Chiang Mai Journal of Science

Print ISSN: 0125-2526 | eISSN : 2465-3845

1,647
Articles
Q3 0.80
Impact Factor
Q3 1.3
CiteScore
7 days
Avg. First Decision
Outline
Figures and Tables
ARTICLE METRICS
Views 905
Downloads 267

Feasible Use of Electrical Conductivity for Optimizing Polymer Dosage and Mixing Time Requirement in Sludge Conditioning

Tongchai Sriwiriyarat, Kreethaphon Siriphrom, Nut Kaewpanao, and Anucha Puansuchjar
* Author for corresponding; e-mail address: sriwiri@buu.ac.th
Volume: Vol.35 No.1 (JANUARY 2008)
Research Article
DOI:
Received: 17 September 2007, Revised: -, Accepted: 18 October 2007, Published: -

Citation: Sriwiriyarat T., Siriphrom K., Kaewpanao N. and Puansuchjar A., Feasible Use of Electrical Conductivity for Optimizing Polymer Dosage and Mixing Time Requirement in Sludge Conditioning, Chiang Mai Journal of Science, 2008; 35(1): 82-88.

Abstract

The feasible use of electrical conductivity was evaluated in this study for optimizing polymer dosage and mixing time required in the municipal biological wastewater treatment plant sludge conditioning process. The electrical conductivity could be adopted as a key indicator because it is a low cost device with acceptable accuracy and is available in any laboratory. The cationic polymer concentrations of 0, 2, 4, 6, 8, and 10 kg polymer/ton of dry sludge were applied on the 1% solids at different mixing time of 60 minutes. The centrate viscosity was used to determine the optimal dosage of polymer for the sake of comparison to the results obtained from the electrical conductivity. It was found that the electrical conductivity exhibited a similar trend to the kinematic viscosity and provided the same optimal polymer dosage of 4 kg polymer/ton of dry solids. The mixing time requirement for conditioning sludge with polymer monitored by the electrical conductivity at a 5 minute- interval was longer than 55 minutes at the mixing intensity of 120 rpm. The electrical conductivity profiles suggest that sufficient mixing time resulting in the homogenous mixture be provided, so that the optimal polymer dosage could be clearly identified.  

Keywords: Electrical Conductivity, Centrate, Viscosity, Polymer, Sludge Conditioning

Related Articles

Syntheses, Crystal Structures, and NBO Calculation of Two Co(II) Coordination Polymers Involving 4,4΄-bipyridine (bipy) and 1,4-bis(imidazol-1-ylmethyl)benzene
DOI: 10.12982/CMJS.2025.096.

Xiumei Li, Xuan Wei, Bo Liu and Minghui Sun

Vol.52 No.6 (November 2025)
Research Article View: 198 Download: 103
Evaluation of Rheological and Functional Properties of Kefiran Biopolymer Isolated From Kefir Grains
DOI: 10.12982/CMJS.2025.086.

Eda Ondul Koc and Mahmut Inal

Vol.52 No.6 (November 2025)
Research Article View: 411 Download: 104
Enhancing Wood Adhesive Strength of PVAc by Blending with Natural Rubber Latex
DOI: 10.12982/CMJS.2024.105.

Tasneem Jehleah and Abedeen Dasesamoh

Vol.51 No.6 (November 2024)
Research Article View: 686 Download: 538
Microscopy Investigation of Streblus asper Lour. Leaves-derived SiO2/C with Polypyrrole Nanocomposites as Sustainable Anode Materials for Lithium-ion Batteries
DOI: 10.12982/CMJS.2024.099.

Kittiched Khunpakdee, Thanapat Autthawong, Natthakan Ratsameetammajak and Thapanee Sarakonsri

Vol.51 No.6 (November 2024)
Research Article View: 847 Download: 369
Geopolymer Paving Blocks Made From Fly Ash and Bagasse Ash Under Different Curing Conditions
DOI: 10.12982/CMJS.2024.041.

Rattapon Somna, Prachoom Khamput and Kiatsuda Somna

Vol.51 No.3 (May 2024)
Research Article View: 1,693 Download: 625
Advancing Sustainable Solutions: Exploring United Atom Model for Efficient Molecular Dynamics Simulation of Poly-ethylene Vanillic (PEV) Polymer
DOI: 10.12982/CMJS.2024.013.

