Article
Green & Sustainable Science & Technology
Neeraj Kumar Singh, Rajesh Singh
Summary: Despite biohydrogen production technology being available, increasing the theoretical hydrogen yield is still a challenge. This study demonstrates the potential of using a step-up applied potential in a SRB-BES to recover more hydrogen from pretreated rice straw and its by-products. By optimizing the applied potential, chain elongation of volatile fatty acids can be achieved, leading to the synthesis of desired fatty acids.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Hanna Virpiranta, Ville-Hermanni Sotaniemi, Tiina Leiviska, Sanna Taskila, Jaakko Ramo, D. Barrie Johnson, Juha Tanskanen
Summary: This study developed a biological method for the simultaneous removal of sulfate and metals from acidic low-temperature mining effluents using a mixed consortium of cold-tolerant sulfate-reducing bacteria. The experimental results showed that sulfate reduction rates increased with higher initial sulfate concentrations, indicating better adaptability of the sulfate-reducing bacterial consortium at higher sulfate concentrations.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Catherine J. Gandy, Neil D. Gray, Obioma K. Mejeha, Angela Sherry, Adam P. Jarvis
Summary: The study investigates the effectiveness of liquid carbon additions to enhance zinc removal in laboratory-scale short hydraulic residence time compost bioreactors. The results show that carbon supplementation is necessary to sustain effective removal of elevated zinc concentrations. Propionic acid addition improves and sustains performance by promoting the activities of sulfate reducing bacteria, leading to efficient zinc removal. On the other hand, cessation of propionic acid addition compromises zinc removal due to carbon limitation and the growth of sulfur oxidising bacteria. These findings demonstrate the potential of liquid carbon additions in enhancing rates of zinc attenuation in compost-based passive treatment systems with limited land availability, enabling remediation of highly polluting mine drainage.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Yun Liu, Antonio Serrano, Valentina Wyman, Esteban Marcellin, Gordon Southam, James Vaughan, Denys Villa-Gomez
Summary: This study demonstrated the different solubility of nickel and cobalt in the presence of sulfate reducing bacteria, with nickel remaining soluble while cobalt often precipitated as sulfide. Proteins identified in the experiments were found to play various roles in maintaining nickel homeostasis, functioning as metalloenzymes, and containing nickel-binding ligands. Specific species like Desulfomicrobium baculatum, Stenotrophomonas maltophilia, and Desulfovibrio magneticus were responsible for producing these proteins.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Guodong Chai, Dongqi Wang, Yitong Zhang, Hui Wang, Jiake Li, Xiaosheng Jing, Haiyu Meng, Zhe Wang, Yuan Guo, Chunbo Jiang, Huaien Li, Yishan Lin
Summary: This study investigated the effects of external organic substrates on the activity and stability of sulfate-reducing bacteria in acid mine drainage treatment. The results showed that microcosms containing complex organic wastes had a good effect on reducing heavy metals and acidity in acid mine drainage. Crab shell and shrimp shell showed the best removal performance and offered a cost-efficient, stable, and environmentally friendly solution for acid mine drainage treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Bahaa Hemdan, Vijay Kumar Garlapati, Swati Sharma, Sudipa Bhadra, Shivani Maddirala, K. M. Varsha, Vineela Motru, Pranab Goswami, Surajbhan Sevda, Tejraj M. Aminabhavi
Summary: Metals in industrial effluents pose a significant threat to the global environment due to their high toxicity, but innovative technologies like bioelectrochemical systems show promise in sustainable metal recovery. These technologies offer a more energy-efficient and environmentally friendly solution compared to traditional physical and chemical methods.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Analytical
Hui Wang, XiangHua Wang, Yitong Zhang, Dongqi Wang, Xizi Long, Guodong Chai, Zhe Wang, Haiyu Meng, Chunbo Jiang, Wen Dong, Yuan Guo, Jiake Li, Zhiqiang Xu, Yishan Lin
Summary: Bioelectrochemical system (BES) has been recognized as an effective technology for heavy metal wastewater (HMW) treatment. This study comprehensively reviews the removal mechanisms of HMW at the anodes and cathodes of BES, and discusses the effects of key factors on electricity generation performance and removal efficiency. Furthermore, the treatment effects of different BES systems and the recovery efficiencies of BES for sulfur and heavy metals are discussed.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Neeraj Kumar Singh, Rajesh Singh
