Bioadsorption by sugarcane bagasse for the reduction in oil and grease content in aqueous effluent

Abstract

Several techniques have been used to reduce the oil and grease content in aqueous streams; one excellent is bioadsorption. With a view to provide a sustainable method for the treatment of oily effluents, the aim of this study was to evaluate sugarcane bagasse as bioadsorbent to reduce the oil and grease content of aqueous effluents. Analysis of the material was performed, and the adsorption experiments were in a batch system, using a synthetic effluent. The results showed that the kinetic equilibrium occurred in 0.08 h of contact. The study of influence of pH of the aqueous phase and the temperature showed that the adsorption capacity was proportional to the pH value, but inversely proportional to the temperature. The adsorption isotherm was obtained at a temperature of 298.15 K using the Langmuir and LangmuirFreundlich models, and the maximum adsorption capacity obtained was 6.65 kg of hydrocarbon per kg of bioadsorbent. It was verified that sugarcane bagasse represents an excellent material for application in the treatment of oily aqueous effluents, since it is associated with low cost and a high adsorption capacity. The variation in the adsorption capacity observed as a function of pH of the aqueous phase was not found to be significant. This is an important characteristic of the material in terms of its industrial application, verifying the possibility for its implementation in any treatment process, demonstrating the great potential of sugarcane bagasse for use as a sustainable alternative in the reduction in oil and grease in aqueous effluents.

Biofiltration of formaldehyde, acetaldehyde, and acrolein from polluted airstreams using a biofilter

“…Since the microbial population and CO 2 production was low in the first day, the high performance may be due to the adsorptive effect of the packing material. The adsorption potential of different pollutants by compost, scoria or bagasse have been proved . After the first day (from day 1 to 4), RE gradually decreased, and was reduced to a minimum of 31.4% on the 4th day.…”

“…The adsorption potential of different pollutants by compost, scoria or bagasse have been proved. [42][43][44] After the first day (from day 1 to 4), RE gradually decreased, and was reduced to a minimum of 31.4% on the 4th day. This may be due to saturation of the adsorbent capacity of the packing materials.…”

Avaliação do emprego de casca de eucalipto na biossorção de hidrocarbonetos leves de petróleo contaminante em corpos hídricos simulados

“…Souza et al [7] destacam que efluentes contaminados por derivados de petróleo, como águas residuais da indústria de corantes e tintas, também são potenciais poluentes do meio ambiente, e a remoção desses compostos orgânicos tem se apresentado como grande desafio tecnológico. BONI et al [8], que utilizaram bagaço de cana-de-açúcar para recuperação de efluente aquoso contaminado por derivados de petróleo, ressaltam que dentre variadas técnicas empregadas para a remoção de substâncias orgânicas tóxicas em corpos hídricos, a adsorção é a melhor opção especialmente em virtude de sua facilidade de operação e universalidade. No ramo da adsorção, uma alternativa que se destaca na remoção de óleos e graxas é a biossorção, termo que se refere ao tratamento de correntes aquosas com o emprego de biomassas encontradas na natureza ou provenientes de algum processo industrial.…”

“…O uso de eucalipto e seus resíduos provenientes da atividade de silvicultura são comumente reportados na literatura principalmente para o emprego na adsorção de corantes orgânicos [14,15,16] e de metais pesados [17,18,19,20,21]. Todavia, pouco se tem elucidado a respeito da capacidade desta biomassa em adsorver hidrocarbonetos leves de petróleo, como aqueles oriundos de combustíveis, mesmo se tratando de um material lignocelulósico [22], cujas características hidrofóbicas o apontam como promissor adsorvente de compostos orgânicos apolares [8].…”

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

“…In recent years, natural fibers have been shown to have many advantageous properties for oil remediation work; in particular, such materials are biodegradable, renewable, and low in cost (Alemdar and Sain 2008). Natural fibers have attracted a broad interest in current research on hydrophobic treatments, and exemplary studies have focused on oil-adsorption materials such as kapok filters (Huang and Lim 2006), corn stalk (Husseien et al 2009), cotton (Wang et al 2015), pomelo peel , rice husk (Kumagai et al 2007), sugarcane bagasse (Boni et al 2016), and sisal (Robinson et al 2002). Natural fibers show commendable oil-absorbing performance, with potentially wide applications.…”