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Chalotra A, Babbar R, Ratha D, Baranwal M, Rout PR. Assessment of kinetic and statistical models for predicting breakthrough curves of bio-colloid transport through saturated porous media. JOURNAL OF CONTAMINANT HYDROLOGY 2023; 259:104246. [PMID: 37741029 DOI: 10.1016/j.jconhyd.2023.104246] [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: 04/15/2023] [Revised: 09/04/2023] [Accepted: 09/17/2023] [Indexed: 09/25/2023]
Abstract
The microbial contamination of groundwater and its prevention is a widespread concern in developing countries. The present study simulated the transportation and interception of bio-colloid, Escherichia coli in porous media experimentally using packed columns to address certain aspects of underexplored sorption potential and validated using several kinetic models. The breakthrough curves obtained through experiments are observed to be in good agreement with its prediction using kinetic models namely Thomas, Yoon-Nelson and Modified Dose-Response. The overall comparisons of R2 among all the three models suggest that the MDR model fits more perfectly to experimental results. The combined effect of independent factors (column depth, particle size and alumina content) on response factors (maximum relative concentration and time required to achieve peak concentration) was investigated by using Box-Behnken Design under Response Surface Methodology (RSM) to check statistical significancy of independent factors. The R2 values for both response factors are observed to be 0.94 and 0.99, indicating a very high correlation between predicted and actual values. The results obtained in the present study also confirms that the travel distance and particle size are the statistically significant parameters that efficiently impact on sorption of Escherichia coli during their transport whereas the alumina content also affects the sorption but is observed to be a statistically non-significant.
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Affiliation(s)
- Ajay Chalotra
- Department of Civil Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab 147004, India
| | - Richa Babbar
- Department of Civil Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab 147004, India.
| | - Dwarikanath Ratha
- Department of Civil Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab 147004, India.
| | - Manoj Baranwal
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, Punjab 147004, India.
| | - Prangya Ranjan Rout
- Department of Biotechnology, National Institute of Technology Jalandhar, Punjab 144027, India.
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2
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Januševičius T, Šarko J, Mažeikienė A. Phosphate adsorption from water and wastewater using non-devulcanised and devulcanised tyre rubber. Heliyon 2023; 9:e19776. [PMID: 37809480 PMCID: PMC10559113 DOI: 10.1016/j.heliyon.2023.e19776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 10/10/2023] Open
Abstract
The secondary use of tyre rubber is a potentially sustainable environmental solution. However, the sorption properties of used-tyre rubber have not yet been fully investigated. In this study, the rubber type (vulcanised or devulcanised part-worn tyre rubber) that can sorb phosphate phosphorus from aqueous solutions or wastewater more effectively is determined. The capacity of granules (0.3-1.0 mm in diameter) of non-devulcanised ground tyre rubber and uniquely chemically devulcanised rubber to adsorb phosphorus is evaluated under laboratory conditions. The results show that under the filtration of an aqueous solution or biologically treated wastewater at a flow rate of 0.75 m/h (1.2 L/h), 1 g of the devulcanised rubber medium accumulates 5.16 mg of phosphorus, which is five times more than that accumulated by the non-devulcanised rubber medium. The surface structure of the non-devulcanised rubber medium is more suitable for the sorption of devulcanised rubber granules. The sorption capacity and effectiveness of non-devulcanised rubber for phosphorus removal are more favourable compared with those of the tested natural and waste-prepared sorbents. Further research into this material as a medium for filter layers and for accumulating drainage should be conducted. The findings of this study are important for addressing issues associated with the secondary use of tyre rubber.
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Affiliation(s)
- Tomas Januševičius
- Department of Environmental Protection and Water Engineering, Faculty of Environmental Engineering, Vilnius Gediminas Technical University, 10223, Vilnius, Lithuania
| | - Julita Šarko
- Department of Environmental Protection and Water Engineering, Faculty of Environmental Engineering, Vilnius Gediminas Technical University, 10223, Vilnius, Lithuania
| | - Aušra Mažeikienė
- Department of Environmental Protection and Water Engineering, Faculty of Environmental Engineering, Vilnius Gediminas Technical University, 10223, Vilnius, Lithuania
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3
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Upadhyay U, Gupta S, Agarwal A, Sreedhar I, Anitha KL. Adsorptive removal of Cd 2+ ions using dolochar at an industrial-scale process optimization by response surface methodology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:8403-8415. [PMID: 34846661 DOI: 10.1007/s11356-021-17216-9] [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: 08/18/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
In this work, performance of laboratory-synthesized dolochar has been investigated for adsorption of Cd2+ ions in a large-scale process with the application of Aspen Adsorption. Moreover, the optimum values of the operating parameters (namely, flow rate, bed height, and inlet metal ion concentration) that would result into maximum amount of cadmium ion adsorption (high exhaustion capacity) in minimum time (less exhaustion time) for a fixed mass of dolochar have been calculated via the application of response surface methodology. It was found that, at optimum values of bed height (3.48 m), flow rate (76.31 m3/day), and inlet concentration (10 ppm), the optimized value of exhaustion capacity and exhaustion time for cadmium ion adsorption in dolochar packed bed is equal to 1.85 mg/g and 11.39 h, respectively. The validity of these simulation experiments can be proven by the fact that the obtained exhaustion capacity of dolochar packed bed always remained in close proximity of the experimentally obtained value of adsorption capacity of the dolochar in batch process mode (equal to 2.1 mg/g).
