A novel system for zero-discharge treatment of high-salinity acetonitrile-containing wastewater: Combination of pervaporation with a membrane-aerated bioreactor

Xiang, Mei; Ding, Yang; Li, Pengpeng; Xu, Lijie; Wang, Yong; Guo, Zhongwei; Shen, Wentian; Yang, Yang; Wang, Yihan; Yao, Xiao; Xu, Yang; Liu, Yang; Shen, Yijun; Wu, Yuxin; Jiang, Chunhui; Xue, Cong

doi:10.1016/j.cej.2019.123338

Cited by 27 publications

(5 citation statements)

References 62 publications

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“…The possibility of bioconversion of the abovementioned perspective extractants, sulfurcontaining organic compounds, and other components that can get into the extracts from the treated hydrocarbon liquid fuel is a key issue for the development of the hybrid ODS processes. However, such a possibility is known to exist for all of the substances involved under certain conditions in an anaerobic bioreactor when BCs in the form of microbial consortia are used [24,[122][123][124][125].…”

Section: Choosing Reagents With the Minimal Inhibiting Effect On The Bcs And With The Potential Of Bioconversionmentioning

confidence: 99%

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

et al. 2021

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In this paper, the current advantages and disadvantages of using metal-containing nanocatalysts (NCs) for deep chemical oxidative desulfurization (ODS) of liquid fuels are reviewed. A similar analysis is performed for the oxidative biodesulfurization of oil along the 4S-pathway, catalyzed by various aerobic bacterial cells of microorganisms. The preferences of using NCs for the oxidation of organic sulfur-containing compounds in various oil fractions seem obvious. The text discusses the development of new chemical and biocatalytic approaches to ODS, including the use of both heterogeneous NCs and anaerobic microbial biocatalysts that catalyze the reduction of chemically oxidized sulfur-containing compounds in the framework of methanogenesis. The addition of anaerobic biocatalytic stages to the ODS of liquid fuel based on NCs leads to the emergence of hybrid technologies that improve both the environmental characteristics and the economic efficiency of the overall process. The bioconversion of sulfur-containing extracts from fuels with accompanying hydrocarbon residues into biogas containing valuable components for the implementation of C-1 green chemistry processes, such as CH4, CO2, or H2, looks attractive for the implementation of such a hybrid process.

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Section: Choosing Reagents With the Minimal Inhibiting Effect On The Bcs And With The Potential Of Bioconversionmentioning

confidence: 99%

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

et al. 2021

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“…As acetonitrile and water can form a mutually soluble binary azeotropic system (16% water, 84% acetonitrile, v/v), it is difficult to achieve complete separation for acetonitrile and water in acetonitrile-water mixed solution by common distillation methods [4]. Pervaporation is a membrane separation technology with the advantages of environmental protection and small footprint, which has been widely used in low-concentration acetonitrile separation [5][6][7][8]. To purify and recover acetonitrile from highconcentration acetonitrile wastewater, first distillation is used to obtain the 84% acetonitrile-water azeotrope.…”

Section: Introductionmentioning

confidence: 99%

“…However, removing the ARP from the WRP in industrial production is challenging. Hydrophobic membranes, such as polymers of intrinsic microporosity [5], polydimethylsiloxane [7,8,22], and polypropylene [20,21], are selective for the separation of the hydrophobic organic phase in permeation process. The hydrophobic organic phase can pass through the hydrophobic membranes, while the water phase cannot pass through the hydrophobic membranes.…”

Section: Introductionmentioning

confidence: 99%

A simple and low‐energy strategy for the separation of water and acetonitrile

Liu

Huang

Han

et al. 2023

J of Separation Science

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As acetonitrile is a widely used solvent for the chemical industry, the recovery of acetonitrile from acetonitrile wastewater is significant for both industrial cost reduction and environmental protection. In this article, a simple, low‐energy, and low‐cost strategy is proposed for the effective separation of acetonitrile from high‐concentration acetonitrile wastewater. The approach is based on a sequential combination of two steps: salt‐induced phase separation and hydrophobic filtration. The acetonitrile wastewater was first induced to split into two phases by salt, that is, the acetonitrile‐rich phase and the water‐rich phase, then the above two phases were poured into the hydrophobic filter paper funnel for the separation. It was shown that NaCl is a suitable salting‐out reagent, and that hydrophobic filter papers—obtained from modification by butyltrichlorosilane and octyltrichlorosilane were the optimal choice for hydrophobic filtration. The salt‐induced phase separation process is able to increase the volume fraction of acetonitrile in the acetonitrile‐rich phase up to 92%. The acetonitrile‐rich phase can pass through the hydrophobic filter paper, whereas the water‐rich phase was intercepted. The hydrophobic filter paper retained strong hydrophobicity and high acetonitrile‐separating capacity after 3 months storage, or upon immersion in acetonitrile‐water mixtures for 12 h, or applied for 25 consecutive separations.

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“…[6]. Despite not being appropriate for removing ions, ultrafiltration (UF) and microfiltration (MF) have received increasing attention in current years for decontamination of high-salinity organic wastewater for the purposes of removing microbes, particles and various organics [7][8][9]. Membrane fouling is a great concern which hampers the sustainable operation of a membrane system and increases the cost of treatment [10][11][12][13][14], although diverse fouling control methods have been proposed and developed to tackle fouling issues [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effects of High Salinity on Alginate Fouling during Ultrafiltration of High-Salinity Organic Synthetic Wastewater

Cai

Zhang

et al. 2021

Membranes

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Ultrafiltration is widely employed in treating high-salinity organic wastewater for the purpose of retaining particulates, microbes and macromolecules etc. In general, high-salinity wastewater contains diverse types of saline ions at fairly high concentration, which may significantly change foulant properties and subsequent fouling propensity during ultrafiltration. This study filled a knowledge gap by investigating polysaccharide fouling formation affected by various high saline environments, where 2 mol/L Na+ and 0.5-1.0 mol/L Ca2+/Al3+ were employed and the synergistic influences of Na+-Ca2+ and Na+-Al3+ were further unveiled. The results demonstrated that the synergistic influence of Na+-Ca2+ strikingly enlarged the alginate size due to the bridging effects of Ca2+ via binding with carboxyl groups in alginate chains. As compared with pure alginate, the involvement of Na+ aggravated alginate fouling formation, while the subsequent addition of Ca2+ or Al3+ on the basis of Na+ mitigated fouling development. The coexistence of Na+-Ca2+ led to alginate fouling formed mostly in a loose and reversible pattern, accompanied by significant cracks appearing on the cake layer. In contrast, the fouling layer formed by alginate-Na+-Al3+ seemed to be much denser, leading to severer irreversible fouling formation. Notably, the membrane rejection under various high salinity conditions was seriously weakened. Consequently, the current study offered in-depth insights into the development of polysaccharide-associated fouling during ultrafiltration of high-salinity organic wastewater.

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A novel system for zero-discharge treatment of high-salinity acetonitrile-containing wastewater: Combination of pervaporation with a membrane-aerated bioreactor

Cited by 27 publications

References 62 publications

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

Nanocatalysts for Oxidative Desulfurization of Liquid Fuel: Modern Solutions and the Perspectives of Application in Hybrid Chemical-Biocatalytic Processes

A simple and low‐energy strategy for the separation of water and acetonitrile

Effects of High Salinity on Alginate Fouling during Ultrafiltration of High-Salinity Organic Synthetic Wastewater

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