Journal of the Taiwan Institute of Chemical Engineers最新文献_第9页

Microalgae cultivation in stabilized landfill leachate for simultaneous treatment and biomass production 稳定垃圾渗滤液中微藻的培养及其同时处理和生物质生产

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2023.105068

Li Wen Liew , Mohammed JK Bashir , Pey Yi Toh , Motasem Y.D. Alazaiza , Salem S. Abu Amr , Kuan Shiong Khoo , Ratchaprapa Raksasat , Jun Wei Lim

Background

The high toxicity of landfill leachate has motivated to an investigation of economical and ecological treatment prior releasing into environment. Recently, microalgae have emerged as an alternative method due to its ability to recover nutrient and potential for bio-fuel production. However, the high concentrations of inhibitory compounds and ammoniacal nitrogen in young landfill leachates require high dilutions for microalgae to thrive. Hence, this study aims to evaluate the performance of microalgae by using stabilized landfill leachate with lower to no dilutions in nutrient removal, biomass and lipid production.

Methods

Leachate concentrations of 33, 44, 66, 89 and 100 v/v% were initially treated with the microalgae C. vulgaris. Parameters of chemical oxygen demand (COD), ammoniacal nitrogen (NH₃–N), orthophosphate (PO₄³⁻), total phosphorus (TP) and colour removal were evaluated. Cost analysis was conducted to evaluate the economical appropriateness.

Significant findings

The highest removals were achieved at 43.67% of COD, >97% of NH₃–N, 79.26% of PO₄³⁻, 77.64% of TP and 44.04% of colour. Highest biomass yield obtained was 220 mg/L by 89 v/v% of leachate concentration with 8.14% of lipid yield. Cost of treatment was calculated to be ∼$0.02 per m³ leachate. The feasibility of stabilized landfill leachate treatment without any dilutions using microalgae was attained as they can survive amidst this condition, perform nutrient removals, and produce biomass simultaneously.

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引用次数: 0

A comprehensive review on tailoring factors of porous bismuth oxyhalide photocatalysts for wastewater treatment application 多孔氧化卤化铋光催化剂在废水处理中的应用

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2023.105234

Prasenjit Kar , Govindasamy Sathiyan , K.E. Vivekanandan , Geetha Venkatesan , Govindasamy Siva , Ramesh Subramani , Sabariswaran Kandasamy

Background

Photocatalysis is a green, environmentally friendly approach for converting organic contaminants into harmless byproducts. Especially, Bismuth oxyhalides (BiOX, where X = Cl, Br and I) have emerged as promising photocatalysts for wastewater treatment due to their layered-by-layered structure, strong chemical stability and nontoxicity in compare to other metal oxides, which makes the photocatalyst advantageous for photocatalytic application.

Methods

This review provides an overview of recent developments in the synthesis and application of BiOX-based porous photocatalysts for the removal of organic contaminants from wastewater. Firstly, morphology-controlled synthesis of BiOX in degradation of organic contaminants. Then, modulation of electronic structure through doping, facet engineering and surface engineering has been highlighted for better photocatalytic applications. Furthermore, fabrication of diverse heterojunctions and co-catalyst loading upon BiOX are introduced, which can vary photocatalytic activity towards the degradation of organic contaminants.

Significant findings

Finally, this review ended on the future trend and prospects of BiOX for the creation of potential high-performance photocatalysts in the near future. The porous structure of BiOX improved photocatalytic activity, pollutant degradation efficiency, visible light response charge carrier separation, and stability. Overall, bismuth oxyhalide photocatalysts have a lot of potential for effective and long-term wastewater treatment, and their development represents an important step towards addressing the global water pollution crisis.

