Article
Biotechnology & Applied Microbiology
Yijia Lin, Youzhi Dai, Li Zhang, Qian Wu
Summary: This study proposes a synergistic degradation method using calcium peroxide (CaO2) in Fenton oxidation for the treatment of phenol in water, which overcomes the disadvantages of traditional Fenton treatment. The system shows good degradation efficiency on phenol over a wide pH range, and the addition of CaO2 enhances the utilization of iron ions and H2O2.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Physical
Heba M. Salem, Asmaa A. Abdelrahman
Summary: Due to stricter environmental requirements, wide desulfurization has become crucial for obtaining ultra-clean fuels with low sulfur content for transportation purposes. In this study, a novel composite catalyst of [(FeW9O34)2 Fe4(H2O)2]-10 Fe6W18O70 cluster incorporated zirconium ferrite (ZrFe2O5) was developed to effectively remove sulfur. The structural properties of the catalyst were examined using various techniques, and Ultrasound assisted oxidative desulfurization (UAODS) processes were carried out to evaluate its performance. The catalyst Fe6W18O70@ZrFe2O5 achieved a sulfur removal rate of 98.2% within 40 minutes and could be regenerated multiple times without loss of activity. The reaction mechanism of the UAODS process was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Applied
Bolun Yu, Jingjing Yao, Haipu Li, Hui Ying Yang
Summary: The Fe2+-activated persulfate and H2O2 system showed efficient removal of mixed sulfonamides under a wide pH and temperature range. The coexistence of sulfate radicals and hydroxyl radicals in the system played a crucial role in the elimination of sulfonamides. The reaction rate constants of the radicals at different reactive sites explained the varying removal ratios of different sulfonamides.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Environmental Sciences
Yunhao Tian, Nan Jia, Liang Zhou, Juying Lei, Lingzhi Wang, Jinlong Zhang, Yongdi Liu
Summary: The study compared the degradation rates of Fe2+/PMS, Fe2+/H2O2, and Fe2+/PDS processes, and enhanced degradation efficiency by adding visible light irradiation and inverse opal WO3 co-catalyst.
Review
Acoustics
Ali Tugrul Albayrak, Aydin Tavman
Summary: Environmental pollution caused by petroleum-based fuels used in vehicles has been increasing recently. This pollution is mainly due to the emission of acidic SO2 gas during fuel combustion, which not only causes acid rain but also corrodes engine parts and catalytic converters. To reduce sulfur content, strict regulations have been introduced, but the decreasing oil reserves and the increasing low-quality oils have made desulfurization difficult and costly. Ultrasound wave has been suggested as an alternative method to enhance desulfurization in a shorter time. This review summarizes the advantages and challenges of oxidative desulfurization, evaluates the economics of ultrasound-assisted oxidative desulfurization, and provides recommendations for process improvement.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Engineering, Chemical
Dongliang Wang, Yuxiao Li, Shaogang Hu, Jingping Hu, Huijie Hou, Bingchuan Liu, Han Zheng, Xi Luo, Haixiao Li
Summary: This research designed a triple-cathode EF system for efficient degradation of recalcitrant organic pollutants. The system exhibited improved removal rate with low electricity consumption and reduced Fe2+ dosage. This work demonstrates a novel and cost-effective approach for efficient EF.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Pranjal, Soujanya Ghosh, A. P. Habeeb Rahman, Sankha Chakrabortty, Shirsendu Banerjee, Ramesh Kumar, Amrita Mishra, Byong-Hun Jeon, Cecilia Stalsby Lundborg, Suraj K. Tripathy
Summary: A systematic study was conducted to understand the bactericidal mechanism of ultrasound assisted Fenton reaction (Sono-Fenton) against multidrug resistant Acinetobacter baumannii. The study found that SF achieved approximately 99% inactivation efficiency against A. baumannii within 90 minutes under weak acidic conditions. The combination of ultrasound and H2O2 was found to be more efficient, and the generation of multiple reactive oxygen species (ROS) may have led to the membrane damage of the bacteria.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Shouchun Ma, Yang Yang, Jiaqi Li, Yuqing Mei, Yufeng Zhu, Jie Wu, Li Liu, Tongjie Yao, Qingfeng Yang
