1
|
Banerjee A, Dhal MK, Madhu K, Chah CN, Rattan B, Katiyar V, Sekharan S, Sarmah AK. Landfill-mined soil-like fraction (LMSF) use in biopolymer composting: Material pre-treatment, bioaugmentation and agricultural prospects. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 355:124255. [PMID: 38815894 DOI: 10.1016/j.envpol.2024.124255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 05/06/2024] [Accepted: 05/25/2024] [Indexed: 06/01/2024]
Abstract
Polylactic Acid (PLA) based compostable bioplastic films degrade under thermophilic composting conditions. The purpose of our study was to understand whether sample pre-treatment along with bioaugmentation of the degradation matrix could reduce the biodegradation time under a simulated composting environment. Sepcifically, we also explored whether the commercial composts could be replaced by landfill-mined soil-like fraction (LMSF) for the said application. The effect of pre-treatment on the material was analysed by tests like tensile strength analysis, hydrophobicity analysis, morphological analysis, thermal degradation profiling, etc. Subsequently, the degradation experiment was performed in a simulated composting environment following the ASTM D5338 standard, along with bioaugmentation in selected experimental setups. When the novel approach of material pre-treatment and bioaugmentation were applied in combination, the time necessary for 90% degradation was reduced by 27% using compost and by 23% using LMSF. Beyond the improvement in degradation rate, the water holding capacity increased significantly for the degradation matrices. With pH, C: N ratio and microbial diversity tested to be favourable through 16s metabarcoding studies, material pre-treatment and bioaugmentation allow LMSF to not only replace commercial compost in polymer degradation but also find immense application in the agricultural sector of drought-affected areas (for better water retention) after it has been used for PLA degradation.
Collapse
Affiliation(s)
- Arnab Banerjee
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India; Centre for Sustainable Polymers, Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Manoj Kumar Dhal
- Centre for Sustainable Polymers, Institute of Technology Guwahati, Guwahati, 781039, Assam, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Kshitij Madhu
- Centre for Sustainable Polymers, Institute of Technology Guwahati, Guwahati, 781039, Assam, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Charakho N Chah
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Bharat Rattan
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Vimal Katiyar
- Centre for Sustainable Polymers, Institute of Technology Guwahati, Guwahati, 781039, Assam, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Sreedeep Sekharan
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India; Centre for Sustainable Polymers, Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Ajit K Sarmah
- Department of Civil and Environmental Engineering, The Faculty of Engineering, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand; Centre for Sustainable Water Research, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
| |
Collapse
|
2
|
Tran HT, Binh QA, Van Tung T, Pham DT, Hoang HG, Hai Nguyen NS, Xie S, Zhang T, Mukherjee S, Bolan NS. A critical review on characterization, human health risk assessment and mitigation of malodorous gaseous emission during the composting process. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 351:124115. [PMID: 38718963 DOI: 10.1016/j.envpol.2024.124115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 04/30/2024] [Accepted: 05/03/2024] [Indexed: 05/12/2024]
Abstract
Composting has emerged as a suitable method to convert or transform organic waste including manure, green waste, and food waste into valuable products with several advantages, such as high efficiency, cost feasibility, and being environmentally friendly. However, volatile organic compounds (VOCs), mainly malodorous gases, are the major concern and challenges to overcome in facilitating composting. Ammonia (NH3) and volatile sulfur compounds (VSCs), including hydrogen sulfide (H2S), and methyl mercaptan (CH4S), primarily contributed to the malodorous gases emission during the entire composting process due to their low olfactory threshold. These compounds are mainly emitted at the thermophilic phase, accounting for over 70% of total gas emissions during the whole process, whereas methane (CH4) and nitrous oxide (N2O) are commonly detected during the mesophilic and cooling phases. Therefore, the human health risk assessment of malodorous gases using various indexes such as ECi (maximum exposure concentration for an individual volatile compound EC), HR (non-carcinogenic risk), and CR (carcinogenic risk) has been evaluated and discussed. Also, several strategies such as maintaining optimal operating conditions, and adding bulking agents and additives (e.g., biochar and zeolite) to reduce malodorous emissions have been pointed out and highlighted. Biochar has specific adsorption properties such as high surface area and high porosity and contains various functional groups that can adsorb up to 60%-70% of malodorous gases emitted from composting. Notably, biofiltration emerged as a resilient and cost-effective technique, achieving up to 90% reduction in malodorous gases at the end-of-pipe. This study offers a comprehensive insight into the characterization of malodorous emissions during composting. Additionally, it emphasizes the need to address these issues on a larger scale and provides a promising outlook for future research.
Collapse
Affiliation(s)
- Huu-Tuan Tran
- Laboratory of Ecology and Environmental Management, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Viet Nam.
| | - Quach An Binh
- Advanced Applied Sciences Research Group, Dong Nai Technology University, Bien Hoa City, Viet Nam; Faculty of Technology, Dong Nai Technology University, Bien Hoa City, Viet Nam
| | - Tra Van Tung
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Duy Toan Pham
- Department of Health Sciences, College of Natural Sciences, Can Tho University, Can Tho 900000, Viet Nam
| | - Hong-Giang Hoang
- Faculty of Technology, Dong Nai Technology University, Bien Hoa City, Viet Nam
| | - Ngoc Son Hai Nguyen
- Faculty of Environment, Thai Nguyen University of Agriculture and Forestry (TUAF), Thai Nguyen, 23000, Viet Nam
| | - Shiyu Xie
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Tao Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Santanu Mukherjee
- School of Biological & Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan 173229, India
| | - Nanthi S Bolan
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia; School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia
| |
Collapse
|
3
|
Zhu L, Tan C, Wang X, Liu L, Dong C, Qi Z, Zhang M, Hu B. Low-intensity alternating ventilation achieves effective humification during food waste composting by enhancing the intensity of microbial interaction and carbon metabolism. CHEMOSPHERE 2024; 357:142099. [PMID: 38653398 DOI: 10.1016/j.chemosphere.2024.142099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/10/2024] [Accepted: 04/20/2024] [Indexed: 04/25/2024]
Abstract
Vertical static composting is an efficient and convenient technology for the treatment of food waste. Exploring the impact of oxygen concentration levels on microbial community structure and functional stability is crucial for optimizing ventilation technology. This study set three experimental groups with varying ventilation intensities based on self-made alternating ventilation composting reactor (AL2: 0.2 L kg-1 DM·min-1; AL4: 0.4 L kg-1 DM·min-1; AL6: 0.6 L kg-1 DM·min-1) to explore the optimal alternating ventilation rate. The results showed that the cumulative ammonia emission of AL2 group reduced by 25.13% and 12.59% compared to the AL4 and AL6 groups. The humification degree of the product was 1.18 times and 1.25 times higher than the other two groups. AL2 increased the relative abundance of the core species Saccharomonospora, thereby strengthening microbial interaction. Low-intensity alternating ventilation increased the carbon metabolism levels, especially aerobic_chemoheterotrophy, carbohydrate and lipid metabolism. However, it simultaneously reduced nitrogen metabolism. Structural equation model analysis demonstrated that alternating low-intensity ventilation effectively regulated both microbial diversity (0.81, p < 0.001) and metabolism (0.81, p < 0.001) by shaping the composting environment. This study optimized the intensity of alternating ventilation and revealed the regulatory mechanism of community structure and metabolism. This study provides guidance for achieving efficient and low-consumption composting.