光催化是一种绿色环保的将有机污染物转化为无害副产品的方法。特别是氧化卤化铋(bioxx，其中X = Cl, Br和I)由于其层状结构，与其他金属氧化物相比具有较强的化学稳定性和无毒性，使得光催化剂在光催化应用中具有优势，成为废水处理中很有前途的光催化剂。方法综述了生物氧基多孔光催化剂的合成及其在去除废水中有机污染物方面的应用进展。首先，形态控制合成生物降解有机污染物。然后，通过掺杂、facet工程和表面工程来调制电子结构以获得更好的光催化应用。此外，还介绍了不同异质结的制备和负载在BiOX上的共催化剂，它们可以改变对有机污染物降解的光催化活性。最后，综述了生物氧化物在未来的发展趋势，展望了生物氧化物在高性能光催化剂领域的应用前景。BiOX的多孔结构提高了光催化活性、污染物降解效率、可见光响应、载流子分离和稳定性。综上所述，氧化卤化铋光催化剂具有长期有效处理废水的潜力，其发展是解决全球水污染危机的重要一步。

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引用次数: 0

Recent developments in moving bed biofilm reactor (MBBR) for the treatment of phenolic wastewater -A review 移动床生物膜反应器（MBBR）处理酚类废水的最新进展 - 综述

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2024.105517

Zishan Aslam , Pervez Alam , Raisul Islam , Afzal Husain Khan , Hasara Samaraweera , Athar Hussain , Tasneem Imtiyaz Zargar

Background

Phenol, a toxic and carcinogenic compound found in industrial effluent, poses a severe threat to the environment and aquatic life. Conventional methods such as physio-chemical techniques have limitations in efficiency, cost, and sustainability, leading to the development of advanced hybrid approaches like the Moving Bed Biofilm Reactor (MBBR) to treat phenols.

Review method

In this study, we aimed at an in-depth review of MBBR for the remediation of phenolic wastewater at an industrial scale. The review uses a methodology that involves a comparative analysis of various conventional methods, including activated sludge process (ASP), sequencing batch biofilm reactor (SBBR), Fluidized Bed Biofilm Rector (FBBR), and trickling filter (TF) with MBBR, to determine their efficacy in phenol degradation. In this context, a thorough bibliometric assay of MBBR is carried out to understand the recent publication trends. The study also examines the impact of different types and shapes of bio-carriers and their filling ratios on phenol biodegradation.

Significant finding

The present work demonstrates the feasibility of using an aerobic MBBR along with a Fenton-like system (advanced oxidation processes) to treat phenolic effluent LCCA is discussed for selected treatment methods for assessing the sustainability aspects. In light of recent advancements, future research endeavors should prioritize the refinement and optimization of MBBR systems to strengthen their efficiency and sustainability, thus paving the way for a greener and cleaner future.

{"title":"Recent developments in moving bed biofilm reactor (MBBR) for the treatment of phenolic wastewater -A review","authors":"Zishan Aslam , Pervez Alam , Raisul Islam , Afzal Husain Khan , Hasara Samaraweera , Athar Hussain , Tasneem Imtiyaz Zargar","doi":"10.1016/j.jtice.2024.105517","DOIUrl":"10.1016/j.jtice.2024.105517","url":null,"abstract":"<div><h3>Background</h3><div>Phenol, a toxic and carcinogenic compound found in industrial effluent, poses a severe threat to the environment and aquatic life. Conventional methods such as physio-chemical techniques have limitations in efficiency, cost, and sustainability, leading to the development of advanced hybrid approaches like the Moving Bed Biofilm Reactor (MBBR) to treat phenols.</div></div><div><h3>Review method</h3><div>In this study, we aimed at an in-depth review of MBBR for the remediation of phenolic wastewater at an industrial scale. The review uses a methodology that involves a comparative analysis of various conventional methods, including activated sludge process (ASP), sequencing batch biofilm reactor (SBBR), Fluidized Bed Biofilm Rector (FBBR), and trickling filter (TF) with MBBR, to determine their efficacy in phenol degradation. In this context, a thorough bibliometric assay of MBBR is carried out to understand the recent publication trends. The study also examines the impact of different types and shapes of bio-carriers and their filling ratios on phenol biodegradation.</div></div><div><h3>Significant finding</h3><div>The present work demonstrates the feasibility of using an aerobic MBBR along with a Fenton-like system (advanced oxidation processes) to treat phenolic effluent LCCA is discussed for selected treatment methods for assessing the sustainability aspects. In light of recent advancements, future research endeavors should prioritize the refinement and optimization of MBBR systems to strengthen their efficiency and sustainability, thus paving the way for a greener and cleaner future.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 105517"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141029763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular docking analysis of mosquito ribosomal protein in selenium nanoparticle bio-synthesis: Implications for pest and pathogen mitigation

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2024.105602

Chandhirasekar Kandasamy , Balamuralikrishnan Balasubramanian , Palanisamy Prakash , Rathinasamy Baskaran , Hesam Kamyab , Shreeshivadasan Chelliapan , Nareshkumar Arjunan

Background

Insects, rich in diverse proteins, are crucial in nanoparticle biofabrication. This study explores mosquito proteins' potential to reduce selenium ions and produce Selenium nanoparticles (SeNPs).

