Bioremediation Science and Technology Research最新文献

Mercury Sorption onto Rice Husk Ash: An Isothermal Remodelling 稻壳灰分对汞的吸附:等温模拟

Bioremediation Science and Technology Research Pub Date : 2023-07-31 DOI: 10.54987/bstr.v11i1.833

Bilal Ibrahim Dan-Iya, Faggo Abdullahi Ada, Muhammed Abdullahi Ubana, Ismaila Haruna, Aisha Grema, Mohd Yunus Shukor

{"title":"Mercury Sorption onto Rice Husk Ash: An Isothermal Remodelling","authors":"Bilal Ibrahim Dan-Iya, Faggo Abdullahi Ada, Muhammed Abdullahi Ubana, Ismaila Haruna, Aisha Grema, Mohd Yunus Shukor","doi":"10.54987/bstr.v11i1.833","DOIUrl":"https://doi.org/10.54987/bstr.v11i1.833","url":null,"abstract":"The rice milling process produces rice husk as a by-product. It is one of the most important agricultural leftovers in terms of volume. The data of the sorption isotherm of Hg (II) (CV) sorption onto rice husk ash, which was plotted using linearized plots of isothermal models were reanalyzed using isothermal models using nonlinear regression. As the datapoints were small, nineteen isotherm models with parameters of only up to three were utilized to prevent overfitting. The models were Henry, Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Jovanovic, Redlich-Peterson, Sips, Toth, Hill, Khan, BET, Vieth-Sladek, Radke-Prausnitz, Brouers–Sotolongo, Fritz-Schlunder III, Unilan, Fowler-Guggenheim and Moreau. Statistical analysis based on error function analyses such as root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), accuracy factor (AF), bias factor (BF), Bayesian Information Criterion (BIC), corrected AICc (Akaike Information Criterion), and Hannan-Quinn Criterion (HQC) showed that Freundlich model was the best model. The value of the maximum monolayer adsorption capacity for Hg binding to rice husk ash according to the Langmuir’s parameter qmL was 3.998 mg g-1 (95% Confidence interval from 2.473 to 5.523), while bL (L mg-1), the Langmuir model constants was 0.067 L mg-1 (95% C.I. from 0.001 to 0.134). The Freundlich model is unable to forecast the maximal adsorption capacity. The Halsey rearrangement of the Freundlich equation gave the estimated maximum absorption of 3.39 mg g-1, which is very close to the experimental value. The nonlinear regression method provides parameter values within the 95% confidence interval, facilitating improved comparability with prior research.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135358534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Borehole Water Quality in Usmanu Danfodiyo University Sokoto (Permanent Site), Nigeria 尼日利亚索科托Usmanu Danfodiyo大学(永久站点)钻孔水质评价

Bioremediation Science and Technology Research Pub Date : 2023-07-31 DOI: 10.54987/bstr.v11i1.830

Muazu Gada Aliyu, Abbas Sani, Aliyu Ibrahim Muhammad, Halima Aliyu Gada, Nafiu Usman Jidaa, Abdulwasi Ibrahim Bagega

{"title":"Assessment of Borehole Water Quality in Usmanu Danfodiyo University Sokoto (Permanent Site), Nigeria","authors":"Muazu Gada Aliyu, Abbas Sani, Aliyu Ibrahim Muhammad, Halima Aliyu Gada, Nafiu Usman Jidaa, Abdulwasi Ibrahim Bagega","doi":"10.54987/bstr.v11i1.830","DOIUrl":"https://doi.org/10.54987/bstr.v11i1.830","url":null,"abstract":"It is acknowledged that access to high-quality water is crucial for any significant human development. Ten boreholes were used in obtaining the water sample. The samples were analyzed using the American Public Health Association (APHA) suggested procedures. The test parameters were compared to the chemical drinking water quality guideline established by the World Health Organisation. In a situation where the value is not provided, we relied on other pieces of literature. The research shows that the alkalinity, iron (Fe+), calcium (Ca2+), magnesium (Mg+), nitrate (NO3-), pH, conductivity, phosphate (PO43-), and total hardness (CaCO3) are all in line with the guidelines permissible limit which means are within the no-problem zone limits for health. While copper (Cu2+) was found to be within the permissible limit 2 mg/L in all the samples but BH1 (Junior Staff Quarters) 3mg/L which has health problems such as digestive disturbances, problems with the central nervous system, mucosal irritability, Wilson's illnesses, and liver and kidney damage.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135358530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inhibitive Assay of Insecticides using the Acetylcholinesterase from Poe-cilia reticulata (Peters, 1859) 利用Poe-cilia reticulata乙酰胆碱酯酶测定杀虫剂的抑制作用(Peters, 1859)