Collapse
Affiliation(s)
- Lin Zhu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, China; College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chunxu Tan
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xiaohan Wang
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Liyuan Liu
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chifei Dong
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhenyu Qi
- Agricultural Experiment Station, Zhejiang University, Hangzhou 310058, China
| | - Meng Zhang
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, China
| | - Baolan Hu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, China; College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, China.
| |
Collapse
|
4
|
Wang L, Chang R, Ren Z, Meng X, Li Y, Gao M. Mature compost promotes biodegradable plastic degradation and reduces greenhouse gas emission during food waste composting. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:172081. [PMID: 38554961 DOI: 10.1016/j.scitotenv.2024.172081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/27/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
Mature compost can promote the transformation of organic matter (OM) and reduce the emission of polluting gases during composting, which provides a viable approach to reduce the environmental impacts of biodegradable plastics (BPs). This study investigated the impact of mature compost on polybutylene adipate terephthalate (PBAT) degradation, greenhouse gas (GHG) emission, and microbial community structure during composting under two treatments with mature compost (MC) and without (CK). Under MC, visible plastic rupture was advanced from day 14 to day 10, and a more pronounced rupture was observed at the end of composting. Compared with CK, the degradation rate of PBAT in MC was increased by 4.44 % during 21 days of composting. Thermobifida, Ureibacillus, and Bacillus, as indicator species under MC treatment, played an important role in PBAT decomposition. Mature compost reduced the total global warming potential (GWP) by 25.91 % via inhibiting the activity of bacteria related to the production of CH4 and N2O. Functional Annotation of Prokaryotic Taxa (FAPROTAX) further revealed that mature compost addition increased relative abundance of bacteria related to multiple carbon (C) cycle functions such as methylotrophy, hydrocarbon degradation and cellulolysis, inhibited nitrite denitrification and denitrification, thus alleviating the emission of GHGs. Overall, mature compost, as an effective additive, exhibits great potential to simultaneously mitigate BP and GHG secondary pollution in co-composting of food waste and PBAT.
Collapse
Affiliation(s)
- Lingxiao Wang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Ruixue Chang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Zhiping Ren
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Xin Meng
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Yanming Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
| | - Miao Gao
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| |
Collapse
|
5
|
Tuli A, Suresh G, Halder N, Velpandian T. Analysis and remediation of phthalates in aquatic matrices: current perspectives. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:23408-23434. [PMID: 38456985 DOI: 10.1007/s11356-024-32670-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 02/23/2024] [Indexed: 03/09/2024]
Abstract
Phthalic acid esters (PAEs) are high production volume chemicals used extensively as plasticizers, to increase the flexibility of the main polymer. They are reported to leach into their surroundings from plastic products and are now a ubiquitous environmental contaminant. Phthalate levels have been determined in several environmental matrices, especially in water. These levels serve as an indicator of plasticizer abuse and plastic pollution, and also serve as a route of exposure to different species including humans. Reports published on effects of different PAEs on experimental models demonstrate their carcinogenic, teratogenic, reproductive, and endocrine disruptive effects. Therefore, regular monitoring and remediation of environmental water samples is essential to ascertain their hazard quotient and daily exposure levels. This review summarises the extraction and detection techniques available for phthalate analysis in water samples such as chromatography, biosensors, immunoassays, and spectroscopy. Current remediation strategies for phthalate removal such as adsorption, advanced oxidation, and microbial degradation have also been highlighted.
Collapse
Affiliation(s)
- Anannya Tuli
- High Precision Bio-Analytical Facility (DST-FIST Sponsored), Ocular Pharmacology and Pharmacy, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Gayatri Suresh
- High Precision Bio-Analytical Facility (DST-FIST Sponsored), Ocular Pharmacology and Pharmacy, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Nabanita Halder
- High Precision Bio-Analytical Facility (DST-FIST Sponsored), Ocular Pharmacology and Pharmacy, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Thirumurthy Velpandian
- High Precision Bio-Analytical Facility (DST-FIST Sponsored), Ocular Pharmacology and Pharmacy, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110029, India.
