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A novel method to harvest Chlorella sp. via low cost bioflocculant: Influence of temperature with kinetic and thermodynamic functions
•Low-cost bioflocculant based algal biomass harvesting.•Effect of different concentrations of bioflocculant on algal biomass.•Effect of temperature with optimized concentration on harvesting efficiency.•Kinetics and thermodynamic functions to support the experimental data. In this study, harvesting...
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Published in: | Bioresource technology 2017-02, Vol.225, p.84-89 |
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creator | Kothari, Richa Pathak, Vinayak V. Pandey, Arya Ahmad, Shamshad Srivastava, Chandni Tyagi, V.V. |
description | •Low-cost bioflocculant based algal biomass harvesting.•Effect of different concentrations of bioflocculant on algal biomass.•Effect of temperature with optimized concentration on harvesting efficiency.•Kinetics and thermodynamic functions to support the experimental data.
In this study, harvesting efficiency (HE) of bioflocculant (egg shell) was observed with variation in flocculent concentrations (0–100mgL−1), temperature (30°C, 35°C 40°C, 45°C and 50°C) and variable contact time (0–50min). It was found maximum (≈95.6%) with 100mgL−1 bioflocculant concentration whereas influence of temperature was also observed with optimized concentration of bioflocculant (100mgL−1) at 40°C (≈98.1%) and 50°C (≈99.3%), in 30min of contact time. Significant changes in algal cell structures were also analyzed after exposure to various temperatures with microscopy, SEM (Scanning electron microscopy) and EDS (Energy dispersive X-ray spectroscopy) images with and without bioflocculant. The experimental data was found to be a good fit with pseudo-second order kinetic model. The thermodynamic functions such as ΔG (Gibbs free energy), ΔH (enthalpy), ΔS (entropy) were also determined. The negative value of ΔG and positive value of ΔH and ΔS shows the spontaneous and endothermic nature of flocculation process. |
doi_str_mv | 10.1016/j.biortech.2016.11.050 |
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In this study, harvesting efficiency (HE) of bioflocculant (egg shell) was observed with variation in flocculent concentrations (0–100mgL−1), temperature (30°C, 35°C 40°C, 45°C and 50°C) and variable contact time (0–50min). It was found maximum (≈95.6%) with 100mgL−1 bioflocculant concentration whereas influence of temperature was also observed with optimized concentration of bioflocculant (100mgL−1) at 40°C (≈98.1%) and 50°C (≈99.3%), in 30min of contact time. Significant changes in algal cell structures were also analyzed after exposure to various temperatures with microscopy, SEM (Scanning electron microscopy) and EDS (Energy dispersive X-ray spectroscopy) images with and without bioflocculant. The experimental data was found to be a good fit with pseudo-second order kinetic model. The thermodynamic functions such as ΔG (Gibbs free energy), ΔH (enthalpy), ΔS (entropy) were also determined. The negative value of ΔG and positive value of ΔH and ΔS shows the spontaneous and endothermic nature of flocculation process.</description><identifier>ISSN: 0960-8524</identifier><identifier>EISSN: 1873-2976</identifier><identifier>DOI: 10.1016/j.biortech.2016.11.050</identifier><identifier>PMID: 27886633</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Bioflocculant ; Biomass harvesting ; Biotechnology - economics ; Biotechnology - methods ; Chlorella - chemistry ; Chlorella - cytology ; Chlorella - growth & development ; Costs and Cost Analysis ; Entropy ; Flocculation ; Kinetic models ; Kinetics ; Low-cost ; Microscopy, Electron, Scanning ; Spectrometry, X-Ray Emission ; Temperature ; Thermodynamic functions ; Thermodynamics</subject><ispartof>Bioresource technology, 2017-02, Vol.225, p.84-89</ispartof><rights>2016 Elsevier Ltd</rights><rights>Copyright © 2016 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c405t-63ca0a86d36ab24a7b4333c6d060b2a071344b8faedf68affc0211dda4aabf2d3</citedby><cites>FETCH-LOGICAL-c405t-63ca0a86d36ab24a7b4333c6d060b2a071344b8faedf68affc0211dda4aabf2d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,778,782,27907,27908</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27886633$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kothari, Richa</creatorcontrib><creatorcontrib>Pathak, Vinayak V.</creatorcontrib><creatorcontrib>Pandey, Arya</creatorcontrib><creatorcontrib>Ahmad, Shamshad</creatorcontrib><creatorcontrib>Srivastava, Chandni</creatorcontrib><creatorcontrib>Tyagi, V.V.</creatorcontrib><title>A novel method to harvest Chlorella sp. via low cost bioflocculant: Influence of temperature with kinetic and thermodynamic functions</title><title>Bioresource technology</title><addtitle>Bioresour Technol</addtitle><description>•Low-cost bioflocculant based algal biomass harvesting.•Effect of different concentrations of bioflocculant on algal biomass.•Effect of temperature with optimized concentration on harvesting efficiency.•Kinetics and thermodynamic functions to support the experimental data.
