Article
Forestry
Svetlana Bakhtina, Yulai Yanbaev, Aleksey Kulagin, Nina Redkina, Ilgam Masalimov, Shamil Fayzrakhmanov
Summary: The mining industry has caused the contamination of heavy metals in the environment, with Scots pine showing potential in cleaning polluted lands. However, the lack of nutrients has limited the growth of the trees. Further studies are needed to maximize the effectiveness of natural recovery in industrial lands.
JOURNAL OF FORESTRY RESEARCH
(2021)
Article
Environmental Sciences
Naif S. Aljohani, Radwan K. Al-Farawati, Ibrahim I. Shabbaj, Bandar A. Al-Mur, Yasar N. Kavil, Mohamed Abdel Salam
Summary: Halloysite nanoclay is effective in removing heavy metal ions and salinity with a pseudo-second-order kinetic model, leading to lower final concentrations compared to control and standard samples.
Article
Chemistry, Multidisciplinary
Sara Tehreem, Munazza Yousra, Khalid H. Alamer, Ibtisam M. Alsudays, Sair Sarwar, Asif Kamal, Sana Naeem
Summary: This study examined the efficiency of corn cob and sugarcane bagasse-derived biochar for removing metals (Pb, Ni, and Cu) from water. The optimal adsorption conditions were determined, and it was found that corn cob biochar had better metal removal activity compared to sugarcane bagasse biochar. The results suggest that these biochars can be used as cost-effective bio-adsorbents for heavy metal removal from wastewater.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2022)
Review
Environmental Sciences
Saravanan Rajendran, A. K. Priya, P. Senthil Kumar, Tuan K. A. Hoang, Karthikeyan Sekar, Kar Yeen Chong, Kuan Shiong Khoo, Hui Suan Ng, Pau Loke Show
Summary: This review quantitatively describes the viability of nano-adsorbent processing in wastewater detoxification by extracting heavy metal ions. It comprehensively evaluates the impact of nano-adsorbent functionalities on essential attributes and analyzes their limited resistance to adsorb some heavy metal ions. The study investigates experimental variables and separate models to understand the mechanism behind adsorption. The review highlights the different nano-based techniques and their potential applications in environmental remediation.
Article
Environmental Sciences
R. Gayathri, K. P. Gopinath, P. Senthil Kumar
Summary: In this study, ultrasonic assisted jujube seeds (UAJS) treated with sulphuric acid were experimented as adsorbents for removing Zn(II) and Pb(II) contaminated water. Results show that UAJS has higher adsorption capacity and is effective in treating industrial wastewater containing metal ions.
Article
Green & Sustainable Science & Technology
Riya Sawarkar, Adnan Shakeel, Piyush A. Kokate, Lal Singh
Summary: Rapid industrialization is a major cause of global land degradation and environmental problems, particularly due to coal-burning power stations releasing pollutants. This study evaluates the use of bamboo plantations, facilitated by organic amendments, for the bioremediation/phytoremediation of fly ash-degraded land. Results show that after two years of plantation, all physicochemical attributes of the degraded land improved considerably. Different bamboo species demonstrated varying phytoremediation mechanisms, with B. balcooa being the most effective for certain pollutants. Overall, bamboo plantations contributed to environmental restoration and carbon sequestration, making them a recommended solution for land degradation.