| |
Collapse
|
6
|
Tran TK, Nguyen MK, Lin C, Hoang TD, Nguyen TC, Lone AM, Khedulkar AP, Gaballah MS, Singh J, Chung WJ, Nguyen DD. Review on fate, transport, toxicity and health risk of nanoparticles in natural ecosystems: Emerging challenges in the modern age and solutions toward a sustainable environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169331. [PMID: 38103619 DOI: 10.1016/j.scitotenv.2023.169331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/21/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
In today's era, nanoparticles (NPs) have become an integral part of human life, finding extensive applications in various fields of science, pharmacy, medicine, industry, electronics, and communication. The increasing popularity of NP usage worldwide is a testament to their tremendous potential. However, the widespread deployment of NPs unavoidably leads to their release into the environmental matrices, resulting in persistence in ecosystems and bioaccumulation in organisms. Understanding the environmental behavior of NPs poses a significant challenge due to their nanoscale size. Given the current environmental releases of NPs, known negative consequences, and the limited knowledge available for risk management, comprehending the toxicity of NPs in ecosystems is both awaiting and crucial. The present review aims to unravel the potential environmental influences of nano-scaled materials, and provides in-depth inferences of the current knowledge and understanding in this field. The review comprehensively summarizes the sources, fate, transport, toxicity, health risks, and remediation solutions associated with NP pollution in aquatic and soil ecosystems. Furthermore, it addresses the knowledge gaps and outlines further investigation priorities for the sustainable control of NP pollution in these environments. By gaining a holistic understanding of these aspects, we can work toward ensuring the responsible and sustainable use of NPs in today's fast-growing world.
Collapse
Affiliation(s)
- Thien-Khanh Tran
- Advanced Applied Sciences Research Group, Dong Nai Technology University, Bien Hoa City 76100, Viet Nam; Faculty of Technology, Dong Nai Technology University, Bien Hoa City 76100, Viet Nam
| | - Minh-Ky Nguyen
- Faculty of Environment and Natural Resources, Nong Lam University, Hamlet 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam; Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Chitsan Lin
- Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Tuan-Dung Hoang
- School of Chemistry and Life Science, Hanoi University of Science and Technology, No. 1 Dai Co Viet, Hai Ba Trung, Hanoi 100000, Viet Nam; Vietnam National University, Hanoi, VNU Town, Hoa Lac, Thach That District, Hanoi 155500, Viet Nam
| | - Thanh-Cong Nguyen
- Faculty of Technology, Dong Nai Technology University, Bien Hoa City 76100, Viet Nam
| | - Aasif Mohmad Lone
- Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Akhil Pradiprao Khedulkar
- Department of Biomedical Engineering and Environmental Science, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Mohamed S Gaballah
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China; School of Engineering and Technology, Central Michigan University, Mt. Pleasant, MI 48859, USA
| | - Jagpreet Singh
- Department of Chemistry, University Centre for Research and Development, Chandigarh University, Gharuan, Mohali, 140413, India
| | - W Jin Chung
- Department of Civil & Energy System Engineering, Kyonggi University, Suwon 16227, South Korea
| | - D Duc Nguyen
- Department of Civil & Energy System Engineering, Kyonggi University, Suwon 16227, South Korea; Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City 700000, Viet Nam.
| |
Collapse
|
7
|
Pajura R. Composting municipal solid waste and animal manure in response to the current fertilizer crisis - a recent review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169221. [PMID: 38101643 DOI: 10.1016/j.scitotenv.2023.169221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
The dynamic price increases of fertilizers and the generation of organic waste are currently global issues. The growth of the population has led to increased production of solid municipal waste and a higher demand for food. Food production is inherently related to agriculture and, to achieve higher yields, it is necessary to replenish the soil with essential minerals. A synergistic approach that addresses both problems is the implementation of the composting process, which aligns with the principles of a circular economy. Food waste, green waste, paper waste, cardboard waste, and animal manure are promising feedstock materials for the extraction of valuable compounds. This review discusses key factors that influence the composting process and compares them with the input materials' parameters. It also considers methods for optimizing the process, such as the use of biochar and inoculation, which result in the production of the final product in a significantly shorter time and at lower financial costs. The applications of composts produced from various materials are described along with associated risks. In addition, innovative composting technologies are presented.
Collapse
Affiliation(s)
- Rebeka Pajura
- Department of Chemistry and Environmental Engineering, Faculty of Civil and Environmental Engineering and Architecture Rzeszow University of Technology, 35-959 Rzeszów, Ave Powstańców Warszawy 6, Poland.
| |
Collapse
|
8
|
Ghafghazi L, Taghavi L, Rasekh B, Farahani H, Hassani AH. Application of compost assisted by Fe 3O 4 nanoparticles in di (2-ethylhexyl) phthalate-contaminated soil remediation: Biostimulation strategy, Soil responses, and RSM/CCD Optimization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168029. [PMID: 37898188 DOI: 10.1016/j.scitotenv.2023.168029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/01/2023] [Accepted: 10/20/2023] [Indexed: 10/30/2023]
Abstract
Globally, contamination of agricultural soils by phthalate esters (PAEs) caused by direct consumption of plastic mulch films has been confirmed. The most widely used plasticizer is di (2-ethylhexyl) phthalate (DEHP), which is a more recalcitrant endocrine-disrupting chemical (EDC). Because of its low solubility and hydrophobicity, it remains in the soil longer, causes bioaccumulation in agricultural products, and has negative repercussions for food safety. In this study, the performance of kitchen organic waste compost assisted by Fe3O4 nanoparticles in DEHP removal efficiency (%) and soil C:N ratio (two responses) was optimized using Response Surface Methodology (RSM) based on Central Composite Design (CCD) in Design-Expert software (11.0.3.0). Under optimum conditions, a DEHP concentration of 10 mg·kg-1 (dw soil), a retention time of 35 days, an NPs dose of 0.99 g·kg-1 (media), a removal efficiency of 91.6 %, and a soil C:N ratio of 10.5 with a desirability of 0.963 were determined. A quadratic model (P-value <0.0001, adjusted R2 = 0.974 (Y1), 0.943 (Y2)) was used to predict the variables and their interactions. The agricultural soil responses in the treatments amended by compost and Fe3O4 NPs (SCN) showed a significant increase in SOM, TC, TN, AP, K, and Fe nutrients when compared to the control (P < 0.05). After 35 days, in the SC1N3 treatment (DEHP concentration = 10 mg·kg-1, NPs dose =1.2 g·kg-1), with higher DEHP removal efficiency (89.57 %), the C:N:P ratio was equal to 100: 9.75:0.69, and the total microbial colony count was 3.6 × 109 CFU/ml at pH 7.45. The study found that compost nutrients and Fe-based nanoparticle micronutrients can enhance DEHP degradation by stimulating the soil's native microflora. As a result, the synergistic potential of compost and Fe3O4 nanoparticles can be considered a promising, cost-effective, and agri-environmentally friendly approach in the "assisted bioremediation" strategy of DEHP-contaminated soils.