Methods

Mosquito larval protein composition was determined via liquid chromatography-mass spectrometry (LC-MS). Molecular docking validated cytoskeletal proteins' efficacy, notably 40S ribosomal protein S7 (binding energy: -6.23) and β-tubulin (binding energy: -5.94), in facilitating selenium ion conversion to SeNPs. SeNPs, mediated by these proteins, were characterized using Ultra Violet-visible spectroscopy, revealing a peak at 295 nm. FT-IR analysis identified biomolecules responsible for capping SeNPs and converting selenious acid to SeNPs.

Significant findings

LC-MS detected β-tubulin (1 peptide, 76 amino acids, 8.2 kDa) and 40S ribosomal protein S7 (2 peptides, 192 amino acids, 22.1 kDa). The FT-IR analysis showed peaks at 3420.89 (OH stretch), 2928.35 (aromatic CH stretch), 2344.02 (CC alkynes stretches), etc. X-Ray Diffraction confirmed SeNPs' crystalline structure. Scanning electron microscopy and transmission electron microscopy revealed smooth-surfaced SeNPs in spherical and rod-shaped forms. SDS PAGE analysis post-SeNPs synthesis confirmed 40S ribosomal protein S7 and β-tubulin presence. SeNPs exhibited antibacterial, anti-biofilm, antioxidant, photocatalytic, and insecticidal activities. Median lethal concentrations were 17.674 μg/mL for Culex quinquefasciatus, 31.117 μg/mL for Aedes aegypti, and 81.95 μg/mLfor R. dominica at 48 h. SeNPs suppressed S. aureus biofilm by 33.06 ± 8.26 % and E. coli by 13.8 ± 3.63 %. Vero cells showed no harm at 250 µg/mL SeNPs. At 100 μg/mL, SeNPs exhibited 52.94 % free radical scavenging, compared to 74 % for ascorbic acid. Protein-mediated nanoparticle preparation is favoured for biomedical applications due to ease of synthesis, eco-friendliness, conjugation capability, simple preparation, and utilization of pests.

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引用次数: 0

Impact of nitrogen and sulfur fertilizers on leaching behavior of heavy metals from aquifer sediments to groundwater 氮肥和硫肥对含水层沉积物中重金属向地下水淋溶行为的影响

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2023.105056

Kaptan Singh , Rajesh Singh , Govind Pandey

Background

The groundwater of the Bathinda district of Punjab is contaminated with heavy metals, nitrate (NO₃), and sulfate (SO₄) exceeding the BIS limits for drinking water in many areas. The article attempts to understand the role of fertilizers, nitrate and sulfate, in the mobilization of heavy metals from the aquifer minerals.

Method

Heavy metal mobilization from aquifer sediments was studied through batch experiments using artificial groundwater (AGW) with varying concentrations of NO₃ and SO₄. For actual field conditions, column experiments were conducted with artificial groundwater containing 50 ppm NO₃ as mobile phase and 1 ml/minute flow rate. The leached metal ions from the sediments were analyzed with ICP-MS.

Significant findings

It was found that compared to the AGW without NO₃ and SO₄, the heavy metal mobilization potential of AGW with NO₃ and SO₄ was significantly enhanced. The presence of nitrate significantly influenced the leaching of Cr, Co, Ni, Zn, and Hg, moderately affected the mobilization of As, and least impacted the mobilization of Fe, Mn, Cu, Cd, Pb, and U. An increase in leaching of Cr, Mn, Ni, Zn, As, and U was observed with the increase in SO₄ concentration from 0 to 400 ppm, however, drastic reduction was observed with SO₄ concentration of 500 ppm indicating high concentration of SO₄ is posing an inhibitory action. The concentration of Cr, Fe, Co, Ni, Cu, Zn, Se, and Pb were significantly positively correlated indicating similar processes driving the mobilization of these metals. To reduce the mobilization of toxic heavy metals from the aquifer sediments, the NO₃ and SO₄ from the wastewater and agricultural run-off should be removed/reduced to the extent possible through optimized fertilizer usage, use of organic fertilizers, and treating the wastewater before discharging in the environment.

