Biodegradation最新文献

{"title":"Biooxidation of hydrogen sulfide to sulfur by moderate thermophilic acidophilic bacteria","authors":"R. Romero,&nbsp;P. Viedma,&nbsp;D. Cotoras","doi":"10.1007/s10532-023-10049-y","DOIUrl":"10.1007/s10532-023-10049-y","url":null,"abstract":"<div><p>The copper industry utilizes significant amounts of sulfuric acid in its processes, generating sulfate as waste. While sulfate-reducing bacteria can remove sulfate, it produces hydrogen sulfide (H₂S) as a byproduct. This study examined the capability of a consortium consisting of <i>Sulfobacillus thermosulfidooxidans</i> and <i>Sulfobacillus acidophilus</i> to partially oxidize H₂S to S° at a temperature of 45 °C. A fixed-bed bioreactor, with glass rings as support material and sodium thiosulfate as a model electron donor, was inoculated with the consortium. Formation of biofilms was crucial to maintain the bioreactor’s steady state, despite high flow rates. Afterward, the electron donor was changed to H₂S. When the bioreactor was operated continuously and with high aeration, H₂S was fully oxidized to SO₄²⁻. However, under conditions of low aeration and at a concentration of 0.26 g/L of H₂S, the consortium was able to oxidize H₂S to S° with a 13% yield. S° was discovered attached to the glass rings and jarosite. The results indicate that the consortium could oxidize H₂S to S° with a 13% yield under low aeration and at a concentration of 0.26 g/L of H₂S. The findings highlight the capability of a <i>Sulfobacillus</i> consortium to convert H₂S into S°, providing a potential solution for addressing environmental and safety issues associated with sulfate waste generated by the mining industry.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 2","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10440242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioaugmentation has temporary effect on anaerobic pesticide biodegradation in simulated groundwater systems","authors":"Andrea Aldas-Vargas,&nbsp;Jannigje G. Kers,&nbsp;Hauke Smidt,&nbsp;Huub H. M. Rijnaarts,&nbsp;Nora B. Sutton","doi":"10.1007/s10532-023-10039-0","DOIUrl":"10.1007/s10532-023-10039-0","url":null,"abstract":"<div><p>Groundwater is the most important source for drinking water in The Netherlands. Groundwater quality is threatened by the presence of pesticides, and biodegradation is a natural process that can contribute to pesticide removal. Groundwater conditions are oligotrophic and thus biodegradation can be limited by the presence and development of microbial communities capable of biodegrading pesticides. For that reason, bioremediation technologies such as bioaugmentation (BA) can help to enhance pesticide biodegradation. We studied the effect of BA using enriched mixed inocula in two column bioreactors that simulate groundwater systems at naturally occurring redox conditions (iron and sulfate-reducing conditions). Columns were operated for around 800 days, and two BA inoculations (BA1 and BA2) were conducted in each column. Inocula were enriched from different wastewater treatment plants (WWTPs) under different redox-conditions. We observed a temporary effect of BA1, reaching 100% removal efficiency of the pesticide 2,4-D after 100 days in both columns. In the iron-reducing column, 2,4-D removal was in general higher than under sulfate-reducing conditions demonstrating the influence of redox conditions on overall biodegradation. We observed a temporary shift in microbial communities after BA1 that is relatable to the increase in 2,4-D removal efficiency. After BA2 under sulfate-reducing conditions, 2,4-D removal efficiency decreased, but no change in the column microbial communities was observed. The present study demonstrates that BA with a mixed inoculum can be a valuable technique for improving biodegradation in anoxic groundwater systems at different redox-conditions.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 3","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10951022/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9775119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Autochthonous psychrophilic hydrocarbonoclastic bacteria and its ecological function in contaminated cold environments","authors":"Pranjal Bharali,&nbsp;Bhagyudoy Gogoi,&nbsp;Viphrezolie Sorhie,&nbsp;Shiva Aley Acharjee,&nbsp;Bendangtula Walling,&nbsp; Alemtoshi,&nbsp;Vinita Vishwakarma,&nbsp;Maulin Pramod Shah","doi":"10.1007/s10532-023-10042-5","DOIUrl":"10.1007/s10532-023-10042-5","url":null,"abstract":"<div><p>Petroleum hydrocarbon (PH) pollution has mostly been caused by oil exploration, extraction, and transportation activities in colder regions, particularly in the Arctic and Antarctic regions, where it serves as a primary source of energy. Due to the resilience