Mattanun Sangkhawasi, Tawun Remsungnen, Chonnikan Hanpaibool, Rungtiva P. Poo-arporn, Alisa S. Vangnai and Thanyada Rungrotmongkol

Vol.51 No.2 (March 2024)
Research Article View: 1,781 Download: 1,614
Extraction and Characterization of β-Glucan from Kombucha Bacterial Cellulose and Concentrated Kombucha: Evaluating their Bile Acid Binding Capacity
DOI: 10.12982/CMJS.2023.033.

Sonthirat Charoenrak, Mamoru Wakayama, Suporn Charumanee, Panee Sirisa-ard, Sittisin Bovonsombut, Suwalee Kiatkarun, Thararat Chitov and Sakunnee Bovonsombut

Vol.50 No.3 (May 2023)
Research Article View: 1,151 Download: 865
The Study of Ranong Metakaolin-Based Porous Geopolymers as Insulating Materials for Construction
DOI: 10.12982/CMJS.2022.015.

Pimpun Henpraserttae, Sitthisuntorn Supothina and Patthamaporn Timakul

Vol.49 No.1 (Special Issue I : Jan 2022)
Research Article View: 1,651 Download: 478
Investigation of the Initiating and Catalytic Behavior of Tri-n-butyltin(IV) n-Butoxide in Ring-Opening Polymerization of ε-Caprolactone and Transesterification of Poly(L-lactic acid)
DOI: 10.12982/CMJS.2022.003.

Winita Punyodom, Puttinan Meepowpan, Boontharika Thapsukhon, Manita Dumklang and Wanich Limwanich

Vol.49 No.1 (Special Issue I : Jan 2022)
Research Article View: 1,773 Download: 615
Strengthening Geopolymer with Selective Sizes of Concrete Block Waste
page: 1657 - 1678

Parinya Somrang, Anucha Wannagon, Pattarawan Choeycharoen, and Watcharee Sornlar

Vol.48 No.6 (November 2021)
Research Article View: 1,766 Download: 500
Kinetic and Mechanistic Studies of Bulk Copolymerization of L-lactide and Glycolide Initiated by Liquid Tin(II) n-Butoxide
page: 489 - 505

Tawan Chaiwon, Montira Sriyai, Puttinan Meepowpan, Robert Molloy, Kanarat Nalampang, Narin Kaabbuathong and Winita Punyodom*

Vol.48 No.2 (March 2021)
Research Article View: 990 Download: 754
Ring-Opening Polymerization of ε-Caprolactone Using Soluble Tin(II) n-Butoxide-L-Lactide Macroinitiators
page: 312 - 322

Manita Dumklang*, Wanich Limwanich, Sawarot Phetsuk, Puttinan Meepowpan and Winita Punyodom

Vol.48 No.2 (March 2021)
Research Article View: 1,080 Download: 664
Tin(II) n-Hexoxide as New Initiator for the Ring-Opening Polymerization of ε-Caprolactone: Isoconversional Kinetics Analysis by Non-Isothermal DSC
page: 276 - 291

Boontharika Thapsukhon*, Wanich Limwanich, Puttinan Meepowpan and Winita Punyodom

Vol.48 No.2 (March 2021)
Research Article View: 1,068 Download: 886
Effect of Different Crosslinking Agents on Properties of Dual Modified Starch Biodegradable Films Prepared by Crosslinked-Oxidized Method
page: 1216 - 1229

Yossathorn Tanetrungroj and Jutarat Prachayawarakorn*

Vol.47 No.6 (November 2020)
Research Article View: 992 Download: 1,833
Physical and Mechanical Properties of Diatomite/Metakaolin-based Geopolymer for Construction Materials
page: 786 - 795

Suwanan Thammarong, Narumon Lertcumfu, Pharatree Jaita, Nuttaporn Pimpha, Tawee Tunkasiri, Gobwute Rujijanagul and Pruchya Malasri

Vol.47 No.4 (Special Issue II : July 2020)
Research Article View: 1,055 Download: 562
Influence of Choice of Curing Method on the Dielectric, Thermal and Mechanical Properties of Geopolymer Mortar-Natural Rubber Latex (GM-NRL) Blends
page: 567 - 579