Collapse
Affiliation(s)
- Laleh Ghafghazi
- Department of Environmental Science and Forest, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University (SRBIAU), P. O. Box 14515-775, Tehran, Iran
| | - Lobat Taghavi
- Department of Environmental Science and Forest, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University (SRBIAU), P. O. Box 14515-775, Tehran, Iran.
| | - Behnam Rasekh
- Environment & Biotechnology Division, Research Institute of Petroleum Industry (RIPI), P. O. Box: 14665-137, Tehran, Iran
| | - Hadi Farahani
- Research Institute of Petroleum Industry (RIPI), P. O. Box 1485733111, Tehran, Iran
| | - Amir Hessam Hassani
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| |
Collapse
|
9
|
Le VG, Nguyen MK, Nguyen HL, Lin C, Hadi M, Hung NTQ, Hoang HG, Nguyen KN, Tran HT, Hou D, Zhang T, Bolan NS. A comprehensive review of micro- and nano-plastics in the atmosphere: Occurrence, fate, toxicity, and strategies for risk reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166649. [PMID: 37660815 DOI: 10.1016/j.scitotenv.2023.166649] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/11/2023] [Accepted: 08/26/2023] [Indexed: 09/05/2023]
Abstract
Micro- and nano-plastics (MNPs) have received considerable attention over the past 10 years due to their environmental prevalence and potential toxic effects. With the increase in global plastic production and disposal, MNP pollution has become a topic of emerging concern. In this review, we describe MNPs in the atmospheric environment, and potential toxicological effects of exposure to MNPs. Studies have reported the occurrence of MNPs in outdoor and indoor air at concentrations ranging from 0.0065 items m-3 to 1583 items m-3. Findings have identified plastic fragments, fibers, and films in sizes predominantly <1000 μm with polyamide (PA), polyester (PES), polyethylene terephthalate (PET), polypropylene (PP), rayon, polyethylene (PE), polystyrene (PS), polyvinyl chloride (PVC), polyacrylonitrile (PAN), and ethyl vinyl acetate (EVA) as the major compounds. Exposure through indoor air and dust is an important pathway for humans. Airborne MNPs pose health risks to plants, animals, and humans. Atmospheric MNPs can enter organism bodies via inhalation and subsequent deposition in the lungs, which triggers inflammation and other adverse health effects. MNPs could be eliminated through source reduction, policy/regulation, environmental awareness and education, biodegradable materials, bioremediation, and efficient air-filtration systems. To achieve a sustainable society, it is crucial to implement effective strategies for reducing the usage of single-use plastics (SUPs). Further, governments play a pivotal role in addressing the pressing issue of MNPs pollution and must establish viable solutions to tackle this significant challenge.
Collapse
Affiliation(s)
- Van-Giang Le
- Central Institute for Natural Resources and Environmental Studies, Vietnam National University (CRES-VNU), Hanoi, 111000, Viet Nam
| | - Minh-Ky Nguyen
- Faculty of Environment and Natural Resources, Nong Lam University of Ho Chi Minh City, Hamlet 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam; Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Hoang-Lam Nguyen
- Department of Civil Engineering, McGill University, Montreal, Canada
| | - Chitsan Lin
- Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Mohammed Hadi
- Department of Ocean Operations and Civil Engineering, Norwegian University of Science and Technology, Norway
| | - Nguyen Tri Quang Hung
- Faculty of Environment and Natural Resources, Nong Lam University of Ho Chi Minh City, Hamlet 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam
| | - Hong-Giang Hoang
- Faculty of Medicine, Dong Nai Technology University, Bien Hoa, Dong Nai 810000, Viet Nam
| | - Khoi Nghia Nguyen
- Department of Soil Science, College of Agriculture, Can Tho University, Can Tho City 270000, Viet Nam
| | - Huu-Tuan Tran
- Laboratory of Ecology and Environmental Management, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City 700000, Viet Nam; Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City 700000, Viet Nam.
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Tao Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Nanthi S Bolan
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6001, Australia; School of Agriculture and Environment, The University of Western Australia, Perth, WA 6001, Australia
| |
Collapse
|
10
|
Nguyen MK, Lin C, Nguyen HL, Le VG, Haddout S, Um MJ, Chang SW, Nguyen DD. Ecotoxicity of micro- and nanoplastics on aquatic algae: Facts, challenges, and future opportunities. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 346:118982. [PMID: 37741192 DOI: 10.1016/j.jenvman.2023.118982] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/22/2023] [Accepted: 09/09/2023] [Indexed: 09/25/2023]
Abstract
The production of plastic has exponentially increased in recent years, leading to the release of millions of tons of plastic waste into the environment annually. This waste can break down into smaller micro- and nanoplastics (MNPs) that are toxic and reactive to life forms, including humans. MNPs are particularly concerning for marine biologists and environmental scientists due to their toxic impacts on aquatic organisms, including algae, which are the foundation of the food chain. The review provides a comprehensive overview of the (eco)toxicity assessment of MNPs on aquatic algal communities, highlighting the novel insights gained into the ecotoxicity of various MNPs on algae and the associated health risks for aquatic ecosystems, food chains, and humans. This article also discusses current challenges and future research opportunities to address these challenges, making it a valuable contribution to the field of environmental science. Overall, this work is one of the first efforts to comprehensively assess the effects of MNPs on aquatic algae, emphasizing the significant risks that MNPs pose to essential ecosystems and human health.
