ◽  
Hollow Fibre ◽  
Oil Removal ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane

This paper outlines a low cost, high performance superhydrophobic/superoleophilic KHFM through a simple sol–gel grafted method using TEOS and MTES for efficient adsorption–separation of oil removal from water.

scholarly journals Oil Spill Sorber Based on Extrinsically Magnetizable Porous Geopolymer

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5641
Author(s):  
Fabíola da Silveira Maranhão ◽  
Fernando Gomes ◽  
Sérgio Thode ◽  
Diganta B. Das ◽  
Emiliane Pereira ◽  
...  
Keyword(s):  
Environmental Impacts ◽  
Oil Spill ◽  
Research Group ◽  
Environmental Problem ◽  
Low Cost ◽  
Viable Alternative ◽  
Oil Removal ◽  
Recovery Processes ◽  
Environmental Recovery ◽  
Cost Of Production

Environmental impacts are increasingly due to the human polluting activities. Therefore, there is a need to develop technologies capable of removing contamination and driving the impacted environment as close as possible to its inherent characteristics. One of the major problems still faced is the spill of oil into water. Therefore, to solve the environmental problem, this work shows the use of magnetically modified geopolymer materials as an oil remover from water with a magnet’s aid. The results obtained were outstanding since the average intrinsic oil removal capability (IORC) was 150 g/g. The presented IORC is the largest found in the materials produced by our research group, constituting an extremely encouraging result, mainly because of the ease of preparing the magnetic geopolymer system. Furthermore, the low cost of production and the material’s capability to be reused as filler of polymer or even cementitious matrices allows us to project that this nanocomposite can be widely used, constituting an economically viable alternative for more efficient environmental recovery processes.

Polydopamine-Based Surface Modification of Chlorella Microspheres for Multiple Environmental Applications

2021 ◽  
Vol 21 (5) ◽  
pp. 3065-3071
Author(s):  
Sihao Pan ◽  
Guanhua Huang ◽  
Hui Ding ◽  
Ke Wang ◽  
Hong Wang
Keyword(s):  
Water Pollution ◽  
Heavy Metal ◽  
Surface Modification ◽  
Large Scale ◽  
Low Cost ◽  
Functional Materials ◽  
Scale Production ◽  
Oil Removal ◽  
Directional Motion ◽  
Enhanced Adsorption

Towards addressing water pollution issues, the development of multifunctional chlorella with applications ranging from sensing pollutants to heavy metal and oil removal is described. The use of chlorella cells, which are widely abundant natural structures, leads to simple and low-cost mass production of effective functional materials. Bioinspired surface modification approaches mediated by polydopamine can endow chlorella with enhanced adsorption capacity for heavy metals, as well as superhydrophobic, fluorescence and magnetic properties according to the desired application. The resulting chlorella exhibits excellent heavy metal and oil removal ability, while magnetic propulsion and guidance allow directional motion over long distances for implementation in situ removal. Moreover, it is further demonstrated that chlorella can be used as a biosensor to detect metal ions by taking advantage of the fluorescence properties of carbon dots. Such use of chlorella provides a new way for the large-scale production of functional materials to tackle water pollution.

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