Article
Engineering, Chemical
Sangeetha Jayaraman, R. Sharmil Suganya, Thiruvengadam Venugopal
Summary: Three types of activated carbon were prepared and analyzed for their ability to remove methylene blue dye. The results showed that all the activated carbon had a similar functional group and exhibited effective adsorption of methylene blue. The activated carbon also had a high surface area and suitable pore size for the removal of the dye.
DESALINATION AND WATER TREATMENT
(2023)
Article
Chemistry, Physical
Youness Achour, Lahoucine Bahsis, El-Houssaine Ablouh, Hicham Yazid, My Rachid Laamari, Mohammadine El Haddad
Summary: A novel activated carbon (AC-BBP) from Bombax Buonopozense was prepared and used for the removal of Congo red (CR) from aqueous solution, with an optimized removal efficiency of 86.12% under the conditions of an adsorbent dosage of 0.117 g/L, solution pH of 7.87 and a contact time of 29 minutes. Langmuir isotherm and pseudo-second-order kinetic model were found to be good predictors for the experimental adsorption of Congo red.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Mohammed Danish, Zhou Pin, Lou Ziyang, Tanweer Ahmad, Shahnaz Majeed, Ahmad Naim Ahmad Yahya, Waheed Ahmad Khanday, H. P. S. Abdul Khalil
Summary: Banana trunk waste was used to produce activated carbons with improved surface area and phosphorus atom dispersion. The production process was optimized through a chemical activation method using phosphoric acid. The activated carbon showed a porous surface with high carbon content and good thermal stability.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Katya Cherukumilli, Max Steiner, Jessica R. Ray
Summary: Despite centuries of water treatment advancements, many people worldwide still suffer health impacts from drinking water with unsafe fluoride levels. The study found that fluoride adsorption increases exponentially with time, with smaller particle sizes leading to higher removal efficiencies, and increasing the ratio of reactive media in filters can increase the volume of treated water. By modifying a model, the performance of large-scale columns can be predicted, and the application of the RSSCT model can design smaller lab-scale columns with lower resource inputs.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2021)
Article
Engineering, Environmental
K. N. Mahadevaprasad, D. S. Aditya, Glenita D'Souza, Anshu Kumar, S. K. Nataraj
Summary: In this study, a zirconium(IV)-chitosan@agar biofoam was successfully synthesized and characterized. The biofoam showed high adsorption capacity for fluoride and hexavalent chromium, and demonstrated good removal efficiency in a dynamic flow method.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Guizhen Li, Jianmin Li, Wei Tan, Min Yang, Hongbin Wang, Xiangyu Wang
Summary: The widespread use of fungicides is causing water pollution. This study focused on carbendazim, a model fungicide, and examined its adsorption on activated carbon (AC). The optimal conditions for carbendazim adsorption were determined to be an AC dosage of 0.3 g, reaction time of 150 min, and pH ranging from 3.0 to 10.0. The adsorption capacity reached 32.31 mg g(-1) under these conditions. The adsorption process was found to be a monolayer adsorption that occurred on the surface of the AC. The study also confirmed that the adsorption of carbendazim was an endothermic process with physical and chemical adsorption. The findings of this study can be applied to other types of AC and provide valuable information for treating fungicide wastewater.
Article
Engineering, Multidisciplinary
Kai Fang, Rendang Yang
Summary: Oxidation treatment enhances the pore volume and surface area of activated carbon, leading to increased adsorption capacity for furfural.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Zhihao Chen, Yonghong Wu, Yingping Huang, Linxu Song, Hongfeng Chen, Shijiang Zhu, Cilai Tang
Summary: The study demonstrates that metal (hydr)oxide modification can effectively enhance phosphate (P) adsorption capacity of biochar, and the Ca/Zn modified biochar exhibits the best P adsorption efficiency. The modified biochar surface shows increased reactive sites and oxygen-containing groups, leading to significantly improved adsorption capacity. This research highlights the potential application of Ca/Zn modified biochar for P adsorption.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Bhaswati Devi, Netra Prova Baruah, Anasuya Bharadwaj, Arundhuti Devi
Summary: Elimination of excessive fluoride from the environment is a serious issue nowadays. In this study, a novel activated carbon supported tetrametallic oxide hybrid system was developed for fluoride removal. The adsorption performance of the system was investigated and it was found to follow Freundlich isotherm and pseudo-second order kinetics, indicating both physical and chemical adsorption mechanisms.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Green & Sustainable Science & Technology
Asma Nasrullah, Amir Sada Khan, A. H. Bhat, Israf Ud Din, Abrar Inayat, Nawshad Muhammad, Esraa M. Bakhsh, Sher Bahadar Khan
Summary: The study investigates the effects of short time ball milling on activated carbon synthesized from mangosteen peels waste, and its adsorption capability for methylene blue dye. Results showed that ball milling decreases particle size of activated carbon, increases adsorption efficiency, and is influenced by pH, contact time, and temperature.
