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Bicalho SF, Pegoraro RF, Almeida Neta MN, Barroso AMF, França LO, Santos LS, Silva RR, Rodrigues MN, Sampaio RA, Viana LB. Biochemical changes, metal content, and spectroscopic analysis in sewage sludge composted with lignocellulosic residue using FTIR-MIR and FTIR-NIR. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:35727-35743. [PMID: 38740679 DOI: 10.1007/s11356-024-33652-9] [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: 03/07/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
The use of lignocellulosic residues, originating from sawdust, in composting sewage sludge for organic fertilizer production, is a practice of growing interest. However, few studies have explored the effect of the proportion of sawdust and sewage sludge raw materials on composting performance in the humification process. This study assessed the addition of sawdust in the sewage sludge composting process, regarding carbon content, presence of heavy metals, and humification of the organic compost. The experimental design employed was a randomized complete block design with five treatments featuring different proportions of organic residues to achieve C/N ratios between 30-1 (T1: 100% sewage sludge and 0% sawdust, T2: 86% sewage sludge and 14.0% sawdust, T3: 67% sewage sludge and 33% sawdust, T4: 55% sewage sludge and 45% sawdust, and T5: 46.5% sewage sludge and 53.5% sawdust) and five replications, totaling 25 experimental units. The addition of lignocellulosic residue in sewage sludge composting increased the levels of TOC and the C/N ratio, reduced the levels of pH, P, N, Na, Ba, and Cr, and did not interfere with the levels of K, Ca, Mg, S, CEC, labile carbon, and metals Fe, Zn, Cu, Mn, Ni, and Pb. The increase in the proportion of sawdust residue favored the degradation of aliphatic groups, increasing the presence of aromatic structures and reducing humification at the end of composting. The use of sawdust as a lignocellulosic residue in sewage sludge composting is a viable and efficient alternative to produce high-quality organomineral fertilizers.
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Affiliation(s)
| | - Rodinei Facco Pegoraro
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Av. Universitária 1000, Montes Claros, MG, 39400-090, Brazil
| | - Maria Nilfa Almeida Neta
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Av. Universitária 1000, Montes Claros, MG, 39400-090, Brazil.
| | - Aline Martins Ferreira Barroso
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Av. Universitária 1000, Montes Claros, MG, 39400-090, Brazil
| | - Letícia Oliveira França
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Av. Universitária 1000, Montes Claros, MG, 39400-090, Brazil
| | - Leandro Soares Santos
- Universidade Estadual Do Sudoeste da Bahia, UESB. BR 415, Itapetinga, BA, 45700-000, Brazil
| | | | - Márcio Neves Rodrigues
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Av. Universitária 1000, Montes Claros, MG, 39400-090, Brazil
| | - Regynaldo Arruda Sampaio
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Av. Universitária 1000, Montes Claros, MG, 39400-090, Brazil
| | - Lucas Barbosa Viana
- Universidade Federal de Minas Gerais, Instituto de Ciências Agrárias, Av. Universitária 1000, Montes Claros, MG, 39400-090, Brazil
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Padhan K, Patra RK, Sethi D, Mohanty S, Sahoo SK, Panda N, Pattanayak SK, Patra AK. Exploitation of cellulose degrading bacteria in bioconversion of agro-wastes. CHEMOSPHERE 2024; 347:140654. [PMID: 37952818 DOI: 10.1016/j.chemosphere.2023.140654] [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: 10/27/2023] [Accepted: 11/06/2023] [Indexed: 11/14/2023]
Abstract
The issue of solid waste management has become worse as a result of rapid demographic growth and rising urbanisation. Therefore economical, efficient and quick yielding techniques are essential. In this study, composting of agro-wastes i.e., paddy straw, maize stover and vegetable waste with three strains of cellulolytic bacteria (CBC9, CBD4 and CBG2) was performed. The results showed that the C:N ratio of matured compost produced from bacterial inoculation ranged from 14-17:1, nitrification index (NI) ranged from 0.35 to 0.45, Cation exchange capacity (CEC) ranged from 76 to 88 cmol (P+) kg-1, whereas, total N, P and K content of composts increased by 75-127 %, 20-175% and 42-94%, respectively. The recovery of compost was highest in case of paddy straw compost (39%) produced from CBG2 inoculation which was followed by vegetable waste (38%) and maize stover compost (36%) produced from same bacterial inoculation. FT-IR, SEM and EDS studies suggested that final compost produced from inoculation of bacterial strain was more stabilized as compared to un-inoculated control, characterized by a decrease in aliphatic materials and an increase in aromatic groups, presumably related to bio-synthesis of humic substance.
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Affiliation(s)
- Kshitipati Padhan
- Department of Soil Science, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India
| | - Ranjan Kumar Patra
- Department of Soil Science, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India
| | - Debadatta Sethi
- Department of Soil Science, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India; Sugarcane Research Station, Odisha University of Agriculture and Technology, Nayagarh, Odisha, 752070, India.
| | - Shraddha Mohanty
- Department of Soil Science, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India
| | - Sanjib Kumar Sahoo
- Department of Soil Science, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India; College of Agriculture, Odisha University of Agriculture and Technology, Bhawanipatna, Odisha, 766001, India
| | - Narayan Panda
- Department of Soil Science, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India
| | - Sushanta Kumar Pattanayak
- Department of Soil Science, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India
| | - Alok Kumar Patra
- All India Coordinated Research Project on Integrated Farming Systems, Directorate of Research, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, 751003, India
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Ahamad L, Bhat AH, Kumar H, Rana A, Hasan MN, Ahmed I, Ahmed S, Machado RAR, Ameen F. From soil to plant: strengthening carrot defenses against Meloidogyne incognita with vermicompost and arbuscular mycorrhizal fungi biofertilizers. Front Microbiol 2023; 14:1206217. [PMID: 37389348 PMCID: PMC10300642 DOI: 10.3389/fmicb.2023.1206217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 05/11/2023] [Indexed: 07/01/2023] Open
Abstract
Introduction Sustainable agricultural practices for controlling crop pests are urgently needed to reduce the reliance on chemical pesticides, which have long-term detrimental effects on ecosystems. In this study, we assessed the effectiveness of arbuscular mycorrhizal fungi (AMF) and vermicompost (Vc) supplementation, alone and in combination, in mitigating the negative impacts of Meloidogyne incognita infestation on carrot (Daucus carota L.) growth, development, and physiology. Methods We measured different plant growth parameters such as plant height and biomass accumulation, several plant physiological parameters such as the levels of photosynthetic pigments, phenolics, and the activity of defense enzymes such as peroxidases and polyphenol oxidases, and evaluated the severity of Meloidogyne incognita nematode infestation on plants treated or not treated with vermicompost (Vc) and/or arbuscular mycorrhizal fungi (AMF). Results Our findings show that M. incognita significantly affects plant growth, biomass accumulation, and photosynthetic pigment and carotenoid content. The incorporation of Vc and AMF into the soil, either individually or in combination, significantly alleviates the negative effects of nematode infestation on carrot plants. This was accompanied by the induction of phenolic compounds and defense enzymes such as peroxidases (+15.65%) and polyphenol oxidases (29.78%), and by a reduction in the severity of nematode infestation on Vc and AMF-treated plants compared to nematode-infested plants. Principal component analysis (PCA) shows significant correlations between various of the studied parameters. In particular, we observed negative correlations between the application of AMF and Vc alone and in combination and disease severity, and positive correlations between plant growth, photosynthetic pigments phenol content, and activity of defense enzymes. Discussion Our study highlights the relevance of cultural practices and beneficial microorganisms for the sustainable and environmentally friendly management of agricultural pests.
