scholarly journals Physico-chemical Characteristics of Fine Nano-scaled Carbon Fibers from Bacterial Cellulose

2017 ◽  
Vol 2 (4) ◽  
pp. 453
Author(s):  
Jiji Swaminathan ◽  
K. Kadirvelu ◽  
Deepika Rajendran
Keyword(s):  
Bacterial Cellulose ◽  
Carbon Nanofibers ◽  
Three Dimensional ◽  
Cost Effective ◽  
Water Separation ◽  
Physico Chemical ◽  
Different Temperatures ◽  
Oil Water Separation ◽  
Oil Water ◽  
Nanoscale Fibers

<p class="p1">Recently, carbon nanofibers have gained immense attention in research due to its tremendous application. Here, this work highlights a simple, cost effective and reliable method to develop carbon nanofibers (CNF) from biomass. The biomass used is bacterial cellulose (BC) synthesized using <em>Acetobacter xylinus</em>. CNF was developed by freeze drying of BC followed by pyrolysis at different temperatures (300ºC - 900ºC). The conversions of BC to CNF were characterized using SEM, FTIR, TGA and XRD respectively. The results exhibit three dimensional, lightweight, fine nanoscale fibers with a diameter of 10nm which are tend to have hydrophobic and lipophilic characters, due to which it can be used in oil – water separation applications.<span class="Apple-converted-space"> </span></p>

scholarly journals A three-dimensional polyoxometalate/graphene aerogel as a highly efficient and recyclable absorbent for oil/water separation

2021 ◽  
Vol 36 (1) ◽  
pp. 189-197
Author(s):  
Sen Wang ◽  
Xiao Wang ◽  
Xiao-yu Shi ◽  
Cai-xia Meng ◽  
Cheng-lin Sun ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Graphene Aerogel ◽  
Water Separation ◽  
Highly Efficient ◽  
Oil Water Separation ◽  
Oil Water

scholarly journals Complex Aerogels Generated from Nano-Polysaccharides and Its Derivatives for Oil–Water Separation

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1593 ◽  
Author(s):  
Hajo Yagoub ◽  
Liping Zhu ◽  
Mahmoud H. M. A. Shibraen ◽  
Ali A. Altam ◽  
Dafaalla M. D. Babiker ◽  
...  
Keyword(s):  
Guar Gum ◽  
Corn Oil ◽  
Cellulose Nanofibers ◽  
Aqueous Media ◽  
Three Dimensional ◽  
Absorption Capacity ◽  
Water Contact ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

The complex aerogel generated from nano-polysaccharides, chitin nanocrystals (ChiNC) and TEMPO-oxidized cellulose nanofibers (TCNF), and its derivative cationic guar gum (CGG) is successfully prepared via a facile freeze-drying method with glutaraldehyde (GA) as cross-linkers. The complexation of ChiNC, TCNF, and CGG is shown to be helpful in creating a porous structure in the three-dimensional aerogel, which creates within the aerogel with large pore volume and excellent compressive properties. The ChiNC/TCNF/CGG aerogel is then modified with methyltrichlorosilane (MTCS) to obtain superhydrophobicity/superoleophilicity and used for oil–water separation. The successful modification is demonstrated through FTIR, XPS, and surface wettability studies. A water contact angle of 155° on the aerogel surface and 150° on the surface of the inside part of aerogel are obtained for the MTCS-modified ChiNC/TCNF/CGG aerogel, resulting in its effective absorption of corn oil and organic solvents (toluene, n-hexane, and trichloromethane) from both beneath and at the surface of water with excellent absorption capacity (i.e., 21.9 g/g for trichloromethane). More importantly, the modified aerogel can be used to continuously separate oil from water with the assistance of a vacuum setup and maintains a high absorption capacity after being used for 10 cycles. The as-prepared superhydrophobic/superoleophilic ChiNC/TCNF/CGG aerogel can be used as a promising absorbent material for the removal of oil from aqueous media.

Produced Water Handling Using Downhole Oil Water Separation Study Case Onshore & Offshore Fields Abu Dhabi

2021 ◽  
Author(s):  
Abdelhak Ladmia ◽  
Dr. Younes bin Darak Al Blooshi ◽  
Abdullah Alobedli ◽  
Dragoljub Zivanov ◽  
Myrat Kuliyev ◽  
...  
Keyword(s):  
Produced Water ◽  
Operating Cost ◽  
Cost Effective ◽  
Management Tool ◽  
Water Separation ◽  
Field Development ◽  
Effective Manner ◽  
Oil Water Separation ◽  
Oil Water

