Article
Environmental Sciences
Mustafa Rakib, Yeshaswini Baddam, Balakrishnan Subeshan, Ayse B. Sengul, Eylem Asmatulu
Summary: The lack of safe drinking water is a major problem in many areas of the world due to climate change, population growth, and unsustainable water usage. Research focusing on water quality, pollution, and control is needed to manage unexpected changes in water sources. This study assesses the effectiveness of algae-based activated carbons and develops a low-cost sustainable process for wastewater treatment. The results showed that algae-based carbon with CaCl2 activation provided a better surface area and cumulative pore volume. The filtration process using algae-based activated carbon shows promise for water treatment with further improvement and modifications.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Engineering, Environmental
Tianchi Shen, Yayong Yang, Ekkachai Kanchanatip, Dwi Hantoko, Feng Chen, Cheng Chen, Mi Yan
Summary: Hydrothermal carbonization (HTC) is an efficient method to convert wet food waste into hydrochar. However, the by-product of this process, HTC wastewater, contains highly polluting chemicals. In this study, hydrochar was produced through HTC process and further processed into activated carbon (AC) using KOH activation. The obtained AC was used to catalyze the degradation of HTC wastewater. The optimal condition for the catalytic process was determined, achieving a COD removal efficiency of 78.94%.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Zishuai Jiang, Shih-Hsin Ho, Xin Wang, Yudong Li, Chengyu Wang
Summary: This study summarizes the advantages of cellulose-biomass materials in water treatment, including their unique structure, environmental friendliness, degradability, renewability, and low energy cost benefits. Future research directions include oil-water separation, heavy metal ions in water, and dye adsorption.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Multidisciplinary
Barbora Grycova, Katerina Klemencova, Pavel Lestinsky, Jaroslav Stejskal, Tomas Saha, Miroslava Trchova, Jan Prokes
Summary: The study investigates the conductivity of chromium-tanned pigskin leather waste carbonized using various methods to produce nitrogen-containing carbons. Four protocols were tested, and the most effective method involved pre-carbonization followed by activation. It was found that the carbonized material maintained its fibrous collagen morphology, with a slight reduction in yield. The activated products showed improved specific surface area, pore volume, and conductivity. The resistivity of the carbonized leather was determined, and the sample conductivity was relatively unaffected by the carbonization method.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Review
Polymer Science
Jiho Choi, Inchan Yang, Sung-Soo Kim, Se Youn Cho, Sungho Lee
Summary: Although plastic has improved human life quality, dealing with plastic waste is a major challenge. Researchers are exploring ways to upgrade discarded plastic into higher value-added products, such as carbonaceous materials.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Ruixiong Hu, Yu Liu, Gaojun Zhu, Cheng Chen, Dwi Hantoko, Mi Yan
Summary: The combination of coagulation and activated carbon adsorption can effectively reduce the COD in HTC wastewater and enhance its biodegradability, making it suitable for further biochemical treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Biochemistry & Molecular Biology
Ke Zhang, Kameron J. Adams, Sandeep Kumar, Zhi-Wu Wang, Yi Zheng
Summary: This research reveals a new biological method using Thraustochytrium striatum to treat HC-AP from hydrothermal conversion of municipal solid waste, achieving high removal rates of TOC, TN, TP, and refractory compounds under optimum conditions. This offers a promising approach for the treatment and valorization of HC-AP.
PROCESS BIOCHEMISTRY
(2022)
Article
Engineering, Chemical
PratimaDevi Sivasubramanian, Mohanraj Kumar, V. S. Kirankumar, Melvin S. Samuel, Cheng-Di Dong, Jih-Hsing Chang
Summary: Pollution of water and limited availability of freshwater are major global environmental issues. Capacitive deionization and electrosorption, based on electrochemistry, have gained recognition due to their ability to remove ions from wastewater, cost-effectiveness, reduced energy consumption, and electrode renewal. This review paper provides a detailed description of these techniques, highlighting different electrode materials and their applications in wastewater treatment, such as desalination and removal of heavy metals and organic compounds. It serves as a valuable resource for the development of these technologies as alternative water treatment solutions.