feature of nature, such polluted environments become the realized ecological niches for a wide community of psychrophilic hydrocarbonoclastic bacteria (PHcB). In contrast, to other psychrophilic species, PHcB is extremely cold-adapted and has unique characteristics that allow them to thrive in greater parts of the cold environment burdened with PHs. The stated group of bacteria in its ecological niche aids in the breakdown of litter, turnover of nutrients, cycling of carbon and nutrients, and bioremediation. Although such bacteria are the pioneers of harsh colder environments, their growth and distribution remain under the influence of various biotic and abiotic factors of the environment. The review discusses the prevalence of PHcB community in colder habitats, the metabolic processes involved in the biodegradation of PH, and the influence of biotic and abiotic stress factors. The existing understanding of the PH metabolism by PHcB offers confirmation of excellent enzymatic proficiency with high cold stability. The discovery of more flexible PH degrading strategies used by PHcB in colder environments could have a significant beneficial outcome on existing bioremediation technologies. Still, PHcB is least explored for other industrial and biotechnological applications as compared to non-PHcB psychrophiles. The present review highlights the pros and cons of the existing bioremediation technologies as well as the potential of different bioaugmentation processes for the effective removal of PH from the contaminated cold environment. Such research will not only serve to investigate the effects of pollution on the basic functional relationships that form the cold ecosystem but also to assess the efficacy of various remediation solutions for diverse settings and climatic conditions.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 1","pages":"1 - 46"},"PeriodicalIF":3.1,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9826984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anammox with alternative electron acceptors: perspectives for nitrogen removal from wastewaters","authors":"Sergio J. Ponce-Jahen,&nbsp;Bibiana Cercado,&nbsp;Edson Baltazar Estrada-Arriaga,&nbsp;J. Rene Rangel-Mendez,&nbsp;Francisco J. Cervantes","doi":"10.1007/s10532-023-10044-3","DOIUrl":"10.1007/s10532-023-10044-3","url":null,"abstract":"<div><p>In the context of the anaerobic ammonium oxidation process (anammox), great scientific advances have been made over the past two decades, making anammox a consolidated technology widely used worldwide for nitrogen removal from wastewaters. This review provides a detailed and comprehensive description of the anammox process, the microorganisms involved and their metabolism. In addition, recent research on the application of the anammox process with alternative electron acceptors is described, highlighting the biochemical reactions involved, its advantages and potential applications for specific wastewaters. An updated description is also given of studies reporting the ability of microorganisms to couple the anammox process to extracellular electron transfer to insoluble electron acceptors; particularly iron, carbon-based materials and electrodes in bioelectrochemical systems (BES). The latter, also referred to as anodic anammox, is a promising strategy to combine the ammonium removal from wastewater with bioelectricity production, which is discussed here in terms of its efficiency, economic feasibility, and energetic aspects. Therefore, the information provided in this review is relevant for future applications.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 1","pages":"47 - 70"},"PeriodicalIF":3.1,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10774155/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10129524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biological control of some wood-decay fungi with antagonistic fungi","authors":"Selim Hınçal,&nbsp;Mesut Yalçın","doi":"10.1007/s10532-023-10045-2","DOIUrl":"10.1007/s10532-023-10045-2","url":null,"abstract":"<div><p>One of the most important biological factors that damage wood materials are wood-decay fungi (WDF). Chemical preservatives have traditionally been the most effective method for controlling WDF. However, due to environmental pressures, scientists are working on alternative protection methods. The aim of this study was to investigate the potential of some antagonistic fungi against wood-decay fungi as a biological control agent (BCA). For this purpose, the antagonistic effects of <i>Trichoderma harzianum, Trichoderma viride, Aspergillus niger</i>, and <i>Penicillium brevicompactum</i> fungi were investigated against the <i>Trametes versicolor, Trametes hirsuta, Stereum hirsutum, Coniophora puteana, Neolentinus