Summary: By constructing a Z-scheme Fe-2(MoO4)(3)/Ag/Ag3PO4 heterojunction, the issues of photocorrosion and quenching effect by in-situ generated H2O2 in Ag3PO4-based photocatalysts have been addressed, leading to improved degradation rate and stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Environmental Sciences
Hongbing Dan, Songlin Han, Yue Gao, Baoyu Gao, Qinyan Yue
Summary: A sono-enhanced heterogeneous Fenton catalysis process was developed to overcome the drawbacks of solid-liquid separation and mass transfer resistance. The synthesis of Fe3O4 with smaller particle size and better crystallinity on the surface of HNTs using the sonochemical strategy showed higher catalytic activity. The introduction of ultrasound further accelerated the removal of methylene blue by producing more •OH and •O-2(-), and Fe3O4@HNTs-S exhibited superior catalytic stability with lower iron ion leaching.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Elkhir Ouahiba, Malika Chabani, Aymen Amin Assadi, Amrane Abdeltif, Fourcade Florence, Bouafia Souad
Summary: Different oxidation processes were studied to compare the removal efficiency of Oxytetracycline (OTC). The initial pH solution was found to have an important role in the photolysis of OTC. The addition of oxidants had an impact on mineralization. Quantification of the main radicals involved in the oxidation process was performed.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Physical
Jintao Dong, Wenjuan Zou, Gaopeng Liu, Lina Li, Mengxia Ji, Bin Wang, Pengjun Liu, Yingjie Li, Jiexiang Xia, Huaming Li
Summary: Boric acid modified Bi2Fe4O9 (H3BO3@Bi2Fe4O9) materials were prepared by surface H3BO3 treatment on Bi2Fe4O9 through mechanical ball milling method. The study found that this modification process introduced more oxygen vacancies on the surface of Bi2Fe4O9, leading to an increased Fenton degradation rate for oxytetracycline and H2O2 utilization rate.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Environmental Sciences
Rohit Chauhan, G. Kumaravel Dinesh, Bablu Alawa, Sankar Chakma
Summary: The paper focuses on the degradation of recalcitrant pollutants using the sono-photo-ferrioxalate system and provides a critical analysis of process parameters that influence mineralization efficiency. The primary operating parameters that affect the kinetics in the sono-photo-ferrioxalate system are solution pH, temperature, molar ratio of Fe3+/C2O42-, H2O2 concentration, source of light, ultrasound intensity, dissolved gases, and size of cavitation bubble. Multiple oxidizing radicals are generated in this system, such as HO center dot, HO2 center dot, C2O4 center dot-, CO2 center dot- and O-2(center dot-), contributing to degradation.
Article
Environmental Sciences
Jae-Hun Chu, Jin-Kyu Kang, Seong-Jik Park, Chang-Gu Lee
Summary: This study found that waste antivirus copper film can be used as a Fenton-like catalyst, and the reaction activity when combined with H2O2 was significantly enhanced by ultrasound irradiation. The degradation of BPA in the sono-Fenton-like process was affected by various factors such as solution pH, temperature, ultrasound power, CF size, H2O2 dose, and initial BPA concentration.
Article
Engineering, Environmental
Ritesh Patidar, Vimal Chandra Srivastava
Summary: The study presents an ultrasound-photocatalysis based hybrid method for effective degradation/mineralization of the bio-recalcitrant pharmaceutical pollutant ofloxacin. The combined US/UV/H2O2/ZnO method showed significant synergy with OFLX degradation rate of 94.2% and total organic carbon removal rate of 45.1% under optimal operating conditions. The power-law kinetic model well represented the degradation kinetics with orders of reaction being 2.2 and 1.9 for different hybrid methods.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Xin Qin, Kaixuan Wang, Peike Cao, Yan Su, Shuo Chen, Hongtao Yu, Xie Quan
Summary: Electro-Fenton (e-Fenton) is a promising method for wastewater treatment by generating powerful .OH through the decomposition of electro-generated H2O2 catalyzed by Fe2+. However, developing a catalyst capable of simultaneously producing H2O2 and accelerating Fe2+ regeneration remains a challenge. In this study, a hollow porous carbon sphere catalyst (HPCS) was developed to enhance H2O2 generation and Fe3+/Fe2+ cycling by constructing an electron-rich microenvironment via surface curvature regulation. The HPCS-TPOS catalyst with a larger curvature structure showed higher Fe2+ regeneration efficiency (35.5%) compared to the HPCS-S catalyst (22.8%). The HPCS-TPOS also exhibited a higher H2O2 production rate (47.2 mmol L-1 h-1) surpassing state-of-the-art e-Fenton catalysts. These findings provide new insights into the design of efficient catalysts for wastewater treatment by regulating curvature structures.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Kuldeep Roy, Vijayanand S. Moholkar