Collapse
Affiliation(s)
- Minh-Ky Nguyen
- Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Faculty of Environment and Natural Resources, Nong Lam University, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Chitsan Lin
- Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Hoang-Lam Nguyen
- Department of Civil Engineering, McGill University, Montreal, Canada
| | - Van-Giang Le
- Central Institute for Natural Resources and Environmental Studies, Vietnam National University, Hanoi, 111000, Viet Nam
| | - S Haddout
- Department of Physics, Ibn Tofail University, Morocco
| | - Myoung-Jin Um
- Department of Civil & Energy System Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Soon W Chang
- Department of Civil & Energy System Engineering, Kyonggi University, 442-760, Republic of Korea
| | - D Duc Nguyen
- Department of Civil & Energy System Engineering, Kyonggi University, 442-760, Republic of Korea; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, HCM City 755414, Viet Nam.
| |
Collapse
|
11
|
Nguyen MK, Lin C, Nguyen HL, Le VR, Kl P, Singh J, Chang SW, Um MJ, Nguyen DD. Emergence of microplastics in the aquatic ecosystem and their potential effects on health risks: The insights into Vietnam. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118499. [PMID: 37480638 DOI: 10.1016/j.jenvman.2023.118499] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/11/2023] [Accepted: 06/22/2023] [Indexed: 07/24/2023]
Abstract
The increase of microplastic contamination in Vietnam is a growing concern due to various domestic, agricultural, and industrial activities. The use of plastic mulch and sludge application in agricultural farmland, textile production, daily consumer items, cleaning agents, and health/personal care products contribute significantly to the increasing microplastic pollution in the aquatic ecosystem. The concentration of microplastics reported in surface water ranged from 0.35 to 519,000 items m-3, with fibers and fragments being the most prevalent shapes. Notably, the high concentration of microplastics was observed in lakes, canals, and megacities such as Ha Noi and Ho Chi Minh City, which poses potential health risks to the local community via drinking-water supply and food chains. As an emerging pollutant, MPs are the transport vectors for contaminants in environmental matrices that act as a carrier of hazardous pollutants, release toxic compounds, and evenly aggregate/accumulate in biota. Recent studies have reported the presence of microplastics in various marine organisms, including fish and shellfish, highlighting the risk of ingestion of these particles by humans and wildlife. Thus, it is imperative to monitor microplastic contamination in the ecosystem to provide helpful information for the government and local communities. Efforts should be taken to reduce microplastic pollution at the source to minimize potential effects on ecological and health safety. This review paper emphasizes the urgent need for further research on microplastic pollution in Vietnam and highlights potential solutions to mitigate this emerging environmental threat. KEYWORKS: single-use plastics; microplastics; ecosystems; plastic waste; health risk; ecological and health safety; pollution mitigation.
Collapse
Affiliation(s)
- Minh-Ky Nguyen
- Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Faculty of Environment and Natural Resources, Nong Lam University, Ho Chi Minh City 700000, Viet Nam; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Chitsan Lin
- Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Hoang-Lam Nguyen
- Department of Civil Engineering, McGill University, Montreal, Canada
| | - Van-Re Le
- Ho Chi Minh City University of Food Industry (HUFI), Ho Chi Minh City, 700000, Viet Nam
| | - Priya Kl
- Department of Civil Engineering, TKM College of Engineering, Kollam 691005, India
| | - Jagpreet Singh
- Department of Chemistry, University Centre for Research & Development, Chandigarh University, Mohali, 140413, Punjab, India
| | - Soon W Chang
- Department of Civil & Energy System Engineering, Kyonggi University, Suwon, Republic of Korea
| | - Myoung-Jin Um
- Department of Civil & Energy System Engineering, Kyonggi University, Suwon, Republic of Korea
| | - D Duc Nguyen
- Department of Civil & Energy System Engineering, Kyonggi University, Suwon, Republic of Korea; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam.
| |
Collapse
|
12
|
Zhang Y, Gao Y, Xi B, Li Y, Ge X, Gong Y, Chen H, Chen J, Tan W, Yuan Y. Full life cycle and sustainability transitions of phthalates in landfill: A review. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 170:215-229. [PMID: 37717503 DOI: 10.1016/j.wasman.2023.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 08/26/2023] [Accepted: 09/12/2023] [Indexed: 09/19/2023]
Abstract
Phthalates (PAEs) are added to various products as a plasticizer. As these products age and are disposed of, plastic waste containing PAEs enters the landfill. The landfill environment is complicated and can be regarded as a "black box". Also, PAEs do not bind with the polymer matrix. Therefore, when a series of physical chemistry and biological reactions occur during the stabilization of landfills, PAEs leach from waste and migrate to the surrounding environmental media, thereby contaminating the surrounding soil, water ecosystems, and atmosphere. Although research on PAEs has achieved progress over the years, they are mainly concentrated on a particular aspect of PAEs in the landfill; there are fewer inquiries on the life cycle of PAEs. In this study, we review the presence of PAEs in the landfill in the following aspects: (1) the main source of PAEs in landfills; (2) the impact of the landfill environment on PAE migration and conversion; (3) distribution and transmedia migration of PAEs in aquatic ecosystems, soils, and atmosphere; and (4) PAE management and control in the landfill and future research direction. The purpose is to track the life cycle of PAEs in landfills, provide scientific basis for in-depth understanding of the migration and transformation of PAEs and environmental pollution control in landfills, and new ideas for the sustainable utilization of landfills.