Article
Environmental Sciences
Hari Bhakta Sharma, Sagarika Panigrahi, Kumar Raja Vanapalli, V. R. Sankar Cheela, Saikrishna Venna, Brajesh Dubey
Summary: This study investigated the reusability and valorization of process wastewater generated during co-hydrothermal carbonization of organic fraction of municipal solid waste. The anaerobic digestion of process water and its recirculation up to five times enhanced the fuel properties of hydrochar, leading to increased energy yield, carbon content, calorific value, and overall combustion characteristics. The presence of high organic and ionic species in recirculated process water promoted the carbonization process and reduced the water related burden, creating a cleaner production system for renewable solid biofuels production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Hongcai Su, Xuanyou Zhou, Rendong Zheng, Zhihao Zhou, Yan Zhang, Gaojun Zhu, Caimeng Yu, Dwi Hantoko, Mi Yan
Summary: This study aims to convert oil extracted food waste into hydrochar as potential solid fuel via hydrothermal carbonization process. The hydrochar produced has higher high heating value and fuel ratio, increased carbon content, stable combustion process, and high removal rates of sodium and potassium. Hydrothermal carbonization is considered a promising alternative for treatment and energy conversion of OEFW.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Engineering, Environmental
Nadeem Hussain Solangi, Jai Kumar, Shaukat Ali Mazari, Shoaib Ahmed, Noor Fatima, Nabisab Mujawar Mubarak
Summary: Hazardous contamination of water is a major obstacle in providing usable and drinkable water to the world. Innovative, economic, renewable and environmentally friendly technologies are urgently needed for wastewater treatment. Adsorption is seen as a promising approach due to its efficiency, and bioadsorbents derived from fruit waste sources offer a potential solution for wastewater treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Nesrine Abderrahim, Ibtissem Boumnijel, Hedi Ben Amor, Ridha Djellabi
Summary: The use of ZnCl2 as a chemical agent in the heat treatment process can optimize the fabrication of highly adsorptive activated carbon from agricultural waste. The synthesized activated carbon shows comparable physical and chemical properties to commercial activated carbons. These findings provide important guidance for the utilization of agricultural waste in environmental remediation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Feixiang Zan, Asad Iqbal, Xiejuan Lu, Xiaohui Wu, Guanghao Chen
Summary: Sustainable food waste management is crucial for improving food security and conserving natural resources and ecosystems. Diverting food waste from solid waste to wastewater stream allows for separation, collection, treatment, and disposal, while also recovering water, resources, and energy. Extensive studies have been conducted to evaluate the feasibility and impacts of food waste diversion on solid waste and wastewater systems. The review identifies challenges and discusses the contribution of food waste diversion to urban sustainability.
Article
Materials Science, Ceramics
Siti Khadijah Hubadillah, Mohd Riduan Jamalludin, Mohd Hafiz Dzarfan Othman, Yuji Iwamoto
Summary: This review paper summarizes the fabrication methods, alternative materials, microstructure, wettability, mechanical properties, and applications of low-cost ceramic membranes. It also discusses the modification strategies and challenges for further development.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Xuwen Liu, Yan Hu, Caimin Yang, Jiaxin Su, Yinghua Ye, Ruiqi Shen
Summary: Chitosan (CTS) is an adsorbent that can absorb copper ions, and the carbon skeleton formed by the pyrolysis of CTS has excellent electrical conductivity, which improves the electrostatic safety of copper azide (CA). In this study, CTS was used to adsorb and flocculate copper ions in wastewater to form a CTS-Cu complex, which was then calcined to form a porous carbon matrix and embedded with copper nanoparticles, creating a Cu@carbonized chitosan (CCTS) precursor material. The resulting CA@CCTS is a novel lead-free primary explosive with good electrostatic safety and a high proportion of CA.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Multidisciplinary
Md. Nizam Uddin, Fenil Desai, Eylem Asmatulu
ENVIRONMENTAL CHEMISTRY LETTERS
(2020)
Review
Chemistry, Multidisciplinary
Ayse Busra Sengul, Eylem Asmatulu
ENVIRONMENTAL CHEMISTRY LETTERS
(2020)
Article
Thermodynamics
Fenil Desai, Asonganyi Atayo, Jenne Sunku Prasad, Palanisamy Muthukumar, Muhammad Rahman, Eylem Asmatulu
Summary: Thermochemical energy storage (TCES) shows promise for storing renewable energy with higher energy storage density and ambient temperature storage advantages. Experimental studies on fertilizer based salts as potential TCES materials for cooling applications demonstrate significant cooling effects when dissolved in water.