Summary: This study investigated the impact of ammonia pre-treated electrodes on hydrogen production in a bioelectrochemical system enriched with sulfate-reducing bacteria. The results showed that the ammonia pre-treated electrodes inhibited the growth of methanogens, leading to higher hydrogen production efficiency, and the Richard model was the best-fitted model for cumulative hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
M. Danouche, A. Bounaga, R. Boulif, Y. Zeroual, R. Benhida, K. Lyamlouli
Summary: Phosphogypsum (PG) generated during phosphoric acid production contains a significant amount of sulfate, which can be biologically converted into sulfide. This study focuses on selecting and evaluating microbial consortia from sulfate-rich environments for the initial step of sulfur recovery. The MYC-consortium isolated from a hydrothermal niche showed the highest reduction capacity and performance under various conditions. This research provides insights into the potential of the MYC-consortium in converting sulfate from PG into sulfide, which is a critical step in sulfur biorecovery.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Environmental Sciences
Manoj Kumar, Moumita Nandi, Kannan Pakshirajan
Summary: Biological sulfide precipitation by sulfate reducing bacteria is an emerging technique for the recovery of heavy metals from metal contaminated wastewater, offering advantages such as low capital cost, ability to form highly insoluble salts, and capability to remove and recover heavy metals even at very low concentrations. The recovered metal sulfide nanoparticles can be applied in various fields, serving as an incentive for industries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Tianwei Hao
Summary: This study investigated the response and adaptation mechanisms of granular and flocculent sulfate-reducing bacteria (SRB) sludge to acidic metal-laden wastewater (AMW). The results showed that the flocculent SRB lost more than 50% of their treatment capacity, while the granular SRB maintained a high metal removal rate throughout the trial. The stability of the granular structure and microbial activity was found to be influenced by the extracellular glycosyl compositions.
Review
Engineering, Multidisciplinary
Ifeanyi Michael Smarte Anekwe, Yusuf Makarfi Isa
Summary: Pollution, especially acid mine drainage (AMD) caused by anthropogenic and industrial activities, is a major threat to the ecosystem. This study critically reviews various bioremediation methods for AMD contamination treatment and discusses their challenges and prospects. The research shows that bioremediation has proven effective and environmentally friendly, but large-scale application remains a challenge.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Yanrong Dong, Ziqing Gao, Junzhen Di, Dong Wang, Zhenhua Yang, Yunfeng Wang, Zhoufei Xie
Summary: In order to deal with the environmental pollution caused by heavy metals like Fe, Mn, Cu, and Cr, researchers enriched Sulfate Reducing Bacteria (SRB) in mining soil. Batch experiments were conducted by adding SRB to AMD with different concentrations of Fe, Mn, Cu, and Cr to explore SRB's potential in treating heavy metals. The results showed that SRB had strong removal ability for Fe and Cu, and also showed good removal effect for Cr. SRB could solidify Fe2+ and form precipitates mainly composed of FeS.
Article
Engineering, Environmental
Yishan Lin, Jessica A. Grembi, Sara S. Goots, Aswathy Sebastian, Istvan Albert, Rachel A. Brennan
Summary: Microbial communities in bioremediation systems treating acid mine drainage can significantly impact system performance, with crab shell substrates supporting higher alkalinity, sulfate-reducing rates, and metals removal. The diversity and stability of microbial communities associated with crab shell substrates contribute to effective AMD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Fan Yang, Weiwei Zhai, Zhongjian Li, Ying Huang, Maria Manzoor, Bin Yang, Yang Hou, Lecheng Lei, Xianjin Tang
Summary: The study developed a bioelectrochemical remediation system for immobilizing lead and cadmium in agricultural soil, where sulfate in underground water was efficiently reduced to sulfide by autotrophic sulfate-reducing bacteria. The system was effective for soils with different properties, and the most dominant SRB in the system was identified through 16S rRNA sequencing.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Mingming Zhang, Anton Timoshin, Essam A. Al-Ammar, Mika Sillanpaa, Guiju Zhang
Summary: The current paper proposes a new hybrid system based on a binary-geothermal system to generate power, cooling capacity, freshwater, and hydrogen. The system integrates organic Rankine cycle, ejector refrigeration cycle, proton exchange membrane electrolyzer, and reverse osmosis desalination unit. Through precise modeling in Matlab, the system's performance is optimized using multi-objective grey wolf optimization. Results show that the system can achieve high power output, cooling capacity, hydrogen production, and freshwater generation with cost-effectiveness.