Article
Chemistry, Analytical
Ishaq Kariim, Yusuf Olatunji Waidi, Hulda Swai, Thomas Kivevele
Summary: Global issues such as instability, pump-price increase, inflation, and depletion of fossil fuel resources highlight the importance of addressing the continuous release of greenhouse gases from fossil fuels combustion. To enhance the hydrothermal liquefaction (HTL) of biomass feedstocks, a novel catalyst, iron supported carbon nanospheres (Fe/CNSs), was developed and its catalytic potency was optimized using a central composite design. The Fe/CNSs catalyst demonstrated improved performance, with the optimum biocrude yield of 71.09 wt% achieved at 430 degrees C and 3 wt% catalyst loading. The selectivity towards phenolics and aromatic compounds in the biocrude suggests the potential for further upgrading into transportation fuel through hydrodeoxygenation.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Agronomy
Monika Chaudhary, Suhas, Sarita Kushwaha, Shubham Chaudhary, Inderjeet Tyagi, Mohammad Hadi Dehghani, Baskaran Stephen Inbaraj, Joanna Goscianska, Minaxi Sharma
Summary: This study investigates the importance of the interaction and position of the nitro group in the adsorption of 2-nitrophenol (2-NP), 4-nitrophenol (4-NP), and phenol by demineralized kraft lignin activated carbon (DKLAAC). The results show that the adsorption follows the order 2-NP > 4-NP > phenol, and both solubility and donor-acceptor complex mechanism play a significant role in the adsorption process. The experimental data fits well with the Langmuir adsorption isotherm and pseudo-second order kinetic models. The temperature study reveals that the adsorption process is endothermic and spontaneous with high affinity between DKLAAC and phenols.
Article
Engineering, Environmental
Jiwon Chung, Neha Sharma, Minyoung Kim, Kyusik Yun
Summary: The study investigated the adsorption of methylene blue from wastewaters using activated carbon derived from sucrose and melamine. The synthesized adsorbent showed high specific surface area and fast adsorption rate, making it effective in removing methylene blue from wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Polymer Science
David Choque-Quispe, Carlos A. Ligarda-Samanez, Betsy S. Ramos-Pacheco, Aydee M. Solano-Reynoso, Justiniano Quispe-Marcatoma, Yudith Choque-Quispe, Diego E. Peralta-Guevara, Edgar L. Martinez-Huaman, Odilon Correa-Cuba, Mery Luz Masco-Arriola, Washington Julio Lechuga-Canal, Fred Montalvo Amanca
Summary: This study introduced a novel composite material for the removal of heavy metals from wastewater. The composite, made of activated nanoclay and hydrocolloid, demonstrated a high adsorption capacity and chelating ability. Experimental results showed that the composite achieved a removal percentage of over 99% for lead, and also exhibited good performance in removing arsenic, cadmium, and zinc.
Article
Environmental Sciences
D. Eunice Jayashree, P. Senthil Kumar, P. Tsopbou Ngueagni, Dai-VietN Vo, Kit Wayne Chew
Summary: In this study, a novel biosorbent derived from Bauhinia variegata pods was used for defluoridation of fluoride contaminated water. Physically Treated Bauhinia and Chemically Treated Bauhinia were compared, with the latter showing higher adsorption capacity. The adsorption process was described by the Pseudo first-order model and thermodynamic parameters indicated favorable conditions. Column studies using models like Yoon-Nelson showed promising results, with a maximum adsorption capacity of 1.176 mg/g achieved.
