Article
Chemistry, Analytical
Ali Bilgic, Aysel Cimen
Summary: This study compared the adsorption capacities of three nanoparticle adsorbents with different amino groups for the removal of toxic Cr(VI) metal ions. The results showed that nanoparticles with more amino groups had higher adsorption capacities. The equilibrium data fit well with pseudo-second-order and Langmuir models. In summary, the nanoparticle adsorbents have great potential for the effective removal of Cr(VI) metal ions and further studies on their adsorption capabilities with different amine groups are needed.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Mehpara Khatoon, Huma Ajab, Asim Yaqub, Muhammad Zia Ul Haq, Muhammad Junaid
Summary: This study explores the possibility of adsorbing Cr(VI) ions in tannery industrial effluent using a novel IDW@Fe3O4 nanocomposite. A simple and cost-effective co-precipitation method was used to synthesize the biosorbent. The characteristics and variation of the nanocomposite were analyzed using SEM, FT-IR, XRD, and TGA, confirming its feasibility for the targeted analyte. The optimized conditions achieved a removal efficiency of 92% for Cr(VI) ions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Cesar Mario Laureano-Anzaldo, Martin Esteban Gonzalez-Lopez, Aida Alejandra Perez-Fonseca, Luis Emilio Cruz-Barba, Jorge Ramon Robledo-Ortiz
Summary: This study demonstrates the enhancement of Cr(VI) uptake performance by supporting chitosan on a porous composite using APTES as a silanizing agent through a simple and green method. Batch and fixed-bed column adsorption experiments show high adsorption capacity and fast equilibrium rate of the silanized composite. In column regeneration, utilizing an alternative desorbing configuration minimizes the eluted volume and improves the behavior of the adsorbent in multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Xiao Tan, Yinjie Zhang, Meng Liu, Jinman Cao, Guilan Duan, Jun Cui, Aijun Lin
Summary: In this study, a novel layered double hydroxide was prepared through ultrasonic-assisted co-precipitation method, which can efficiently remove Cr(VI) contamination in water and has good removal effects at different pH ranges. The results of the study indicate that U-Fe/Al-LDH is a promising remediation agent and a feasible method for Cr(VI) removal.
Article
Engineering, Chemical
Jiacong Sun, Yating Luo, Jien Ye, Chunhui Li, Jiyan Shi
Summary: This study analyzed the chromium pollution characteristics of a typical chrome plating site, finding severe contamination by Cr with high concentrations of Cr(VI), related to plating processes and affected by soil properties. The results suggest the need for appropriate strategies to remediate contaminated soils and lay a foundation for future pollution investigation and risk assessment.
Article
Crystallography
N. G. Picazo-Rodriguez, F. R. Carrillo-Pedroza, Ma de Jesus Soria-Aguilar, Gabriela Baltierra, Gregorio Gonzalez, A. Martinez-Luevanos, Isaias Almaguer Guzman
Summary: In this study, jarosite was used as an adsorbent for the treatment of hexavalent chromium in wastewater from chrome plating industry. Without heat treatment, only 34% of chromium was removed. After thermal treatment at 600 degrees C, the adsorption capacity of jarosite improved, with a maximum removal rate of 53%.
Article
Water Resources
Ephraim Vunain, Joel Brian Njewa, Timothy Tiwonge Biswick, Adewale Kabir Ipadeola
Summary: Activated carbons prepared from rice husks and potato peels showed high efficiency in removing hexavalent chromium from tannery effluents, with adsorption process following pseudo-second-order kinetics and achieving optimal uptake at pH 2.0. RH-AC and PP-AC are effective adsorbents for chromium(VI) ions removal from wastewater.
APPLIED WATER SCIENCE
(2021)
Article
Environmental Sciences
Shiqi Han, Xuelei Zhou, Honghao Xie, Xiaohong Wang, Lingze Yang, Huili Wang, Chen Hao
Summary: In this study, a chitosan-based microsphere biosorbent with high adsorption capacity and short adsorption equilibrium time for hexavalent chromium was successfully prepared using an adsorption method.
Review
Environmental Sciences
Nazeer Abdul Azeez, Swati Sucharita Dash, Sathyanarayana Naidu Gummadi, Vijaykumar Sudarshana Deepa
Summary: This article discusses the pollution of the environment with toxic heavy metals due to industrialization and modern agricultural practices, with a focus on hexavalent chromium. Various methods, including nano and bioremediation, have been employed to reduce heavy metal concentrations, improving efficiency and lowering costs.