In this study, harvesting efficiency (HE) of bioflocculant (egg shell) was observed with variation in flocculent concentrations (0–100mgL−1), temperature (30°C, 35°C 40°C, 45°C and 50°C) and variable contact time (0–50min). It was found maximum (≈95.6%) with 100mgL−1 bioflocculant concentration whereas influence of temperature was also observed with optimized concentration of bioflocculant (100mgL−1) at 40°C (≈98.1%) and 50°C (≈99.3%), in 30min of contact time. Significant changes in algal cell structures were also analyzed after exposure to various temperatures with microscopy, SEM (Scanning electron microscopy) and EDS (Energy dispersive X-ray spectroscopy) images with and without bioflocculant. The experimental data was found to be a good fit with pseudo-second order kinetic model. The thermodynamic functions such as ΔG (Gibbs free energy), ΔH (enthalpy), ΔS (entropy) were also determined. The negative value of ΔG and positive value of ΔH and ΔS shows the spontaneous and endothermic nature of flocculation process.</description><subject>Bioflocculant</subject><subject>Biomass harvesting</subject><subject>Biotechnology - economics</subject><subject>Biotechnology - methods</subject><subject>Chlorella - chemistry</subject><subject>Chlorella - cytology</subject><subject>Chlorella - growth & development</subject><subject>Costs and Cost Analysis</subject><subject>Entropy</subject><subject>Flocculation</subject><subject>Kinetic models</subject><subject>Kinetics</subject><subject>Low-cost</subject><subject>Microscopy, Electron, Scanning</subject><subject>Spectrometry, X-Ray Emission</subject><subject>Temperature</subject><subject>Thermodynamic functions</subject><subject>Thermodynamics</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqFUcFu1DAQtRCILoVfqHzkktSOs07KiWoFtFIlLnC2JvZY8eLYi-1s1Q_gv_FqW66cRjPzZp7ee4RccdZyxuX1vp1cTAX13Ha1bzlv2Za9Ihs-DqLpbgb5mmzYjWTNuO36C_Iu5z1jTPChe0suumEcpRRiQ_7c0hCP6OmCZY6GlkhnSEfMhe5mHxN6DzQfWnp0QH18pDrWVeW2Pmq9egjlE70P1q8YNNJoacHlgAnKmpA-ujLTXy5gcZpCqO9nTEs0TwGWOrFr0MXFkN-TNxZ8xg_P9ZL8_Prlx-6uefj-7X53-9Donm1LI4UGBqM0QsLU9TBMvRBCS8MkmzpgAxd9P40W0Fg5grWadZwbAz3AZDsjLsnH899Dir_XKlItLuuTxoBxzYqPfc8EY6OsUHmG6hRzTmjVIbkF0pPiTJ0iUHv1EoE6RaA4VzWCenj1zLFOC5p_Zy-eV8DnMwCr0qPDpLJ2J_eMS6iLMtH9j-MvJy2erw</recordid><startdate>20170201</startdate><enddate>20170201</enddate><creator>Kothari, Richa</creator><creator>Pathak, Vinayak V.</creator><creator>Pandey, Arya</creator><creator>Ahmad, Shamshad</creator><creator>Srivastava, Chandni</creator><creator>Tyagi, V.V.</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20170201</creationdate><title>A novel method to harvest Chlorella sp. via low cost bioflocculant: Influence of temperature with kinetic and thermodynamic functions</title><author>Kothari, Richa ; Pathak, Vinayak V. ; Pandey, Arya ; Ahmad, Shamshad ; Srivastava, Chandni ; Tyagi, V.V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c405t-63ca0a86d36ab24a7b4333c6d060b2a071344b8faedf68affc0211dda4aabf2d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Bioflocculant</topic><topic>Biomass harvesting</topic><topic>Biotechnology - economics</topic><topic>Biotechnology - methods</topic><topic>Chlorella - chemistry</topic><topic>Chlorella - cytology</topic><topic>Chlorella - growth & development</topic><topic>Costs and Cost Analysis</topic><topic>Entropy</topic><topic>Flocculation</topic><topic>Kinetic models</topic><topic>Kinetics</topic><topic>Low-cost</topic><topic>Microscopy, Electron, Scanning</topic><topic>Spectrometry, X-Ray Emission</topic><topic>Temperature</topic><topic>Thermodynamic functions</topic><topic>Thermodynamics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kothari, Richa</creatorcontrib><creatorcontrib>Pathak, Vinayak V.