Saysunee Jumrat, Yutthapong Pianroj and Seppo Karrila

Vol.47 No.3 (May 2020)
Research Article View: 1,010 Download: 420
Innovation of Green Chemistry for Synthesizing Nanoporous and Microporous Aluminosilicate via Microemulsion Technique
page: 473 - 483

Parichat Iam-khong, Pailin Muchan, Nimit Sriprang and Manit Nithitanakul

Vol.47 No.3 (May 2020)
Research Article View: 1,313 Download: 711
Superior Properties and Structural Analysis of Geopolymer Synthesized from Red Clay
page: 1234 - 1248

Pattarawan Choeycharoen*, Watcharee Sornlar, Witaya Shongkittikul and Anucha Wannagon

Vol.46 No.6 (November 2019)
Research Article View: 1,255 Download: 454
Poly(L-lactide)-Degrading Enzyme from Laceyella sacchari LP175: Cloning, Sequencing, Expression, Characterization and Its Hydrolysis of Poly(L-lactide) Polymer
page: 417 - 430

Thanasak Lomthong, Marie Guicherd, Gianluca Cioci, Sophie Duquesne, Alain Marty, Saisamorn Lumyong and Vichien Kitpreechavanich

Vol.46 No.3 (May 2019)
Research Article View: 1,054 Download: 488
Synthesis and Characterization of Admicelled Natural Rubber with Poly(methyl methacrylate)-co-Poly((3-trimethoxysilyl) propyl methacrylate) and Evaluation of the Properties of its Vulcanizates
page: 387 - 407

Suparat Nooma and Rathanawan Magaraphan*

Vol.46 No.2 (March 2019)
Research Article View: 914 Download: 293
Preparation and Characterization of Core-shell Magnetite Nanoparticles-polycaprolactone, Core-shell Natural Rubber- polycaprolactone for Toughness Enhancement of Poly(Lactic Acid)
page: 337 - 352

Warangkhana Phromma and Rathanawan Magaraphan*

Vol.46 No.2 (March 2019)
Research Article View: 882 Download: 272
Electrical and Thermal Transport Properties of Dysprosium Barium Copper Oxide Ceramic
page: 2809 - 2816

Paitoon Boonsong, Pimpilai Wannasut, Suwapitcha Buntham, Ampika Rachakom, Chakrit Sriprachuabwong, Adisorn Tuantranont and Anucha Watcharapasorn

Vol.45 NO.7 (November 2018)
Research Article View: 1,152 Download: 466
Synthesis of Poly(rac-lactide) Using Tri-n-Butyltin(IV) n-Butoxide as Initiator: The Investigation on Stereochemistry and Polymerization Mechanism
page: 2069 - 2078

Wanich Limwanich, Puttinan Meepowpan, Nawee Kungwan and Winita Punyodom

Vol.45 No.5 (Special 2018)
Research Article View: 989 Download: 404
Imidazole-doped Poly(styrene sulfonic acid-co-vinyl imidazole)/Polyvinyl Alcohol Blends as Proton Conducting Membranes
page: 1111 - 1121

Chayanan Boonrawd, Supika Uthailerd, Thidarat Pandhumas, Chonnakarn Panawong, Sujittra Youngme and Surangkhana Martwiset

Vol.45 No.2 (March 2018)
Research Article View: 886 Download: 351
Synthesis of Cationic Polymer Coated Magnetite Nanoparticles Based on Poly(maleic anhydride-alt-1-octadecene)
page: 1487 - 1496

Ong-art Thanetnit and Supawan Tantayanon*

Vol.44 No.4 (October 2017)
Research Article View: 1,042 Download: 343
Physicochemical and Microbial Characteristics of Anaerobic Granule Nuclei Developed by Cationic Polymer Additions under Syntroph Specific Substrate
page: 102 - 114

Nasrul Hudayah, Benjaphon Suraraksa and Pawinee Chaiprasert*

Vol.44 No.1 (JANUARY 2017)
Research Article View: 892 Download: 513
Electropolymerization and Properties of Poly (3-anilinethiophene) Thin Film
page: 863 - 869

Saengrawee Sriwichai*[a,b], Paphawadee Netsuwan [c], Sukon Phanichphant [b] and Akira Baba [d]

Vol.43 No.4 (JULY 2016)
Research Article View: 905 Download: 462
Interfacial Transition Zone of Pervious Cement and Geopolymer Concrete Containing Crushed Clay Brick
page: 402 - 408