lepideus</i>, and <i>Postia placenta</i> species of wood-decay Basidiomycetes fungi. In the study, firstly, inhibition rates were determined by comparing dual culture tests on agar medium, and then the performance of BCAs was compared by performing decay tests on wood blocks. As a result of the study, it was determined that the species belonging to the genus <i>Trichoderma</i> showed a very effective performance on WDF, increased the inhibition rate to 76–99%, and reduced the weight loss to 1.9–5.8%. Considering the inhibition rates, it was determined that the most effective rate of the BCAs was on <i>P. placenta</i> and the least on <i>S. hirsutum</i> species. According to the results obtained, it has been determined that some BCAs were very effective biological control agents of rot fungi on agar and wood blocks in vitro. However, in order to more clearly determine the effectiveness of BCAs in practice, this study, which was carried out in the laboratory environment, should be supported by tests performed in contact with the external field and soil.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"34 6","pages":"597 - 607"},"PeriodicalIF":3.6,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41079858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oxidation of chlortetracycline and its isomers by Botrytis aclada laccase in the absence of mediators: pH dependence and identification of transformation products by LC–MS","authors":"Nadia Gavilán de Fátima,&nbsp;Andrés Barriga,&nbsp;Juan Carlos Cáceres,&nbsp;Ernani Pinto,&nbsp;Ricardo Cabrera","doi":"10.1007/s10532-023-10046-1","DOIUrl":"10.1007/s10532-023-10046-1","url":null,"abstract":"<div><p>Tetracyclines are antibiotics considered emerging pollutants and currently, wastewater treatment plants are not able to remove them efficiently. Laccases are promising enzymes for bioremediation because they can oxidize a wide variety of substrates. The aim of this study was to evaluate the <i>Botrytis aclada</i> laccase for the oxidation of chlortetracycline and its isomers in the absence of a mediator molecule, at a pH range between 3.0 to 7.0, and to characterize the transformation products by LC–MS. Chlortetracycline and three isomers were detected in both, controls and reaction mixtures at 0 h and in controls after 48 h of incubation but in different proportions depending on pH. An additional isomer was also detected, but only in the presence of BaLac. Based on the transformation products identified in the enzymatic reactions and information from literature, we assembled a network of transformation pathways starting from chlortetracycline and its isomers. The spectrometric analysis of the products indicated the probable occurrence of oxygen insertion, dehydrogenation, demethylation and deamination reactions. Four new products were identified, and we also described a novel transformation product without the chloro group. We observed that increasing pH led to higher diversity of main products. This is the first study using the laccase from fungi <i>Botrytis aclada</i> to oxidate chlortetracycline and its isomers and it can be considered as an ecological alternative to be used in bioremediation processes such as wastewater.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 2","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9767096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of microbial biomass content on biodegradation and mechanical properties of poly(3-hydroxybutyrate) composites","authors":"Felix Eckel,&nbsp;Korbinian Sinzinger,&nbsp;Daniel Van Opdenbosch,&nbsp;Doris Schieder,&nbsp;Volker Sieber,&nbsp;Cordt Zollfrank","doi":"10.1007/s10532-023-10038-1","DOIUrl":"10.1007/s10532-023-10038-1","url":null,"abstract":"<div><p>Biodegradation rates and mechanical properties of poly(3-hydroxybutyrate) (PHB) composites with green algae and cyanobacteria were investigated for the first time. To the authors knowledge, the addition of microbial biomass led to the biggest observed effect on biodegradation so far. The composites with microbial biomass showed an acceleration of the biodegradation rate and a higher cumulative biodegradation within 132 days compared to PHB or the biomass alone. In order to determine the causes for the faster biodegradation, the molecular weight, the crystallinity, the water uptake, the microbial biomass composition and scanning electron microscope images were assessed. The molecular weight of the PHB in the composites was lower than that of pure PHB while the crystallinity and microbial biomass composition were the same for all samples. A direct correlation of water uptake and crystallinity with biodegradation rate could not be observed. While the degradation of molecular weight of PHB during sample preparation contributed to the improvement of biodegradation, the main reason was attributed to biostimulation by the added biomass. The resulting enhancement of the biodegradation rate appears to be unique in the field of polymer biodegradation. The tensile strength was lowered, elongation at break remained constant and Young’s modulus was increased compared to pure PHB.