Review
Green & Sustainable Science & Technology
Mokgehle R. Letsoalo, Thandiwe Sithole, Steven Mufamadi, Zvanaka Mazhandu, Mika Sillanpaa, Ajeet Kaushik, Tebogo Mashifana
Summary: The presence of pharmaceutical contaminants (PCs) in the environment, including water and aquatic life, is a continuous threat to human health and the natural cycle. In particular, the accumulation of non-degradable water-soluble residues in water streams and groundwater has raised serious concerns and is now a focus of the United Nations' Sustainable Development Goals 2030. This article explores the challenges and potential solutions for the selective detection and efficient remediation of PCs in wastewater using nano-enabled functional systems.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Heba Saed Kariem Alawamleh, Seyedsahand Mousavi, Danial Ashoori, Hayder Mahmood Salman, Sasan Zahmatkesh, Mika Sillanpaa
Summary: The study aims to improve the performance of membrane treatment for oily wastewater. The effects of pre-treatment, membrane modification, and operational parameters on the microfiltration membrane system were investigated. The results showed that using PFS as a coagulant at pH=6 can achieve a COD reduction of 98%, while using PFC at the same conditions only removes 81% of COD.
Article
Biochemistry & Molecular Biology
Atef El Jery, Hayder Mahmood Salman, Rusul Mohammed Al-Khafaji, Maadh Fawzi Nassar, Mika Sillanpaa
Summary: Hydrogen production using polymer membrane electrolyzers is an effective method for generating environmentally friendly energy. The study analyzed the performance of the electrolyzers in the water electrolysis process and investigated the impact of variables such as radiation intensity and current density on hydrogen production. Machine-learning-based predictions were also conducted to forecast efficiency and hydrogen production rate in different scenarios.
Article
Green & Sustainable Science & Technology
Rajesh Babu Katiyar, Suresh Sundaramurthy, Anil Kumar Sharma, Suresh Arisutha, Moonis Ali Khan, Mika Sillanpaa
Summary: Urbanization and population growth lead to a substantial increase in solid waste generation. Vermicomposting, which employs earthworms to recycle solid waste, proves to be a sustainable solution. This study explores the impact of earthworm-processed solid waste manure (vermicompost) on the growth, productivity, and chemical characteristics of chili and brinjal plants in different wooden reactors. The findings reveal that polyculture reactors with vermicompost soil exhibit significantly higher yields of both chili and brinjal compared to monoculture reactors.
Article
Chemistry, Physical
Sadia Aroob, Sonia A. C. Carabineiro, Muhammad Babar Taj, Ismat Bibi, Ahmad Raheel, Tariq Javed, Rana Yahya, Walla Alelwani, Francis Verpoort, Khanita Kamwilaisak, Saleh Al-Farraj, Mika Sillanpaa
Summary: In this study, CuO nanoparticles were synthesized by a simple, one-pot mechanochemical approach using the leaf extract of Seriphidium oliverianum as a reducing and stabilizing agent. The CuO NPs showed high potential for degrading water-soluble industrial dyes, with degradation rates of 65.231% +/- 0.242 for methyl green (MG) and 65.078% +/- 0.392 for methyl orange (MO). This bio-mechanochemically synthesized CuO NPs are promising candidates for efficient dye removal from water.
Article
Chemistry, Analytical
Kanthappa Bhimaraya, Jamballi G. Manjunatha, Karnayana P. Moulya, Ammar M. Tighezza, Munirah D. Albaqami, Mika Sillanpaa
Summary: The electrochemically polymerized glycine layered carbon paste electrode (EPGNLCPE) was used as an easy and rapid analytical tool for the analysis of levofloxacin (LN). The EPGNLCPE sensor, compared to the bare carbon paste electrode (BCPE), showed improved surface features and activities. Under optimized conditions, the differential pulse voltammetry method using EPGNLCPE exhibited good linearity, low limit of detection, and low limit of quantification for the analysis of LN. Real-time application of the sensor showed good recovery of LN in medicinal samples.
Article
Horticulture
Mervat A. Ali, Samir G. Farag, Mika Sillanpaa, Saleh Al-Farraj, Mohamed E. A. El-Sayed
Summary: The addition of superabsorbent polymers (SAPs) to soil improves soil properties and increases plant yields. The goal of the study was to investigate the effectiveness of SAPs in reducing mineral fertilizer usage and producing high-quality grapes. The study was conducted in a private vineyard in Egypt over three seasons and found that increasing the amount of applied polymer significantly enhanced bud burst, growth parameters, nutrient content, and yield.