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Affiliation(s)
- Utkarsh Upadhyay
- Department of Chemical Engineering, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India
| | - Sarthak Gupta
- Department of Chemical Engineering, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India
| | - Ankita Agarwal
- Department of Chemical Engineering, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India
| | - Inkollu Sreedhar
- Department of Chemical Engineering, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India.
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Fulazzaky MA, Abdullah S, Muda K, Martin AY, Fulazzaky M. New kinetic models for predicting the removal of oil and grease from food-processing industry wastewater. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.10.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Sahu RL, Dash RR, Pradhan PK. A study on adsorption of anionic surfactant from water during riverbank filtration. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hu J, Yang X, Deng X, Liu X, Yu J, Chi R, Xiao C. Isolation and Nitrogen Removal Efficiency of the Heterotrophic Nitrifying-Aerobic Denitrifying Strain K17 From a Rare Earth Element Leaching Site. Front Microbiol 2022; 13:905409. [PMID: 35756011 PMCID: PMC9216216 DOI: 10.3389/fmicb.2022.905409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 05/09/2022] [Indexed: 11/20/2022] Open
Abstract
K17, an indigenous and heterotrophic nitrifying-aerobic denitrifying bacterium, was isolated from the soil of a weathered crust elution-deposited rare earth ore leaching site in Longnan County, China. Strain K17 was identified as Pseudomonas mosselii. In this study, the morphological characteristics of strain K17 were observed and the optimal ammonia nitrogen removal conditions for the strain were studied using a single-factor experiment. Key enzyme activities were determined, and we also explored the ammonia nitrogen removal process of strain K17 on simulated leaching liquor of the rare earth element leaching site. Based on the determination of ammonia nitrogen removal and enzyme activity, it was found that strain K17 has both heterotrophic nitrifying and aerobic denitrifying activities. In addition, single-factor experiments revealed that the most appropriate carbon source for strain K17 was sodium citrate with a C/N ratio of 10 and an initial NH4+-N concentration of 100 mg/l. Furthermore, the optimal initial pH and rotation speed were 7 and 165 r/min, respectively. Under optimal conditions, the ammonia nitrogen removal efficiency of strain K17 was greater than 95%. As an indigenous bacterium, strain K17 has great potential for treating residual ammonium leaching solutions from rare earth element leaching sites.
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Affiliation(s)
- Jingang Hu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Xinyu Yang
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Xiangyi Deng
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Xuemei Liu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Junxia Yu
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Ruan Chi
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, China
| | - Chunqiao Xiao
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Key Laboratory for Green Chemical Process of Ministry of Education, School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan, China
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7
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Research and Modelling the Ability of Waste from Water and Wastewater Treatment to Remove Phosphates from Water. Processes (Basel) 2022. [DOI: 10.3390/pr10020412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This research investigated the ability of two materials, which are waste generated during water treatment and wastewater treatment, to remove phosphates from water. The selected materials were quartz sand used in drinking water treatment plants (OQS) and incinerated (600 °C) sewage sludge (ISS). The materials were chosen for their composition: both contain aluminium, iron, and calcium. The experiments were carried out in the laboratory (in batch and in columns stand). Modelling of the sorption processes was performed on the basis of results from experiments in batches. The maximum adsorption capacity of the OQS was 1.14 mg/g obtained using the linearized Langmuir model and the maximum adsorption capacity of the ISS was 0.86 mg/g for the linearized Langmuir model (in batch). A pseudo-first-order model obtained using a nonlinear fit can accurately explain phosphate adsorption kinetics using both adsorbents: OQS and ISS. During the column filtration experiment, a higher sorption capacity of the ISS filter media was achieved −2.1 mg of phosphate phosphorus per gram of filter media. The determined adsorption capacity of the investigated materials was average, but the reuse of this waste would help to solve the issues of the circular economy.