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Affiliation(s)
- Lukman Ahamad
- Section of Plant Pathology and Nematology, Department of Botany, Aligarh Muslim University, Aligarh, India
| | - Aashaq Hussain Bhat
- Department of Biosciences, University Center for Research and Development, Chandigarh University, Mohali, Punjab, India
- Experimental Biology Research Group, Faculty of Science, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Harendra Kumar
- Department of Zoology, J.S. University, Shikohabad, Uttar Pradesh, India
| | - Aasha Rana
- Department of Zoology, Faculty of Basic and Applied Sciences, Madhav University, Pindwara, Rajasthan, India
| | | | - Ishtiaq Ahmed
- Zoological Survey of India, F.P.S. Building, Kolkata, India
| | - Shakoor Ahmed
- Zoological Survey of India, New Alipore, Kolkata, India
| | - Ricardo A. R. Machado
- Experimental Biology Research Group, Faculty of Science, Institute of Biology, University of Neuchâtel, Neuchâtel, Switzerland
| | - Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
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Kumar R, Jha S, Singh SP, Kumar M, Kumari R, Padbhushan R. Organic waste recycling by vermicomposting amended with rock phosphate impacts the stability and maturity indices of vermicompost. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2023:1-15. [PMID: 37104721 DOI: 10.1080/10962247.2023.2207504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/21/2023] [Accepted: 04/14/2023] [Indexed: 06/08/2023]
Abstract
Recycling organic waste can help the land be nourished, properly disposed of, and protected from the negative impacts of chemical fertilizers. Organic additions like vermicompost can help restore and preserve the quality of the soil, however, producing vermicompost of a high enough standard is difficult. This study was planned to prepare vermicompost by utilizing two different organic wastes viz. household waste and organic residue amended with rock phosphate and further evaluate their stability and maturity indices during vermicomposting for quality of produce. For this study, the organic wastes were collected and vermicompost was prepared by using earthworm (Eisenia fetida) and with or without enriching with rock phosphate. Results showed that pH, bulk density, and biodegradability index were decreased and water holding capacity and cation exchange capacity was increased with the gradual progress of composting starting from 30 to 120 days of sampling/composting (DAS). Initially (upto 30 DAS) water-soluble carbon and water-soluble carbohydrate increased with rock phosphate enrichment. The population of the earthworms and enzymatic activities (CO2 evolution, dehydrogenase, and alkaline phosphatase) were also increased on enriching with rock phosphate and with the progression of the composting period. Rock phosphate addition (enrichment) also reflected the higher content of phosphorus (106% and 120% for household waste and organic residue, respectively) in the final product of vermicompost. The vermicompost prepared from household waste and enriched with rock phosphate showed greater maturity and stability indices. Overall, this can be concluded that the maturity and stability of vermicompost depend on the substrate used and improves on enriching with rock phosphate.Implications: Our study concludes that the quality of vermicompost depends on different substrates, composting period, and enrichment with rock phosphate. The qualities of vermicompost were best found under household waste-based vermicompost enriched with rock phosphate. The efficiency of vermicomposting process using earthworms was found maximum for enriched and without enriched household-based vermicompost. The study also indicated that several stability and maturity indices are influenced by different parameters and hence cannot be determined by a single parameter. The addition of rock phosphate increased the cation exchange capacity, phosphorus content, and alkaline phosphatase. Nitrogen, zinc, manganese, dehydrogenase, and alkaline phosphatase were found higher under household waste-based vermicompost relative to organic residue-based vermicompost. All four substrates promoted earthworm growth and reproduction in vermicompost.
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Affiliation(s)
- Rajesh Kumar
- Department of Soil Science and Agricultural Chemistry, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India
- Department of Soil Science and Agricultural Chemistry, Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India
| | - Shankar Jha
- Department of Soil Science and Agricultural Chemistry, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India
| | - Shiveshwar Pratap Singh
- Department of Soil Science and Agricultural Chemistry, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India
| | - Mukesh Kumar
- Department of Soil Science and Agricultural Chemistry, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India
| | - Ragini Kumari
- Department of Soil Science and Agricultural Chemistry, Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India
| | - Rajeev Padbhushan
- Department of Soil Science and Agricultural Chemistry, Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India
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Different Species of Epigeic and Anecic Earthworms Cause Similarly Effective and Beneficial Biocomposting—A Case Study Involving the Pernicious Aquatic Weed Salvinia (Salvinia molesta, Mitchell). Life (Basel) 2023; 13:life13030720. [PMID: 36983875 PMCID: PMC10056073 DOI: 10.3390/life13030720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/08/2023] [Accepted: 02/28/2023] [Indexed: 03/09/2023] Open
Abstract
As reported recently by the present authors, vermicomposting by the epigeic earthworm Eisenia fetida transforms the highly ligninous and allelopathic aquatic weed salvinia (Salvinia molesta) into a benign organic fertilizer. The present study was carried out with four other earthworm species, including three epigeic species of different sizes and phytophagic habits: Eisenia andrei, Lumbricus rubillus, and Perionyx sansibaricus. One anecic species, with geophytophagous habits, was also explored for comparison: Drawida willsi. The objective was to see whether the type of salvinia transformation caused by E. fetida is a general phenomenon or whether there are significant differences in the nature of biocomposts generated by different earthworm species. Accordingly, the characteristics of the biocomposts separately generated by each of the six species mentioned above were assessed with UV-visible spectrophotometry, Fourier-transform infrared spectrometry, differential scanning calorimetry, thermogravimetry, and scanning electron microscopy. The studies reveal that, with minor variations, the biocomposting by all four species was able to remove the intransigence of salvinia and impart plant/soil-friendly attributes to it in substantial measures. All the findings obtained with different techniques corroborated each other in arriving at this conclusion. Hence, it can be said that, in general, biocomposting by earthworms takes away the toxicity of pernicious weeds such as salvinia, converting them into plant-friendly and soil-friendly biofertilizers.
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Shafique I, Andleeb S, Naeem F, Ali S, Tabassam T, Sultan T, Almas Abbasi M. Cow dung putrefaction via vermicomposting using Eisenia fetida and its influence on seed sprouting and vegetative growth of Viola wittrockiana (pansy). PLoS One 2023; 18:e0279828. [PMID: 36800331 PMCID: PMC9937483 DOI: 10.1371/journal.pone.0279828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 10/04/2022] [Indexed: 02/18/2023] Open
Abstract
The current research was conducted at Vermi-tech Unit, Muzaffarabad in 2018 to evaluate the efficacy of cow dung and vermicompost on seed sprouting, seedlings, and vegetative developmental parameters of Viola x wittrokiana (pansy). In the current study, vermicompost was produced using Eisenia fetida. Physicochemical parameters of vermicompost and organic manure were recorded before each experimentation. The potting experiment was designed and comprised of eight germination mediums containing different combinations of soil, sand, cow dung, and various concentrations of vermicompost such as 10% VC, 15% VC, 20% VC, 25% VC, 30% VC, and 35% VC. Seed sprouting and seedling developmental parameters were observed for 28 days while vegetative plant growth parameters were recorded after 10 weeks of transplantation in various vermicompost amended germination media. Pre and post-physicochemical analysis of germination media were also recorded to check their quality and permanency. The current findings showed that 30% VC germination media was an effective dose for early seed germination initiation and all seed germination parameters. However, the significant vegetative plant growth and flowering parameters of pansy occurred at 35% VC. Findings revealed that vermicompost not only enhanced the seed germination and growth of pansy but also improved soil health. These results indicate that vermicompost can be exploited as a potent bio-fertilizer for ornamental plant production.
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Affiliation(s)
- Irsa Shafique
- Department of Zoology, Microbial Biotechnology and Vermi-Technology Laboratory, Vermi-tech Unit, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
| | - Saiqa Andleeb
- Department of Zoology, Microbial Biotechnology and Vermi-Technology Laboratory, Vermi-tech Unit, University of Azad Jammu and Kashmir, Muzaffarabad, Pakistan
- * E-mail: ,
| | | | - Shaukat Ali
- Department of Zoology, GC University, Lahore, Pakistan
| | - Tauseef Tabassam
- Land Resources Research Institute, Pakistan Agricultural Research Council, Islamabad, Pakistan
| | - Tariq Sultan
- Land Resources Research Institute, Pakistan Agricultural Research Council, Islamabad, Pakistan
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Ashok Kumar K, Subalakshmi R, Jayanthi M, Abirami G, Vijayan DS, Venkatesa Prabhu S, Baskaran L. Production and characterization of enriched vermicompost from banana leaf biomass waste activated by biochar integration. ENVIRONMENTAL RESEARCH 2023; 219:115090. [PMID: 36529329 DOI: 10.1016/j.envres.2022.115090] [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: 10/16/2022] [Revised: 12/01/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Vermicomposting uses less energy and requires fewer infrastructures, and it is capable of restoring soil nutrition and carbon. Banana cultivation produces lots of trash in a single crop season, with 30 tonnes of waste generated per acre. The biodegradable fraction of banana leaf waste is thrown out in large quantities from temples, markets place wedding halls, hotels, and residential areas. Vermicomposting can be used for recovering lignin, cellulose, pectin, and hemicellulose from banana leaves. Earthworm digests organic materials with the enzymes produced in gut microflora. Biochar adds bulk to vermicomposting, increases its value as fertilizer. The goal of this study was to amend biochar (0, 2, 4 and 6%) with banana leaf waste (BLW) + cow dung (CD) in three different combinations (1:1, 2:1 and 3:1) using Eisenia fetida to produce enriched vermicompost. In the vermicompost with biochar groups, there were higher levels of physicochemical parameters, as well as macro- and micronutrient contents. The growth and reproduction of earthworms were higher in groups with biochar. A maximum of 1.82, 1.18 and 1.67% of total nitrogen, total phosphorus and total potassium was found in the final vermicompost recovered from BLW + CD (1:1) amended with 4% biochar; while the other treatments showed lower levels of nutrients. A lower C/N ratio of 18.14 was observed in BLW + CD (1:1) + 4% biochar followed by BLW + CD (1:1) + 2% biochar amendment (19.92). The FTIR and humification index studies show that degradation of organic matter has occurred in the final vermicompost and the substrates with 4% biochar in 1:1 combination showed better degradation and this combination can be used for nutrient rich vermicompost production.
