Treatment of toxic pollutants of purified terephthalic acid waste water: A review

Garg, Krishan Kishor; Prasad, B.

doi:10.1016/j.eti.2017.07.001

Cited by 29 publications

(10 citation statements)

References 117 publications

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“…The second largest use of acetic acid is in the production of terephthalic acid (TA) by liquid phase oxidation of p ‐xylene in the presence of acetic acid. Terephthalic acid is among the top 50 chemicals produced globally 146 . Terephthalic acid is one of the main building blocks of polyester, polyethylene terephthalate, and, consequently, for packaging resins and fibers 11,147 …”

Section: Application Of Acetic Acid and Economics Considerationmentioning

confidence: 99%

“…Terephthalic acid is among the top 50 chemicals produced globally. 146 Terephthalic acid is one of the main building blocks of polyester, polyethylene terephthalate, and, consequently, for packaging resins and fibers. 11,147 Acetic anhydride is an acetylation agent produced by the condensation of acetic acid.…”

Section: Application Of Acetic Acid and Economics Consideration Appli...mentioning

confidence: 99%

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Production and separation of acetic acid from pyrolysis oil of lignocellulosic biomass: a review

Sarchami

Batta

Berruti

2021

Biofuels Bioprod Bioref

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Bio‐oil from lignocellulosic biomass pyrolysis is a promising feedstock as a precursor for the production of transportation fuels and value‐added chemicals. The presence of significant concentrations of oxygen, water, and acids makes it difficult to use bio‐oil directly as a transportation fuel without costly upgrading. The acidity of pyrolysis liquids is mainly derived from volatile acids, such as acetic acid, causing chemical instability and corrosion. The extraction of acids from bio‐oil can therefore offer strategies for improved applications and economic value. Moreover, acetic acid is a valuable reagent and the building block for several commercially important chemicals. This review presents the results of important research related to the production of bio‐oil‐derived acetic acid. The discussion is intended to summarize the effect of biomass type and pretreatment method, pyrolysis processing conditions, and separation techniques on acetic acid production via pyrolysis. On this basis, acetic acid characterization techniques are also presented along with an overview of acetic acid applications and economic considerations. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

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Section: Application Of Acetic Acid and Economics Considerationmentioning

confidence: 99%

Section: Application Of Acetic Acid and Economics Consideration Appli...mentioning

confidence: 99%

Production and separation of acetic acid from pyrolysis oil of lignocellulosic biomass: a review

Sarchami

Batta

Berruti

2021

Biofuels Bioprod Bioref

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“…After verification, 2 cm was the optimal distance to be adopted in our following experiments. As the anode material is a prime consideration for EC technique [18], iron and aluminum plates were used as anode materials in this study. The results of COD removal efficiency with the two anode materials are shown in Figure 3.…”

Section: Effect Of Ec Parameters On Cod Removal Rate Of Mixed Wastewatermentioning

confidence: 99%

Electrocoagulation: A Promising Method to Treat and Reuse Mineral Processing Wastewater with High COD

Jing

Ren

Gao

et al. 2020

Water

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Mineral processing wastewater contains large amounts of reagents which can lead to severe environmental problems, such as high chemical oxygen demand (COD). Inspired by the wastewater treatment in such industries as those of textiles, food, and petrochemistry, in the present work, electrocoagulation (EC) is applied for the first time to explore its feasibility in the treatment of wastewater with an initial COD of 424.29 mg/L from a Pb/Zn sulfide mineral flotation plant and its effect on water reuse. Typical parameters, such as anode materials, current density, initial pH, and additives, were characterized to evaluate the performance of the EC method. The results showed that, under optimal conditions, i.e., iron anode, pH 7.1, electrolysis time 70 min, 19.23 mA/cm2 current density, and 4.1 g/L activated carbon, the initial COD can be reduced to 72.9 mg/L, corresponding to a removal rate of 82.8%. In addition, compared with the untreated wastewater, EC-treated wastewater was found to benefit the recovery of galena and sphalerite, with galena recovery increasing from 25.01% to 36.06% and sphalerite recovery increasing from 59.99% to 65.33%. This study confirmed that EC is a promising method for the treatment and reuse of high-COD-containing wastewater in the mining industry, and it possesses great potential for wide industrial applications.

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“…The longest degradation period (38 hours) was occurred in p-Tol degradation. p-Tol is defined as the most toxic content of PTA wastewater and mainly responsible about 25% of the total COD of the system (Garg and Prasad, 2017). But still, the HPLC results indicated that the aerobic granules have a high potential for using in PTA wastewater treatment systems.…”

Section: Discussionmentioning

confidence: 99%

A novel bioreactor design for enhanced aerobic granular sludge formation: effects of cationic polymer and boric acid addition

Karabey

Azbar

Özdemir

2020

Water & Environment J

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Compared to the conventional activated sludge, granular sludge has many advantages like good settling ability, high biomass retention and ability to withstand a high organic loading rate. In this study, the effects of boric acid and chitosan addition on granule formation was investigated in a novel Custom-made upflow aerobic granular sludge reactor for 22 days. According to the microscopic results, granulation in all reactors started at 5-7 days. The polymerase chain reactiondenaturing gradient gel electrophoresis (PCR-DGGE) results indicate the evolution of the bacterial community during the granulation process. In addition, high pressure liquid chromatography (HPLC) analysis showed that 100 mg/L of terephthalic acid (TA) was totally degraded in all reactors during 24 hours period. To date, chitosan was generally used in anaerobic granulation studies. Thus, there is little known about the role of chitosan in aerobic granulation. The findings in this study constitute important information about the process of granule formation and the factors that are essential to aerobic granulation.

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Treatment of toxic pollutants of purified terephthalic acid waste water: A review

Cited by 29 publications

References 117 publications

Production and separation of acetic acid from pyrolysis oil of lignocellulosic biomass: a review

Production and separation of acetic acid from pyrolysis oil of lignocellulosic biomass: a review

Electrocoagulation: A Promising Method to Treat and Reuse Mineral Processing Wastewater with High COD

A novel bioreactor design for enhanced aerobic granular sludge formation: effects of cationic polymer and boric acid addition

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