Mycoremediation of Synthetic Dyes: An Insight into the Mechanism, Process Optimization and Reactor Design

Abstract In the present study, pectin-alginate-titania (PAT) composites were synthesized and the adsorptive removal behavior of methylene blue (MB) from aqueous solution, as a model of synthetic organic effluents, onto the prepared PAT composites were investigated by monitoring the effect of contact time, initial MB concentration, and temperature. The adsorption isotherm data were fitted well with the Freundlich isotherm model, suggesting the surface heterogeneity of the PAT composites and that the MB adsorption occurred on the active sites on multilayer surface of the composites. The adsorption kinetics of MB was demonstrated to be pseudo-second order, governed by two intraparticle diffusion rates, and the adsorption process was exothermic, spontaneous, and more disorder. The Langmuir isotherm model suggested that the maximum adsorption capacity of MB on the PAT composites was in the range of 435–637 mg g–1. In general, it increased with the TiO2 NPs content in the PAT composites, due most likely to the increase in surface area exposing more functional groups of the pectin and alginate to interact with the synthetic dye. The adsorptive removal of MB by the PAT composites was found to be more efficient compared with many other reported adsorbents, such as graphene oxide hybrids, pectin microspheres, magnetite-silica-pectin composites, clay-based materials, chemically treated minerals, and agricultural waste. The present study therefore demonstrated for the first time that PAT composites are not only promising to be utilized as an adsorbent in wastewater treatment, but also provide an insight into the adsorption mechanism of the synthetic dyes onto the biopolymers-titania composites. Graphic abstract Insight into the adsorption kinetics, mechanism, and thermodynamics of methylene blue from aqueous solution onto pectin-alginate-titania composite microparticles.

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Phycoremediation of Synthetic Dyes: An Effective and Eco-Friendly Algal Technology for the Dye Abatement

Journal of Chemistry ◽

10.1155/2021/9923643 ◽

2021 ◽

Vol 2021 ◽

pp. 1-14

Author(s):

Abate Ayele ◽

Deribe Getachew ◽

M. Kamaraj ◽

A. Suresh

Keyword(s):

Contact Time ◽

Conventional Treatment ◽

Treatment Method ◽

Agitation Speed ◽

Synthetic Dyes ◽

Algae Biomass ◽

Rapid Industrialization ◽

Negative Impacts ◽

Underlying Mechanisms ◽

Insight Into

Rapid industrialization leads to serious environmental hazards due to the increase in the release of pollutants into the environment. Industries that use synthetic dyes for different applications are a predominant source for dye contaminants by releasing the dye in wastewater with pretreatment or without treatment directly into the water bodies, making serious water pollution in the environment. Therefore, it is imperative to safeguard the environment from such contaminants and their associated negative impacts. The conventional treatment method that is used to treat dye-contaminated wastewater is generally costly and has a possibility to produce secondary metabolites. Due to the above problems, the biological method is preferable to treat effluent or dye-contaminated wastewater. Phycoremediation is an algae-based eco-friendly dye abatement technique from contaminated environments. This review highlights the phycoremediation of dyes and its underlying mechanisms along with the information on synthetic dyes, classification, hazardous effects, and other major techniques of dye abatement. This review provides a comprehensive insight into several influencing factors such as pH, temperature, contact time, the dose of algae biomass, and agitation speed, as well as functional groups involved in the phycoremediation process.

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Examination of Infrared Tomato Drying

International Journal of Engineering and Management Sciences ◽

10.21791/ijems.2019.1.38. ◽

2020 ◽

Vol 4 (1) ◽

pp. 303-309

Author(s):

Zsombor Várkonyi ◽

Viktória Sebesi ◽

Mária Örvös

Keyword(s):

Heat Source ◽

Process Optimization ◽

Radiation Power ◽

Market Demand ◽

Drying Process ◽

Moisture Variation ◽

Ratio Change ◽

Insight Into ◽

Over Time ◽

Sample Distance

Tomato is a highly perishable food, thus preservation is required to meet the continuous market demand compared to the unbalanced yearly production peak. The aim of this paper is to show a detailed insight into infraradiation based drying process. Furthermore, to widen the possible usage range of a well-known approximation method for describing the temporal moisture variation in function of process parameters. The mass decrease of tomato slices was examined, in function of specific radiation power, heat source and sample distance, in forced and natural airflow. Based on the results dimensionless moisture ratio change over time was fitted as an exponential function, which may be used in industrial drying process optimization.

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TiO2-Based Photocatalytic Process for Purification of Polluted Water: Bridging Fundamentals to Applications

Journal of Nanomaterials ◽

10.1155/2013/319637 ◽

2013 ◽

Vol 2013 ◽

pp. 1-14 ◽

Cited By ~ 11

Author(s):

Chuan Wang ◽

Hong Liu ◽

Yanzhen Qu

Keyword(s):

Process Optimization ◽

Water Purification ◽

Large Scale ◽

Advanced Oxidation Process ◽

Advanced Oxidation ◽

Reactor Design ◽

Polluted Water ◽

The Real ◽

Advanced Oxidation Technology ◽

Oxidation Technology

Recent years have witnessed a rapid accumulation of investigations on TiO2-based photocatalysis, which poses as a greatly promising advanced oxidation technology for water purification. As the ability of this advanced oxidation process is well demonstrated in lab and pilot scales to decompose numerous recalcitrant organic compounds and microorganism as well in water, further overpass of the hurdles that stand before the real application has become increasingly important. This review focuses on the fundamentals that govern the actual water purification process, including the fabrication of engineered TiO2-based photocatalysts, process optimization, reactor design, and economic consideration. The state of the art of photocatalyst preparation, strategies for process optimization, and reactor design determines the enhanced separation of photo-excited electron-hole (e-h) pairs on the TiO2surface. For the process optimization, the kinetic analysis including the rate-determining steps is in need. For large-scale application of the TiO2-based photocatalysis, economics is vital to balance the fundamentals and the applied factors. The fundamentals in this review are addressed from the perspective of a bridge to the real applications. This review would bring valuably alternative paradigm to the scientists and engineers for their associated research and development activities with an attempt to push the TiO2-based photocatalysis towards industrially feasible applications.