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引用次数: 0

New insights of g-C3N4/Bi2WO6 nanocomposite surface assembled on PVDF hybrid membrane for the treatment of pirimicarb pesticides PVDF杂化膜上组装g-C3N4/Bi2WO6纳米复合表面处理吡虫威农药的新见解

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2023.105136

S.A. GokulaKrishnan , G. Arthanareeswaran , Shiva V Prasad , Wei-Mon Yan , Thangavel Sangeetha , J. Sashank Raman , V. Ponnusami

Background

Pirimicarb, a commercially used insecticide, contains carbamate, which affects the nervous system of insects and living organisms, thus inhibiting their growth and increasing the production of crops. However, it has an impact on the ecosystem of groundwater by permeating the soil profile.

Methods

The g-C₃N_4, Bi₂WO₆ & g-C₃N₄/Bi₂WO₆ nanocomposites were synthesized by hydrothermal method and grafted on the PVDF membranes via in-situ polymerization. The pirimicarb wastewater of different pH 5,7 & 9 was synthetically prepared, and the performance of the membrane was tested to study the reduction and photodegradation of as-prepared pirimicarb wastewater.

Significant

The surface energy had increased from 88.65 to 145.1 mJ/m², g-C₃N₄/ Bi₂WO₆ nanocomposites on the PVDF membranes. The water contact angle of the membrane ranges from 57.9° to 37.7°, indicating that the membranes have higher hydrophilic characteristics. The water permanence is in the decreasing order of M1 (PAA/PVDF)> M6 (0.5wt% g-C₃N₄/Bi₂WO₆/PAA/PVDF)> M3 (1wt% Bi₂WO₆/PAA/PVDF)> M7 (1wt% g-C₃N₄/Bi₂WO₆/PAA/PVDF)> M4 (0.5wt% g-C₃N₄/PAA/PVDF)> M2 (0.5wt% Bi₂WO₆/PAA/PVDF)> M5 (1wt% g-C₃N₄/PAA/PVDF)> Neat (PVDF). The photodegradation studies stated that upon adding nanocomposites such as g-C₃N₄/Bi₂WO₆, the membranes undergo degradation of 80% at pH 5, which is higher than the PVDF/PAA (M1) membrane.

吡立威是一种商业使用的杀虫剂，含有氨基甲酸酯，它会影响昆虫和生物的神经系统，从而抑制它们的生长，增加作物的产量。然而，它通过渗透土壤剖面对地下水生态系统产生影响。采用水热法合成了g-C3N4、Bi2WO6和g-C3N4/Bi2WO6纳米复合材料，并通过原位聚合将其接枝到PVDF膜上。合成了不同pH值为5、7、9的吡呋虫威废水，并对膜的性能进行了测试，研究了制备的吡呋虫威废水的还原和光降解情况。在PVDF膜上，g-C3N4/ Bi2WO6纳米复合材料的表面能从88.65提高到145.1 mJ/m2。膜的水接触角为57.9°~ 37.7°，表明膜具有较高的亲水性。水持久性依次为M1 (PAA/PVDF)> M6 (0.5wt% g-C3N4/Bi2WO6/PAA/PVDF)> M3 (1wt% Bi2WO6/PAA/PVDF)> M7 (1wt% g-C3N4/Bi2WO6/PAA/PVDF)> M4 (0.5wt% g-C3N4/PAA/PVDF)> M2 (0.5wt% g-C3N4/PAA/PVDF)> M5 (1wt% g-C3N4/PAA/PVDF)> Neat (PVDF)。光降解研究表明，加入g-C3N4/Bi2WO6等纳米复合材料后，膜在pH 5下的降解率为80%，高于PVDF/PAA (M1)膜。