Collapse
Affiliation(s)
- Yifan Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Yiman Gao
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Beidou Xi
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Yanjiao Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiaoyuan Ge
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Lan Zhou Jiao Tong University, Lanzhou 730070, China
| | - Yi Gong
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Beijing University of Chemical Technology, Beijing 100029, China
| | - Huiru Chen
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; North China University of Water Resources and Electric Power, Zheng Zhou 450046, China
| | - Jiabao Chen
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Wenbing Tan
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Ying Yuan
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| |
Collapse
|
13
|
Le VR, Nguyen MK, Nguyen HL, Lin C, Rakib MRJ, Thai VA, Le VG, Malafaia G, Idris AM. Organic composts as A vehicle for the entry of microplastics into the environment: A comprehensive review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 892:164758. [PMID: 37308024 DOI: 10.1016/j.scitotenv.2023.164758] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/06/2023] [Accepted: 06/06/2023] [Indexed: 06/14/2023]
Abstract
Plastic pollution is a widespread issue that poses a threat to agroecosystems. Recent data on microplastic (MP) pollution from compost and its application to soil have highlighted the potential impact of micropollutants that may be transferred from compost. Thus, we aim with this review to elucidate the distribution-occurrence, characterization, fate/transport, and potential risk of MPs from organic compost to gain comprehensive knowledge and mitigate the adverse impacts of compost application. The concentration of MPs in compost was up to thousands of items/kg. Among micropollutants, fibers, fragments, and films are the most common, with small MPs having a higher potential to absorb other pollutants and cause harm to organisms. Various synthetic polymers, including polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), polyester (PES), and acrylic polymers (AP), have been widely used of plastic items. MPs are emerging pollutants that can have diverse effects on soil ecosystems, as they can transfer potential pollutants from MPs to compost and then to the soil. Following the microbial degradation scheme, the transfer chain from plastics to compost to soil can be broken down into main stages, i.e., colonization - (bio)fragmentation - assimilation - and mineralization. Microorganisms and adding biochar play an essential role during composting, which can be an effective solution to enhance MP degradation. Findings have shown that stimulating free radical generation could promote the biodegradation efficacy of MPs and possibly remove their occurrence in compost, thereby reducing their contribution to ecosystem pollution. Furthermore, future recommendations were discussed to reduce ecosystem risks and health challenges.
Collapse
Affiliation(s)
- Van-Re Le
- Ho Chi Minh City University of Food Industry (HUFI), 140 Le Trong Tan Street, Tan Phu District, Ho Chi Minh City 700000, Viet Nam
| | - Minh-Ky Nguyen
- Faculty of Environment and Natural Resources, Nong Lam University of Ho Chi Minh City, Hamlet 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, Viet Nam; Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Hoang-Lam Nguyen
- Department of Civil Engineering, McGill University, Montreal, Canada
| | - Chitsan Lin
- Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan
| | - Md Refat Jahan Rakib
- Department of Fisheries and Marine Science, Faculty of Science, Noakhali Science and Technology University, Noakhali 3814, Bangladesh.
| | - Van-Anh Thai
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Van-Giang Le
- Central Institute for Natural Resources and Environmental Studies, Vietnam National University, Hanoi 111000, Viet Nam
| | - Guilherme Malafaia
- Post-Graduation Program in Ecology, Conservation, and Biodiversity, Federal University of Uberlândia, Uberlândia, MG, Brazil; Post-Graduation Program in Biotechnology and Biodiversity, Federal University of Goiás, Goiânia, GO, Brazil; Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute, Urutaí, GO, Brazil.
| | - Abubakr M Idris
- Department of Chemistry, College of Science, King Khalid University, 61431 Abha, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61421, Saudi Arabia
| |
Collapse
|
14
|
Chen K, Yu C, Cai L, Zhang W, Xing Y, Yang Y. Bacterial community succession in aerobic-anaerobic-coupled and aerobic composting with mown hay affected C and N losses. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27572-3. [PMID: 37204571 DOI: 10.1007/s11356-023-27572-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 05/08/2023] [Indexed: 05/20/2023]
Abstract
The primary objective of this work was to investigate how the dominant microbial species change and affect C and N losses under aerobic and aerobic-anaerobic-coupled composting of mown hay (MH, ryegrass) and corn stover (CS) mix. Results showed that C and N losses in aerobic compost of MH-CS were significantly decreased by 19.57-31.47% and 29.04-41.18%, respectively. 16S rRNA gene sequencing indicated that the bacterial microbiota showed significant differences in aerobic and aerobic-anaerobic-coupled composting. LEfSe analyses showed that aerobic composting promoted the growth of bacteria related to lignocellulosic degradation and nitrogen fixation, while aerobic-anaerobic-coupled composting promoted the growth of bacteria related to denitrification. Correlation analysis between bacterial community and environmental factors indicated that moisture content (MC) was the most important environmental factor influencing the differentiation of bacterial growth. KEGG analysis showed that aerobic composting enhanced the amino acid, carbohydrate, and other advantageous metabolic functions compared to that of aerobic-anaerobic-coupled composting. As a conclusion, the addition of 10-20% corn stover (w/w) to new-mown hay (ryegrass) appeared to inhibit anaerobic composting and prompt aerobic composting in MH-CS mix, which led to the effective utilization of mown hay as a resource for composting.
Collapse
Affiliation(s)
- Kaishan Chen
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Chenxu Yu
- Department of Agriculture and Biosystem Engineering, Iowa State University, Ames, 50010, USA
| | - Liqun Cai
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Wenming Zhang
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China.
| | - Yanhong Xing
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Yingxiang Yang
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| |
Collapse
|
15
|
Gautam P, Pandey AK, Dubey SK. Multi-omics approach reveals elevated potential of bacteria for biodegradation of imidacloprid. ENVIRONMENTAL RESEARCH 2023; 221:115271. [PMID: 36640933 DOI: 10.1016/j.envres.2023.115271] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/03/2023] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
The residual imidacloprid, a widely used insecticide is causing serious environmental concerns. Knowledge of its biodegradation will help in assessing its residual mass in soil. In view of this, a soil microcosm-based study was performed to test the biodegradation potential of Agrobacterium sp. InxBP2. It achieved ∼88% degradation in 20 days and followed the pseudo-first-order kinetics (k = 0.0511 day-1 and t1/2=7 days). Whole genome sequencing of Agrobacterium sp. InxBP2 revealed a genome size of 5.44 Mbp with 5179 genes. Imidacloprid degrading genes at loci K7A42_07110 (ABC transporter substrate-binding protein), K7A42_07270 (amidohydrolase family protein), K7A42_07385 (ABC transporter ATP-binding protein), K7A42_16,845 (nitronate monooxygenase family protein), and K7A42_20,660 (FAD-dependent monooxygenase) having sequence and functional similarity with known counterparts were identified. Molecular docking of proteins encoded by identified genes with their respective degradation pathway intermediates exhibited significant binding energies (-6.56 to -4.14 kcal/mol). Molecular dynamic simulation discovered consistent interactions and binding depicting high stability of docked complexes. Proteome analysis revealed differential protein expression in imidacloprid treated versus untreated samples which corroborated with the in-silico findings. Further, the detection of metabolites proved the bacterial degradation of imidacloprid. Thus, results provided a mechanistic link between imidacloprid and associated degradative genes/enzymes of Agrobacterium sp. InxBP2. These findings will be of immense significance in carrying out the lifecycle analysis and formulating strategies for the bioremediation of soils contaminated with insecticides like imidacloprid.
