Oil removal from aqueous state by natural fibrous sorbent: An overview

Abstract

The threat of oil pollution increases with the expansion of oil exploration and production activities, as well as the industrial growth around the world. The study on the treatment of oily wastewater is a critical issue to the environmental protection as oil caused problems to the wastewater treatment facilities. Although oil particles can efficiently be removed by advanced technologies, the treatments are usually expensive and difficult to maintain. Adsorption and coalescence filtration are promising choice of treatment for its simplicity, effectiveness, and feasibility when appropriate sorbent is used. This review discusses the recent papers on the use of natural fibrous sorbent for removal of oil from wastewater, and its current development. With their excellent oil removal properties, environmental friendliness, easy availability, and feasibility, natural fibrous sorbents are an attractive alternative for oily wastewater treatment.

Application of Mineral Sorbents for Removal of Petroleum Substances: A Review

“…Mineral sorbents are poured onto a (land-based) oil spill, spread onto the surface mechanically (using a brush), allowed to absorb the substance, and are then collected together with the absorbed substance and transferred for recycling. They are not generally preferred for the removal of oil spills from water surfaces because of their low buoyancy, and low oil absorbability comparable to polymers or natural organic sorbents [34]. However, their modification with organic compounds are reported as suitable for water media.…”

“…The literature also describes other sorbents of natural origin from agricultural and/or processing wastes, such as rice husk, various types of plant shells and plant waste, kapok and many others [34][35][36][37][38]. Natural organic adsorbents are considered to be effective, inexpensive (although this is not universally true), easy available and environmentally friendly.…”

Micro- and nanoporous materials capable of absorbing solvents and oils reversibly: the state of the art

“…The aim of these innovations is to produce absorbents based on cheap and commercially available natural products. This area can be divided into two large groups, natural absorbents (Abdelwahab 2014; Behnood et al 2013;Chen et al 2013;Ifelebuegu et al 2015;Machado et al 2006;Muhammad et al 2012;Rotar et al 2014;Ribeiro et al 2003;Sayyad Amin et al 2015;Wahi et al 2013;Zadaka-Amir et al 2013) and natural-based absorbent products (Fu and Chung 2011;Galblaub et al 2016;Raj and Joy 2015;Kudaybergenov and Ongarbayev 2012;Nwadiogbu et al 2016;Okiel et al 2011;Uzunov et al 2012;Wang et al 2013;Zang et al 2015;Zhao et al 2011). Natural absorbents are those that can be obtained in nature and are used without modifying their hydrophobicity properties, absorption capacity, buoyancy, etc.…”

Desenvolvimento De Materiais Sorventes a Partir De Fibras Vegetais Na Contenção E Remediação De Derramamentos De Petróleo: Potencial De Sorção Do Bagaço Da Cana-De-Açúcar

“…Seu destaque reside principalmente na utilização de materiais orgânicos, uma vez que estes são sorventes eficientes e de baixo custo (Rajakovic-Ognjanovi et al, 2008). Atualmente, há diversas pesquisas que analisam o potencial de fibras naturais como sorventes de hidrocarbonetos, bem como os fatores que influenciam sua capacidade sortiva, sejam estas in-natura ou tratadas quimicamente (Wahi et al, 2013e Wang et al, 2013 O bagaço da cana-de-açúcar é alvo de investigações e tem se destacado como um sorvente promissor, uma vez que sua atividade adsortiva/absortiva para com substâncias apolares à temperatura ambiente é bastante favorável (Brandão et al 2010). O bagaço é gerado durante a fabricação de açúcar e etanol a partir da cana-de-açúcar, sendo um elemento residual da moagem da cana.…”