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Rout PR, Shahid MK, Dash RR, Bhunia P, Liu D, Varjani S, Zhang TC, Surampalli RY. Nutrient removal from domestic wastewater: A comprehensive review on conventional and advanced technologies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 296:113246. [PMID: 34271353 DOI: 10.1016/j.jenvman.2021.113246] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 06/13/2021] [Accepted: 07/07/2021] [Indexed: 05/06/2023]
Abstract
Nitrogen and phosphorous are indispensable for growth and vitality of living beings, hence termed as nutrients. However, discharge of nutrient rich waste streams to aquatic ecosystems results in eutrophication. Therefore, nutrient removal from wastewater is crucial to meet the strict nutrient discharge standards. Similarly, nutrient recovery from waste streams is vital for the realization of a circular economy by avoiding the depletion of finite resources. This manuscript presents analysis of existing information on different conventional as well as advanced treatment technologies that are commonly practiced for the removal of nutrient from domestic wastewater. First, the information pertaining to the biological nutrient removal technologies are discussed. Second, onsite passive nutrient removal technologies are reviewed comprehensively. Third, advanced nutrient removal technologies are summarized briefly. The mechanisms, advantages, and disadvantages of these technologies along with their efficiencies and limitations are discussed. An integrated approach for simultaneous nutrient removal and recovery is recommended. The fifth section of the review highlights bottlenecks and potential solutions for successful implementation of the nutrient removal technologies. It is anticipated that the review will offer an instructive overview of the progress in nutrient removal and recovery technologies and will illustrate necessity of further investigations for development of efficient nutrient removal and recovery processes.
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Affiliation(s)
- Prangya Ranjan Rout
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
| | - Muhammad Kashif Shahid
- Department of Environmental Engineering, Chungnam National University, Republic of Korea
| | - Rajesh Roshan Dash
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, India
| | - Puspendu Bhunia
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, India
| | - Dezhao Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, 382 010, Gujarat, India.
| | - Tian C Zhang
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Omaha, NE, 68182, USA
| | - Rao Y Surampalli
- Global Institute for Energy, Environment and Sustainability, Kansas, USA
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9
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Zhao Y, Yang JY, Li TT, Liu G, Wang YY, Jiang Y, Wang ZX, Zhang FF, Li YS, Liu Y. Controlled preparation of a MCC- g-AM/EDA/PA loaded Fe(iii) adsorbent by the pre-radiation grafting method and its application for the adsorption removal of phosphate. RSC Adv 2021; 11:6173-6181. [PMID: 35423147 PMCID: PMC8694866 DOI: 10.1039/d0ra09389k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/22/2021] [Indexed: 11/21/2022] Open
Abstract
A new spherical cellulose-based adsorbent and high phosphate removal rate microcrystalline cellulose-g-acrylamide/ethylenediamine/phthalic anhydride (MCC-g-AM/EDA/PA) loaded Fe(iii) adsorbent was prepared by a pre-radiation grafting and chemical modification method. Fe(iii) was successfully introduced into the modified grafted chains of the MCC-g-AM/EDA/PA resin, and characterized by FTIR, TG, XRD, SEM and XPS. The optimized conditions for the grafting reaction of acrylamide (AM) onto MCC were 20% AM emulsion at an absorbed dose of 30 kGy, and a grafting rate as high as 247%. In addition, the adsorption performance of the adsorbent was tested by static adsorption experiments with phosphate. The adsorbent resin showed excellent adsorption performance under alkaline conditions, contributions to the synergetic effect of precipitation, and inner-sphere surface complex reactions. The adsorption efficiency can reach 89.7% at low concentration. In summary, the neotype spherical cellulose-based adsorbent has the advantages of being separation-free in bulk materials, avoiding secondary pollution, and being easy to recycle, and it could be employed as an environmentally friendly adsorbent for phosphate removal in eutrophic water.
