scholarly journals Biochar from Waste Derived Fuels as Low-Cost Adsorbent for Waste Hydrocarbons

2020 ◽  
Vol 24 (3) ◽  
pp. 174-187
Author(s):  
Dmitrijs Porsnovs ◽  
Linda Ansone-Bertina ◽  
Jorens Kviesis ◽  
Dace Âriņa ◽  
Maris Klavins
Keyword(s):  
Treatment Approach ◽  
Low Cost ◽  
Oily Wastewater ◽  
High Quality ◽  
Sorption Behaviour ◽  
Refuse Derived Fuel ◽  
Washing Process ◽  
Oily Wastewater Treatment ◽  
Refuse Derived Fuels ◽  
Sorption Media

AbstractThe aim of this study is to prove technical feasibility of combined refuse derived fuel (RDF) torrefaction and oily wastewater treatment approach by using RDF derived biochar as a sorption media. Biochars prepared from refuse derived fuels in torrefaction, carbonization and pyrolysis modes were analysed as fuels and as hydrocarbon sorbents. Changes of elemental composition and properties of material during thermal treatment and subsequent washing process have been analysed. Experimental evaluation of sorption behaviour of toluene and diesel fuel on obtained biochar performed. Our results show that torrefaction/carbonization of RDF coupled with the subsequent washing of biochar is a method allowing to overcome absolute majority of the quality problems of waste derived fuels, including the most important one: high chlorine content. In spite the fact that optimal temperatures for upgrading waste derived fuels and to produce high quality sorbent does not coincide, technically it is possible to combine the washing of torrefied/carbonized waste derived fuels with the treatment of wastewaters that are polluted with oils or hydrocarbons.

scholarly journals Oily wastewater treatment by adsorption–membrane filtration hybrid process using powdered activated carbon, natural zeolite powder and low cost ceramic membranes

2017 ◽  
Vol 76 (4) ◽  
pp. 895-908 ◽  
Author(s):  
Yaser Rasouli ◽  
Mohsen Abbasi ◽  
Seyed Abdollatif Hashemifard
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Natural Zeolite ◽  
Low Cost ◽  
Ceramic Membranes ◽  
Powdered Activated Carbon ◽  
Hybrid Process ◽  
Oily Wastewater ◽  
Alumina Membranes ◽  
Oily Wastewater Treatment

In this research, four types of low cost and high performance ceramic microfiltration (MF) membranes have been employed in an in-line adsorption–MF process for oily wastewater treatment. Mullite, mullite-alumina, mullite-alumina-zeolite and mullite-zeolite membranes were fabricated as ceramic MF membranes by low cost kaolin clay, natural zeolite and α-alumina powder. Powdered activated carbon (PAC) and natural zeolite powder in concentrations of 100–800 mg L−1 were used as adsorbent agent in the in-line adsorption–MF process. Performance of the hybrid adsorption–MF process for each concentration of PAC and natural zeolite powder was investigated by comparing quantity of permeation flux (PF) and total organic carbon (TOC) rejection during oily wastewater treatment. Results showed that by application of 400 mg L−1 PAC in the adsorption–MF process with mullite and mullite-alumina membranes, TOC rejection was enhanced up to 99.5% in comparison to the MF only process. An increasing trend was observed in PF by application of 100–800 mg L−1 PAC. Also, results demonstrated that the adsorption–MF process with natural zeolite powder has higher performance in comparison to the MF process for all membranes except mullite-alumina membranes in terms of PF. In fact, significant enhancement of PF and TOC rejection up to 99.9% were achieved by employing natural zeolite powder in the in-line adsorption–MF hybrid process.

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 Turning Tissue Waste into High-Performance Microfiber Filters for Oily Wastewater Treatment

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 378
Author(s):  
Gaoliang Wei ◽  
Jun Dong ◽  
Jing Bai ◽  
Yongsheng Zhao ◽  
Chuanyu Qin
Keyword(s):  
Contact Angle ◽  
Wastewater Treatment ◽  
High Performance ◽  
Low Cost ◽  
Oily Wastewater ◽  
Water Contact ◽  
Oil Mixtures ◽  
Oil Water ◽  
Oily Wastewater Treatment ◽  
Underwater Superoleophobicity