HEAT TRANSFER ENGINEERING
(2021)
Review
Chemistry, Physical
Ahmed Olanrewaju Ijaola, Emmanuel Anuoluwa Bamidele, Cletus John Akisin, Idris Temitope Bello, Abiola Tunde Oyatobo, Abdullah Abdulkareem, Peter Kayode Farayibi, Eylem Asmatulu
SURFACES AND INTERFACES
(2020)
Review
Environmental Sciences
Merve Erkinay Ozdemir, Zaara Ali, Balakrishnan Subeshan, Eylem Asmatulu
Summary: The increase in waste generation has significantly impacted human health, natural ecosystems, and ecological balance. Despite the rising recycling rates, challenges such as high expenses in waste separation persist. Machine learning plays a crucial role in improving waste recycling processes.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2021)
Review
Energy & Fuels
Zaara Ali, Balakrishnan Subeshan, Md. Asraful Alam, Eylem Asmatulu, Jingliang Xu
Summary: The exploration of alternative and sustainable sources of fuel production is crucial due to increasing demand, shortages in affordable fossil fuels, and environmental pollution. Natural microalgae associated with bacteria have shown promise as an energy source as they thrive in all natural environments and contribute to the carbon cycle. However, the extraction of lipids from microalgae cells is complex due to their cell structure and characteristics. Current dry extraction methods consume more energy than the extraction itself. A cost-effective and efficient technology for biodiesel extraction from microalgae is still lacking. Studies suggest that eliminating the drying step and extracting lipids in one step through techniques like supercritical method, ionic liquids, Eutectic solvents, and transesterification could be optimal. Effective lipid extraction technique remains a major constraint. Fuel production from wet microalgae biomass is desirable as it eliminates energy-intensive processes like dewatering and drying. Further research and exploration are needed to implement and optimize wet extraction techniques.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Physical
Yeshaswini Baddam, Ahmed Olanrewaju Ijaola, Eylem Asmatulu
Summary: This study focuses on fabricating novel flame-retardant and superhydrophobic nanofibers using recycled EPS, SiO2, and BA, which showed promising results in terms of water repellency, flame retardancy, and weight loss compared to pure EPS. These nanofibers could potentially be used as protective layers in the electronics and packaging industries.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Composites
Muhammad Shoaib, Balakrishnan Subeshan, Waseem S. Khan, Eylem Asmatulu
Summary: This study investigates the pyrolysis conversion of plastic waste into fuel oils, using catalysts such as magnesium silicate and Cloisite 30B, and compares the results with a zeolite catalyst. High-density polyethylene and polypropylene were decomposed under different experimental conditions, with zeolite showing higher oil yield compared to other catalysts. Spectra analysis using FTIR and GC revealed consistent results within the fuel range for all samples.
PROGRESS IN RUBBER PLASTICS AND RECYCLING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Md. Nizam Uddin, Fenil J. Desai, Balakrishnan Subeshan, Muhammad M. Rahman, Eylem Asmatulu
Summary: A study on producing superhydrophobic nanocomposite fibers from recycled materials offers a cost-effective solution for atmospheric clean water production, particularly suitable for arid areas. These fibers exhibit excellent water-repellent properties and have the potential to be mass-produced for clean water at a relatively low cost.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Naveenkumar Madeswaran, Fenil J. Desai, Eylem Asmatulu
Summary: This study explores the impact of PCMs on storing thermal energy generated by concentrated solar thermal power plants through life cycle assessment and inventory analysis, providing guidance for PCM system design. Results show that PCMs produced with Na2CO3 have the lowest emissions to air but are harmful to water. PCM mixtures perform better than individual PCMs but cost three times as much.