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Acoustics
Niharika Kashyap, Kuldeep Roy, Vijayanand S. Moholkar
ULTRASONICS SONOCHEMISTRY
(2020)
Article
Thermodynamics
Debarshi Mallick, Pinakeswar Mahanta, Vijayanand S. Moholkar
Article
Engineering, Chemical
Sankar Chakma, Pritam Kumar Dikshit, Manju Nagar Galodiya, Ardhendu Sekhar Giri, Vijayanand S. Moholkar
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2020)
Article
Energy & Fuels
Puneet Pathak, Ankush Gupta, Nishi Kant Bhardwaj, Arun Goyal, Vijayanand Suryakant Moholkar
Summary: This study focuses on the impact of formic acid-based organosolv (FAOS) pretreatment on sugarcane tops (SCT) for biomass fractionation. The best conditions for FAOS pretreatment of SCT were found to be 125 degrees Celsius pretreatment temperature, 90 min pretreatment time, and 1:7.5 solid to liquid ratio. Temperatures and times higher than these values adversely affected SCT fractionation.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Chemical
Kuldeep Roy, Chandrodai Agarkoti, Ritesh S. Malani, Binota Thokchom, Vijayanand S. Moholkar
CHEMICAL ENGINEERING SCIENCE
(2020)
Article
Biochemical Research Methods
Mohanapriya Nedumaran, Shweta Singh, Sumitha Banu Jamaldheen, Riyanka Nath, Vijayanand Suryakant Moholkar, Arun Goyal
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Kedar Sharma, Kaustubh Chandrakant Khaire, Abhijeet Thakur, Vijayanand Suryakant Moholkar, Arun Goyal
Article
Agricultural Engineering
Shweta Singh, Vikky Rajulapati, Sumitha Banu Jamaldheen, Vijayanand Suryakant Moholkar, Arun Goyal
INDUSTRIAL CROPS AND PRODUCTS
(2020)
Article
Energy & Fuels
Harrison Hihu Muigai, Urbashi Bordoloi, Rojimul Hussain, Karangat Ravi, Vijayanand S. Moholkar, Pankaj Kalita
Summary: This study synthesized and characterized biochars produced from water hyacinth, yellow oleander, and sugarcane bagasse, comparing their properties at 350°C and 550°C. The biochar produced from sugarcane bagasse at 550°C showed the best properties among all feedstocks.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Dharmendra Kumar Bal, Jaykumar B. Bhasarkar
Summary: This study aimed to remove heavy metal compounds from wastewater using coconut shells as a bio-sorbent for the removal of hexavalent chromium Cr(VI). The Langmuir and Freundlich isotherm models were found to be the best fit for the experimental data, with adsorption capacities of 16.39 and 12.19 mg/g, respectively. The adsorption process was determined to be feasible and endothermic.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2021)
Article
Biochemical Research Methods
Kaustubh Chandrakant Khaire, Vijayanand Suryakant Moholkar, Arun Goyal
Summary: In this study, cellulose from sugarcane tops was extracted and characterized for purity, showing high purity suitable for bioethanol production. The separated cellulose demonstrated a fibrous structure, increased crystallinity index, and successful hydrolysis into total reducing sugar by specific enzymes, highlighting its potential as an alternative substrate for commercialization and bioethanol production.
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2021)
Review
Environmental Sciences
Rohit Chauhan, G. Kumaravel Dinesh, Bablu Alawa, Sankar Chakma
Summary: The paper focuses on the degradation of recalcitrant pollutants using the sono-photo-ferrioxalate system and provides a critical analysis of process parameters that influence mineralization efficiency. The primary operating parameters that affect the kinetics in the sono-photo-ferrioxalate system are solution pH, temperature, molar ratio of Fe3+/C2O42-, H2O2 concentration, source of light, ultrasound intensity, dissolved gases, and size of cavitation bubble. Multiple oxidizing radicals are generated in this system, such as HO center dot, HO2 center dot, C2O4 center dot-, CO2 center dot- and O-2(center dot-), contributing to degradation.
Proceedings Paper
Materials Science, Multidisciplinary
Praful Bansod, Shyam Kodape, Jaykumar Bhasarkar, Dinesh Bhutada
Summary: This study evaluated the use of ceramic membranes for glycerol separation from biodiesel and optimized the process parameters using response surface methodology. The results showed efficient glycerol retention under optimal conditions, complying with international standards.
MATERIALS TODAY-PROCEEDINGS
(2022)