Collapse
Affiliation(s)
- Pallavi Gautam
- Molecular Ecology Laboratory, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Anand Kumar Pandey
- Department of Biotechnology Engineering, Institute of Engineering and Technology, Bundelkhand University, Jhansi, 284128, India
| | - Suresh Kumar Dubey
- Molecular Ecology Laboratory, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
| |
Collapse
|
16
|
Current Trends in Bioaugmentation Tools for Bioremediation: A Critical Review of Advances and Knowledge Gaps. Microorganisms 2023; 11:microorganisms11030710. [PMID: 36985282 PMCID: PMC10056695 DOI: 10.3390/microorganisms11030710] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
Bioaugmentation is widely used in soil bioremediation, wastewater treatment, and air biofiltration. The addition of microbial biomass to contaminated areas can considerably improve their biodegradation performance. Nevertheless, analyses of large data sets on the topic available in literature do not provide a comprehensive view of the mechanisms responsible for inoculum-assisted stimulation. On the one hand, there is no universal mechanism of bioaugmentation for a broad spectrum of environmental conditions, contaminants, and technology operation concepts. On the other hand, further analyses of bioaugmentation outcomes under laboratory conditions and in the field will strengthen the theoretical basis for a better prediction of bioremediation processes under certain conditions. This review focuses on the following aspects: (i) choosing the source of microorganisms and the isolation procedure; (ii) preparation of the inoculum, e.g., cultivation of single strains or consortia, adaptation; (iii) application of immobilised cells; (iv) application schemes for soil, water bodies, bioreactors, and hydroponics; and (v) microbial succession and biodiversity. Reviews of recent scientific papers dating mostly from 2022–2023, as well as our own long-term studies, are provided here.
Collapse
|
17
|
Nguyen MK, Lin C, Quang Hung NT, Hoang HG, Vo DVN, Tran HT. Investigation of ecological risk of microplastics in peatland areas: A case study in Vietnam. ENVIRONMENTAL RESEARCH 2023; 220:115190. [PMID: 36587718 DOI: 10.1016/j.envres.2022.115190] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/18/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
This study aims to investigate the distribution and ecological risk assessment of microplastics (MPs) in peatland areas located in Long An province, Vietnam's Mekong Delta. In general, polyvinyl chloride (60.7%), polyethylene (25.8%), and polypropylene (11.9%) were the most abundant polymers determined in the thirty sediment samples. The hazard index (HI) remarked a level of III for MPs contamination in Tan Thanh and Thanh Hoa districts. The pollution load index (PLI) and potential ecological risk index (RI) indicated that the contamination risk of MPs polymer types in the studied sites is relatively high. According to PLI values, MPs levels of peatlands in Tan Thanh and Thanh Hoa are high and moderate, respectively, while the peatland sediments in Duc Hue district are less contaminated. Furthermore, ecological risk indexes in the peatland areas were relatively high, with PLIoverall (level III); HIoverall (level V), and RIoverall (extreme danger). Hence, this study proposed a SWOT framework for challenges of MPs pollution in order to manage peatlands appropriately and minimize ecological risks. As a result, several practical strategies and appropriate approaches have been recommended to reduce microplastics towards a circular economy. These findings provide the initial quantitative assessment insights into hazard levels and ecological impacts of MPs in Vietnam's Mekong Delta peatlands.
Collapse
Affiliation(s)
- Minh Ky Nguyen
- Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Faculty of Environment and Natural Resources, Nong Lam University of Ho Chi Minh City, Hamlet 6, Linh Trung Ward, Thu Duc Dist., Ho Chi Minh City 700000, Viet Nam
| | - Chitsan Lin
- Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
| | - Nguyen Tri Quang Hung
- Faculty of Environment and Natural Resources, Nong Lam University of Ho Chi Minh City, Hamlet 6, Linh Trung Ward, Thu Duc Dist., Ho Chi Minh City 700000, Viet Nam
| | - Hong-Giang Hoang
- Faculty of Medicine, Dong Nai Technology University, Bien Hoa, Dong Nai 76100, Viet Nam
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, Ho Chi Minh City 700000, Viet Nam
| | - Huu-Tuan Tran
- Laboratory of Ecology and Environmental Management, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City 700000, Viet Nam; Faculty of Applied Technology, School of Engineering and Technology, Van Lang University, Ho Chi Minh City 700000, Viet Nam
| |
Collapse
|
18
|
Sun S, Tan Y, Wang L, Wu Z, Zhou J, Wu G, Shao Y, Wang M, Song Z, Xin Z. Improving the activity and expression level of a phthalate-degrading enzyme by a combination of mutagenesis strategies and strong promoter replacement. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:41107-41119. [PMID: 36630040 DOI: 10.1007/s11356-023-25263-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
Phthalic acid esters (PAEs) are widely used plasticizers found in consumer products, which enter the environment and pose severe threats to human health. Here, a new PAE-degrading enzyme EstJ6 was modified by combining mutagenesis strategies and a strong promoter replacement to improve its catalytic activity and expression level. Four mutants with enhanced activity were obtained by random mutation, among which EstJ6M1.1 exhibited the highest catalytic activity with an increase in catalytic activity by 2.9-fold toward dibutyl phthalate (DBP) than that of the wild-type (WT) enzyme. With these mutants as a template, a variant EstJ6M2 with 3.1-fold higher catalytic activity and 4.61 times higher catalytic efficiency (Kcat/Km) was identified by staggered extension PCR. Targeting four mutation sites of EstJ6M2, a variant EstJ6M3.1 was gained by site-directed saturation mutagenesis and displayed 4.3-fold higher activity and 5.97 times higher Kcat/Km than WT. The expression level of three mutants EstJ6M1.1, EstJ6M2, and EstJ6M3.1, as well as the WT, increased nearly threefold after a strong promoter replacement. These results provide a proof-theoretical basis and practicable pipeline for applying PAE-degrading enzymes.
