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Timothy G. Townsend

Timothy G. Townsend

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Engineering and Technology 68 1253 1186 408 365 284 14165
Environmental Sciences 70 1706 1624 716 660 326 15714

Timothy G. Townsend publications per year

The chart shows the history of publications by Timothy G. Townsend between 1995 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Timothy G. Townsend published across 31 years, from 1995 to 2025, averaging 12.3 papers a year. Output peaked at 41 publications in 2023. 27 of the 382 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1995 to 2025. Vertical axis: number of publications, 0 to 41. Peak 41 publications in 2023. 1995: 1 publication 1996: 1 publication 1997: 1 publication 1998: 3 publications 1999: 5 publications 2000: 4 publications 2001: 4 publications 2002: 8 publications 2003: 9 publications 2004: 8 publications 2005: 9 publications 2006: 26 publications 2007: 18 publications 2008: 9 publications 2009: 5 publications 2010: 13 publications 2011: 11 publications 2012: 10 publications 2013: 10 publications 2014: 15 publications 2015: 32 publications 2016: 16 publications 2017: 6 publications 2018: 22 publications 2019: 24 publications 2020: 15 publications 2021: 17 publications 2022: 12 publications 2023: 41 publications 2024: 14 publications 2025: 13 publications
1995 2025

382 publications in total across all disciplines

View publications per year as a table
Timothy G. Townsend: publications per year, 1995 to 2025
Year Publications
1995 1
1996 1
1997 1
1998 3
1999 5
2000 4
2001 4
2002 8
2003 9
2004 8
2005 9
2006 26
2007 18
2008 9
2009 5
2010 13
2011 11
2012 10
2013 10
2014 15
2015 32
2016 16
2017 6
2018 22
2019 24
2020 15
2021 17
2022 12
2023 41
2024 14
2025 13
Total 382
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Timothy G. Townsend publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Timothy G. Townsend sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 78 bars. Horizontal axis: publications, 38–47 to 804+. Vertical axis: number of scientists, 0 to 457. Most scientists, 457, have 148–157 publications. The last bar groups every scientist with 804 publications or more. The highlighted bar, 278–287 publications, is where this scientist sits. 38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38–47 publications 804+

This scientist: 284 publications — 73rd percentile

73% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

View publications distribution as a table
Number of Engineering and Technology scientists by publication count, Research.com 2026 ranking edition. Based on 9,796 ranked scientists.
Publications Scientists This scientist
38–47 20
48–57 35
58–67 96
68–77 135
78–87 190
88–97 259
98–107 283
108–117 369
118–127 341
128–137 386
138–147 372
148–157 457
158–167 415
168–177 407
178–187 421
188–197 378
198–207 403
208–217 317
218–227 346
228–237 321
238–247 260
248–257 280
258–267 240
268–277 214
278–287 242 284
288–297 203
298–307 166
308–317 154
318–327 175
328–337 159
338–347 99
348–357 131
358–367 106
368–377 118
378–387 97
388–397 108
398–407 82
408–417 71
418–427 64
428–437 55
438–447 54
448–457 60
458–467 47
468–477 40
478–487 30
488–497 29
498–507 38
508–517 40
518–527 32
528–537 23
538–547 28
548–557 23
558–567 19
568–577 16
578–587 17
588–597 18
598–607 22
608–617 15
618–627 9
628–637 11
638–647 21
648–657 12
658–667 9
668–677 11
678–687 9
688–697 6
698–707 14
708–717 7
718–727 8
728–737 10
738–747 9
748–757 5
758–767 5
768–777 11
778–787 7
788–797 2
798–803 4
804+ 100
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Timothy G. Townsend D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Timothy G. Townsend sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 78 bars. Horizontal axis: D-Index, 30 to 107+. Vertical axis: number of scientists, 0 to 426. Most scientists, 426, have 42 D-Index. The last bar groups every scientist with 107 D-Index or more. The highlighted bar, 68 D-Index, is where this scientist sits. 30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 68 D-Index — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

View D-Index distribution as a table
Number of Engineering and Technology scientists by D-index, Research.com 2026 ranking edition. Based on 9,796 ranked scientists.
D-Index Scientists This scientist
30 59
31 114
32 129
33 189
34 200
35 262
36 311
37 312
38 350
39 385
40 348
41 362
42 426
43 380
44 310
45 341
46 301
47 306
48 271
49 246
50 210
51 253
52 213
53 221
54 195
55 186
56 170
57 167
58 166
59 144
60 152
61 141
62 138
63 131
64 118
65 114
66 119
67 95
68 87 68
69 77
70 89
71 69
72 54
73 46
74 55
75 54
76 49
77 53
78 46
79 28
80 39
81 36
82 24
83 26
84 36
85 18
86 25
87 19
88 26
89 27
90 23
91 15
92 12
93 9
94 15
95 10
96 13
97 13
98 9
99 7
100 7
101 8
102 7
103 7
104 9
105 6
106 9
107+ 99
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Overview

Timothy G. Townsend is affiliated with the University of Florida in the United States. Their research spans several interconnected fields, primarily focusing on environmental science and engineering.