{"title":"New insights of g-C3N4/Bi2WO6 nanocomposite surface assembled on PVDF hybrid membrane for the treatment of pirimicarb pesticides","authors":"S.A. GokulaKrishnan , G. Arthanareeswaran , Shiva V Prasad , Wei-Mon Yan , Thangavel Sangeetha , J. Sashank Raman , V. Ponnusami","doi":"10.1016/j.jtice.2023.105136","DOIUrl":"10.1016/j.jtice.2023.105136","url":null,"abstract":"<div><h3>Background</h3><div>Pirimicarb, a commercially used insecticide, contains carbamate, which affects the nervous system of insects and living organisms, thus inhibiting their growth and increasing the production of crops. However, it has an impact on the ecosystem of groundwater by permeating the soil profile.</div></div><div><h3>Methods</h3><div>The g-C<sub>3</sub>N<sub>4,</sub> Bi<sub>2</sub>WO<sub>6</sub> & g-C<sub>3</sub>N<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub> nanocomposites were synthesized by <em>hydrothermal method</em> and grafted on the PVDF membranes via <em>in-situ</em> polymerization. The pirimicarb wastewater of different pH 5,7 & 9 was synthetically prepared, and the performance of the membrane was tested to study the reduction and photodegradation of as-prepared pirimicarb wastewater.</div></div><div><h3>Significant</h3><div>The surface energy had increased from 88.65 to 145.1 mJ/m<sup>2</sup>, g-C<sub>3</sub>N<sub>4</sub>/ Bi<sub>2</sub>WO<sub>6</sub> nanocomposites on the PVDF membranes. The water contact angle of the membrane ranges from 57.9° to 37.7°, indicating that the membranes have higher hydrophilic characteristics. The water permanence is in the decreasing order of M1 (PAA/PVDF)> M6 (0.5wt% g-C<sub>3</sub>N<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub>/PAA/PVDF)> M3 (1wt% Bi<sub>2</sub>WO<sub>6</sub>/PAA/PVDF)> M7 (1wt% g-C<sub>3</sub>N<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub>/PAA/PVDF)> M4 (0.5wt% g-C<sub>3</sub>N<sub>4</sub>/PAA/PVDF)> M2 (0.5wt% Bi<sub>2</sub>WO<sub>6</sub>/PAA/PVDF)> M5 (1wt% g-C<sub>3</sub>N<sub>4</sub>/PAA/PVDF)> Neat (PVDF). The photodegradation studies stated that upon adding nanocomposites such as g-C<sub>3</sub>N<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub>, the membranes undergo degradation of 80% at pH 5, which is higher than the PVDF/PAA (M1) membrane.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 105136"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorptive removal of endocrine disruptor bisphenol A from aqueous environment using sugarcane bagasse derived biochar 利用蔗渣生物炭吸附去除水中环境中的内分泌干扰物双酚A

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2023.105216

Muthamilselvi Ponnuchamy , Ashish Kapoor , Meenu Mariam Jacob , Anjali Awasthi , Moitraiyee Mukhopadhyay , Shanmugapriya Nandagobu , Akshara Raghav , Deepshika Arvind , Paromita Chakraborty , Sivaraman Prabhakar

Background

Endocrine-disrupting chemicals, such as bisphenol A (BPA), pose a grave global concern in aqueous environments. Agricultural waste-derived biochar has garnered interest as an eco-friendly, cost-effective adsorbent for wastewater treatment.

Methods

Biochar, synthesized by pyrolytic treatment of sugarcane bagasse at 400 °C (BC400), was analyzed for BPA adsorption and physicochemical characteristics. Process parametric studies, scale-up design, and economic assessment were carried out to ascertain the viability of BC400 for BPA removal.

Findings

BC400 exhibited a specific surface area of 14.302 m² g⁻¹, a pore volume of 0.005 cm³ g⁻¹, and a pore radius of 3.133 nm. Scanning electron microscopy of BC400 revealed longitudinal pores attributed to vascular biomass usage. The conversion of feedstock into biochar led to an increase in carbon content. With an O/C ratio of 0.28, BC400 indicated suitability for sequestration. The maximum adsorption capacity of BPA was 32.05 mg g⁻¹ at pH 6.0. The adsorption mechanism likely involved electrostatic interactions and hydrogen bonding. The adsorption behavior adhered to pseudo-second order kinetics and Freundlich isotherm. BC400 demonstrated potential as an efficacious adsorbent for BPA removal from contaminated water in resource-constrained settings.