Bioremediation Science and Technology Research Pub Date : 2023-07-31 DOI: 10.54987/bstr.v11i1.832

Intan Nabilah Hazuki, Nur Adeela Yasid, Mohd Yunus Shukor

{"title":"Inhibitive Assay of Insecticides using the Acetylcholinesterase from Poe-cilia reticulata (Peters, 1859)","authors":"Intan Nabilah Hazuki, Nur Adeela Yasid, Mohd Yunus Shukor","doi":"10.54987/bstr.v11i1.832","DOIUrl":"https://doi.org/10.54987/bstr.v11i1.832","url":null,"abstract":"Poecilia reticulata (P. reticulata) is a species of tropical fish in the family Poeciliidae that is found all over the world and is a favorite in freshwater aquariums. The Malay name for this fish is \"Ikan Gapi,\" although the English term \"Guppy\" has become more common. The Million Fish, or Rainbow Fish, as it's known in other parts of the world. The goals of this research were to char-acterize the acetylcholinesterase that will be partially purified from P. reticulata brain extract using ammonium sulphate fractionation The screening results show that at 1 mg/L insecticide, acephate, dimethoate, trichlorfon and bendiocarb leads to 100% inhibition, whilst parathion, methomyl and malathion cause >90% inhibition. The AChE from P. reticulata is less sensitive to other species as far as the insecticides carbofuran, carbaryl, methomyl, bendiocarb, parathion, diazinon, chlorpyrifos with the exception of malathion, where the sensitivity of malathion to the AChE from was within the range of the AChE from other species such a E. electricus , Pangasius sp., Chan-na micropeltes, Clarias batrachus, H. nemurus, Tor tambroides, and Osteochilus hasselti.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135358531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Households Water Purification Using Solar Water Disinfection (SODIS) in Gombe Metropolis, Gombe State, Nigeria 尼日利亚贡贝州贡贝市使用太阳能水消毒(SODIS)净化家庭用水

Bioremediation Science and Technology Research Pub Date : 2023-07-31 DOI: 10.54987/bstr.v11i1.829

Abubakar M. Umar, Khalid Muhammad

{"title":"Households Water Purification Using Solar Water Disinfection (SODIS) in Gombe Metropolis, Gombe State, Nigeria","authors":"Abubakar M. Umar, Khalid Muhammad","doi":"10.54987/bstr.v11i1.829","DOIUrl":"https://doi.org/10.54987/bstr.v11i1.829","url":null,"abstract":"Assessment of water quality has been an important issue nowadays as the available water supply is severely polluted and can be the cause of waterborne diseases like cholera, diarrhea and dysentery. Solar disinfection (SODIS) is an efficient, low technology and cost-effective method for inactivation of pathogenic microorganisms in low-income communities where clean drinking water is limited or absent. The study was designed to assess the information about sanitation behavior at the household level using a structured questionnaire and to provide cost-effective method for its treatment. The result of the bacteriological analysis shows that all the water samples were found to harbour coliforms organisms in numbers greater than the required WHO/FAO/NSDWQ standards. The isolated organisms were identified to be Enterobacter aerogenes, species. SODIS was proven to be a more environmentally friendly and low-cost method to disinfect water against the conventional methods of water treatment that require high technology and it is time-consuming. In addition, the chemical used in the treatment process might be toxic. Providing the community with simple water treatment techniques using the SODIS method, and intensive health education and sanitation practices for the community are highly recommended.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135358536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison between the Four-parameter and Five-parameter Logistics Equations in the Determination of the Limits of Detection of Ochratoxin A 四参数与五参数物流方程测定赭曲霉毒素A检出限的比较

Bioremediation Science and Technology Research Pub Date : 2023-07-31 DOI: 10.54987/bstr.v11i1.831