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Affiliation(s)
- K Ashok Kumar
- Department of Biotechnology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, 600 117, Chennai, Tamil Nadu, India.
| | - R Subalakshmi
- Department of Biotechnology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, 600 117, Chennai, Tamil Nadu, India
| | - M Jayanthi
- Department of Biotechnology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, 600 117, Chennai, Tamil Nadu, India
| | - G Abirami
- Department of Biotechnology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, 600 117, Chennai, Tamil Nadu, India
| | - D S Vijayan
- Department of Civil Engineering, Aarupadai Veedu Institute of Technology, VMRF, Paiyanur, Chennai, 603104, Tamil Nadu, India
| | - S Venkatesa Prabhu
- Center of Excellence for Bioprocess and Biotechnology, Department of Chemical Engineering, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, Ethiopia
| | - L Baskaran
- Department of Botany, Annamalai University, Annamalai Nagar, Chidambaram, 608 002, Tamil Nadu, India; PG and Research Department of Botany, Government Arts College (Autonomous), Salem, 636 007, Tamil Nadu, India.
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Quadar J, Chowdhary AB, Dutta R, Angmo D, Rashid F, Singh S, Singh J, Vig AP. Characterization of vermicompost of coconut husk mixed with cattle dung: physicochemical properties, SEM, and FT-IR analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:87790-87801. [PMID: 35831646 DOI: 10.1007/s11356-022-21899-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
The present work evaluated the potential of vermicomposting in management of different ratios of coconut husk waste (CH) and cattle dung (CD) viz (waste: CD) 0:100 (CH0), 25:75 (CH25), 50:50 (CH50), 75:25 (CH75), and 100:0 (CH100) using Eisenia fetida for 120 days. The physicochemical properties were analyzed in vermicompost samples taken on the 0 and 120th day. Co-composting with cattle manure improved their acceptability for E. fetida as well as their physicochemical properties. In a 50:50 (CH50) ratio, the lowest mortality and maximum growth in terms of number and biomass of earthworms were observed. The results revealed that during pre-vermicompost to post-vermicompost, nutrients such as nitrogen, phosphorus, and sodium increased, whereas in all vermicomposting end products organic carbon and the C:N ratio decreased significantly. Except zinc, all heavy metals decreased significantly (p < 0.05) over initial in all the feed mixtures. Seed germination tests indicated that the mature and non-phytotoxic vermicompost has been formed at the end of the experiment. The Fourier transmission infrared spectroscopy (FT-IR) and scanning electron microscopic (SEM) images of vermicompost demonstrated the excellent maturity of the compost.
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Affiliation(s)
- Jahangeer Quadar
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India, 143005
| | - Anu Bala Chowdhary
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India, 143005
| | - Rahil Dutta
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India, 143005
| | - Deachen Angmo
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India, 143005
| | - Farhana Rashid
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India, 143005
| | - Sharanpreet Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India, 143005
| | - Jaswinder Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India, 143005
- P.G. Department of Zoology, Khalsa College, Amritsar, Punjab, India
| | - Adarsh Pal Vig
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India, 143005.
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Kumar N, Gedam P, Gupta SK. Investigating the dynamics of ammonia volatilisation and the role of additives in thermal digestion of food waste. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 323:116312. [PMID: 36261998 DOI: 10.1016/j.jenvman.2022.116312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/01/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Averting nutrient volatilisation in thermal treatment of organic waste is a challenging task. The dynamics of ammonia volatilisation and the role of additives in preventing the losses of nutrients in thermal digestion of food waste (FW) were explored. The experimental trials were performed in a convective dehydrator at different combinations of temperatures and airflow velocities. The study dictated that ammonia volatilisation rate increased with increase in temperature and airflow velocity. The losses reached to its peak during the initial drying period and then gradually declined in the falling rate period. An artificial intelligence-based random forest model was explored to precisely predict the ammonia losses during the drying process. The SEM-EDX images confirmed enhanced N (2.25%) in the alum treated end product compared to blank (N - 1.8%) and thus reveals alum induced mineralization of nutrients. Higher intensities of the N containing compounds peaks observed in FTIR spectra also supported the mineralization of nitrogen. XRD analysis indicated formation of stable ammonium compounds in the sample digested with alum. Cost benefit analysis of the alum aided digestion revealed that it enhances the nutrient retention and overall cost of N in the end product by ₹626/tonne. The study revealed high potential of alum in reducing the ammonia volatilisation and enhancing the agronomical value of nutrients in the thermal digestion process.
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Affiliation(s)
- Nitin Kumar
- Department of Environmental Science & Engineering, Indian Institute of Technology, (Indian School of Mines), Dhanbad, 826004, India
| | - Pratik Gedam
- Department of Environmental Science & Engineering, Indian Institute of Technology, (Indian School of Mines), Dhanbad, 826004, India
| | - Sunil Kumar Gupta
- Department of Environmental Science & Engineering, Indian Institute of Technology, (Indian School of Mines), Dhanbad, 826004, India.
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IndraKumar Singh S, Singh WR, Bhat SA, Sohal B, Khanna N, Vig AP, Ameen F, Jones S. Vermiremediation of allopathic pharmaceutical industry sludge amended with cattle dung employing Eisenia fetida. ENVIRONMENTAL RESEARCH 2022; 214:113766. [PMID: 35780853 DOI: 10.1016/j.envres.2022.113766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/09/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
The present study aims to vermiremediate allopathic pharmaceutical industry sludge (AS) amended with cattle dung (CD), in different feed mixtures (AS:CD) i.e (AS0) 0:100 [Positive control], (AS25) 25:75, (AS50) 50:50, (AS75) 75:25 and (AS100) 100:0 [Negative Control] for 180 days using earthworm Eisenia fetida. The earthworms could thrive and grow well up to the AS75 feed mixture. In the final vermicompost, there were significant decreases in electrical conductivity (29.18-18.70%), total organic carbon (47.48-22.39%), total organic matter (47.47-22.36%), and C: N ratio (78.15-54.59%). While, significant increases in pH (9.06-16.47%), total Kjeldahl nitrogen (69.57-139.58%), total available phosphorus (30.30-81.56%), total potassium (8.92-22.22%), and total sodium (50.56-62.12%). The heavy metals like Cr (50-18.60%), Cd (100-75%), Pb (57.14-40%), and Ni (100-50%) were decreased, whereas Zn (8.37-53.77%), Fe (199.03-254.27%), and Cu (12.90-100%) increased significantly. The toxicity of the final vermicompost was shown to be lower in the Genotoxicity analysis, with values ranging between (76-42.33%). The germination index (GI) of Mung bean (Vigna radiata) showed a value ranging between 155.02 and 175.90%. Scanning electron microscopy (SEM) analysis showed irregularities with high porosity of texture in the final vermicompost than in initial mixtures. Fourier Transform-Infrared Spectroscopy (FT-IR) spectra of final vermicompost had low peak intensities than the initial samples. The AS50 feed mixture was the most favorable for the growth and fecundity of Eisenia fetida, emphasizing the role of cattle dung in the vermicomposting process. Thus, it can be inferred that a cost-effective and eco-friendly method (vermicomposting) with the proper amendment of cattle dung and employing Eisenia fetida could transform allopathic sludge into a nutrient-rich, detoxified, stable, and mature vermicompost for agricultural purposes and further could serve as a stepping stone in the allopathic pharmaceutical industry sludge management strategies in the future.