ENVIRONMENTAL POLLUTION
(2021)
Article
Energy & Fuels
Somnath Chowdhury, Sumit H. Dhawane, Bipul Jha, Sucharita Pal, Ramanand Sagar, Adil Hossain, Gopinath Halder
Summary: The study investigates the synthesis of biodiesel from Madhuca indica oil using waste egg shell-derived catalyst, optimizing the productivity of biodiesel and identifying parameters affecting yield. Confirmatory experiments validated the produced biodiesel meeting ASTM standards.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Green & Sustainable Science & Technology
Bisheswar Karmakar, Bidipta Ghosh, Sucharita Samanta, Gopinath Halder
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2020)
Article
Engineering, Environmental
Prasenjit Chakraborty, Shani Dev Singh, Indrajit Gorai, Dileep Singh, Wasi-Ur Rahman, Gopinath Halder
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Engineering, Chemical
Ruchika Thakur, Gopinath Halder, Sanghamitra Barman
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2020)
Article
Green & Sustainable Science & Technology
Bisheswar Karmakar, Sucharita Samanta, Gopinath Halder
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Polymer Science
Deepshikha Datta, Sucharita Samanta, Gopinath Halder
Summary: The study focused on the parametric optimization of LDPE blended silane-modified nanosilica films with different compositions of starch/starch phthalate using central composite design approach of response surface methodology. The results indicated that the optimized conditions are required for high biodegradation and superior mechanical properties under specific conditions.
Article
Energy & Fuels
Nidhi Sharma, R. D. Godiyal, Bhawana, B. P. Thapliyal, Kumar Anupam
Summary: Grasses, particularly Cymbopogon winterianus Jowitt (citronella grass), have shown potential as alternative raw materials for pulp and papermaking processes. This study explored the pulp and papermaking characteristics of citronella grass and found it to be suitable for producing high-quality writing and printing grade paper.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Green & Sustainable Science & Technology
Shraboni Mukherjee, Anoar Ali Khan, Sanghamitra Barman, Gopinath Halder
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2020)
Article
Chemistry, Analytical
Tanishka Mehta, Aanchal Rathi, Anoop Verma, Sanghamitra Barman, Gopinath Halder
Summary: The study evaluated the performance of copper modified zeolite-13X as an adsorbent for removing Fipronil pesticide from synthetic wastewater. Results showed a maximum removal rate of 92.3% under optimal conditions, indicating the potential of copper-doped zeolite as a sorbent for the eradication of Fipronil pesticide from wastewater.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Energy & Fuels
Sumona Show, Bisheswar Karmakar, Gopinath Halder
Summary: The study explored the sorptive potential of biochar derived from tamarind seeds for removing pharmaceutical micropollutant IBP in aqueous media. Different parametric conditions were examined to optimize the removal process and the biochar showed efficiency in multiple cycles of usage. Cost estimation indicated feasibility for commercial utilization of the engineered adsorbents. The maximum removal percentages achieved were 72.29% and 95.44% for TRB and TCAB respectively, demonstrating the effectiveness of biochar in eliminating IBP from water.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Multidisciplinary Sciences
Avinash Palodkar, Harshal J. Dongre, Niraj Thakre, Amiya K. Jana
Summary: This study investigates the methane-carbon dioxide replacement mechanism through molecular dynamics simulations. The results show that both pure CO2 and salt ions can effectively replace methane to form hydrates in different modes.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Prahlad Gurjar, Sadhbhawana Dubey, Sanat Kumar, Asheesh Kumar
Summary: This study evaluates the formation kinetics and storage capacity of CO2 hydrates in clayey-sandy sediments and develops a chemical potential-based kinetic model. The research provides important insights for the deployment of HBCS technology in subsea clayey-sandy sediments in the Krishna-Godavari Basin of India.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Pratibha Negi, Pankaj Kumar Dubey, Avinash V. Palodkar, Sanat Kumar, Ajay Kumar
Summary: This study evaluates the thermal cracking kinetics and thermodynamics of real-world waste plastics, indicating that mixed waste plastics consume significantly more energy for thermal breakdown reactions compared to other types of waste plastics. The findings are important for the production of petrochemical products using waste plastics.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Rupali Gautam, Avinash Palodkar, Manisha Sahai, Sanat Kumar, Asheesh Kumar
Summary: The study evaluates the impact of lecithin on the kinetic formation of carbon dioxide hydrates, showing that lecithin slows down the rate of hydrate formation without affecting the equilibrium conditions. The findings suggest that lecithin can be used for hydrate inhibition to address flow assurance issues and provide new possibilities for carbon capture and seawater desalination.
CHEMICAL ENGINEERING JOURNAL ADVANCES
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Nidhi Sharma, Bhawana, R. D. Godiyal, B. P. Thapliyal, Kumar Anupam
MATERIALS TODAY-PROCEEDINGS
(2020)