Siti Noraini Bunawan, Noor Azlina Masdor

{"title":"Comparison between the Four-parameter and Five-parameter Logistics Equations in the Determination of the Limits of Detection of Ochratoxin A","authors":"Siti Noraini Bunawan, Noor Azlina Masdor","doi":"10.54987/bstr.v11i1.831","DOIUrl":"https://doi.org/10.54987/bstr.v11i1.831","url":null,"abstract":"Ochratoxin A, a type of mycotoxin, was detected in plant sample matrices using the \"optical waveguide lightmode spectroscopy\" (OWLS) method. The calibration curve for the detection of ochratoxin A utilizing \"optical waveguide lightmode spectroscopy\" (OWLS) displayed a sigmoidal shape; hence, the 5-parameter logistics (5-PL) or 4-parameters logistics (4-PL) model should be used to fit the data rather than a linear model. Through the use of error function analysis and various functions such as Bias Factor, corrected Akaike Information Criterion (AICc), adjusted correlation coefficient (adjR2), Hannan–Quinn information criterion (HQC), Root Mean Square Error (RMSE), Bayesian Information Criterion (BIC), and Accuracy Factor, the distinction between the 5-PL and 4-PL models is found to be inconsistent. The half maximal effective concentration (EC50) confidence intervals overlapped, indicating no difference between the two methods; the 4-PL model was chosen because of its fewer parameters. The Limits of Detection (LOD) calculated using the 4-PL equation was 0.818 ng/mL, with a 95% confidence interval of 0.526-1.143 ng/mL. This value falls within the estimated range of 0.5 to 10 ng/mL found in the first investigation. Not only was the linear component of the data curve successfully represented by this study's use of the 4-PL model, but the model was also successful in representing the entire date curve.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135358535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bacteriological Survey of Abattoir Wastewater in Aba, Abia State, Nigeria 尼日利亚阿比亚州阿巴屠宰场废水的细菌学调查

Bioremediation Science and Technology Research Pub Date : 2023-07-31 DOI: 10.54987/bstr.v11i1.793

Emmanuel Gideon Idu, Benjamin Oluwafemi Omidele, D. Nwaubani, Chioma Orieji Anya Okwara, Victor Ugbede Okpanachi

{"title":"Bacteriological Survey of Abattoir Wastewater in Aba, Abia State, Nigeria","authors":"Emmanuel Gideon Idu, Benjamin Oluwafemi Omidele, D. Nwaubani, Chioma Orieji Anya Okwara, Victor Ugbede Okpanachi","doi":"10.54987/bstr.v11i1.793","DOIUrl":"https://doi.org/10.54987/bstr.v11i1.793","url":null,"abstract":"The bacteriological survey of abattoir wastewater in Aba was investigated. Samples of wastewater contaminated with abattoir waste were collected at ten different spots in the abattoir. Nutrient agar was utilised as the media for the total aerobic plate count, McConkey agar was used for the coliform count, and cellulolytic media was used for the cellulolytic count. It was done using the pour plate method. The bacteria were identified using colonial morphology, gram staining, and biochemical assays. All of the aerobic plates, coliform count and cellulolytic count for the abattoir wastewater ranged from 1.03 x107 to 7.1 x 106 CFU/mL, 5.8 x 106 to 1.2 x 106 CFU/mL and 3.7 x106 to1.3x 106 CFU/mL, respectively. Streptococcus spp., Pseudomonas spp., Staphylococcus aureus, Bacillus spp., Micrococcus spp., Vibrio cholerae, Klebsiella spp., and Escherichia coli were among the bacteria that were isolated. This survey further confirmed the presence of varying bacteria genera in abattoir wastewater and the expedient nature of treating wastewater rather than releasing it to the physical environment as it poses a threat to public health.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127901963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Isothermal Remodelling of the Biosorption of Congo Red onto Kaolin 高岭土对刚果红吸附的等温模拟

Bioremediation Science and Technology Research Pub Date : 2023-07-31 DOI: 10.54987/bstr.v11i1.834

Faggo Abdullahi Adamu, Ain Aqilah Basirun, Ahmad Syazwan Ismail, Mohd Ezuan Khayat, Mohd Yunus Shukor