Vanchai Sata [a], Ampol Wongsa [a], Kiatsuda Somna*[b], and Prinya Chindaprasirt [a]

Vol.43 No.2 (SPECIAL ISSUE 1)
Research Article View: 904 Download: 336
Kinetics Studies of Non-Isothermal Melt Crystallization of Poly(ε-caprolactone) and Poly(L-lactide)
page: 329 - 338

Wanich Limwanich [a], Sawarot Phetsuk [b], Puttinan Meepowpan [b], Nawee Kungwan [b], Winita Punyodom*[b]

Vol.43 No.2 (SPECIAL ISSUE 1)
Research Article View: 985 Download: 323
Effect of Pectin Contents on Properties of Biodegradable Thermoplastic Mung Bean Starch/low-density Polyethylene Blends Using Injection Molding Technique
page: 215 - 225

Jutarat Prachayawarakorn*[a,b] and Luxana Hommanee [a]

Vol.43 No.1 (JANUARY 2016)
Research Article View: 950 Download: 292
Pluronic® P123/TPGS and Pluronic® F127/TPGS Mixed Micelles for the Entrapment of Itraconazole
page: 946 - 956

Thawanrat Mingkwan, Jiraphong Suksiriworapong and Doungdaw Chantasart

Vol.42 No.4 (OCTOBER 2015)
Research Article View: 988 Download: 312
Poly(oligoethylene Glycol Methacrylate): A Promising Electrolyte Polymer
page: 868 - 876

Imee A. Saladaga, Siranya Janthasit, Mark Daniel G. de Luna, Nurak Grisdanurak, Sukr

Vol.42 No.4 (OCTOBER 2015)
Research Article View: 788 Download: 328
Influence of Discontinuous PureSperm® and OptiPrepTM Gradient Centrifugations on Bovine Sperm Quality and the Sex Ratio of in vitro Produced Embryos
page: 637 - 649

Kakanang Buranaamnuay, Parisatcha Sangsuwan, Chinarat Changsangfa, Tassanee Faisaikarm

Vol.42 No.3 (JULY 2015)
Research Article View: 842 Download: 290
Emulsions stabilized by chitosan/lithium dodecyl sulfate complexes
page: 393 - 400

Thammasit Vongsetskul, Kewalin Phaenthong, Ratana Chanthateyanonth, Panya Sunintaboon and Pramuan T

Vol.42 No.2 (APRIL 2015)
Research Article View: 11,298 Download: 482
Plasma Assisted Immobilization of TiO2 nanoparticles onto PLA Surface to Promote the Antimicrobial Activity
page: 1361 - 1374

Chonlada Theerakarunwong*[a], Somruthai Tunma[b] and Dheerawan Boonyawan[c]

Vol.41 No.5/2 (OCTOBER 2014)
Research Article View: 879 Download: 259
Study of In-situ Hybrid Composites of Poly(ethylene terephthalate)/Liquid Crystalline Polymer Filled with Microwave-synthesized Zinc Oxide Powder
page: 1317 - 1331

Penwisa Pisitsak*, and Rathanawan Magaraphan

Vol.41 No.5/2 (OCTOBER 2014)
Research Article View: 857 Download: 264
Kinetic Studies of the Photopolymerisation of Acrylamide in Aqueous Solution: Effects of Bromoformas a Chain Transfer Agent
page: 1352 - 1360

Kamonchanok Thananukul[a], Juraiporn Porkaew [b], Patchara Punyamoonwongsa [a], Robert Molloy*[b,c]

Vol.41 No.5/2 (OCTOBER 2014)
Research Article View: 989 Download: 317
Synthesis and room temperature magnetic behavior of nickel oxide nanocrystallites
page: 99 - 108

Kwanruthai Wongsaprom1*and Santi Maensiri 2

Vol.40 No.1 (JANUARY 2013)
Research Article View: 903 Download: 275
Polymer-Peptide Conjugate Hydrogels; Towards Controlled Drug Delivery
page: 351 - 372

Arun A. Sohdi, Darren Campbell andPaul D. Topham*

Vol.39 No.3 (JULY 2012)
Research Article View: 818 Download: 343
Effect of Relative Humidity on MechanicalProperties of Blended Chitosan-Methylcellulose Film
page: 133 - 137