Article
Biochemistry & Molecular Biology
Chunzi Xu, Yunlan Xu, Dengjie Zhong, Haixing Chang, Jiaxin Mou, Hui Wang, Hongyu Shen
Summary: To improve the removal efficiency of Cr (VI) by chitosan, this study successfully synthesized a Zr4+ and glutaraldehyde crosslinked polyethyleneimine functionalized chitosan (CGPZ) composite. The adsorption process of Cr (VI) by CGPZ was found to be a spontaneous endothermic process controlled by entropy. The adsorbent showed good acid-base resistance and regeneration performance. CGPZ can synergistically adsorb Cr (VI) through electrostatic interaction and ion exchange, and then reduce Cr (VI) to Cr (III) and chelate Cr (III) through specific functional groups.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Applied
Chunzi Xu, Yunlan Xu, Dengjie Zhong, Haixing Chang, Jiaxin Mou, Hui Wang, Hongyu Shen
Summary: The Zr4+ cross-linked chitosan-thiourea composite was synthesized for the first time and showed excellent acid-base resistance, reusability, and high adsorption capacity for Cr(VI) removal.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Physical
Xiong Peng, Shujun Liu, Zhijia Luo, Xiwen Yu, Wanwen Liang
Summary: In this study, a novel nitrogen and sulfur functionalized 3D macroporous cellulose material (MPS) was successfully prepared and showed high removal efficiency and selectivity towards Cr(VI) in wastewater treatment. The presence of MoS42- in MPS contributed significantly to the selectivity. The results provide a new idea for the design of adsorbents with superior selectivity for removing Cr(VI).
Article
Environmental Sciences
Mohammed Ilyas Khan, Mohammed Khaloufa Almesfer, Abubakr Mustafa Elkhaleefa, Abdelfattah Aamary, Ismat Hassan Ali, Mohammed Zubair Shamim, Hamada Shoukry, Mohmmad Rehan
Summary: This study investigates the adsorption behavior of chromium (IV) ions using a novel FeCr-PANI adsorbent and successfully predicts the adsorption behavior using an artificial neural network model. The results show that process parameters such as temperature, pH, initial concentration, adsorbent dosage, and contact time have a significant influence on the adsorption process. The Langmuir isotherm model provides the best fit to the experimental data.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Ruixin Yan, Xiuping Feng, Long Kong, Qun Wan, Weilin Zheng, Takeshi Hagio, Ryoichi Ichino, Xinde Cao, Liang Li
Summary: A novel composite material FeS/HTs was synthesized and demonstrated high efficiency in removing hexavalent chromium from water. The superior adsorption capacity of FeS/HTs, attributed to the combination of abundant adsorption sites and powerful reduction properties, suggests potential applications in chromium removal.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Donghai Yuan, Chuyu Shang, Jun Cui, Wenjing Zhang, Yingying Kou
Summary: In this study, a novel modified Cu@MIL-53(Fe) material was successfully synthesized via solvothermal and calcination methods and applied for Cr(VI) removal. The batch experiments showed that Cu@MIL-53(Fe) had good removal effects on Cr(VI), and the most suitable models were determined using Langmuir adsorption isotherm and pseudo-second-order models.
ENVIRONMENTAL RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Nadeem Akhtar, Kanika Gupta, Dinesh Goyal, Arun Goyal
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2016)
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Engineering, Chemical
Nadeem Akhtar, Dinesh Goyal, Arun Goyal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2016)
Article
Thermodynamics
Nadeem Akhtar, Dinesh Goyal, Arun Goyal
ENERGY CONVERSION AND MANAGEMENT
(2017)
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Engineering, Chemical
Rajinder Kaur, Dinesh Goyal
PARTICULATE SCIENCE AND TECHNOLOGY
(2018)
Article
Environmental Sciences
Rajinder Kaur, Dinesh Goyal
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2016)
Review
Chemistry, Multidisciplinary
Ravneet Kaur, Dinesh Goyal
ENVIRONMENTAL CHEMISTRY LETTERS
(2019)
Review
Biochemical Research Methods
Prerna Khanna, Amrit Kaur, Dinesh Goyal
JOURNAL OF MICROBIOLOGICAL METHODS
(2019)
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Nanoscience & Nanotechnology
Purnima Sharma, Dinesh Goyal, Bhupendra Chudasama
MICRO & NANO LETTERS
(2019)
Article
Microbiology
Ravneet Kaur, Dinesh Goyal
CURRENT MICROBIOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Purnima Sharma, Dinesh Goyal, Manoj Baranwal, Bhupendra Chudasama
JOURNAL OF NANOPARTICLE RESEARCH
(2020)
Article
Environmental Sciences
Nadeem Akhtar, Kanika Gupta, Dinesh Goyal, Arun Goyal
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2019)
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Agricultural Economics & Policy
S. C. Bose, Ravi Kiran, Dinesh Goyal
CUSTOS E AGRONEGOCIO ON LINE
(2019)
Article
Agricultural Economics & Policy
S. C. Bose, Ravi Kiran, Dinesh Goyal
CUSTOS E AGRONEGOCIO ON LINE
(2018)
Article
Agricultural Economics & Policy
S. C. Bose, Ravi Kiran, Dinesh Goyal
CUSTOS E AGRONEGOCIO ON LINE
(2017)
Article
Biotechnology & Applied Microbiology
Aanchal, Nadeem Akhtar, Kanika, Dinesh Goyal, Arun Goyal
ROMANIAN BIOTECHNOLOGICAL LETTERS
(2016)