{"title":"Isothermal Remodelling of the Biosorption of Congo Red onto Kaolin","authors":"Faggo Abdullahi Adamu, Ain Aqilah Basirun, Ahmad Syazwan Ismail, Mohd Ezuan Khayat, Mohd Yunus Shukor","doi":"10.54987/bstr.v11i1.834","DOIUrl":"https://doi.org/10.54987/bstr.v11i1.834","url":null,"abstract":"A remodeling analysis was conducted on the sorption isotherm data for Congo Red adsorption onto kaolin using nonlinear regression. (CR) also known as 1-naphthalenesulfonic acid, 3,3′-(4,4′-biphenylenebis(azo)) bis(4-amino-) disodium salt, is a synthetic anionic azo dye widely utilized in various industrial sectors, including rubber, plastic, textiles, paper, and printing. This dye is of significant interest due to its versatile applications and unique chemical properties. To prevent overfitting due to the limited data points, isotherm models with up to three parameters were utilized. Statistical analysis based on error function assessments, including root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), accuracy factor (AF), bias factor (BF), Bayesian Information Criterion (BIC), corrected AICc (Akaike Information Criterion), and Hannan-Quinn Criterion (HQC), revealed that the best performance was achieved by the Freundlich model, followed by the Langmuir and Jovanovic models, which ranked as the top three models.The best isotherm model was found to be the Unilan followed by (descending order) Brouers–Sotolongo, Hill, Sips and Langmuir. The Unilan maximum adsorption capacity, shows large deviation from the experimentally observed value with a large 95% confidence interval, indicating poor fitting parameters despite being the best model based on the error function analysis. The next best model was Brouers–Sotolongo with a maximum adsorption capacity, qmBS of 5.48 mg g-1 (95% confidence interval from 4.791 to 6.172) which agrees with experimental observations. The value of the maximum monolayer adsorption capacity for Congo Red binding to kaolin according to the Langmuir’s parameter qmL was 5.49 mg g-1 (95% Confidence interval from 5.018 to 5.967), while bL (L mg-1), the Langmuir model constants was 0.5 L mg-1 (95% C.I. from 0.285 to 0.710).","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135358532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inhibitory Effect of Copper on the Growth Rate of Serratia marcescens strain DRY6 on SDS 铜对粘质沙雷菌DRY6在SDS上生长速率的抑制作用

Bioremediation Science and Technology Research Pub Date : 2022-12-31 DOI: 10.54987/bstr.v10i2.778

Farah Hanani Muhamad, M. Manogaran, N. A. Yasid

{"title":"Inhibitory Effect of Copper on the Growth Rate of Serratia marcescens strain DRY6 on SDS","authors":"Farah Hanani Muhamad, M. Manogaran, N. A. Yasid","doi":"10.54987/bstr.v10i2.778","DOIUrl":"https://doi.org/10.54987/bstr.v10i2.778","url":null,"abstract":"The anionic surfactant known as sodium dodecyl sulfate (SDS) or sodium lauryl sulfate (SLS) is found in a wide variety of products designed for cleaning and personal hygiene. Because of the combination of its hydrocarbon tail and its polar \"headgroup,\" the molecule possesses the amphiphilic qualities that make it suitable for use as a detergent. Due to this it is a major pollutant in aquatic bodies. One of the most researched types of cleanup is biodegradation by microorganisms, particularly bacteria. Copper has a profound effect in inhibiting the degradation of SDS by the bacteria Serratia marcescens strain DRY6. Under different copper concentrations, the SDS-degrading bacteria grew in a sigmoidal manner with lag times of 7 to 10 hours. Overall growth was decreased when the concentration of copper was raised, with 1.0 g/L virtually completely stopping bacterial growth. Rates of expansion at various copper concentrations were calculated using a modified Gompertz model. Following the modification of the Gompertz model, the growth rates were modeled using the modified Han-Levenspiel, Wang, Liu, modified Andrews, and the Amor models. Only three of the five models (Wang, modified Han-Levenspiel, and the Liu models) were able to match the curve; the modified Andrews and Amor models did not. As for model fit, the Wang and modified Han-Levenspiel models perform admirably, but the Liu model performs poorly. The Wang model performed best statistically, with the lowest RMSE and AICc values, the greatest adjusted correlation coefficient (adR2), and AF and BF values closest to unity. The Wang model yielded estimates of 0.216 (95% confidence interval: 0.193 to 0.239), 1.05 (95% confidence interval: 0.938 to 1.167), and 0.389 (95% confidence interval: 0.148 to 0.636) for the critical heavy metal ion concentration (g/l), maximum growth rate (g/l h), and empirical constant.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114933738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Response Surface Method for the Optimization of E. cloacae Strain UPM2021a Growth on Acrylamide as a Nitrogen Source 响应面法优化丙烯酰胺为氮源的阴沟肠杆菌UPM2021a生长条件

Bioremediation Science and Technology Research Pub Date : 2022-12-31 DOI: 10.54987/bstr.v10i2.779

