Crude Oil Sorption by Raw Cotton

Abstract

Since the recent Deepwater Horizon Gulf of Mexico oil spill, the need for environmentally friendly oil sorbents has intensified. This study deals with the sorption of crude oil by raw cotton, a biodegradable sorbent. To our best knowledge, the data related to crude oil sorption by unprocessed raw cotton and correlation with cotton characteristics such as micronaire, fineness, and maturity are unavailable. More importantly, our work quantifies the oil sorption (g/g) of low micronaire (immature) cotton. Results showed at the minimum level, low micronaire raw cotton has 30.5 g/g crude oil sorption capacity. Furthermore, the crude oil sorption capacity of low micronaire cotton was significantly higher than the sorption capacity of high micronaire cotton. Brunauer−Emmett−Teller (BET) surface area and environmental scanning electron microscopy analyses support the correlation between the quality characteristics of raw cotton and its oil sorption capacity. In contrast to synthetic sorbents, raw cotton with its high crude oil sorption capacity and positive environmental footprint make it an ecologically friendly sorbent for oil spill cleanups.

Recovery of oil from oil-in-water emulsion using biopolymers by adsorptive method

“…Studies were performed to assess how sorption rates depended on the concentrations of sorbate in solution and how rates were The percentage of oil removal can be calculated according to the following equation: (1) where, C i is initial oil concentration (mg/L), C e is equilibrium oil concentration (mg/L)…”

“…Foremost industrial sources of oily wastewater include petroleum refineries, metal manufacturing and machining and food processors. These industries have augmented the threats of oil pollution to the environment and their discharges to the natural environment, create a major ecological problem throughout the world [1]. Unlike free or floating oil spilled at sea, most of the industrial wastewaters contain oil-in-water emulsions among their basic contaminants.…”

Preparation of an Efficient Oil-Spill Adsorbent Based on Wheat Straw

“…After this 30 s period, the absorbed oil showed 13.67%, 19.98%, and 15.67% losses compared to the initial oil-saturated AWS, PWS, and RWS materials, respectively. The loss of oil could be explained by the reduction of capillary retention pressure between the fiber assembly due to the filled oil in the fiber lumen and the inter-fiber interstices (Abdullah et al 2010;Singh et al 2013). In addition, it was obvious that AWS exhibited the highest oil retention ability compared to RWS and PWS, which was related to the draining process of the oil.…”

“…In addition, it was obvious that AWS exhibited the highest oil retention ability compared to RWS and PWS, which was related to the draining process of the oil. The draining of oil in the extra-lumen occurs when the capillary pressure is insufficient to hold the weight of the oil (Singh et al 2013). The oil bridges formed among the bundles of PWS and RWS would have been easier to destabilize (Wang et al 2015).…”

Extraction of petrol products from water by magnetite-based sorbents

“…[4,5]. Серед приведеного переліку найбільш ефективним для фінішного очищення води від нафтопродуктів до слідових концентрацій можна вважати процес сорб-ції, котрий дозволяє видаляти з водного середовища не лише емульговані, а й розчинні нафтопродукти [6,7]. При цьому вирішальну роль в процесі очищен-ня відіграє сорбент, в якості котрого найчастіше за-стосовують активоване вугілля, природні дисперсні матеріали каолін та бентоніт, оксиди металів та інші речовини [8,9].…”