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 2","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10881657/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9803185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acidovorax PSJ13, a novel, efficient polyacrylamide-degrading bacterium by cleaving the main carbon chain skeleton without the production of acrylamide","authors":"Zhengjiang Wang,&nbsp;Kaili Li,&nbsp;Xuwei Gui,&nbsp;Zhenlun Li","doi":"10.1007/s10532-023-10036-3","DOIUrl":"10.1007/s10532-023-10036-3","url":null,"abstract":"<div><p>Given the environmental challenge caused by the wide use of polyacrylamide (PAM), an environmental-friendly treatment method is required. This study demonstrates the role of <i>Acidovorax</i> sp. strain PSJ13 isolated from dewatered sludge in efficiently degrading PAM. To be specific, the strain PSJ13 can degrade 51.67% of PAM in 96 h (2.39 mg/(L h)) at 35 °C, pH 7.5 and 5% inoculation amount. Besides, scanning electron microscope, X-ray photoelectron spectroscopy, liquid chromatography–mass spectrometry and high-performance liquid chromatography were employed to analyze samples, and the nitrogen present in the degradation products was investigated. The results showed that the degradation of PAM by PSJ13 started from the side chain and then mainly the –C–C– main chain, which produced no acrylamide monomers. As the first study to report the role of <i>Acidovorax</i> in efficiently degrading PAM, this work may provide a solution for industries that require PAM management.</p><h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"34 6","pages":"581 - 595"},"PeriodicalIF":3.6,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41079933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Complete degradation of di-n-butyl phthalate by Glutamicibacter sp. strain 0426 with a novel pathway","authors":"Chongyang Ren,&nbsp;Yiying Wang,&nbsp;Yanan Wu,&nbsp;He-Ping Zhao,&nbsp;Li Li","doi":"10.1007/s10532-023-10032-7","DOIUrl":"10.1007/s10532-023-10032-7","url":null,"abstract":"<div><p>Di-<i>n</i>-butyl phthalate (DBP) is widely used as plasticizer that has potential carcinogenic, teratogenic, and endocrine effects. In the present study, an efficient DBP-degrading bacterial strain 0426 was isolated and identified as a <i>Glutamicibacter</i> sp. strain 0426. It can utilize DBP as the sole source of carbon and energy and completely degraded 300 mg/L of DBP within 12 h. The optimal conditions (pH 6.9 and 31.7 °C) for DBP degradation were determined by response surface methodology and DBP degradation well fitted with the first-order kinetics. Bioaugmentation of contaminated soil with strain 0426 enhanced DBP (1 mg/g soil) degradation, indicating the application potential of strain 0426 for environment DBP removal. Strain 0426 harbors a distinctive DBP hydrolysis mechanism with two parallel benzoate metabolic pathways, which may account for the remarkable performance of DBP degradation. Sequences alignment has shown that an alpha/beta fold hydrolase (WP_083586847.1) contained a conserved catalytic triad and pentapeptide motif (GX1SX2G), of which function is similar to phthalic acid ester (PAEs) hydrolases and lipases that can efficiently catalyze hydrolysis of water-insoluble substrates. Furthermore, phthalic acid was converted to benzoate by decarboxylation, which entered into two different pathways: one is the protocatechuic acid pathway under the role of <i>pca</i> cluster, and the other is the catechol pathway. This study demonstrates a novel DBP degradation pathway, which broadens our understanding of the mechanisms of PAE biodegradation.</p></div>","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"35 1","pages":"87 - 99"},"PeriodicalIF":3.1,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9740484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cometabolic degradation of pyrene with phenanthrene as substrate: assisted by halophilic Pseudomonas stutzeri DJP1","authors":"Junfeng Jiang,&nbsp;Weijun Tian,&nbsp;Zhiyang Lu,&nbsp;Meile Chu,&nbsp;Huimin Cao,&nbsp;Dantong Zhang","doi":"10.1007/s10532-023-10035-4","DOIUrl":"10.1007/s10532-023-10035-4","url":null,"abstract":"","PeriodicalId":486,"journal":{"name":"Biodegradation","volume":"34 6","pages":"519 - 532"},"PeriodicalIF":3.6,"publicationDate":"2023-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41080079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}