Article
Agricultural Engineering
Mathu Indren, Cristian H. Birzer, Stephen P. Kidd, Tony Hall, Paul R. Medwell
Summary: The study demonstrates that high dosages of pristine biochar can improve the performance of high-solids anaerobic digesters, while low dosages and re-used biochar may not have significant effects.
BIOMASS & BIOENERGY
(2021)
Article
Chemistry, Physical
Ikirsha Jokhio, Sundus Saeed Qureshi, Abdul Razzaq Sahito, Mehr-un-Nisa Qureshi, Imtiaz Ahmed Lashari, N. M. Mubarak, Manoj Tripathi, Amal M. Al-Mohaimeed, Mohamed S. Elshikh
Summary: The yield of bio-methane and bio-hydrogen was enhanced by co-digesting banana plant waste (BPW) and sewage sludge (SS). Acclimatisation of the inoculum SS was performed in a continuous stirred tank reactor (CSTR), and its various parameters were analyzed daily. Six different BPW to SS ratios were optimized and incubated in a manual methane potential test setup (MMPTS) for 40 days, with R4 (60% BPW and 40% SS) showing the highest yields. Furthermore, the best achieved ratio of BPW and SS was treated with different doses of NaOH as an alkaline pre-treatment, and the highest bio-methane yield was observed with dose 2 (0.75 mol NaOH) at 620.8 NmL/day. The study demonstrates the promising potential of co-digestion of BPW and SS for enhanced bio-methane and bio-hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Multidisciplinary
KeChrist Obileke, Golden Makaka, Nwabunwanne Nwokolo
Summary: In recent times, there has been a growing demand for the use of biomass as an alternative energy due to its sustainable nature. Anaerobic digestion and gasification have emerged as promising technologies for energy recovery from biomass. This review provides a comprehensive analysis of the combination of these technologies as a hybrid system for sustainable waste-to-energy generation. It highlights the need for intensifiers, additives, and enhancers to improve conversion efficiency, as well as the influence of temperature. The bibliometric study reveals China's leadership in waste-to-energy research and the potential for global implementation.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Environmental
Hasan Merdun, Zakari Boubacar Laouge, Ismail Veli Sezgin, Asli Seyhan Ciggin
Summary: Studies on evaluating sewage sludge as a feedstock for thermochemical processes have made significant progress. It is important to determine the stage of sewage sludge treatment for incorporating thermochemical processes into wastewater treatment plants and configuring the optimal process scheme. Pyrolysis is a crucial process for resource recovery, producing bio-oil and biochar. The aim of this study was to determine the optimal process scheme for pyrolysis of different sewage sludges, and the conditions for maximum bio-oil yield were investigated using thermogravimetric analysis.
Article
Environmental Sciences
Israel Bernardo S. Poblete, Ofelia de Queiroz F. Araujo, Jose Luiz de Medeiros
Summary: The study presents a two-stage sewage-water treatment process coupled with bioenergy production and carbon capture, which proves to be profitable and carbon-negative, demonstrating the feasibility of economically sustainable large-scale sewage-water treatment.
Article
Environmental Sciences
Juntao Yang, Songbiao Tang, Bing Song, Yujing Jiang, Wenlei Zhu, Weihong Zhou, Gaixiu Yang
Summary: A comprehensive evaluation of the integration of anaerobic digestion (AD) and pyrolysis was conducted to enhance energy recovery. The accumulative CH4 yields increased from 33.23 to 249.20 mL/g VS as the AD time increased from 3 to 15 days. The highest energy efficiency of 71.9% and net energy gain of 2.0 MJ/kg wet biomass were achieved by the coupled system optimization at an AD time of 12 days. This study provides new insight for the maximal conversion of biomass waste into energy products and offers a new way of recycling it.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Agricultural Engineering
Suyun Xu, Zihao Qiao, Liwen Luo, Yongqi Sun, Jonathan Woon-Chung Wong, Xueyu Geng, Jing Ni
Summary: The advantages of anaerobic digestion (AD) technology in organic solid waste treatment for bioenergy recovery are globally recognized. Attention has shifted towards on-site biogas research and biogenic CO2 sequestration from AD plants to achieve "carbon neutral". Various CO2 bioconversion technologies within AD systems offer promising solutions for reducing greenhouse gas emissions and increasing renewable energy recovery.