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Affiliation(s)
- Soubam IndraKumar Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Waikhom Roshan Singh
- Manipur Pollution Control Board (MPCB), Imphal West, DC Office Complex, Imphal, 795001, Manipur, India
| | - Sartaj Ahmad Bhat
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
| | - Bhawana Sohal
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Namita Khanna
- Department of Physiology, Guru Gobind Singh Medical College, Baba Farid University of Health Sciences, Faridkot, 151203, Punjab, India
| | - Adarsh Pal Vig
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, Punjab, India; Punjab Pollution Control Board (PPCB), Vatavaran Bhawan, Nabha Road, Patiala, 147001, Punjab, India.
| | - Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Sumathi Jones
- Department of Pharmacology, Sree Balaji Dental College and Hospital, Pallikaranai, Chennai, 600100, India
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Sengupta S, Bhattacharyya K, Mandal J, Chattopadhyay AP. Complexation, retention and release pattern of arsenic from humic/fulvic acid extracted from zinc and iron enriched vermicompost. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 318:115531. [PMID: 35724573 DOI: 10.1016/j.jenvman.2022.115531] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/19/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Arsenic (As) is a highly poisonous heavy metal with major environmental ramifications. Inorganic components such as zinc (Zn) and iron (Fe), as well as organic vermicompost, have been used as management solutions, with limited attempts of using them together. The current study involved preparing non-enriched vermicompost as well as six distinct Zn and Fe enriched vermicomposts and analyzing their chemical composition using the standard procedures. Organic fractions from these seven vermicompost and arsenic polluted soils of West Bengal, India were recovered and separated into humic (HA) and fulvic acid (FA) fractions. Potentiometric titrations, viscometric assays, and visible spectrophotometry were used to characterize the HA and FA samples. In aqueous phase the stability constant (log K) of the complexes formed with As indicates that stability of FA extracted from enriched vermicompost V4 (Zn and Fe sulphate @ 10% w/w dry weight basis of composting substrates before application of vermiworms) was maximum as 10.20 with a mole ratio (x) value of 1.36. Fourier-transform infrared (FT-IR) spectroscopy and Scanning Electron Microscopy (SEM) studies confirmed the complexation of As with HA/FA. The release isotherm of As from the HA/FA complexes in the presence of competitive oxy-anions was found to follow the order of sulphate > nitrate > phosphate.
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Affiliation(s)
- Sudip Sengupta
- Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India; School of Agriculture, Swami Vivekananda University, Barrackpore, 700121, West Bengal, India
| | - Kallol Bhattacharyya
- Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India
| | - Jajati Mandal
- School of Science, Engineering and Environment, University of Salford, Manchester, M5 4WT, United Kingdom.
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Wang F, Yao W, Zhang W, Miao L, Wang Y, Zhang H, Ding Y, Zhu W. Humic acid characterization and heavy metal behaviour during vermicomposting of pig manure amended with 13C-labelled rice straw. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2022; 40:736-744. [PMID: 34334056 DOI: 10.1177/0734242x211035943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Aiming to reveal the humification process of organic waste and its contribution to the heavy metal behaviour affected by earthworm activity, it was studied about the variation of humic acid (HA) and heavy metal behaviour during vermicomposting of the mixed pig manure and 13C-labelled rice straw. The results showed that earthworms could well adapt to the culturing environment and feed organic matter for its growth and reproduction, the vermicomposting process increased the content of humic substances (HS), HA, and fulvic acid (FA) in substrate residues, but led to less transformation of HA into FA. The elemental, ultraviolet absorption spectroscopy, Fourier transform infrared (FTIR) and fluorescence excitation-emission matrix (EEM) analysis indicated that vermicomposting led to more aromatic structures and much higher humification degree in HA, whereas less protein, FA-like substances and plastein in HA. Vermicomposting could enhance the total Cu content and decrease Cu/Zn bioavailability in the substrate residues, and vermicomposting especially can help stabilize Cu in the substrate residues by forming more complexed HA-Cu.
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Affiliation(s)
- Feng Wang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou, China
| | - Wu Yao
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou, China
| | - Weiwen Zhang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou, China
| | - Lijuan Miao
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou, China
| | - Yifan Wang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou, China
| | - Hangjun Zhang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou, China
| | - Ying Ding
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou, China
| | - Weiqin Zhu
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou, China
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Recent advances in the treatment of lignin in papermaking wastewater. World J Microbiol Biotechnol 2022; 38:116. [PMID: 35593964 DOI: 10.1007/s11274-022-03300-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/04/2022] [Indexed: 10/18/2022]
Abstract
More than 695.7 million m3 of papermaking wastewater is discharged globally. It contains a mixture of complex pollutants, of which lignin is the major constituent (600-1000 mg/L) of papermaking black liquor, making it the second-largest energy-containing biomass globally and accounting for 47.4% and 59.4% of chemical oxygen demand (16,400 ± 120 mg/L) and chroma (3100 ± 22.32 mg/L) of papermaking wastewater. The complex process and dissolved pollutants are responsible for high pH, biochemical oxygen demand, chemical oxygen demand, total suspended solids, dark color, and toxicity. Papermaking wastewater has emerged as a substantial source of environmental pollution as the conventional wastewater treatment processes are high cost and seldom efficacious. This work introduces the shortcomings of the common treatment methods for papermaking wastewater and lignin, focusing on lignin biodegradation and discussing the metabolic pathways and application prospects of lignin-degrading microbial species. A comprehensive review of the existing lignin treatment methods has proposed that the reasonable amalgamation of biodegradation and various physicochemical techniques are environmentally friendly, sustainable, and economical. Lignin extraction from papermaking wastewater by technology combination is an effective approach to recover valuable organic materials and detoxify wastewater. This review focuses on recent breakthroughs and future trends in papermaking wastewater treatment and lignin removal, with special emphasis on biodegradation, recovery, and utilization of lignin, providing guidance for the mechanism exploration of lignin-degrading microorganisms and the optimization of high-value chemical production.
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Analysis of the Effectiveness of Green Waste Composting under Hyperbaric Conditions. SUSTAINABILITY 2022. [DOI: 10.3390/su14095108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Increasing global population growth has a significant impact on waste production. The European Union (EU) focuses on waste recycling, biological treatment, and reuse. In the case of biodegradable waste, a significant problem is the long process of material decomposition so that the product meets the requirements of national regulations and EU directives. The search for a way to accelerate this process is still ongoing. This study presents the composting process of green waste under hyperbaric conditions. Eight experiments, four with air exchange frequency tAE = 4 h and four experiments with tAE = 8 h were established. The experiments were conducted in four variants: 0 (atmospheric pressure) and overpressures 50, 100, and 200 kPa. They were carried out on the same input material characterized by the initial moisture content of 60% and a mass of 2000 g. During the composting of green waste, all parameters of the obtained product (moisture content, pH, loss on ignition (LOI), C:N ratio, nutrient content (P, K), and the respiratory activity of microorganisms (AT4)) were also evaluated. The most significant weight loss of the composted material was observed in the variant of an overpressure of 200 kPa (tAE = 4 h). The compost weight in relation to the original material decreased by 23.7%. The highest organic matter removal efficiency was obtained for the overpressure variants of 50 and 100 kPa (tAE = 4 h).
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Das D, Kalita N, Langthasa D, Faihriem V, Borah G, Chakravarty P, Deka H. Eisenia fetida for vermiconversion of waste biomass of medicinal herbs: Status of nutrients and stability parameters. BIORESOURCE TECHNOLOGY 2022; 347:126391. [PMID: 34838967 DOI: 10.1016/j.biortech.2021.126391] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/14/2021] [Accepted: 11/16/2021] [Indexed: 06/13/2023]
Abstract
Vermiconversion possibility of waste biomass of two medicinal herbs Zingiber officinale and Curcuma longa has been investigated. The Eisenia fetida, an epigeic earthworm was used in the vermicomposting process. The vermicomposting caused shifting in pH towards neutral range, reduction in electrical conductivity, total organic carbon, C/N and C/P ratios whereas1.8-2.73 folds enhancement in macronutrients (TKN, AP, T Ca and T Mg) and ash contents in the substrate mixture. The heavy metals and trace elements content in the vermicompost were found within 3.25-1380 mg/kg and are under the permissible limits of compost applications. Besides, high germination index value in the vermicompost extract indicates loss of phytotoxicity and safe agricultural application potential of the end product. Finally, enhanced growth in Eisenia fetida confirms the application potential of harvested waste biomass as the raw materials for vermiconversion process.
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Affiliation(s)
- Dhritashri Das
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India
| | - Nabajit Kalita
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India
| | - Dericka Langthasa
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India
| | - Vanlalhriet Faihriem
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India
| | - Glory Borah
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India
| | - Paramita Chakravarty
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India
| | - Hemen Deka
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India.