干扰内分泌的化学物质，如双酚A (BPA)，在水环境中引起了全球的严重关注。农业废物衍生的生物炭作为一种生态友好、成本效益高的废水处理吸附剂已引起人们的兴趣。以蔗渣为原料，在400℃(BC400)条件下热解合成生物炭，分析其对BPA的吸附及理化特性。进行了工艺参数研究、放大设计和经济评估，以确定BC400去除BPA的可行性。BC400的比表面积为14.302 m2 g−1，孔体积为0.005 cm3 g−1，孔半径为3.133 nm。扫描电镜显示BC400的纵向气孔归因于维管生物量的利用。原料转化为生物炭导致碳含量增加。BC400的O/C比值为0.28，表明其适合固存。在pH 6.0时，双酚a的最大吸附量为32.05 mg g−1。吸附机理可能涉及静电相互作用和氢键作用。吸附行为符合拟二级动力学和Freundlich等温线。在资源受限的环境下，BC400作为一种有效的吸附剂，具有从污染水中去除BPA的潜力。

{"title":"Adsorptive removal of endocrine disruptor bisphenol A from aqueous environment using sugarcane bagasse derived biochar","authors":"Muthamilselvi Ponnuchamy , Ashish Kapoor , Meenu Mariam Jacob , Anjali Awasthi , Moitraiyee Mukhopadhyay , Shanmugapriya Nandagobu , Akshara Raghav , Deepshika Arvind , Paromita Chakraborty , Sivaraman Prabhakar","doi":"10.1016/j.jtice.2023.105216","DOIUrl":"10.1016/j.jtice.2023.105216","url":null,"abstract":"<div><h3>Background</h3><div>Endocrine-disrupting chemicals, such as bisphenol A (BPA), pose a grave global concern in aqueous environments. Agricultural waste-derived biochar has garnered interest as an eco-friendly, cost-effective adsorbent for wastewater treatment.</div></div><div><h3>Methods</h3><div>Biochar, synthesized by pyrolytic treatment of sugarcane bagasse at 400 °C (BC400), was analyzed for BPA adsorption and physicochemical characteristics. Process parametric studies, scale-up design, and economic assessment were carried out to ascertain the viability of BC400 for BPA removal.</div></div><div><h3>Findings</h3><div>BC400 exhibited a specific surface area of 14.302 m<sup>2</sup> g<sup>−1</sup>, a pore volume of 0.005 cm<sup>3</sup> g<sup>−1</sup>, and a pore radius of 3.133 nm. Scanning electron microscopy of BC400 revealed longitudinal pores attributed to vascular biomass usage. The conversion of feedstock into biochar led to an increase in carbon content. With an O/C ratio of 0.28, BC400 indicated suitability for sequestration. The maximum adsorption capacity of BPA was 32.05 mg g<sup>−1</sup> at pH 6.0. The adsorption mechanism likely involved electrostatic interactions and hydrogen bonding. The adsorption behavior adhered to pseudo-second order kinetics and Freundlich isotherm. BC400 demonstrated potential as an efficacious adsorbent for BPA removal from contaminated water in resource-constrained settings.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 105216"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135615836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing the micro/mesoporous structure of hierarchical graphene aerogel for CO2 capture by controlling the oxygen functional groups of graphene oxide 通过控制氧化石墨烯的氧官能团优化用于二氧化碳捕集的分层石墨烯气凝胶的微/介孔结构

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2024.105352

Elahe Safaei , Zahra Talebi , Vahid Ghafarinia

Background

Graphene aerogels as solid porous adsorbents are great candidates for CO₂ adsorption based on their tunable hierarchical pore structure and oxygenated groups on graphene oxide can control the self-assembly and pore structure of graphene aerogels.

Methods

Modified Hummer's method was used to synthesize graphene oxides by using various levels of H₂SO₄, KMnO_4, and H₂O₂ and 3D graphene aerogels were synthesized via the hydrothermal and freeze-drying method. FTIR, RAMAN, XRD, FE-SEM, and BET analysis were used for characterizations.