Collapse
Affiliation(s)
- Shengwei Sun
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Yuzhi Tan
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Luyao Wang
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Zichao Wu
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Jingjie Zhou
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Guojun Wu
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Yuting Shao
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Mengxi Wang
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Zhe Song
- Instrumental Analysis Center of CPU, China Pharmaceutical University, Ministry of Education, Nanjing, 210009, People's Republic of China
| | - Zhihong Xin
- Key Laboratory of Food Processing and Quality Control, College of Food Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| |
Collapse
|
19
|
Viljoen SJ, Brailsford FL, Murphy DV, Hoyle FC, Chadwick DR, Jones DL. Leaching of phthalate acid esters from plastic mulch films and their degradation in response to UV irradiation and contrasting soil conditions. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130256. [PMID: 36327845 DOI: 10.1016/j.jhazmat.2022.130256] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/15/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Phthalate acid esters (PAEs) are commonly used plastic additives, not chemically bound to the plastic that migrate into surrounding environments, posing a threat to environmental and human health. Dibutyl phthalate (DBP) and di(2-ethylhexyl) phthalate (DEHP) are two common PAEs found in agricultural soils, where degradation is attributed to microbial decomposition. Yet the impact of the plastic matrix on PAE degradation rates is poorly understood. Using 14C-labelled DBP and DEHP we show that migration from the plastic matrix into soil represents a key rate limiting step in their bioavailability and subsequent degradation. Incorporating PAEs into plastic film decreased their degradation in soil, DBP (DEHP) from 79% to 21% (9% to <1%), over four months when compared to direct application of PAEs. Mimicking surface soil conditions, we demonstrated that exposure to ultraviolet radiation accelerated PAE mineralisation twofold. Turnover of PAE was promoted by the addition of biosolids, while the presence of plants and other organic residues failed to promote degradation. We conclude that PAEs persist in soil for longer than previously thought due to physical trapping within the plastic matrix, suggesting PAEs released from plastics over very long time periods lead to increasing levels of contamination.
Collapse
Affiliation(s)
- Samantha J Viljoen
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia; Environment Centre Wales, Bangor University, Bangor, Gwynedd LL57 2UW, UK.
| | - Francesca L Brailsford
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia
| | - Daniel V Murphy
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia
| | - Frances C Hoyle
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia
| | - David R Chadwick
- Environment Centre Wales, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Davey L Jones
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia; Environment Centre Wales, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| |
Collapse
|
20
|
Nguyen MK, Hadi M, Lin C, Nguyen HL, Thai VB, Hoang HG, Vo DVN, Tran HT. Microplastics in sewage sludge: Distribution, toxicity, identification methods, and engineered technologies. CHEMOSPHERE 2022; 308:136455. [PMID: 36116626 DOI: 10.1016/j.chemosphere.2022.136455] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/28/2022] [Accepted: 09/11/2022] [Indexed: 06/15/2023]
Abstract
Microplastic pollution is becoming a global challenge due to its long-term accumulation in the environment, causing adverse effects on human health and the ecosystem. Sludge discharged from wastewater treatment plants (WWTPs) plays a critical role as a carrier and primary source of environmental microplastic contamination. A significantly average microplastic variation between 1000 and 301,400 particles kg-1 has been reported in the sludge samples. In recent years, advanced technologies have been successfully applied to address this issue, including adsorption, advanced oxidation processes (AOPs), and membrane bioreactors (MBRs). Adsorption technologies are essential to utilizing novel adsorbents (e.g., biochar, graphene, zeolites) for effectively removing MPs. Especially, the removal efficiency of polymer microspheres from an aqueous solution by Mg/Zn modified magnetic biochars (Mg/Zn-MBC) was obtained at more than 95%. Also, advanced oxidation processes (AOPs) are widely applied to degrade microplastic contaminants, in which photocatalytic by semiconductors (e.g., TiO2 and ZnO) is a highly suitable approach to promote the degradation reactions owing to strongly hydroxyl radicals (OH*). Biological degradation-aided microorganisms (e.g., bacterial and fungal strains) have been reported to be suitable for removing microplastics. Yet, it was affected by biotic and abiotic factors of the environmental conditions (e.g., pH, light, temperature, moisture, bio-surfactants, microorganisms, enzymes) as well as their polymer characteristics, i.e., molecular weight, functional groups, and crystallinity. Notably, membrane bioreactors (MBRs) showed the highest efficiency in removing up to 99% microplastic particles and minimizing their contamination in sewage sludge. Further, MBRs illustrate the suitability for treating high-strength compounds, e.g., polymer debris and microplastic fibers from complex industrial wastewater. Finally, this study provided a comprehensive understanding of potential adverse risks, transportation pathways, and removal mechanisms of microplastic, which full-filled the knowledge gaps in this field.
Collapse
Affiliation(s)
- Minh Ky Nguyen
- Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung, 81157, Taiwan; Faculty of Environment and Natural Resources, Nong Lam University, Ho Chi Minh City, 700000, Viet Nam
| | - Mohammed Hadi
- Department of Ocean Operations and Civil Engineering, Norwegian University of Science and Technology, Norway
| | - Chitsan Lin
- Ph.D. Program in Maritime Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung, 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 81157, Taiwan.
| | - Hoang-Lam Nguyen
- Department of Civil Engineering, McGill University, Montreal, Canada
| | - Vu-Binh Thai
- Institute for Environment and Resource, Vietnam National University Ho Chi Minh City, Ho Chi Minh, 700000, Viet Nam
| | - Hong-Giang Hoang
- Faculty of Health Sciences and Finance - Accounting, Dong Nai Technology University, Bien Hoa, Dong Nai, 76100, Viet Nam
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, Ho Chi Minh City, 700000, Viet Nam
| | - Huu-Tuan Tran
- Laboratory of Ecology and Environmental Management, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Technology, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, 700000, Viet Nam.
| |
Collapse
|