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Ganguly RK, Al-Helal MA, Chakraborty SK. Role of bioactive xenobiotics towards reproductive potential of Odontotermes longignathus through in silico study: An amalgamation of ecoinformatics and ecotechnological insights of termite mounds from a tropical forest, India. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 232:113275. [PMID: 35131584 DOI: 10.1016/j.ecoenv.2022.113275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/09/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
The present research study has evaluated the roles of different naturally occurring compounds in termite mounds of Odontotermes longignathus (GenBank Id: MZ542727.1) which facilitate to promote higher population growth of termites and subsequent biodegradation. The study has also monitored the change in physicochemical parameters along with the trend of biodegradation of complex organic carbon-based compounds like lignin, polysaccharides etc. and nitrogenous compounds from two different types of termite mounds such as developing (T1) and developed (T2) mounds. The GC MS profiling of mound samples have revealed the occurrence of different humic acids like organic materials in both T1 and T2 mound samples. Both the termite mounds have demonstrated a high population density as T1 (23.67 ± 1.56) individuals and T2 (43.51 ± 2.36) individuals per 0.1 kg of mound materials. Such observations have prompted to undertake molecular docking experiments which revealed that different molecules interact at low binding affinity with hormone receptors involved in moulting, spermatogenesis and oogenesis of termite like Adamantane carboxylate (EcR: -7.6 Kcal/mol; BTB-KLHL10: -6.2 Kcal/mol; USP-LBD: -7.3 Kcal/mol; VgR: -6.8 Kcal/mol), Benzene dicarboxylic acid (EcR: -5.5 Kcal/mol; BTB-KLHL10: -5.1 Kcal/mol; USP-LBD: -5.4 Kcal/mol; VgR: -5.6 Kcal/mol), Hexadecanol (EcR: -6.0 Kcal/mol; BTB-KLHL10: -4.4 Kcal/mol; USP-LBD: -6.9 Kcal/mol; VgR: -6.0 Kcal/mol), oxirane (EcR: -5.3 Kcal/mol; BTB-KLHL10: -4.9 Kcal/mol; USP-LBD: -5.2 Kcal/mol; VgR: -5.3 Kcal/mol) and tocopherol (EcR: -8.0 Kcal/mol; BTB-KLHL10: -5.4 Kcal/mol; USP-LBD: -7.6 Kcal/mol; VgR: -7.0 Kcal/mol). Such spontaneous ligand binding phenomenon coupled with high population density of termites have established the significance of different bioactive xenobiotics in achieving high reproductive potential of termites which in turn facilitate the process of biodegradation and enhance the nutrient enrichment in the soils of tropical deciduous forest.
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Affiliation(s)
- Ram Kumar Ganguly
- Department of Zoology, Vidyasagar university, Midnapore 721102, West Bengal, India.
| | - Md Abdullah Al-Helal
- Department of Zoology, Vidyasagar university, Midnapore 721102, West Bengal, India
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Hussain N, Patnaik P, Abbasi T, Khamrang C, Abbasi SA, Abbasi T. Role of different earthworm species in nullifying the toxicity of Ipomea carnea and enhancing its utility as a phytoremediator. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 24:1385-1394. [PMID: 35166609 DOI: 10.1080/15226514.2022.2031864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The dreaded weed ipomea (Ipomea carnea), has shown promise as a versatile phytoremediator. But I. carnea plants exude several alkaloids and phenols which are harmful to plants as well as animals. Due to this, the weed imparts as much or more toxicity to the soil as it remediates. These authors have earlier found that upon being vermicomposted by Eisenia fetida ipomea loses its toxicity and becomes a benign organic fertilizer with pest repellant attributes. These findings open up the possibility of using earthworms in those segments of land which are sought to be phytoremediated by ipomea so that the earthworms can keep converting the dead ipomea plants and the debris of live plants to fertilizer. The present work has aimed to determine whether the extent and nature of earthworm impact differs from species to species or is similar across different species. It has revealed that the action of each of the four different earthworm species deployed by the authors caused the C:N ratio of ipomea to change drastically ̶ from 28.20 to 15.95 ± 0.75, bringing the vermicomposts to the category of fertilizers fit for horticulture. The Fourier transform infrared (FTIR) spectra revealed that all the species caused a breakdown of the alkaloids and the phenolic compounds present in ipomea, resulting in the weed's detoxification. The earthworms also effected partial degradation of the lignocellulosic content of ipomea to simpler and more soil-friendly constituents like humic acids. Thermogravimetry, differential scanning calorimetry and scanning electron microscopy corroborated these findings. The influence exerted by the four species of earthworms was similarly beneficial in nature and extent.
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Affiliation(s)
- Naseer Hussain
- Centre for Pollution Control & Environmental Engineering, Pondicherry University, Chinakalapet, Puducherry, India
| | - Pratiksha Patnaik
- Centre for Pollution Control & Environmental Engineering, Pondicherry University, Chinakalapet, Puducherry, India
| | - Tabassum- Abbasi
- School of Engineering, University of Petroleum and Energy Studies, Dehradun, India
| | - Channgam Khamrang
- Centre for Pollution Control & Environmental Engineering, Pondicherry University, Chinakalapet, Puducherry, India
| | - Shahid A Abbasi
- Centre for Pollution Control & Environmental Engineering, Pondicherry University, Chinakalapet, Puducherry, India
| | - Tasneem Abbasi
- Centre for Pollution Control & Environmental Engineering, Pondicherry University, Chinakalapet, Puducherry, India
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Ferraz Ramos R, Almeida Santana N, de Andrade N, Scheffer Romagna I, Tirloni B, de Oliveira Silveira A, Domínguez J, Josemar Seminoti Jacques R. Vermicomposting of cow manure: Effect of time on earthworm biomass and chemical, physical, and biological properties of vermicompost. BIORESOURCE TECHNOLOGY 2022; 345:126572. [PMID: 34921917 DOI: 10.1016/j.biortech.2021.126572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
Vermicomposting is a biological process for efficient cattle manure treatment, but the vermicomposting time determines the quality of the vermicompost. The objective of this study was to evaluate the effect of cattle manure vermicomposting time on earthworm biomass and the changes in physical, chemical, and biological in properties of the vermicompost. The cattle manure was inoculated with Eisenia andrei earthworms and conducted vermicomposting for 0, 15, 30, 45, 60, and 120 days. The analysis of 44 chemical, physical, and biological properties allowed the vermicomposting process to be divided into initial (<45 days) and final (45-120 days) phases. The initial phase was characterized by high microbial activity and the final by high physical-chemical transformation of the vermicompost and an increase in earthworm density. The organic matter aromaticity increased until the 45th day, subsequently decreasing. Although 30 d of vermicompost are sufficient to obtain a high-quality organic fertilizer, 120 d are necessary for producing matrices.
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Affiliation(s)
- Rodrigo Ferraz Ramos
- Department of Soil, Federal University of Santa Maria, Roraima Ave., 1000, Camobi, Santa Maria, RS, Brazil
| | - Natielo Almeida Santana
- Department of Sanitary and Environmental Engineering, Federal University of Santa Maria, Roraima Ave., 1000, Camobi, Santa Maria, RS, Brazil
| | - Nariane de Andrade
- Department of Soil, Federal University of Santa Maria, Roraima Ave., 1000, Camobi, Santa Maria, RS, Brazil
| | - Izabelle Scheffer Romagna
- Department of Soil, Federal University of Santa Maria, Roraima Ave., 1000, Camobi, Santa Maria, RS, Brazil
| | - Bárbara Tirloni
- Department of Chemistry, Federal University of Santa Maria, Roraima Ave., 1000, Camobi, Santa Maria, RS, Brazil
| | - Andressa de Oliveira Silveira
- Department of Sanitary and Environmental Engineering, Federal University of Santa Maria, Roraima Ave., 1000, Camobi, Santa Maria, RS, Brazil
| | - Jorge Domínguez
- Grupo de Ecoloxía Animal (GEA), Universidade de Vigo, E-36310 Vigo, Pontevedra, Spain
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19
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Lin J, Zhao S, Yuan Q. A novel technology for separating live earthworm from vermicompost: Experiment, mechanism analysis, and simulation. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 131:50-60. [PMID: 34098498 DOI: 10.1016/j.wasman.2021.05.031] [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: 12/13/2020] [Revised: 05/02/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
The vermicomposting is widely acknowledged as an effective and sustainable biological technology to dispose large scale organic solid waste such as livestock manure, crop residues and municipal sludge. The scale of vermicomposting has constantly increased over recent years due to high market demand for live earthworms. Rapid and efficient extraction and harvesting earthworm from large-scale vermicompost has become a bottle-neck problem at the end of vermicomposting. Currently, most earthworm separation is done manually or relies on simple tools, and is therefore low efficient, time consuming and labor intensive. In this study, to explore earthworm separation technology and underlying mechanisms, three major studies were conducted based on the developed separator: Earthworm separation experiment, mechanism analysis of separation, and separation process simulation. The result indicated that under a 45% moisture content of vermicompost, earthworm can be separated centrifugally with approximately 83.79% worm separation rate. The treatment capacity of separator is 21.2 kg of total vermicompost mixture per minute. The critical factor in earthworm-vermicompost separation is frictional force and liquid membrane adhesion at the contact interface of conical separator. The final separated X velocity of earthworms is higher, whereas the Y and Z velocities are less than those of vermicompost. The earthworms are centrifugally thrown to a specific area called the earthworm harvest position. The outcome of this study provides a valuable reference for improvement of earthworm harvest efficiency and for shortening the recycling period of vermicomposting products in practice.
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Affiliation(s)
- Jiacong Lin
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Key Laboratory of Agricultural Equipment in Mid-lower Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Wuhan 430070, Hubei, China; Environment and Plant Protection Institution, Chinese Academy of Tropical Agricultural Science, Haikou 571101, Hainan, China
| | - Shuai Zhao
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - Qiaoxia Yuan
- College of Engineering, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Key Laboratory of Agricultural Equipment in Mid-lower Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Wuhan 430070, Hubei, China.