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Affiliation(s)
- Yuan Zhao
- Key Laboratory of Coal Conversion, New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Hubei Wuhan 430081 China
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Jin-Yu Yang
- Key Laboratory of Coal Conversion, New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Hubei Wuhan 430081 China
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Ting-Ting Li
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Guo Liu
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Ya-Yang Wang
- Key Laboratory of Coal Conversion, New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Hubei Wuhan 430081 China
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Yu Jiang
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Zheng-Xi Wang
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Fang-Fang Zhang
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Yue-Sheng Li
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science & Technology Hubei Xianning 437100 P. R. China
| | - Yi Liu
- Key Laboratory of Coal Conversion, New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology Hubei Wuhan 430081 China
- State Key Laboratory of Separation Membranes and Membrane Processes, College of Chemistry and Chemical Engineering, College of Environmental Science and Engineering, Tiangong University Tianjin 300387 P. R. China
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10
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Hydrated zirconia-loaded resin for adsorptive removal of phosphate from wastewater. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124909] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Shami S, Dash RR, Verma AK, Dash AK, Pradhan A. Adsorptive removal of surfactant using dolochar: A kinetic and statistical modeling approach. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:222-235. [PMID: 31368608 DOI: 10.1002/wer.1193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/12/2019] [Accepted: 07/26/2019] [Indexed: 06/10/2023]
Abstract
Disturbingly high rates of consumption of surfactants in household and industries have led to mark them as emerging contaminants in the environment. In the present work, removal of sodium dodecyl sulfate (SDS), an anionic surfactant, using an industrial waste (dolochar) was explored. The adsorbent material was characterized with the help of Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Kinetic evaluation was performed using first, pseudo-first, second, and pseudo-second order models. Adsorption of SDS over dolochar was expressed best by pseudo-second order kinetic model with regression coefficient (R2 ) of .99. Three input parameters including adsorbent dose (20-10 g/L), initial concentration (30-100 mg/L) of the surfactant, and contact time (2-60 min) were chosen for optimization using response surface methodology based on Box-Behnken design (BBD) approach. A total of 15 experiments were run to examine the effect of these variables on removal of SDS by dolochar in a multivariate system. A regression analysis indicated the experimental data fitted well to a quadratic polynomial model with coefficient of regression (R2 ) as .99. ANOVA and lack-of-fit test depicted the precision and efficiency of the model. The optimized conditions for SDS removal were found to be adsorbent dose 16.62 g/L, contact time 40 min, and initial concentration 47 mg/L with removal efficiency as 98.91%. PRACTITIONER POINTS: Daily ablutions and use of personal care products introduce a number of surfactants and recalcitrant compounds into the environment. Adsorption is a handy and easy to operate treatment technique to remove graywater pollutants. Kinetic and statistical modeling may be recommended as one of the most prominent tools to understand the removal mechanism. Decentralized treatment of graywater using industrial wastes is recommended as sustainable solution in the developing nations.
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Affiliation(s)
- Shreya Shami
- Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Rajesh Roshan Dash
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, Odisha, India
| | - Akshaya Kumar Verma
- Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Aditya Kishore Dash
- Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Abanti Pradhan
- Faculty of Engineering and Technology (ITER), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
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Reinhardt T, Gómez Elordi M, Minke R, Schönberger H, Rott E. Batch studies of phosphonate adsorption on granular ferric hydroxides. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:10-20. [PMID: 32293584 DOI: 10.2166/wst.2020.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Phosphonates are widely used in various industries. It is desirable to remove them before discharging phosphonate-containing wastewater. This study describes a large number of batch experiments with adsorbents that are likely suitable for the removal of phosphonates. For this, adsorption isotherms for four different granular ferric hydroxide (GFH) adsorbents were determined at different pH values in order to identify the best performing material. Additionally, the influence of temperature was studied for this GFH. A maximum loading for nitrilotrimethylphosphonic acid (NTMP) was found to be ∼12 mg P/g with an initial concentration of 1 mg/L NTMP-P and a contact time of 7 days at room temperature. Then, the adsorption of six different phosphonates was investigated as a function of pH. It was shown that GFH could be used to remove all investigated phosphonates from water and, with an increasing pH, the adsorption capacity decreased for all six phosphonates. Finally, five adsorption-desorption cycles were carried out to check the suitability of the material for multiple re-use. Even after five cycles, the adsorption process still performed well.
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Affiliation(s)
- T Reinhardt
- Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail:
| | - M Gómez Elordi
- Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail:
| | - R Minke
- Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail:
| | - H Schönberger
- Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail:
| | - E Rott
- Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany E-mail:
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13
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Rusmirović JD, Obradović N, Perendija J, Umićević A, Kapidžić A, Vlahović B, Pavlović V, Marinković AD, Pavlović VB. Controllable synthesis of Fe 3O 4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:12379-12398. [PMID: 30847816 DOI: 10.1007/s11356-019-04625-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 02/19/2019] [Indexed: 06/09/2023]
Abstract
Iron oxide, in the form of magnetite (MG)-functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-γ-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g-1 for WL-γ-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g-1 for Cd2+, Ni2+, phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-γ-APS/MG, e.g., 1.17-13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-γ-APS.
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Affiliation(s)
- Jelena D Rusmirović
- Innovation Center of the Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, 11120, Serbia.