BIORESOURCE TECHNOLOGY
(2021)
Review
Agricultural Engineering
Anh Tuan Hoang, Jillian L. Goldfarb, Aoife M. Foley, Eric Lichtfouse, Manish Kumar, Leilei Xiao, Shams Forruque Ahmed, Zafar Said, Rafael Luque, Van Ga Bui, Xuan Phuong Nguyen
Summary: This paper reviews the application of biochar in anaerobic digestion systems. Biochar improves the efficiency of anaerobic digestion by adsorbing inhibitors, promoting biogas generation and methane concentration, maintaining process stability, and supporting microbial development.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Ranjna Sirohi, V. Vivekanand, Ashutosh Kumar Pandey, Ayon Tarafdar, Mukesh Kumar Awasthi, Amita Shakya, Sang Hyoun Kim, Sang Jun Sim, Hoang A. Tuan, Ashok Pandey
Summary: The transition from fossil fuels to non-conventional sources is necessary for addressing the global energy crisis and environmental issues. Organic waste from various industries can be utilized to produce gaseous fuels through different biochemical strategies. However, current biogas and biohydrogen production practices are inefficient and require interventions to improve biofuel yield. Adding biochar has been shown to enhance gaseous fuel production by adsorbing inhibitors and activating gas-producing microorganisms. This review explores the effect of biochar on gaseous biofuel production and highlights the need for a circular bioeconomy approach.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Engineering, Environmental
Pornwimon Wadchasit, Wantanasak Suksong, Sompong O-Thong, Kamchai Nuithitikul
Summary: A novel reactor was developed for simultaneous biogas production from solid and liquid anaerobic digestions, with the potential to enhance methane yields through temperature adjustments and NaOH pretreatment. The reactor showed similarities in bacterial and archaeal communities between the outer and inner digestions, and offered energy savings, cost reduction, and increased methane production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Marzieh Moradi, Mohsen Sadani, Abbas Shahsavani, Reza Bakhshoodeh, Nadali Alavi
Summary: The reduction of traditional fuel sources and the unpredictability of the global economy have led to a push for renewable energy alternatives. Waste recycling can significantly reduce greenhouse gas emissions. The study investigated the effects of different proportions of biochar on the efficiency of mesophilic anaerobic digestion of automotive paint sludge, and found that adding biochar increased biogas production and improved waste management.
Article
Acoustics
Ahmed El Nemr, Mohamed Aly Hassaan, Marwa Ramadan Elkatory, Safaa Ragab, Mohamed Ahmed El-Nemr, Luigi Tedone, Guisepe De Mastro, Antonio Pantaleo
Summary: This study proposes the use of biochar modified by sonication and ozonation as an additive for biogas production. The results show that sonication and ozonation treatment can enhance the biogas production process. The optimal conditions were achieved when adding 50 mg of sonication-treated biochar and 150 mg of ozonation-treated biochar.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Agronomy
Xiaohong Su, Jingbo Qu, Yan Huang, Wei Liu, Yong Sun
Summary: Reflux of biogas slurry is an effective way to reduce wastewater discharge. This study investigated the pretreatment of biogas slurry using microfiltration membrane and biochar adsorption. The results showed that the combination of 0.65 μm microfiltration and 7 g/L biochar had the best filtration and adsorption effects. The anaerobic co-digestion of the pretreated reflux fluid and corn stover resulted in advanced gas production and higher methane production.
Article
Green & Sustainable Science & Technology
Salome M. Duarte, Erika Sinisgalli, Ana J. Cavaleiro, Lorenzo Bertin, M. Madalena Alves, M. Alcina Pereira
Summary: This study demonstrates that biogas recirculation in the biogas-lift bioreactor facilitated the degradation of waste frying oils, most likely due to the selective enrichment of hydrogenotrophic methanogens.
Review
Green & Sustainable Science & Technology
F. Cheng, C. E. Brewer
Summary: Considerable amounts of organic waste are disposed of in landfills or by incineration, missing opportunities for energy and material applications. Extracting valuable components first from biomass feedstocks is crucial for managing environmental risks. Screening wastes for different conversion methods can enhance profitability and mitigate environmental risks.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)