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20
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Majee S, Halder G, Mandal DD, Tiwari ON, Mandal T. Transforming wet blue leather and potato peel into an eco-friendly bio-organic NPK fertilizer for intensifying crop productivity and retrieving value-added recyclable chromium salts. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125046. [PMID: 33461013 DOI: 10.1016/j.jhazmat.2021.125046] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 01/01/2021] [Accepted: 01/03/2021] [Indexed: 06/12/2023]
Abstract
An attempt has been made to address two important issues, the solid waste management of leather industry and soil fertility. The SEM images revealed altered surface-morphology.The EDS elemental analysis exhibited presence of about 13.2% nitrogen (N), 50.56% carbon (C), 2.69% phosphorus (P) in the collagenous material of wet blue leather (WBL) after chromium removal. In potato peel biochar (PPB) prepared the EDS analysis corroborated the presence of N P K in 5%, 1.4% and 21.64% respectively. In the formulated bio-organic NPK fertilizer, using chromium free WBL and PPB, the percentage of N, P, K, was in 13.10, 2.41, 20.20% respectively which was authenticated by EDS. Its effect on okra (Abelmoschus esculentus) plant showed higher growth (1.11 fold fruit size) and total chlorophyll content (1.61 fold) than in untreated soil (control) but displayed similar result as in presence of chemical fertilizer. The released free ammonia in soil with bio-organic NPK was more (37.02%) than with chemical fertilizer (6.10%). DNA intercalation study showed the non-hazardous impact on soil. The FTIR, XRD, SEM-EDS, AAS further specified the conversion of the WBL extracted acidic chromium-rich solution by MgO into crystalline chromium for commercial use.
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Affiliation(s)
- Subhasish Majee
- Centre for Technological Excellence in Water Purification, Department of Chemical Engineering, National Institute of Technology Durgapur, India
| | - Gopinath Halder
- Centre for Technological Excellence in Water Purification, Department of Chemical Engineering, National Institute of Technology Durgapur, India
| | | | - O N Tiwari
- Centre for Conservation and Utilisation of Blue Green Algae, Division of Microbiology, ICAR- Indian Agricultural Research Institute, New Delhi, India.
| | - Tamal Mandal
- Centre for Technological Excellence in Water Purification, Department of Chemical Engineering, National Institute of Technology Durgapur, India.
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Zziwa A, Jjagwe J, Kizito S, Kabenge I, Komakech AJ, Kayondo H. Nutrient recovery from pineapple waste through controlled batch and continuous vermicomposting systems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 279:111784. [PMID: 33310239 DOI: 10.1016/j.jenvman.2020.111784] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 11/12/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
The largest portion of pineapple peels and pulp generated from production points is disposed of haphazardly contributing to a number of environmental and health challenges. However, these wastes contain valuable plant nutrients that could be recovered to boost soil fertility, and increase agricultural production. This study evaluated the variation in physico-chemical parameters in batch and continuous vermicomposting systems as potential pathways for nutrient recovery from pineapple waste. The study compared the efficiency of waste reduction and nutrient recovery for batch (B), and continuous (C) vermicomposting systems during a 60-day period. The substrates were pineapple peels (PW), and cattle manure (CM) fed in a ratio of 4:1 (w/w). Control reactors were fed with 100% CM in both the feeding modes. Results indicated that waste degradation was 60%, and 54% while earthworm biomass increased by 57% and 129% for BPW, and CPW, respectively. pH significantly decreased with time in both systems. Total phosphorous increased with vermicomposting time with that of B being significantly higher than C systems. Nitrogen, potassium, and sodium significantly increased in the control experiments while the three elements significantly reduced for BPW, and CPW owing to high leachate production in the latter. The N, P, K, and C retention in vermicompost was 24.2%, 90.4%, 67.5%, 41.1%, and 32.6%, 91.2%, 79.3%, 46.1%, for BPW and CPW, respectively. Continuous systems produced higher earthworm biomass and retained more nutrients in vermicompost than batch systems, and can therefore, be recommended as better systems for pineapple waste vermicomposting.
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Affiliation(s)
- Ahamada Zziwa
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda.
| | - Joseph Jjagwe
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda
| | - Simon Kizito
- Department of Forestry, Biodiversity and Tourism, P.O.BOX, 7062, Makerere University, Kampala, Uganda
| | - Isa Kabenge
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda
| | - Allan John Komakech
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda
| | - Henry Kayondo
- Department of Agricultural and Biosystems Engineering, College of Agricultural and Environmental Sciences, Makerere University, P.O. BOX, 7062, Kampala, Uganda
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Ravindran B, Karmegam N, Yuvaraj A, Thangaraj R, Chang SW, Zhang Z, Kumar Awasthi M. Cleaner production of agriculturally valuable benignant materials from industry generated bio-wastes: A review. BIORESOURCE TECHNOLOGY 2021; 320:124281. [PMID: 33099155 DOI: 10.1016/j.biortech.2020.124281] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 06/11/2023]
Abstract
Bio-wastes from different agro-based industries are increasing at a rapid rate with the growing human population's demand for the products. The industries procure raw materials largely from agriculture, finish it with the required major product, and produce huge bio-wastes which are mostly disposed unscientifically. This creates serious environmental problems and loss of resources and nutrients. Traditional bio-wastes disposal possess several demerits which again return with negative impact over the eco-system. Anaerobic digestion, composting, co-composting, and vermicomposting are now-a-days given importance due to the improved and modified methods with enhanced transformation of bio-wastes into suitable soil amendments. The advanced and modified methods like biochar assisted composting and vermicomposting is highlighted with the updated knowledge in the field. Hence, the present study has been carried to compile the effective and efficient methods of utilizing industry generated bio-wastes for circularity between agriculture - industrial sectors to promote sustainability.
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Affiliation(s)
- Balasubramani Ravindran
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Department of Environmental Energy and Engineering, Kyonggi University, Youngtong - Gu, Suwon 16227, South Korea
| | - Natchimuthu Karmegam
- Department of Botany, Government Arts College (Autonomous), Salem 636 007, Tamil Nadu, India
| | - Ananthanarayanan Yuvaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - Ramasundaram Thangaraj
- Vermitechnology and Ecotoxicology Laboratory, Department of Zoology, School of Life Sciences, Periyar University, Salem 636 011, Tamil Nadu, India
| | - S W Chang
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong - Gu, Suwon 16227, South Korea
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Taicheng Road 3#, Yangling, Shaanxi 712100, China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Taicheng Road 3#, Yangling, Shaanxi 712100, China.
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23
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A survey of entomopathogenic nematodes and their symbiotic bacteria in agricultural areas of northern Thailand. J Helminthol 2020; 94:e192. [PMID: 32924906 DOI: 10.1017/s0022149x20000735] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Entomopathogenic nematodes (EPNs) Steinernema and Heterorhabditis and their symbiotic bacteria, Xenorhabdus and Photorhabdus, have been successfully used for the control of insect pests. The objectives of this study were to survey the EPNs and symbiotic bacteria in the agricultural areas of the Phitsanulok province, Thailand, and to study the association between the soil parameters and presence of EPNs. We collected 200 soil samples from 40 soil sites in agricultural areas (field crops, horticulture crops and forest). The prevalence of EPNs was 8.0% (16/200). Fifteen of the EPN isolates were molecularly identified (based on 28S ribosomal DNA and internal transcribed spacer regions) as Steinernema siamkayai. Seven isolates of Xenorhabdus stockiae were identified using recombinase A sequencing. Phylogenetic analysis revealed that all the Steinernema and Xenorhabdus isolates were closely related to S. siamkayai (Indian strain) and X. stockiae (Thai strain), respectively. Significantly more EPNs were recovered from loam than from clay. Although the association between soil parameters (pH, temperature and moisture) and the presence of EPNs was not statistically significant, the elevation levels of the soil sites with and without EPNs were found to be different. Moreover, statistical comparisons between the agricultural areas revealed no significant differences. Therefore, we concluded that S. siamkayai is associated with X. stockiae in agricultural areas and that there is no association between the soil parameters of agricultural areas and presence of EPNs, except for soil texture and the elevation. Steinernema siamkayai may be applied as a biocontrol agent in agricultural areas.