| | - Nina Obradović
- Institute of Technical Sciences of SASA, Knez Mihailova 35/IV, Belgrade, 11000, Serbia
| | - Jovana Perendija
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 4, Belgrade, 11000, Serbia
| | - Ana Umićević
- Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Ana Kapidžić
- Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Branislav Vlahović
- Department of Mathematics and Physics, North Carolina Central University, Durham, USA
| | - Vera Pavlović
- Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, Belgrade, 11120, Serbia
| | - Aleksandar D Marinković
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, 11120, Serbia
| | - Vladimir B Pavlović
- Institute of Technical Sciences of SASA, Knez Mihailova 35/IV, Belgrade, 11000, Serbia
- Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade-, Zemun, 11080, Serbia
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Singh R, Bhunia P, Dash RR. Optimization of bioclogging in vermifilters: A statistical approach. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 233:576-585. [PMID: 30597351 DOI: 10.1016/j.jenvman.2018.12.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 12/12/2018] [Accepted: 12/19/2018] [Indexed: 06/09/2023]
Abstract
In the present research, an experiment was conducted with the objective of optimization of the role of earthworms in alleviating the bioclogging of a horizontal subsurface flow vermifilter (HSSFVF), caused due to the application of organics rich brewery wastewater. In this experiment, for the optimization of bioclogging of the vermifilters, the Box-Behnken Design (BBD) and response surface methodology (RSM) were involved. Hydraulic loading rate (HLR), influent COD and earthworm density (EWD) are the variables against which the bioclogging of the HSSFVF has been optimized. EWD of 9475 earthworms/m3, HLR of 1.84 m3/m2-d and influent COD of 3701 mg/L have been observed as the optimized values for the minimum bioclogging in the vermifiltration of brewery wastewater. At this optimum boundary conditions, the reduction in hydraulic conductivity was obtained as 1.49%, against the predicted value of 1.67% based upon the BBD model. The verification of the model against real brewery wastewater yielded insignificant error and thus very strongly portrays the suitability of the derived BBD model. The study indicates that the bioclogging from the vermifilters can be minimized, if the variables are optimized using the response surface methodology.
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Affiliation(s)
- Rajneesh Singh
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India
| | - Puspendu Bhunia
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India.
| | - Rajesh R Dash
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India
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15
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Singh R, Bhunia P, Dash RR. Optimization of organics removal and understanding the impact of HRT on vermifiltration of brewery wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:1283-1293. [PMID: 30360260 DOI: 10.1016/j.scitotenv.2018.09.307] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/11/2018] [Accepted: 09/23/2018] [Indexed: 06/08/2023]
Abstract
The study was conducted with an aim to optimize the parameters involved in removing organics from brewery effluents using a newly developed horizontal subsurface flow vermifilter. It was also aimed at understanding the impact of hydraulic retention time (HRT) on the vermifiltration of brewery wastewater. With the help of Box-Behnken design (BBD) and response surface methodology, optimization of the COD removal from the vermifiltration was carried out. The parameters chosen for the optimization were hydraulic loading rate (HLR), organics strength and earthworm densities (EWDs). The model obtained from the response surface methodology (RSM) analysis was a quadratic polynomial model with R2 value of 0.99. The optimal conditions for achieving maximum chemical oxygen demand (COD) removal were at influent COD concentration of 3542.22 mg/L, EWD of 9661.33 earthworms/m3 and HLR of 1.84 m3/m2·d. At the optimum conditions, COD removal of 94.99% was obtained against the predicted value of 95.85%. Verification of the model on real brewery wastewater also showed minimal error against the predicted COD removal. The COD, total nitrogen (TN) and total phosphorous (TP) removal at the HRT of 10.66 h were found to be 73.88%, 18.13% and 39.04%, respectively. Whereas, The COD, TN and TP removals at the HRT of 26.66 h were 96.24, 21.57 and 43.3%, respectively.
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Affiliation(s)
- Rajneesh Singh
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India
| | - Puspendu Bhunia
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India.
| | - Rajesh R Dash
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India
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16
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Potential Sustainable Slow-Release Fertilizers Obtained by Mechanochemical Activation of MgAl and MgFe Layered Double Hydroxides and K₂HPO₄. NANOMATERIALS 2019; 9:nano9020183. [PMID: 30717186 PMCID: PMC6410234 DOI: 10.3390/nano9020183] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/16/2019] [Accepted: 01/23/2019] [Indexed: 11/21/2022]
Abstract
This study describes the behavior of potential slow-release fertilizers (SRF), prepared by the mechanochemical activation of calcined Mg2Al-CO3 or Mg2Fe-CO3 layered double hydroxides (LDH) mixed with dipotassium hydrogen phosphate (K2HPO4). The effects of LDH thermal treatment on P/K release behavior were investigated. Characterizations of the inorganic composites before and after release experiments combined X-Ray diffraction (XRD), Fourier-transform infra-red spectroscopy (FTIR), solid-state nuclear magnetic resonance (NMR), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). The best release profile (<75% in 28 days and at least 75% release) was obtained for MgAl/K2HPO4 (9 h milling, 2:1 molar ratio, MR). Compared to readily used K2HPO4, milling orthophosphate into LDH matrices decreases its solubility and slows down its release, with 60% and 5.4% release after 168 h for MgAl/K2HPO4 and MgFe/K2HPO4 composites, respectively. Mechanochemical addition of carboxymethylcellulose to the LDH/K2HPO4 composites leads to a noticeable improvement of P release properties.