Review
Engineering, Environmental
Thuhin Kumar Dey, Jingwei Hou, Mika Sillanpaa, Biplob Kumar Pramanik
Summary: Micro/nanoplastics (MPs/NPs) are widespread and pose a significant threat to the environment. Metal-organic frameworks (MOFs)-based membranes have gained attention for their potential in removing MPs/NPs from water and wastewater. However, challenges such as re-aggregation, cross-contamination, and poor structural stability need to be addressed for the successful application of MOF membranes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Abir Melliti, Murat Yilmaz, Mika Sillanpaa, Bechir Hamrouni, Radek Vurm
Summary: In this study, low-cost activated carbon (AC-DPF) made from date palm fiber waste was used to remove lead and copper from water systems. AC-DPF had a large surface area and high adsorption capacity, with removal efficiencies of 92% for Pb(II) and 80% for Cu(II). The adsorption kinetics and thermodynamics of AC-DPF were investigated, and competitive and antagonistic effects were observed in the multicomponent system. Overall, AC-DPF showed great potential as a highly promising, effective, and feasible adsorbent for heavy metal removal.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Anasheh Mardiroosi, Ali Reza Mahjoub, Amir Hossein Cheshme Khavar, Rabah Boukherroub, Mika Sillanpaeae, Parminder Kaur
Summary: This study synthesizes a variety of perovskite-type titanates (MTiO3, M = Zn, and Mn) and loads them onto functionalized magnetic graphene oxide (EDFG) to produce MTiO3 @EDFG nanocomposites. The materials were fully characterized, and the MTiO3 @EDFG nanocomposites were found to exhibit enhanced photocatalytic activity for the degradation of Rhodamine B under visible light irradiation. The enhanced activity was attributed to the inhibition of nanoparticle aggregation, improved electron transfer, increased surface area, and extended absorption range.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Biochemistry & Molecular Biology
Imran Ali, Anastasya Gaydukova, Tatiana Kon'kova, Zeid Abdullah ALOthman, Mika Sillanpaa
Summary: This study investigated the acid leaching process of grinding waste from a heat-resistant nickel alloy. Optimal conditions for acid dissolution were established to maximize the extraction of nickel, the main component of the alloy. These results are significant for industry professionals in metal recovery and environmentalists in waste treatment.
Article
Chemistry, Physical
Atef El Jery, Moutaz Aldrdery, Ujwal Ramesh Shirode, Juan Carlos Orosco Gavilan, Abubakr Elkhaleefa, Mika Sillanpaa, Saad Sh. Sammen, Hussam H. Tizkam
Summary: The shortage of water resources has led to extensive research in the development of effective and affordable wastewater treatment methods. In this study, a modified catalyst was synthesized using wet impregnation and the hydrothermal technique. The catalyst showed excellent performance in a heterogeneous quasi-electro-Fenton reaction and remained stable under different operational conditions. The findings of this study clarify the potential of the heterogeneous zeolite catalyst in wastewater treatment.
Article
Engineering, Environmental
Edris Rezaei, Behrouz Jafari, Mohsen Abbasi, Seyed Abdollatif Hashemifard, Shahriar Osfouri, Mahmoud Ramazani, Nadir Dizge, Mika Sillanpaa
Summary: The purpose of this study is to reuse greywater and prevent its release into the environment. The combined method of membrane and advanced oxidation was used to reduce the COD to the standard value. Ten types of membrane samples with different concentrations of kaolin, alumina, and calcium carbonate were prepared. The results showed that the addition of calcium carbonate increased the porosity and average pore size of the membrane.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Mohammad K. Okla, M. Kalil Rahiman, Mostafa A. Abdel-Maksoud, Ibrahim A. Alaraidh, Abdulrahman A. Alatar, Saud S. Al-amri, Hamada AbdElgawad, Mika Sillanpaa, S. Sudheer Khan
Summary: In this study, an n-p-n nanohybrid material was designed and synthesized, which consisted of ultrathin-Bi2WO6, CoFe2O4 nanosheets, spherical MnWO4, and carbon quantum dots. The experimental results demonstrated that the nanohybrid material exhibited excellent visible light absorption and efficient Cefixime photodegradation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