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Smith BAM, Eudoxie G, Stein R, Ramnarine R, Raghavan V. Effect of neem leaf inclusion rates on compost physico-chemical, thermal and spectroscopic stability. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 114:136-147. [PMID: 32659686 DOI: 10.1016/j.wasman.2020.06.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
Neem leaves possess antimicrobial, insecticidal and nitrification inhibitory biochemicals that may influence compost stability. However, if neem-based compost achieves stability, it can prove useful by providing fertilizer-cum-pesticide properties. Therefore, conventional (physico-chemical), thermogravimetric (TGA) and spectroscopic analyses (FTIR and 13C SS NMR) were used to evaluate the effects of neem leaf content on stability. Treatments included 0, 10, 20, 30, 40 and 50% neem leaves by volume combined with complimentary amounts of corn stover to form 50% of the substrate formulation (SF). Cow manure constituted the additional 50%. Despite all treatments reaching ambient temperature (32 °C ± 1 °C) by the 40th day, Solvita® results showed high CO2 respiration, thereby classifying the compost treatments as active, whereas decreased C:N ratio, NH4+: NO3- ratio and NH4+ values among treatments indicated stability. Furthermore, TGA, FTIR and 13C NMR revealed degradation of labile organic matter and showed that complex aromatic and lignin compounds were also degraded, particularly when neem leaves were added to the mixture, suggesting that aromatisation does not always indicate stability in compost. Spearman's rank correlation showed that physico-chemical methods were poorly correlated to respirometric, thermal and spectroscopic methods. It also suggests that these respirometric and advanced methods are important in understanding the mechanisms affecting neem compost stability.
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Affiliation(s)
- Bryan A M Smith
- Department of Food Production, Faculty of Food & Agriculture, The University of the West Indies, St. Augustine Campus, Trinidad and Tobago.
| | - Gaius Eudoxie
- Department of Food Production, Faculty of Food & Agriculture, The University of the West Indies, St. Augustine Campus, Trinidad and Tobago
| | - Robin Stein
- Department of Chemistry, Faculty of Science, McGill University, Canada
| | - Ravindra Ramnarine
- Department of Food Production, Faculty of Food & Agriculture, The University of the West Indies, St. Augustine Campus, Trinidad and Tobago
| | - Vijaya Raghavan
- Department of Bioresource Engineering, Faculty of Agricultural & Environmental Sciences, McGill University, Canada
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25
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Srivastava V, Goel G, Thakur VK, Singh RP, Ferreira de Araujo AS, Singh P. Analysis and advanced characterization of municipal solid waste vermicompost maturity for a green environment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 255:109914. [PMID: 32063304 DOI: 10.1016/j.jenvman.2019.109914] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 11/04/2019] [Accepted: 11/22/2019] [Indexed: 05/09/2023]
Abstract
Rapid demographic expansion along with increasing urbanization has aggravated the problem of solid waste management. Therefore, scientists are seeking waste management methods that are eco-friendly, cost effective and produce immediate results. In the developing world, municipal solid waste (MSW) contains mostly organic substances, therefore vermicomposting could be a better and cost-effective option for waste management. In this study, vermicomposting of organic portion of MSW with cow dung (additive) was performed using Eisenia fetida. The results showed significant (p < 0.001) decline in pH (13.17%), TOC (21.70%), C: N (62.53%) and C: P (57.66%) ratios, whilst total N (108.9%), P (84.89%) and K (21.85%) content increased (p < 0.001) in matured vermicompost. Different enzymatic activities declined during termination phase of vermicomposting experiment with maximum decrease of 41.72 (p = 0.002) and 39.56% (p = 0.001) in protease and β-glucosidase, respectively. FT-IR, TGA, DSC and SEM studies suggested that final vermicompost was more stabilized as compared to initial waste mixture, characterized by reduced levels of aliphatic materials, carbohydrates and increase in aromatic groups possibly due to biosynthesis of humic substances. Both, the conventional (physicochemical and enzyme activity) and advanced techniques depict maturity and stability of the ready vermicompost. However, FT-IR, TGA, DSC and SEM were proved to be more promising, fast and reliable techniques over conventional analyses.
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Affiliation(s)
- Vaibhav Srivastava
- Department of Environment and Sustainable Development, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
| | - Gaurav Goel
- School of Aerospace, Transport & Manufacturing, Cranfield University, United Kingdom
| | - Vijay Kumar Thakur
- School of Aerospace, Transport & Manufacturing, Cranfield University, United Kingdom
| | - Rajeev Pratap Singh
- Department of Environment and Sustainable Development, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India.
| | | | - Pooja Singh
- Department of Science, Institute of Computer Science and Technology, SHEPA, Varanasi, India
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26
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Arora M, Kaur A. Azolla pinnata, Aspergillus terreus, and Eisenia fetida for fasterrecycling of nutrients from wheat straw. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:32624-32635. [PMID: 31630353 DOI: 10.1007/s11356-019-06472-5] [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: 02/15/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
A vast amount of surplus wheat straw/stubble (a carbon-rich bioresource) is wasted every year by burning. Harmful gases and residue matter released due to burning cause harmful effects on the environment and human health. Therefore, there is a strong need to recycle this bioresource in a sustainable manner. In the present study, wheat straw (W) was spiked with cattle dung (C), Azolla pinnata (A), and Aspergillus terreus (F) to make eight different treatments (1 kg each), viz. W (1 kg), WC (666 g + 334 g), WA (980 g + 20 g), WF (980 g + 20 ml), WCF (666 g + 314 g + 20 ml), WCA (666 g + 314 g + 20 g), WFA (960 g+ 20 ml + 20 g), and WCFA(666 g + 294 g + 20 ml + 20 g), and subjected to vermicomposting (Vcom) and aerobic composting (Acom). A comparison was made for the time required for degradation and nutrient profile of the products. The fastest recycling of wheat straw/stubble (120 days) was observed in WCA and WCFA, but the nutrient quality of WCA was better (N 18.67, P 3.88, K 38.84 g/kg). In the Acom group, longer time was required for degradation of various mixtures, but in this group also, WCA was degraded first of all (138 days) and yielded a product with the best nutrient quality (N 14.77, P 2.56, K 28.80 g/kg). Maximum growth of E. fetida and maximum number of hatchlings were observed in WCA while the highest cocoon production was observed in WCFA. It was observed that azolla enhanced conversion of wheat straw into a nutrient-rich product for agronomic use. Thus its use will reduce the amount of cattle dung in the mixture and the bulk to be handled by the farmers for ecosafe disposal of surplus straw/stubble. Therefore, this technology can be adopted as an alternative to burning.
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Affiliation(s)
- Manveen Arora
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
| | - Arvinder Kaur
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
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27
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Wafi T, Ben Othman A, Besbes M. Qualitative and quantitative characterization of municipal solid waste and the unexploited potential of green energy in Tunisia. BIORESOUR BIOPROCESS 2019. [DOI: 10.1186/s40643-019-0274-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Abstract
Municipal solid waste management (MSWM) is one of the major environmental issues in Tunisian cities. Rapid growth in urbanization and population rates and the changes in people’s lifestyle have prompted a dramatic increase quantity and a significant shift in the composition of municipal solid waste. There is insufficient data concerning the quantities and the composition of waste streams along with the absence of a comprehensive complete overview and a wider perspective of MSWM potential that provides detailed information at region and city level. As a result, it is still impossible for the scientific community and the authorities to provide synergetic schemes to tie the problems of MSWM with how to integrate economically feasible and environmentally sustainable practices holistically. In the present study, an attempt has been made to provide a comprehensive overview of MSW, through a qualitative (compositional) and quantitative (parametric) characterization of the generated total waste generated in Tunisian cities. A 1-year research survey was conducted in seven regions in Tunisia (Great Tunis, Northeast, Northwest, Midwest, Mideast, Southwest, and Southeast) that cover the 24 provinces of the country. Collected samples revealed that the distribution of waste by region was defined by the region’s demographic, economic, and industrial status. Approaches of possibly more efficient procedures that can be undertaken to improve MSW collection are discussed. At a final stage and based on the potential of biogas calculated in the seven regions, we suggest that the scientific community and the authorities should introduce applicable schemes to valorize MSW through generating biogas as a renewable energy.
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28
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Cui G, Li F, Li S, Bhat SA, Ishiguro Y, Wei Y, Yamada T, Fu X, Huang K. Changes of quinolone resistance genes and their relations with microbial profiles during vermicomposting of municipal excess sludge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 644:494-502. [PMID: 29990900 DOI: 10.1016/j.scitotenv.2018.07.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 06/29/2018] [Accepted: 07/01/2018] [Indexed: 06/08/2023]
Abstract
Antibiotic resistance genes abundant in municipal excess sludge reduce the agricultural value of vermicompost. However, little attention has been paid on the fate and behavior of the problem-causing agents in vermicomposting. In this study, the fate and behavior of quinolone resistance genes in excess activated sludge during vermicomposting were studied with reactors introduced with Eisenia fetida for three different densities. The substrate pile without earthworms was operated as control in parallel. The results showed that earthworms could significantly reduce the absolute abundance of quinolone resistance genes in the excess sludge, with a reduction ratio of 85.6-100% for qnr A and 92.3-95.3% for qnr S, respectively (p < 0.05). For microbial profiles, both the dehydrogenase activity and the abundance of microbes (16S rDNA) revealed a distinct decreasing trend after 7 days from the start of the experiment; however, the bacterial diversity in the final products seemed to be enriched with the emergence of the uncultured Flavobacteriales bacterium and uncultured Anaerolineaceae bacterium. Redundancy analysis revealed clearly that the qnr genes had positive correlations with the targeted indexes of microbial profiles, with the correlations with the bacterial abundance and dehydrogenase activity being more statistically significant than the bacterial diversity (p < 0.05). The results of this study suggested that earthworms could promote the attenuation of quinolone resistance genes in the excess sludge through lowering the bacterial abundance and activity, and the promotion effect could be enhanced by increasing the density of earthworms.