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17
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Ahmed S, Ashiq MN, Li D, Tang P, Leroux F, Feng Y. Recent Progress on Adsorption Materials for Phosphate Removal. RECENT PATENTS ON NANOTECHNOLOGY 2019; 13:3-16. [PMID: 30848222 DOI: 10.2174/1872210513666190306155245] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 02/07/2019] [Accepted: 02/14/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND High concentration of phosphate has been threatening human health and the ecosystem. Adsorption is one of high-efficiency and low-cost techniques to reduce the concentration of phosphate. This mini review aims to summarize the recent development of adsorption materials for phosphate removal. METHOD We conducted a detailed search of "adsorption of phosphate" in the published papers and the public patents on the adsorbents for phosphate based on Web of Science database in the period from January 1 2012 to December 31 2017. The corresponding literature was carefully evaluated and analyzed. RESULTS One hundred and forty one papers and twenty two recent patents were included in this review. An increased trend in scientific contributions was observed in the development of adsorption materials for phosphate removal. Three kinds of promising adsorbents: layered double hydroxides, natural materials, and metal oxides were paid special attention including removal mechanism, performance as well as the relationship between adsorption performance and structure. Both the chemical composition and the morphology play a key role in the removal capacity and rate. CONCLUSION The findings of this review confirm the importance of phosphate removal, show the development trend of high-performance and low-cost adsorption materials for phosphate removal, and provide a helpful guide to design and fabricate high-efficiency adsorbents.
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Affiliation(s)
- Saeed Ahmed
- State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Centre for Hierarchical Catalysts, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing, 100029, China
| | - Muhammad Naeem Ashiq
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Dianqing Li
- State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Centre for Hierarchical Catalysts, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing, 100029, China
| | - Pinggui Tang
- State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Centre for Hierarchical Catalysts, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing, 100029, China
| | - Fabrice Leroux
- Universite Clermont Auvergne, Institute de Chimie de Clermont-Ferrand ICCF, UMR-CNRS 6296, F 63171 Aubiere, France
| | - Yongjun Feng
- State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Centre for Hierarchical Catalysts, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing, 100029, China
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18
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Singh R, Bhunia P, Dash RR. COD removal index - A mechanistic tool for predicting organics removal performance of vermifilters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 643:1652-1659. [PMID: 30054089 DOI: 10.1016/j.scitotenv.2018.07.272] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/18/2018] [Accepted: 07/19/2018] [Indexed: 06/08/2023]
Abstract
The present study was aimed at developing a mathematical COD removal index (CRI) based on the key variables of vermifiltration such as hydraulic retention time (HRT), organic concentration and earthworm density (EWD). In the maiden attempt of framing such an index, many experimental runs were conducted by varying the COD strength of the wastewater from 2.0-4.0 kg/m3, EWD and HLR were from 0 to 10,000 earthworms/m3 and 1.8-4.5 m3/m2·d, respectively. The sensitivity analysis of the developed CRI reveals that the EWD, bedding volume, concentration of organics and the flow applied to the vermifilter can immensely affect the model response. However, flow applied to the system is observed to be the most sensitive among other parameters incorporated in the model. In addition, from the sensitivity analysis, it was also revealed that the removal efficiencies were observed to increase with the increase in CRI values in the COD range of 0.2-6.0 kg/m3. In addition, the plot between the reported removals from literatures on vermifiltration of domestic wastewater and CRI values yielded an R2 value of 0.76. Such a high correlation suggests that the developed CRI index can be applied for other wastewaters also. The results of this study indicate that the developed index can successfully be applied in determining and predicting organics removal from vermifiltration of wastewaters.
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Affiliation(s)
- Rajneesh Singh
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India
| | - Puspendu Bhunia
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India.