A. Abubakar, M. Manogaran, H. Yakasai, N. A. Yasid, M. Shukor

{"title":"Response Surface Method for the Optimization of E. cloacae Strain UPM2021a Growth on Acrylamide as a Nitrogen Source","authors":"A. Abubakar, M. Manogaran, H. Yakasai, N. A. Yasid, M. Shukor","doi":"10.54987/bstr.v10i2.779","DOIUrl":"https://doi.org/10.54987/bstr.v10i2.779","url":null,"abstract":"Acrylamide is often used in soil stabilization works. It is a neurotoxin and leachate from such stabilization works contaminate soils all around the world. E. cloacae strain UPM2021a which had been previously isolated and demonstrated the ability to degrade acrylamide was further studied for its critical parameters contributing to the optimum growth of acrylamide. The Box-Behnken design was utilized in optimizing the three previously identified significant components (pH, incubation time and acrylamide concentration). Of the three factors, acrylamide and pH were the significant factors. The response surface plot exhibited evidence of interactions. Predicted optimal conditions were determined using the \"Numerical Optimisation\" toolbox of the Design Expert software. Two optimal conditions were tested. The model predicted a maximum growth of 10.686 (95% C.I., 10.458 to 10.913) which was verified through experimental results with a growth of 11.257 (95% C.I., 11.051 to 11.462) with the actual results being near to the predicted values but was significantly higher than the predicted values. The second numerical optimization gave a solution with a predicted maximum growth of 9.305 log CFU/mL (95% C.I. from 9.011 to 9.614) which was verified through experimental results with a growth of 9.978 log CFU/mL (95% C.I. from 9.830 to 10.126) with the actual results were also significantly higher than the predicted values. This means that other methods which employ more runs such as CCD or a different optimization approach such as Artificial Neural Network may be employed in the future to close the difference between the model predicted and actual experimental values. Despite this, the RSM exercise gave far better growth on acrylamide than OFAT with a higher response of about 2 log CFU/mL unit indicating the utility of RSM over OFAT in the optimization of growth of this bacterium on acrylamide.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128571790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Isolation and Growth Characterization of an Acrylamide-degrading E. cloacae strain UPM2021a Isolated from a Paddy Field 稻田丙烯酰胺降解阴沟肠杆菌UPM2021a的分离及生长特性研究

Bioremediation Science and Technology Research Pub Date : 2022-12-31 DOI: 10.54987/bstr.v10i2.739

Ubana Muhammed Abdullahi, Faggo Abdullahi Adamu, M. Manogaran, N. A. Yasid, M. Shukor

{"title":"Isolation and Growth Characterization of an Acrylamide-degrading E. cloacae strain UPM2021a Isolated from a Paddy Field","authors":"Ubana Muhammed Abdullahi, Faggo Abdullahi Adamu, M. Manogaran, N. A. Yasid, M. Shukor","doi":"10.54987/bstr.v10i2.739","DOIUrl":"https://doi.org/10.54987/bstr.v10i2.739","url":null,"abstract":"Acrylamide is a suspected carcinogen and a global pollutant. The presence of acrylamide in the soil is a major source of this chemical. Microbe-mediated acrylamide breakdown as a bioremediation technique is gaining popularity across the world. Several bacteria capable of digesting acrylamide have been identified in paddy field soils. The best isolate was a bacterium identified tentatively as E. cloacae strain UPM2021a based on cultural, colony morphology and biochemical tests. According to early studies, ideal growth parameters included a pH range of 6.5 and 7.5 and a temperature range of 25 to 35 degrees Celsius. Acrylamide dosages of up to 2500 mg/L were explored as a single nitrogen supply. The greatest growth occurs between 300 and 1000 mg/L of acrylamide, resulting in an approximate nett growth of 3 log CFU/mL when compared to the control. Growth was practically tolerated at 1700 mg/L, and growth stopped entirely at concentrations above 2000 mg/L. Toxic heavy metals such as mercury, copper, chromium, and cadmium hampered acrylamide development with mercury being the strongest inhibitor whilst other metal ions such as copper, cadmium, and chromium show from 30 to 50% inhibition whilst lead was the least inhibiting. The relatively high tolerant of acrylamide makes this bacterium suitable for remediation of soil contaminated with acrylamide whilst its sensitivity to heavy metals chiefly mercury means metal-chelating or sequestering compounds must be added to soil contaminated with both acrylamide and heavy metals.","PeriodicalId":436607,"journal":{"name":"Bioremediation Science and Technology Research","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125022234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1