Article
Engineering, Chemical
Fan Yu, Yulu Du, Mingda Guo, Mengqian Zhao, Li Luo, Tianyou Cui, Shengyuan Deng, Mingjie Jin, Zhengyong Lyu, Xuwei Long
Summary: This study demonstrates the efficient removal of heavy metals from contaminated soil using biosurfactant surfactin through a micellar-enhanced ultrafiltration (MEUF) process. The surfactin can bind heavy metals through electrostatic interactions and then be rejected by the ultrafiltration membranes, resulting in over 98% removal of metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Donata Drapanauskaite, Kristina Buneviciene, Manoj Silva, Alvyra Slepetiene, Jonas Baltrusaitis
Summary: Anthropogenic solid waste can be a reactive substrate to adsorb and immobilize PO43- for enhancing sustainability. In this study, two types of calcium-rich solid waste were evaluated for their ability to adsorb PO43- from simulated wastewater streams, showing promising results. The release of heavy metals into the simulated wastewater was assessed and only one type of waste exceeded regulated concentrations.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Ceramics
Pinki Punia, R. K. Aggarwal, Rakesh Kumar, Rakesh Dhar, Preeti Thakur, Atul Thakur
Summary: This study investigated the adsorption of heavy metals (Cd and Cr) from industrial wastewater using a series of Ca-substituted nickel zinc nanoferrites (CaxNi0.4Zn0.6-xFe2O4 (x = 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6)) (CNZNFs). The effect of calcium doping and contact time on the adsorption of cadmium and chromium ions was examined, and the prepared nanoadsorbents showed high removal efficiencies for both Cd (98.25%) and Cr (51%) ions. Structural analysis confirmed the formation of spinel structured nanoparticles with varying crystallite size and porosity depending on the calcium concentration. The adsorption data was well fitted by the pseudo second order kinetic model and Langmuir isotherm model, with high adsorption efficiencies of Cd (128.20 mg/g) and Cr (23.54 mg/g) observed. The Langmuir isotherm model showed better fitting than the Freundlich isotherm model due to higher correlation coefficients for both heavy metals.
CERAMICS INTERNATIONAL
(2022)
Article
Environmental Sciences
Parul Sundha, Nirmalendu Basak, Arvind Kumar Rai, Priyanka Chandra, Sandeep Bedwal, Gajender Yadav, Rajender Kumar Yadav, Parbodh Chander Sharma
Summary: This study investigates the physicochemical properties and heavy metal variations in sludge from sewage treatment plants in industrial and non-industrial cities in Haryana, India. The results show that the sludge from industrial sites has higher concentrations of Cd, Ni, and Cr, and poses a higher ecological risk compared to sludge from non-industrial sites. pH, total carbon, and phosphorus are important factors controlling the binding and removal of heavy metals in sludge.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Afnan S. Batubara, Hamad M. Adress Hasan, Mohammed A. Abel Moniem, Mamdouh S. Masoud, Alaa-Eldin R. Mostafa, Mohammed Gamal, Mohamed A. Elsayed
Summary: This study successfully purified contaminated water containing dyes and heavy metals using a low-cost adsorbent made from waste materials. The optimum conditions for adsorption were pH values of 6 to 7, and the adsorption capacity of activated carbon increased with increasing contact time. By utilizing inexpensive waste materials as adsorbents and applying them in water purification, the feasibility of using treated natural wastes has been confirmed.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Shannon A. Plunkett, Chris S. Eckley, Todd P. Luxton, Mark G. Johnson
Summary: This study evaluated the effects of different types and treatments of biochar on the bioavailability of lead in soils with various sources of contamination. Results showed that adding biochar to upland soils can reduce the bioaccessibility of lead, while the redox status in wetland soils has a greater impact on lead bioaccessibility.
Article
Chemistry, Physical
Anil Kumar Sakhiya, Virendra Kumar Vijay, Priyanka Kaushal
Summary: Heavy metal pollution in groundwater is a significant concern for human health in the Indo-Gangetic Plain of India. Rice straw burning is a major issue due to the lack of feasible utilization options. This study explores the production of biochar from rice straw and its potential for removing manganese and arsenic from water.
SURFACES AND INTERFACES
(2023)
Article
Environmental Sciences
Annah Moyo, Anita Parbhakar-Fox, Sebastien Meffre, David R. Cooke
Summary: The potential reuse of alkaline industrial wastes, such as green liquor dregs, wood ashes, coal ash, red mud, and shell remains, for controlling acid and metalliferous drainage was evaluated in this study. The results showed that these wastes can limit the formation of acidic drainage and immobilize metal(loid)s through precipitation. However, certain oxyanions were leached in concentrations exceeding guidelines due to their mobility in alkaline conditions. Overall, the study highlighted the potential of alkaline industrial wastes in long-term remediation of acid and metalliferous drainage.
ENVIRONMENTAL POLLUTION
(2023)
Review
Polymer Science
Katarina Balikova, Bence Farkas, Peter Matus, Martin Urik
Summary: Biosorption is an effective technique for treating heavy-metal-bearing wastewaters, and xanthan and gellan are emerging as new green-based materials for the cost-effective and efficient remediation of heavy metal-contaminated waters.