| | - Rajesh R Dash
- School of Infrastructure, Indian Institute of Technology, Bhubaneswar, India
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19
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Singh R, Bhunia P, Dash RR. Understanding intricacies of clogging and its alleviation by introducing earthworms in soil biofilters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 633:145-156. [PMID: 29573681 DOI: 10.1016/j.scitotenv.2018.03.156] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/13/2018] [Accepted: 03/15/2018] [Indexed: 06/08/2023]
Abstract
With the scarcity of fresh water and rise in pollution load in the aquatic ecosystem over the globe, the domestic and industrial effluents need to be reused after suitable treatment. In an attempt to do so, soil biofilters have been identified as a treatment alternative that is suitable for application in developing countries. However, rapid development of clogging in the soil biofilters limits its applicability as an effective technology. This paper aims to understand the occurrence of clogging due to biofilms formation in and over the bedding of soil media. To address this, the organic loading rates (OLRs) were varied in the range of 2.25-11.25kgCOD/m3·day to create different degree of clogging. Earthworms were inoculated into the soil bedding at the earthworm densities (EWDs) of 0, 5000 and 10,000earthworms/m3 to study the effect of earthworms introduction on clogging. The degree of clogging was measured using clogging coefficient (CC), hydraulic conductivity and head loss. The study highlights the impact of earthworms on the removal performance and clogging of soil biofilter. For all earthworm densities, head loss and clogging coefficient increased and hydraulic conductivity decreased linearly with organic loading rate. Introduction of earthworms versus no earthworms resulted in lower head loss and clogging coefficient and higher hydraulic conductivity for all organic loading rates, while increasing EWD from 5000 to 10,000 had only marginal effects on all parameters. The study reveals that high organic loading rate activates higher number of microbial sites, in turn causing higher degree of clogging. However, the introduction of earthworms reduces the clogging rate significantly along with enhanced treatment performance. The outcome of this study indicates that incorporation of earthworms into the soil biofilter can reduce the degree of bio-clogging and might provide a highly sustainable, low cost and efficient treatment system for the developing countries.
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Affiliation(s)
- Rajneesh Singh
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India
| | - Puspendu Bhunia
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India..
| | - Rajesh R Dash
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha, India
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20
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Rout PR, Dash RR, Bhunia P, Rao S. Role of Bacillus cereus GS-5 strain on simultaneous nitrogen and phosphorous removal from domestic wastewater in an inventive single unit multi-layer packed bed bioreactor. BIORESOURCE TECHNOLOGY 2018; 262:251-260. [PMID: 29715628 DOI: 10.1016/j.biortech.2018.04.087] [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: 03/15/2018] [Revised: 04/20/2018] [Accepted: 04/21/2018] [Indexed: 06/08/2023]
Abstract
This work evaluates the performance efficiency of a newly developed single unit packed bed bioreactor for nutrient removal from domestic wastewater. The packing materials, including dolochar, and a mixture of waste organic solid substance, were immobilized with a simultaneous nitrifying, denitrifying and phosphate removing bacterial strain, Bacillus cereus GS-5 and packed in the bioreactor alternatively in multiple layers. The bioreactor was operated continuously for a period of 70 days using both synthetic and real domestic wastewater (NH4+-N 30-100 mg/L, NO3--N 10-100 mg/L, PO43--P 5-20 mg/L and COD 250-1000 mg/L). The innovative single unit bioreactor exhibited simultaneous removal of NH4+-N (87.1-93.1%), NO3--N (69.4-88.4%), PO43--P (84-100%), and even COD (69.8-92.1%), in a remarkable disparity to traditional distinct aerobic-anaerobic treatment systems. This work advocated for a promising and feasible application prospect of the developed single unit packed bed bioreactor in domestic wastewater treatment emphasizing on nutrient removal.
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Affiliation(s)
- Prangya Ranjan Rout
- Department of Biotechnology, MITS Gwalior, Madhya Pradesh 474005, India; School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha 751013, India.
| | - Rajesh Roshan Dash
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha 751013, India
| | - Puspendu Bhunia
- School of Infrastructure, Indian Institute of Technology Bhubaneswar, Odisha 751013, India
| | - Surampalli Rao
- Civil Engineering Department, University of Nebraska-Lincoln, NE, United States
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21
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Wang WH, Wang Y, Li Z, Wei CZ, Zhao JC, Sun LQ. Effect of a strengthened ecological floating bed on the purification of urban landscape water supplied with reclaimed water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 622-623:1630-1639. [PMID: 29054622 DOI: 10.1016/j.scitotenv.2017.10.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 09/19/2017] [Accepted: 10/05/2017] [Indexed: 06/07/2023]
Abstract
A floating bed (FB) system vegetated with calamus, iris, lythrum, and Hydrocotyle vulgaris, and a strengthened FB (SFB) system with zeolite and sponge iron as fillers were simultaneously applied to purify urban landscape water in different zones. The urban landscape water, an artificial lake of approximately 326m2, was supplied with reclaimed water during a six-month experiment. Results indicated that the concentrations of nitrogen (N) and phosphorus (P) in the SFB zone (SFBZ) were significantly lower than those in the control zone (CZ) and the FB zone (FBZ) after six months of operation. The average removal efficiencies (AREs) in the SFBZ, FBZ and CZ were 89.98%, 77.39% and 56.37%, respectively, for ammonia nitrogen (NH4+-N); 92.49%, 79.55% and 47.85%, respectively, for phosphate (PO43--P). Meanwhile, the average concentration of Chlorophyll a and the algae density in SFBZ during the experiment were 12.54μg/L and 1.31×104cells/mL, which were lower, obviously, than those in the FBZ and CZ. Moreover, the contribution rates analysis of nutrient removal exhibited that the plant absorption in the removal of N and P occupied 27.85% and 26.36%, whereas the filler adsorption occupied 7.93% and 11.93%, respectively, in the SFB. Thus, the water quality of the artificial lake was improved greatly by the SFB which hybridized fillers and FB together. Finally, it was found that the AREs of NH4+-N and PO43--P in the SFBZ could reach 73.93% and 84.56%, approximately 1.39 and 1.41 times that of the FBZ during the winter. Therefore, the application of an SFB can keep a stable water quality in urban landscape water and avoid the lower removal rate of an FB at low-temperature. In summary, the SFB could effectively improve the water quality of urban landscape water supplied with reclaimed water even in winter.