EMERGENT MATERIALS
(2021)
Article
Materials Science, Composites
Sultan M. Bayazeid, Kim-Leng Poon, Balakrishnan Subeshan, Mohammed Alamir, Eylem Asmatulu
Summary: The study investigated the use of induction heating (IH) for recovering impact-damaged CFRCs, revealing that IH can effectively improve the impact damage performance of CFRC. These results are promising for various applications, especially in the aerospace and automotive industries.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Eylem Asmatulu, Mohammad Nahid Andalib, Balakrishnan Subeshan, Farhana Abedin
Summary: Nanomaterials, with unique properties, are extensively used in various industries. However, their ubiquitous presence in the environment may induce toxicity issues for humans. This review focuses on the impact of nanomaterial exposure on human cells and animal models, particularly discussing silver, gold, silica, quantum dots, iron oxides, zinc oxide, and titanium dioxide. Accumulation of nanomaterials in the heart, liver, spleen, kidney, and brain through ingestion, dermal penetration, inhalation, and intravenous routes is evidenced.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Rajakaruna A. D. N. Rajakaruna, Balakrishnan Subeshan, Eylem Asmatulu
Summary: This study aims to create hydrophobic materials based on low-cost manufacturing. The researchers mixed polylactic acid (PLA) with hexadecyltrimethoxysilane (HDTMS) and polytetrafluoroethylene (PTFE) to produce hydrophobic PLA filaments suitable for additive manufacturing (AM). The results showed that adding HDTMS and PTFE significantly enhanced filament hydrophobicity.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Environmental Sciences
Zaara Ali, Eylem Asmatulu
Summary: This study examines a chemical recycling process involving acid treatment and solvent-based recovery of outdated resin-impregnated composite fibers, aiming to improve the reusability and sustainability of composite materials.
WASTE AND BIOMASS VALORIZATION
(2022)
Article
Engineering, Environmental
Francisco de Borja Ojembarrena, Elena Fuente, Angeles Blanco, Carlos Negro
Summary: Accumulation of Cr(VI) in industrial fiber cement process water can affect product quality and health, and it needs to be removed to avoid environmental risks. The study found that cationic cellulose nanocrystals (CCNCs) have higher adsorption efficiency and lower cost compared to conventional adsorbents.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Review
Engineering, Environmental
Shentan Liu, Yangchen Zhang, Xiaojuan Feng, Sang-Hyun Pyo
Summary: This paper summarizes the common problems of constructed wetlands (CWs) and proposes corresponding optimized solutions, including thermal insulation and additional aeration in cold climates, choosing suitable plant species and planting patterns to enhance phytoremediation in CWs, using various methods to monitor and evaluate CW clogging, implementing anti-clogging measures, controlling greenhouse gas emissions during CW treatment, constructing and utilizing CW databases, designing appropriate CW types, and implementing strict technical management and supervision.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Norzila Mohd, Nazlina Haiza Mohd Yasin, Wan Hasnidah Wan Osman, Mohd Sobri Takriff
Summary: This study demonstrates that Chlamydomonas sp. is effective in removing nutrients from palm oil mill effluent and shows particular efficiency in the removal of ammonium and phosphate.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Mingzhen Zhang, Guijian Liu, Ruijia Liu, Jinzhao Xu, Wen Si, Yong Wei
Summary: Tieguanyin tea stem was used to synthesize modified biochar for the adsorption of copper and zinc. Among the modified biochar, Fe-BCs had the highest adsorption capacity, with Fe-BC650 being the best adsorbent. It reached adsorption equilibrium in 1 minute and had a maximum adsorption capacity of 303.5996 mg/g for Cu (II) and 254.0711 mg/g for Zn (II) in single-metal solutions. However, there were antagonistic impacts between Cu2+ and Zn2+.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Lingling Zhao, Qiaoshu Zhou, Yun Yang, Yuan Zhang, Yewei Qiu, Yanjun Chen, Xian Jin, Xiangjun Yang, Shixiong Wang