Developing low-cost, durable, and high-performance materials for the separation of water/oil mixtures (free oil/water mixtures and emulsions) is critical to wastewater treatment and resource recovery. However, this currently remains a challenge. In this work, we report a biopolymer microfiber assembly, fabricated from the recovery of tissue waste, as a low-cost and high-performance filter for oily wastewater treatment. The microfiber filters demonstrate superhydrophilicity (water contact angle of 28.8°) and underwater superoleophobicity (oil contact angle of 154.2°), and thus can achieve separation efficiencies of >96% for both free oil/water mixtures and surfactant-stabilized emulsions even in highly acidic (pH 2.2)/alkaline (pH 11.8) conditions. Additionally, the prepared microfiber filters possess a much higher resistance to oil fouling than conventional membranes when filtering emulsions, which is because the large-sized 3D interconnected channels of the filters can delay the formation of a low-porosity oil gel layer on their surface. The filters are expected to practically apply for the oily wastewater treatment and reduce the amount of tissue waste entering the environment.

scholarly journals Low-cost clay-based membranes for oily wastewater treatment

2014 ◽  
Vol 122 (1429) ◽  
pp. 788-794 ◽  
Author(s):  
Jung-Hye EOM ◽  
Young-Wook KIM ◽  
Sung-Ho YUN ◽  
In-Hyuck SONG
Keyword(s):  
Wastewater Treatment ◽  
Low Cost ◽  
Oily Wastewater ◽  
Oily Wastewater Treatment

Novel silica sand hollow fibre ceramic membrane for oily wastewater treatment

2021 ◽  
Vol 9 (1) ◽  
pp. 104975
Author(s):  
Saber Abdulhamid Alftessi ◽  
Mohd. Hafiz Dzarfan Othman ◽  
Mohd. Ridhwan Adam ◽  
Twibi Mohamed Farag ◽  
Ahmad Fauzi Ismail ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Ceramic Membrane ◽  
Hollow Fibre ◽  
Silica Sand ◽  
Oily Wastewater ◽  
Oily Wastewater Treatment

scholarly journals Urban Air Quality Modeling Using Low-Cost Sensor Network and Data Assimilation in the Aburrá Valley, Colombia

Atmosphere ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 91
Author(s):  
Santiago Lopez-Restrepo ◽  
Andres Yarce ◽  
Nicolás Pinel ◽  
O.L. Quintero ◽  
Arjo Segers ◽  
...  
Keyword(s):  
Air Quality ◽  
Data Assimilation ◽  
Transport Model ◽  
Cost Model ◽  
Low Cost ◽  
Model Performance ◽  
Monitoring Network ◽  
Correlation Factor ◽  
Chemical Transport Model ◽  
High Quality

The use of low air quality networks has been increasing in recent years to study urban pollution dynamics. Here we show the evaluation of the operational Aburrá Valley’s low-cost network against the official monitoring network. The results show that the PM2.5 low-cost measurements are very close to those observed by the official network. Additionally, the low-cost allows a higher spatial representation of the concentrations across the valley. We integrate low-cost observations with the chemical transport model Long Term Ozone Simulation-European Operational Smog (LOTOS-EUROS) using data assimilation. Two different configurations of the low-cost network were assimilated: using the whole low-cost network (255 sensors), and a high-quality selection using just the sensors with a correlation factor greater than 0.8 with respect to the official network (115 sensors). The official stations were also assimilated to compare the more dense low-cost network’s impact on the model performance. Both simulations assimilating the low-cost model outperform the model without assimilation and assimilating the official network. The capability to issue warnings for pollution events is also improved by assimilating the low-cost network with respect to the other simulations. Finally, the simulation using the high-quality configuration has lower error values than using the complete low-cost network, showing that it is essential to consider the quality and location and not just the total number of sensors. Our results suggest that with the current advance in low-cost sensors, it is possible to improve model performance with low-cost network data assimilation.

Saline oily wastewater treatment using Lallemantia mucilage as a natural coagulant: Kinetic study, process optimization, and modeling

2021 ◽  
Vol 163 ◽  
pp. 113326
Author(s):  
Moein Besharati Fard ◽  
Donya Hamidi ◽  
Javad Alavi ◽  
Reza Jamshidian ◽  
Alireza Pendashteh ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Kinetic Study ◽  
Process Optimization ◽  
Oily Wastewater ◽  
Natural Coagulant ◽  
Study Process ◽  
Oily Wastewater Treatment
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