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Affiliation(s)
- Wen-Huai Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Yi Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
| | - Zhi Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Cun-Zhi Wei
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Jing-Chan Zhao
- College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, China
| | - Lu-Qin Sun
- Environmental Science Department, University of San Francisco, California, CA 94117, USA
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22
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Borges R, Prevot V, Forano C, Wypych F. Design and Kinetic Study of Sustainable Potential Slow-Release Fertilizer Obtained by Mechanochemical Activation of Clay Minerals and Potassium Monohydrogen Phosphate. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04378] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roger Borges
- Department
of Chemistry, Universidade Federal do Paraná, PO Box 19032, 81531-980 Curitiba - PR, Brazil
- Institut
de Chimie de Clermont-Ferrand, Université Clermont Auvergne, Université Blaise Pascal, BP 10448, F-63000 Clermont-Ferrand, France
- CNRS, UMR 6296, F-63178 Aubière, France
| | - Vanessa Prevot
- Institut
de Chimie de Clermont-Ferrand, Université Clermont Auvergne, Université Blaise Pascal, BP 10448, F-63000 Clermont-Ferrand, France
- CNRS, UMR 6296, F-63178 Aubière, France
| | - Claude Forano
- Institut
de Chimie de Clermont-Ferrand, Université Clermont Auvergne, Université Blaise Pascal, BP 10448, F-63000 Clermont-Ferrand, France
- CNRS, UMR 6296, F-63178 Aubière, France
| | - Fernando Wypych
- Department
of Chemistry, Universidade Federal do Paraná, PO Box 19032, 81531-980 Curitiba - PR, Brazil
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Wang Y, Yu Y, Li H, Shen C. Comparison study of phosphorus adsorption on different waste solids: Fly ash, red mud and ferric-alum water treatment residues. J Environ Sci (China) 2016; 50:79-86. [PMID: 28034434 DOI: 10.1016/j.jes.2016.04.025] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/31/2016] [Accepted: 04/05/2016] [Indexed: 06/06/2023]
Abstract
The adsorption of phosphorus (P) onto three industrial solid wastes (fly ash, red mud and ferric-alum water treatment residual (FAR)) and their modified materials was studied systematically via batch experiments. Compared with two natural adsorbents (zeolite and diatomite), three solid wastes possessed a higher adsorption capacity for P because of the higher Fe, Al and Ca contents. After modification (i.e., the fly ash and red mud modified by FeCl3 and FARs modified by HCl), the adsorption capacity increased, especially for the modified red mud, where more Fe bonded P was observed. The P adsorption kinetics can be satisfactorily fitted using the pseudo-second-order model. The Langmuir model can describe well the P adsorption on all of the samples in our study. pH and dissolved organic matter (DOM) are two important factors for P adsorption. Under neutral conditions, the maximum adsorption amount on the modified materials was observed. With the deviation from pH7, the adsorption amount decreased, which resulted from the change of P species in water and surface charges of the adsorbents. The DOM in water can promote P adsorption, which may be due to the promotion effects of humic-Fe(Al) complexes and the pH buffer function exceeds the depression of competitive adsorption.
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Affiliation(s)
- Ying Wang
- School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Yange Yu
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Haiyan Li
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Chanchan Shen
- School of Environment, Beijing Normal University, Beijing 100875, China
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24
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Rout PR, Dash RR, Bhunia P. Development of an integrated system for the treatment of rural domestic wastewater: emphasis on nutrient removal. RSC Adv 2016. [DOI: 10.1039/c6ra08519a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel, integrated treatment system consisting of a multi-stage bio-filter and a post positioned denitrifying bio-reactor was designed and developed in this study for the treatment of rural domestic wastewater emphasizing on nutrient removal.
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Affiliation(s)
- Prangya Ranjan Rout
- School of Infrastructure
- Indian Institute of Technology Bhubaneswar
- India 751 013
| | - Rajesh Roshan Dash
- School of Infrastructure
- Indian Institute of Technology Bhubaneswar
- India 751 013
| | - Puspendu Bhunia
- School of Infrastructure
- Indian Institute of Technology Bhubaneswar
- India 751 013
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