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Double-Tube Reactor Design and Process Optimization for On-Site Steam Methane Reforming Processes

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.0c02875 ◽

2020 ◽

Vol 59 (40) ◽

pp. 18028-18038

Author(s):

Jaewon Lee ◽

Hyungtae Cho ◽

Myungjun Kim ◽

Steve Hall ◽

Il Moon

Keyword(s):

Process Optimization ◽

Reactor Design ◽

Methane Reforming ◽

Steam Methane Reforming ◽

Steam Methane ◽

Tube Reactor

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Pembuatan Batik Alam Berbahan Tumbuhan Sekitar Rumah

PengabdianMu Jurnal Ilmiah Pengabdian kepada Masyarakat ◽

10.33084/pengabdianmu.v5i4.1151 ◽

2020 ◽

Vol 5 (4) ◽

pp. 343-350

Author(s):

Misrita Misrita ◽

Rosdiana Rosdiana ◽

Srie Rosmilawati ◽

Imam Qalyubi

Keyword(s):

Natural Resources ◽

Community Service ◽

Small And Medium Enterprises ◽

Natural Dyes ◽

Synthetic Dyes ◽

Plant Leaves ◽

Cultural Arts ◽

Medium Enterprises ◽

Design Motifs ◽

Insight Into

Batik is one of Indonesia's cultural arts, which has been integrated with Indonesian people since several centuries ago. However, so far, the batik produced still uses synthetic motifs and coloring, which can contribute to environmental pollution. Hence, people's interest in batik starts to diminish, so it is necessary to find breakthroughs in batik motifs and coloring, which are more environmentally friendly by using natural dyes. One of the natural dyes for batik is to use plant leaves that grow around the house, also called eco print, which is the activity of making leaves with specific patterns on a t-shirt, which produces motifs and colors obtained from the leaves. The target partners involved in community service activities are women's business groups in Palangka Raya, which are under the auspices of the Palangka Raya City Cooperative, Small and Medium Enterprises Agency, namely UKM Bawi Dayak Palangka Raya. This is because the batik produced so far still uses synthetic motifs and coloring. Assistance carried out for this group is to provide insight into knowledge and understanding of the importance of natural coloring and the danger of synthetic dyes. Build and encourage creativity informing design motifs and colors on fabric through the use of leaves that grow around the house. Outcome targets are t-shirt products that use leaves as motifs and natural dyes�introducing natural batik with the use of natural resources around.

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Differential Influence of Imidazolium Ionic Liquid on Cellulase Kinetics in Saccharification of Cellulose and Lignocellulosic Biomass Substrate

Applied Science and Engineering Progress ◽

10.14416/j.asep.2021.11.003 ◽

2021 ◽

Author(s):

Prapakorn Tantayotai ◽

Marttin Paulraj Gundupalli ◽

Elizabeth Jayex Panakkal ◽

Malinee Sriariyanun ◽

Kittipong Rattanaporn ◽

...

Keyword(s):

Ionic Liquid ◽

Rice Straw ◽

Process Optimization ◽

Critical Concentration ◽

Enzymatic Saccharification ◽

Imidazolium Ionic Liquid ◽

One Pot ◽

Cellulase Kinetics ◽

Positive Effect ◽

Insight Into

The effect of [Emim][OAc] on Celluclast 1.5 L, Accellerase 1500, and IL-tolerant (MSL2) cellulase during the saccharification of carboxymethylcellulose (CMC), Avicel (AV), rice straw (RS) was studied in one pot process (pretreatment and saccharification). The inhibition caused by [Emim][OAc] (0.5–2.0 M) with substrate loading (20–50 mg/mL) were also evaluated. In most cases, the inhibition mode of saccharification for CMC and AV was identified to be uncompetitive inhibition when the concentration of [Emim][OAc] was higher than 0.5 M. Under the influence of 0.5 M of [Emim][OAc], the Critical Concentration of Substrate (CCS) values of the Celluclast 1.5 L and Accellerase 1500 on CMC hydrolysis were determined to be at 26.59 and 33.65 mg/mL, respectively. Also, increasing in [Emim][OAc] concentration could increase in CCS values, suggesting the positive effect of [Emim][OAc] on the improvement of enzymatic saccharification. This study provides insight into the process optimization for integration of [Emim][OAc] in one pot process of biorefinery.

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Biological sulfuric acid transformation: Reactor design and process optimization

Biotechnology and Bioengineering ◽

10.1002/bit.260410304 ◽

1993 ◽

Vol 41 (3) ◽

pp. 303-315 ◽

Cited By ~ 54

Author(s):

Gerhard Stucki ◽

Kurt W. Hanselmann ◽

Richard A. Hürzeler

Keyword(s):

Sulfuric Acid ◽

Process Optimization ◽

Reactor Design

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