Significance findings

The effect of graphite oxidation conditions on the hierarchical porous structure of graphene aerogel for CO₂ adsorption was investigated. The graphene aerogel with the high meso and micro surface areas and the highest S_m/S_T value (micro surface area/total micro and meso surface area) of 33 % and also, the adequate macropores was achieved using high dosage of H₂SO₄ in the graphene oxidation process led to the highest CO₂ adsorption capacity of 1.72 mmol/g. increasing the H₂O₂ dosages increased the macropores in the aerogel structure and improved the value of S_m/S_T leading to an increase in the CO₂ adsorption capacity. The high content of KMnO₄ led to low S_m/S_T value and fewer macropores and decreased the CO₂ adsorption capacity (1.04 mmol/g).

{"title":"Optimizing the micro/mesoporous structure of hierarchical graphene aerogel for CO2 capture by controlling the oxygen functional groups of graphene oxide","authors":"Elahe Safaei , Zahra Talebi , Vahid Ghafarinia","doi":"10.1016/j.jtice.2024.105352","DOIUrl":"10.1016/j.jtice.2024.105352","url":null,"abstract":"<div><h3>Background</h3><div>Graphene aerogels as solid porous adsorbents are great candidates for CO<sub>2</sub> adsorption based on their tunable hierarchical pore structure and oxygenated groups on graphene oxide can control the self-assembly and pore structure of graphene aerogels.</div></div><div><h3>Methods</h3><div>Modified Hummer's method was used to synthesize graphene oxides by using various levels of H<sub>2</sub>SO<sub>4</sub>, KMnO<sub>4,</sub> and H<sub>2</sub>O<sub>2</sub> and 3D graphene aerogels were synthesized via the hydrothermal and freeze-drying method. FTIR, RAMAN, XRD, FE-SEM, and BET analysis were used for characterizations.</div></div><div><h3>Significance findings</h3><div>The effect of graphite oxidation conditions on the hierarchical porous structure of graphene aerogel for CO<sub>2</sub> adsorption was investigated. The graphene aerogel with the high <em>meso</em> and micro surface areas and the highest S<sub>m</sub>/S<sub>T</sub> value (micro surface area/total micro and <em>meso</em> surface area) of 33 % and also, the adequate macropores was achieved using high dosage of H<sub>2</sub>SO<sub>4</sub> in the graphene oxidation process led to the highest CO<sub>2</sub> adsorption capacity of 1.72 mmol/g. increasing the H<sub>2</sub>O<sub>2</sub> dosages increased the macropores in the aerogel structure and improved the value of S<sub>m</sub>/S<sub>T</sub> leading to an increase in the CO<sub>2</sub> adsorption capacity. The high content of KMnO<sub>4</sub> led to low S<sub>m</sub>/S<sub>T</sub> value and fewer macropores and decreased the CO<sub>2</sub> adsorption capacity (1.04 mmol/g).</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 105352"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139455743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Upstream bioprocessing of Spirulina platensis microalgae using rainwater and recycle medium from post-cultivation for C-phycocyanin production 利用雨水和培养后回收介质对螺旋藻微藻进行上游生物处理生产c -藻蓝蛋白

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2023.104986

Hooi Ren Lim , Kuan Shiong Khoo , Kit Wayne Chew , Yang Tao , Ao Xia , Zengling Ma , Heli Siti Halimatul Munawaroh , Nguyen Duc Huy , Pau Loke Show

Background

The cultivation of microalgae represents a water-intensive process, prompting the need to reduce its water footprint and explore alternative water sources. Therefore, this research work aims to investigate the growth of Spirulina by recycling the culture medium obtained from the post-cultivation process and substituting rainwater resources for the preparation of the culture medium.

Methods

The effect of pre-treatment methods, specifically microfiltration and UV-light was investigated. These methods were applied to treat the recycled medium and rainwater resources used for Spirulina cultivation. Biomass concentration, biomass productivity and phycocyanin accumulation of Spirulina were examined to assess the Spirulina growth under different pre-treatment conditions.