Abstract The expected profiles of the water produced from the mature ADNOC fields in the coming years imply an important increase and the OPEX of the produced and injected water will increase considerably. This requires in-situ water separation and reinjection. The objective of in-situ fluid separation is to reduce the cost of handling produced water and to extend the well natural flow performance resulting in increased and accelerated production. The current practice of handling produced water is inexpensive in the short term, but it can affect the operating cost and the recovery in the long term as the expected water cut for the next 10-15 years is forecasted to incease significantly. A new water management tool called downhole separation technology was developed. It separates oil and & gas from associated water inside the wellbore to be reinjected back into the disposal wells. The Downhole Oil Water Separation (DHOWS) Technology is one of the key development strategies that can reduce considerable amounts of produced water, improve hydrocarbon recovery, and minimize field development cost by eliminating surface water treatment and handling costs. The main benefits of DHOWS include acceleration of oil offtake, reduction of production cost, lessening produced water volumes, and improved utilization of surface facilities. In effect, DHOWS technologies require specific design criteria to meet the objectives of the well. Therefore, multi--discipline input data are needed to install an effective DHOWS with a robust design that economically outperforms and boosts oil and/or gas productions. This paper describes the fundamental criteria and workflow for selecting the most suitable DHOWS design for new and sidetracked wells to deliver ADNOC production mandates in a cost-effective manner while meeting completion requirements and adhering to reservoir management guidelines.

Shish–Kebab-Structured UHMWPE Coating for Efficient and Cost-Effective Oil–Water Separation

2020 ◽  
Vol 12 (52) ◽  
pp. 58252-58262
Author(s):  
Binbin Dong ◽  
Yahao Guo ◽  
Shuangjie Sun ◽  
Hao-Yang Mi ◽  
Ping He ◽  
...  
Keyword(s):  
Cost Effective ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

scholarly journals Controllable synthesis of pomelo peel-based aerogel and its application in adsorption of oil/organic pollutants

2019 ◽  
Vol 6 (2) ◽  
pp. 181823 ◽  
Author(s):  
Guangyu Shi ◽  
Yizhu Qian ◽  
Fengzhi Tan ◽  
Weijie Cai ◽  
Yuan Li ◽  
...  
Keyword(s):  
High Speed ◽  
Chemical Properties ◽  
Absorption Capacity ◽  
High Porosity ◽  
X Ray Diffraction ◽  
Water Separation ◽  
Physico Chemical ◽  
Wide Range ◽  
Oil Water Separation ◽  
Oil Water

Oil/water separation is a field of high significance as it might efficiently resolve the contamination of industrial oily wastewater and other oil/water pollution. In this paper, an environmentally-friendly hydrophobic aerogel with high porosity and low density was successfully synthesized with renewable pomelo peels (PPs) as precursors. Typically, a series of sponge aerogels (HPSA-0, HPSA-1 and HPSA-2) were facilely prepared via high-speed dispersion, freeze-drying and silanization with methyltrimethoxysilane. Indeed, the physical properties of aerogel such as density and pore diameter could be tailored by different additives (filter paper fibre and polyvinyl alcohol). Hence, their physico-chemical properties including internal morphology and chemical structure were characterized in detail by Fourier transform infrared, Brunauer–Emmett–Teller, X-ray diffraction, scanning electron microscope, Thermal gravimetric analyzer (TG) etc. Moreover, the adsorption capacity was further determined and the results revealed that the PP-based aerogels presented excellent adsorption performance for a wide range of oil products and/or organic solvents (crude oil 49.8 g g −1 , soya bean oil 62.3 g g −1 , chloroform 71.3 g g −1 etc.). The corresponding cyclic tests showed the absorption capacity decreased slightly from 94.66% to 93.82% after 10 consecutive cycles, indicating a high recyclability.

Surface Modification of Bacterial Cellulose Aerogels’ Web-like Skeleton for Oil/Water Separation

2015 ◽  
Vol 7 (13) ◽  
pp. 7373-7381 ◽  
Author(s):  
Huazheng Sai ◽  
Rui Fu ◽  
Li Xing ◽  
Junhui Xiang ◽  
Zhenyou Li ◽  
...  
Keyword(s):  
Surface Modification ◽  
Bacterial Cellulose ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

Facile and Green Route to Fabricate Bacterial Cellulose Membrane with Superwettability for Oil–Water Separation

2020 ◽  
Vol 4 (7) ◽  
pp. 2000042 ◽  
Author(s):  
Huazheng Sai ◽  
Zhiqiang Jin ◽  
Yutong Wang ◽  
Rui Fu ◽  
Yaxiong Wang ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Cellulose Membrane ◽  
Water Separation ◽  
Green Route ◽  
Bacterial Cellulose Membrane ◽  
Oil Water Separation ◽  
Oil Water

A three-dimensional porous Co@C/carbon foam hybrid monolith for exceptional oil–water separation

Nanoscale ◽  
2019 ◽  
Vol 11 (25) ◽  
pp. 12161-12168 ◽  
Author(s):  
Xiao Ge ◽  
Wenxiu Qin ◽  
Haimin Zhang ◽  
Guozhong Wang ◽  
Yunxia Zhang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Carbon Foam ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

A 3D porous Co@C/CF hybrid monolith and the corresponding oil-collecting device have been successfully fabricated for exceptional oil/water separation.

Sign in / Sign up

Export Citation Format

Share Document