</creatorcontrib><creatorcontrib>Pandey, Arya</creatorcontrib><creatorcontrib>Ahmad, Shamshad</creatorcontrib><creatorcontrib>Srivastava, Chandni</creatorcontrib><creatorcontrib>Tyagi, V.V.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Bioresource technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kothari, Richa</au><au>Pathak, Vinayak V.</au><au>Pandey, Arya</au><au>Ahmad, Shamshad</au><au>Srivastava, Chandni</au><au>Tyagi, V.V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A novel method to harvest Chlorella sp. via low cost bioflocculant: Influence of temperature with kinetic and thermodynamic functions</atitle><jtitle>Bioresource technology</jtitle><addtitle>Bioresour Technol</addtitle><date>2017-02-01</date><risdate>2017</risdate><volume>225</volume><spage>84</spage><epage>89</epage><pages>84-89</pages><issn>0960-8524</issn><eissn>1873-2976</eissn><abstract>•Low-cost bioflocculant based algal biomass harvesting.•Effect of different concentrations of bioflocculant on algal biomass.•Effect of temperature with optimized concentration on harvesting efficiency.•Kinetics and thermodynamic functions to support the experimental data.
In this study, harvesting efficiency (HE) of bioflocculant (egg shell) was observed with variation in flocculent concentrations (0–100mgL−1), temperature (30°C, 35°C 40°C, 45°C and 50°C) and variable contact time (0–50min). It was found maximum (≈95.6%) with 100mgL−1 bioflocculant concentration whereas influence of temperature was also observed with optimized concentration of bioflocculant (100mgL−1) at 40°C (≈98.1%) and 50°C (≈99.3%), in 30min of contact time. Significant changes in algal cell structures were also analyzed after exposure to various temperatures with microscopy, SEM (Scanning electron microscopy) and EDS (Energy dispersive X-ray spectroscopy) images with and without bioflocculant. The experimental data was found to be a good fit with pseudo-second order kinetic model. The thermodynamic functions such as ΔG (Gibbs free energy), ΔH (enthalpy), ΔS (entropy) were also determined. The negative value of ΔG and positive value of ΔH and ΔS shows the spontaneous and endothermic nature of flocculation process.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>27886633</pmid><doi>10.1016/j.biortech.2016.11.050</doi><tpages>6</tpages></addata></record> |
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subjects | Bioflocculant Biomass harvesting Biotechnology - economics Biotechnology - methods Chlorella - chemistry Chlorella - cytology Chlorella - growth & development Costs and Cost Analysis Entropy Flocculation Kinetic models Kinetics Low-cost Microscopy, Electron, Scanning Spectrometry, X-Ray Emission Temperature Thermodynamic functions Thermodynamics |
title | A novel method to harvest Chlorella sp. via low cost bioflocculant: Influence of temperature with kinetic and thermodynamic functions |
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