Summary: This research presents a method for selectively recovering gold from e-waste water using metal sulfides microspheres prepared by hydrothermal technique. The results show that the assistance of visible light significantly improves the gold adsorption performance of metal sulfides. The metal sulfides exhibit excellent gold adsorption properties, high selectivity, ultra-high adsorption capacity, and good recyclability.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Laishram Saya, W. Rameshwor Singh, Sunita Hooda
Summary: Organic-inorganic nanoblends, such as polysaccharide-blended-inorganic ones, have versatile applications and have gained significant research attention. In this study, a magnetic guar gum/graphene oxide nanocomposite blended with CuO was successfully prepared and investigated for its adsorption capacity for ciprofloxacin removal. The results showed that the nanocomposite exhibited excellent adsorption capacity and the adsorption process was spontaneous.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Umit Ecer, Sakir Yilmaz
Summary: A novel and effective catalyst Co@MIL-68(Fe)@Fe3O4@CM-BC was synthesized and used for the catalytic reduction of crystal violet in aqueous environments. The catalyst showed high efficiency in degrading crystal violet under specific conditions, and exhibited good regeneration performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Chi Zhang, Miao Zhang, Haohan Yang, Wei Cai, Jun Wu
Summary: Enhancing the bioaugmentation of common nitrifiers in the partial nitrification/anammox process can decrease the activity of nitrite oxidizing bacteria and increase the activity of anammox bacteria, leading to improved total nitrogen removal efficiency.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Runzhang Zuo, Dajun Ren, Yangfan Deng, Canhui Song, Yubin Yu, Xiejuan Lu, Feixiang Zan, Xiaohui Wu
Summary: This study found that fine bubble aeration in membrane bioreactors (MBR) can better control membrane fouling and reduce energy consumption. However, compared to fine bubble aeration, coarse bubble aeration released more proteins and polysaccharides, resulting in a decrease in functional bacteria and enzymes involved in nitrogen and phosphorus pathways.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Ch Tahir Mehmood, Jiekai Dai, Hanjun Zhao, Ziyi Zhong
Summary: Wirelessly powered photocatalyst-coated spheres (WPS) have been developed and demonstrated for various applications, including photodegradation and fouling control. These WPS are cost-effective, easy to fabricate, and have excellent visible light sources, making them suitable as carriers for photocatalysts.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Yifan Wang, Xiaoxuan Kang, Yuting Li, Ruyi Li, Chang Wu, Luyao Wang, Chongqing Wang, Tao Yang, Ming Ge, Zhangxing He
Summary: Cobalt/carbon nanofibers (Co/CNF) were prepared and exhibited excellent catalytic activity in the degradation of tetracycline by activating peroxodisulfate (PDS). The effects of process parameters on tetracycline removal were studied, and the reaction mechanism was confirmed through experiments.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Ting Wei, Yaqian Zhao, Jia Guo, Bin Ji, Alvaro Pun Garcia, Abraham Esteve Nunez
Summary: This study developed a novel lightweight substrate (Al-NLS) composed of aluminum sludge and polyurethane, and investigated its effectiveness in constructed wetlands (CWs). Results showed that Al-NLS had favorable adsorption capacities for phosphorus and removal efficiencies for pollutants in real domestic wastewater. It also positively influenced the microbial community. Therefore, Al-NLS can be considered as a new alternative substrate in CWs technology.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Dabojani Das, Achinta Bordoloi, Heyang Yuan, Daniel J. Caldwell, Rominder P. S. Suri
Summary: This study evaluates the degradation kinetics of antibiotic resistance genes and mobile genetic elements in water matrices by ozone treatment. The results show that extracellular antibiotic resistance genes can be effectively removed, while intracellular genes are more resistant to degradation. The impact of wastewater matrix on gene degradation is minimal.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)