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Affiliation(s)
- Guangyu Cui
- Graduate School of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Fusheng Li
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
| | - Shuailei Li
- Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Sartaj Ahmad Bhat
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yasushi Ishiguro
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yongfen Wei
- River Basin Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Toshiro Yamada
- Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Xiaoyong Fu
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Kui Huang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
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29
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Khatua C, Sengupta S, Krishna Balla V, Kundu B, Chakraborti A, Tripathi S. Dynamics of organic matter decomposition during vermicomposting of banana stem waste using Eisenia fetida. WASTE MANAGEMENT (NEW YORK, N.Y.) 2018; 79:287-295. [PMID: 30343756 DOI: 10.1016/j.wasman.2018.07.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 06/08/2023]
Abstract
A better understanding of how dynamics of physical and chemical changes occur during vermicomposting process would be helpful for determining the stability and maturity of vermicompost. For improving the knowledge about this issue several instrumental techniques were used in the present study to analyse the physical and chemical changes as a function of vermicomposting time of banana stem waste (BS) spiked with cow dung (CD) in different proportions using earthworm Eisenia fetida. Chemical analysis by ICP-AES showed gradual increase in the plant nutrients (P, Ca, K, Mg, Fe) up to 60 day of vermicomposting in all the treatments. But among different treatments, K, Mg and Fe were considerably higher in the BS2CD1 blend. The FTIR showed strong NO stretching vibration with increasing BS content signifying the presence of nitrate in the final compost. The TG analysis of final BS-CD composts described the lower mass loss (52-55%) in the final compared to the initial stage due to high level of humification by earthworms. The maturity of the final compost was confirmed by DSC analysis which exhibited lowering of relative intensity of exothermic peaks related to the easily degradable material at 320-330 °C and complex organic moieties at 495-530 °C. Decrease in the humification index (Q4/6, Q2/4, Q2/6) at 60 day confirmed the stability of vermicomposts. All the treatments showed <2 mg CO2-C g-1 vermicompost C day-1 respiration rates and >70% germination indices (GI) for rice and pea seeds. These findings defined a clear comparison between the treatments during vermicomposting in terms of stability and maturity and revealed that BS2CD1 can be utilized as nutrient-rich stable compost for enhanced crop production.
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Affiliation(s)
- Chandra Khatua
- Bioceramics & Coating Division, CSIR - Central Glass & Ceramic Research Institute, 196 Raja S. C. Mullick Road, Kolkata 700032, India; Academy of Scientific and Innovative Research (ACSIR), CSIR - Central Glass & Ceramic Research Institute Campus, 196 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Somoshree Sengupta
- Bioceramics & Coating Division, CSIR - Central Glass & Ceramic Research Institute, 196 Raja S. C. Mullick Road, Kolkata 700032, India; Academy of Scientific and Innovative Research (ACSIR), CSIR - Central Glass & Ceramic Research Institute Campus, 196 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Vamsi Krishna Balla
- Bioceramics & Coating Division, CSIR - Central Glass & Ceramic Research Institute, 196 Raja S. C. Mullick Road, Kolkata 700032, India; Academy of Scientific and Innovative Research (ACSIR), CSIR - Central Glass & Ceramic Research Institute Campus, 196 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Biswanath Kundu
- Bioceramics & Coating Division, CSIR - Central Glass & Ceramic Research Institute, 196 Raja S. C. Mullick Road, Kolkata 700032, India; Academy of Scientific and Innovative Research (ACSIR), CSIR - Central Glass & Ceramic Research Institute Campus, 196 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Ashis Chakraborti
- Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohonpur, Nadia 741246, India
| | - Sudipta Tripathi
- Institute of Agricultural Science, University of Calcutta, 51/2, Hazra Road, Kolkata 700019, India.
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30
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Jeong KH, Kim JK, Ravindran B, Lee DJ, Wong JWC, Selvam A, Karthikeyan OP, Kwag JH. Evaluation of pilot-scale in-vessel composting for Hanwoo manure management. BIORESOURCE TECHNOLOGY 2017; 245:201-206. [PMID: 28892692 DOI: 10.1016/j.biortech.2017.08.127] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/18/2017] [Accepted: 08/20/2017] [Indexed: 06/07/2023]
Abstract
The study investigated the effect of in-vessel composting process on Hanwoo manure in two different South Korea regions (Pyeongchang and Goechang) with sawdust using vertical cylindrical in-vessel bioreactor for 42days. The stability and quality of Hanwoo manure in both regions were improved and confirmed through the positive changes in physico-chemical and phytotoxic properties using different commercial seed crops. The pH and electrical conductivity (EC, ds/m) of composted manure in both regions were slightly increased. At the same time, carbon:nitrogen (C:N) ratio and ammonium nitrogen:nitrate nitrogen (NH4+-N:NO3--N) ratio decreased to 13.4-16.1 and 0.36-0.37, respectively. The germination index (GI, %) index was recorded in the range of 67.6-120.9%, which was greater than 50%, indicating phytotoxin-free compost. Although, composted manure values in Goechang region were better in significant parameters, overall results confirmed that the composting process could lead to complete maturation of the composted product in both regions.
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Affiliation(s)
- Kwang-Hwa Jeong
- Animal Environment Division, Department of Animal Biotechnology and Environment, National Institute of Animal Science (NIAS), RDA, Wanju-Gun, Jeonju, South Korea
| | - Jung Kon Kim
- Animal Environment Division, Department of Animal Biotechnology and Environment, National Institute of Animal Science (NIAS), RDA, Wanju-Gun, Jeonju, South Korea
| | - Balasubramani Ravindran
- Animal Environment Division, Department of Animal Biotechnology and Environment, National Institute of Animal Science (NIAS), RDA, Wanju-Gun, Jeonju, South Korea.
| | - Dong Jun Lee
- Animal Environment Division, Department of Animal Biotechnology and Environment, National Institute of Animal Science (NIAS), RDA, Wanju-Gun, Jeonju, South Korea
| | - Jonathan Woon-Chung Wong
- Sino-Forest Applied Research Centre for Pearl River Delta Environment, and Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region
| | - Ammaiyappan Selvam
- Department of Plant Science, Manonmaniam Sundaranar University, Tamil Nadu, India
| | - Obuli P Karthikeyan
- Sino-Forest Applied Research Centre for Pearl River Delta Environment, and Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region
| | - Jung-Hoon Kwag
- Animal Environment Division, Department of Animal Biotechnology and Environment, National Institute of Animal Science (NIAS), RDA, Wanju-Gun, Jeonju, South Korea
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31
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Bhat SA, Singh J, Vig AP. Amelioration and degradation of pressmud and bagasse wastes using vermitechnology. BIORESOURCE TECHNOLOGY 2017; 243:1097-1104. [PMID: 28764116 DOI: 10.1016/j.biortech.2017.07.093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 07/15/2017] [Accepted: 07/17/2017] [Indexed: 06/07/2023]
Abstract
This study evaluated the amelioration of pressmud (PM) and bagasse (BG) wastes by the vermiremediation process. The wastes were spiked with cattle dung (CD) in different concentrations to find out the best proportion supporting maximum earthworm growth and nutrients availability. The highest growth rate was observed in PMBG50 (282.2mg/d/worm) feed mixture. Response surface design of earthworm growth parameters enumerated best concentration of wastes in CD with maximum value of 21.81% for earthworm number, 30.86% for earthworm weight, 27.09% for cocoons, 29.71% for hatchlings and 34.0% for hatchlings weight. Vermicomposting enhanced nutrient parameters like pH (6-8%), total kjeldahl nitrogen (19-48%), total phosphorus (9-67%), total calcium (13-111%), while decrease in total organic carbon (14-32%), electrical conductivity (21-30%), C:N ratio (36-51%), total potassium (9-19%) and total sodium (3-21%). Heavy metals in the final products were found to be under safe limits. SEM micrographs were more fragmented which indicated maturity and stability.
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Affiliation(s)
- Sartaj Ahmad Bhat
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, India
| | | | - Adarsh Pal Vig
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, India.
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