Pornchai Rachtanapun and Panchat Wongchaiya

Vol.39 No.1 (JANUARY 2012)
Short Communication View: 934 Download: 197
Preparation and Characterization of PET-PLA Copolyester from Waste PET and Lactic Acid (LA)
page: 619 - 624

Achanai Buasri, Nattawut Chaiyut, Tanit Jenjaka, Sasirada Weerasunthorn and Sureerat Juengrun

Vol.38 No.4 (OCTOBER 2011)
Research Article View: 856 Download: 340
Electrospinning of Light-emitting Fibers from a Tertiary Blend Solution of an Inert Polymer and Two Conjugated Polymers
page: 193 - 209

Sutheerat Changsarn [a,b], James D. Mendez [c], Christoph Weder*[c], Toemsak Srikhirin [d], and Pit

Vol.38 No.2 (APRIL 2011)
Research Article View: 931 Download: 266
Polymerizability of Lactones Calculated by Molecular Mechanics, Semiempirical and Density Functional Theory Methods
page: 55 - 63

Putarat Nimmanpipug, Ancalee Junkaew, Jitrayut Jitonnom and Vannjan Sanghiran Lee

Vol.34 No.1 (JANUARY 2007)
Research Article View: 931 Download: 564
Design and Preparation of AMPS-Based Hydrogels for Biomedical Use as Wound Dressings
page: 183 - 189

Kanarat Nalampang, Nantarat Suebsanit, Chinanat Witthayaprapakorn, and Robert Molloy

Vol.34 No.2 (MAY 2007)
Research Article View: 997 Download: 310
Synthesis of Poly(9,9-dialkylfluorene-2,7-vinylene) (PFV) via Gilch Polymerization
page: 301 - 308

Piched Anuragudom [a], Teerapol Wongchanapiboon [a], T. Randall Lee [b] and Sukon Phanichphant *[a]

Vol.33 No.3 (SEPTEMBER 2006)
Research Article View: 921 Download: 558
The Rheological Behavior of Kaolin Suspensions
page: 271 - 281

Apinon Nuntiya* and Sitthisak Prasanphan

Vol.33 No.3 (SEPTEMBER 2006)
Research Article View: 969 Download: 265
Scanning Probe Microscope Investigation of Electrical Characteristics and Surface Morphology of Side Chain Liquid Crystalline Copolymers
page: 543 - 548

Areefen R assamesard, T oemsak Srikhirin , T eerakiat K erdcharoen and T anak orn Osotchan*

Vol.32 No.3 (SEPTEMBER 2005)
Research Article View: 885 Download: 278
Dynamic 2D-FTIR Spectroscopic Studies of Poly(Vinylidine Fluoride/T rifluoroethylene/Chloro trifluoroethylene), P(VDF/T rFE/CTFE) T erpolymer
page: 515 - 519

Pakorn Opaprakasit [a]*, Atitsa Petchsuk [b], Paul C. Painter [c], and Sergei Malkov [c

Vol.32 No.3 (SEPTEMBER 2005)
Research Article View: 953 Download: 246
Novel Tin(II) Butoxides for Use as Initiators in the Ring-Opening Polymerisation of ε-Caprolactone
page: 136 - 148

Manita Dumklang, Nilobon Pattawong , Winita Punyodom, Puttinan Meepowpan, Robert Molloy, and Mark H

Vol.36 No.2 (MAY 2009)
Short Communication View: 968 Download: 333
Ceria Fibers Via Electrospinning Process: The Effect of Co-Solvent
page: 85 - 91

Kanchana Luepong, Piyawit Koombhongse, and Paisan Kongkachuichay

Vol.37 No.1 (JANUARY 2010)
Research Article View: 909 Download: 303
Mango Tree Bark as Bioindicator for Air Pollution Monitoring in Chiang Mai City
page: 183 - 188

Palee Subsri* and Wanaruk Saipunkaew

Vol.29 No.3 (DECEMBER 2002)
Research Article View: 992 Download: 199
Nanocrystalline Hydroxyapatite Powders by a Polymerized Complex Method
page: 243 - 251

Jutharatana Klinkaewnarong, and Santi Maensiri

Vol.37 No.2 (MAY 2010)
Research Article View: 903 Download: 271
Outline
Figures