Significant Findings

After three cultivation cycles in the recycled medium, biomass productivity decreased from 0.2246 to 0.0802 g/L/d which might be due to high salinity and biological pollutants that inhibit Spirulina growth. However, different pre-treatment methods using microfiltration and UV-light on the recycling medium were found to be effective in increasing biomass productivity from 0.1395 to 0.1861 g/L/d. Additionally, the use of rainwater for Spirulina cultivation was explored. Applying pre-treatment methods to the rainwater, biomass productivity was further improved from 0.3211 to 0.3837 g/L/d. These findings suggest that the use of pre-treatment methods and alternative rainwater resources can improve the biomass productivity of Spirulina and potentially reduce the environmental impact throughout the microalgae cultivation process.

{"title":"Upstream bioprocessing of Spirulina platensis microalgae using rainwater and recycle medium from post-cultivation for C-phycocyanin production","authors":"Hooi Ren Lim , Kuan Shiong Khoo , Kit Wayne Chew , Yang Tao , Ao Xia , Zengling Ma , Heli Siti Halimatul Munawaroh , Nguyen Duc Huy , Pau Loke Show","doi":"10.1016/j.jtice.2023.104986","DOIUrl":"10.1016/j.jtice.2023.104986","url":null,"abstract":"<div><h3>Background</h3><div>The cultivation of microalgae represents a water-intensive process, prompting the need to reduce its water footprint and explore alternative water sources. Therefore, this research work aims to investigate the growth of <em>Spirulina</em> by recycling the culture medium obtained from the post-cultivation process and substituting rainwater resources for the preparation of the culture medium.</div></div><div><h3>Methods</h3><div>The effect of pre-treatment methods, specifically microfiltration and UV-light was investigated. These methods were applied to treat the recycled medium and rainwater resources used for <em>Spirulina</em> cultivation. Biomass concentration, biomass productivity and phycocyanin accumulation of <em>Spirulina</em> were examined to assess the <em>Spirulina</em> growth under different pre-treatment conditions.</div></div><div><h3>Significant Findings</h3><div>After three cultivation cycles in the recycled medium, biomass productivity decreased from 0.2246 to 0.0802 g/L/d which might be due to high salinity and biological pollutants that inhibit <em>Spirulina</em> growth. However, different pre-treatment methods using microfiltration and UV-light on the recycling medium were found to be effective in increasing biomass productivity from 0.1395 to 0.1861 g/L/d. Additionally, the use of rainwater for <em>Spirulina</em> cultivation was explored. Applying pre-treatment methods to the rainwater, biomass productivity was further improved from 0.3211 to 0.3837 g/L/d. These findings suggest that the use of pre-treatment methods and alternative rainwater resources can improve the biomass productivity of <em>Spirulina</em> and potentially reduce the environmental impact throughout the microalgae cultivation process.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"166 ","pages":"Article 104986"},"PeriodicalIF":5.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132129335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Treatment of food processing industries wastewaters using a new clay-based inorganic membrane: Performance evaluation and fouling analysis 使用新型粘土基无机膜处理食品加工业废水：性能评估和污垢分析

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers

Pub Date : 2025-01-01 DOI: 10.1016/j.jtice.2024.105439

S. Lakshmi Sandhya Rani , K.V.V. Satyannarayana , G. Arthanareeswaran , Vinoth Kumar Raja

Background

Ceramic membranes are intensely extending their applicability in wastewater treatment due to their excellent resistance to corrosive environment, anti-fouling nature, and longer lifetime. To further widen the usage of ceramic membranes despite of their high cost, development of inexpensive ceramic membranes is highly anticipated.

Method

A novel inexpensive Fuller's earth clay ceramic membrane's performance was evaluated in treating the wastewater obtained from two food processing industries, namely the dairy industry and palm oil industry, by varying the applied pressure from 0.35 – 2 bar. Furthermore, the fouling mechanism concerning the microfiltration of wastewater was identified with the help of Hermia's pore blocking models.

Significant Findings

The prepared novel Fuller's earth clay ceramic membrane significantly reduced COD content below the permissible discharge limit (< 200 mg/L) for dairy and palm oil industry wastewaters at a pressure of 0.35 bar. Notably, 98 – 99 % removal of turbidity and suspended solids was achieved. Also, the total phosphorus content was brought down below the permissible discharge limit of 5 mg/L. From fouling analysis, it was inferred that the cake filtration model appropriately fits the obtained experimental results, confirming the anti-fouling nature of the fabricated clay membrane in treating food process industries' wastewater.

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引用次数: 0