The main fields of study for Townsend include:

  • Environmental Science
  • Engineering

Within these areas, their work further concentrates on subfields such as:

  • Industrial and Manufacturing Engineering
  • Health, Toxicology and Mutagenesis
  • Environmental Chemistry
  • Building and Construction
  • Civil and Structural Engineering

The scientist's research topics cover a broad range of environmental and waste management concerns. These topics include:

  • Per- and polyfluoroalkyl substances research
  • Toxic Organic Pollutants Impact
  • Recycling and Waste Management Techniques
  • Recycling and utilization of industrial and municipal waste in materials production
  • Municipal Solid Waste Management
  • Atmospheric chemistry and aerosols
  • Recycled Aggregate Concrete Performance

Townsend has significantly contributed to scholarly articles, with notable papers such as:

  • Opportunities and challenges associated with using municipal waste incineration ash as a raw ingredient in cement production - a review, 2020, Resources Conservation and Recycling
  • A review of ground waste glass as a supplementary cementitious material: A focus on alkali-silica reaction, 2020, Journal of Cleaner Production
  • Toward Comprehensive Per- and Polyfluoroalkyl Substances Annotation Using FluoroMatch Software and Intelligent High-Resolution Tandem Mass Spectrometry Acquisition, 2020, Analytical Chemistry
  • Concentrating Per- and Polyfluoroalkyl Substances (PFAS) in Municipal Solid Waste Landfill Leachate Using Foam Separation, 2020, Environmental Science & Technology
  • From Waste Collection Vehicles to Landfills: Indication of Per- and Polyfluoroalkyl Substance (PFAS) Transformation, 2020, Environmental Science & Technology Letters

The frequent publication venues for their work include:

  • Resources Conservation and Recycling
  • Waste Management
  • Chemosphere
  • SSRN Electronic Journal
  • The Science of The Total Environment

Townsend has collaborated extensively with several coauthors, including:

  • John A. Bowden
  • Malak Anshassi
  • Helena M. Solo-Gabriele
  • Yalan Liu
  • Steven J. Laux

The scientist has also contributed to book publications, including a chapter titled "Construction and Demolition Debris" published in 2023 under the book "Waste management principles and practice."

Best Publications

  • Landfill bioreactor design and operation

    Debra R. Reinhart;Timothy G. Townsend

  • A review on the growing concern and potential management strategies of waste lithium-ion batteries

    Kevin M. Winslow;Steven J. Laux;Timothy G. Townsend

  • A review of waste products utilized as supplements to Portland cement in concrete

    Jerry M. Paris;Justin G. Roessler;Christopher C. Ferraro;Harvey D. DeFord

  • The bioreactor landfill: its status and future.

    Debra R. Reinhart;Philip T. McCreanor;Timothy Townsend

  • Leaching of lead from computer printed wire boards and cathode ray tubes by municipal solid waste landfill leachates.

    Yong-Chul Jang;Timothy G. Townsend

  • The Fate of Nitrogen in Bioreactor Landfills

    N. D. Berge;D. R. Reinhart;T. G. Townsend

  • Characterization of Lead Leachability from Cathode Ray Tubes Using the Toxicity Characteristic Leaching Procedure

    Stephen E. Musson;Yong-Chul Jang;Timothy G. Townsend;Il-Hyun Chung

  • Equilibrium and intra-particle diffusion of stabilized landfill leachate onto micro- and meso-porous activated carbon

    Shrawan K. Singh;Timothy G. Townsend;David Mazyck;Treavor H. Boyer

  • Estimation of regional building-related C&D debris generation and composition: Case study for Florida, US

    Kimberly Cochran;Timothy G. Townsend;Debra R. Reinhart;Howell Heck

  • Estimates of solid waste disposal rates and reduction targets for landfill gas emissions

    Jon T. Powell;Timothy G. Townsend;Julie B. Zimmerman

  • Estimating construction and demolition debris generation using a materials flow analysis approach

    Kimberly Cochran;Timothy G. Townsend

  • A comparison of landfill leachates based on waste composition

    Chris M. Moody;Timothy G. Townsend

  • ACCELERATION OF LANDFILL STABILIZATION USING LEACHATE RECYCLE

    T. G. Townsend;W. L. Miller;Hyung-Jib Lee;J. F. K. Earle

  • Leaching of CCA-treated wood: implications for waste disposal.

    Timothy Townsend;Thabet Tolaymat;Helena Solo-Gabriele;Brajesh Dubey

  • In situ ammonia removal in bioreactor landfill leachate.

    Nicole D. Berge;Debra R. Reinhart;John Dietz;Tim Townsend

  • Pharmaceutical compound content of municipal solid waste.

    Stephen E. Musson;Timothy G. Townsend

  • Review of state of the art methods for measuring water in landfills.

    Paul T. Imhoff;Debra R. Reinhart;Marja Englund;Roger Guérin

  • Impact of electronic waste disposal on lead concentrations in landfill leachate.

    Erik Spalvins;Brajesh Dubey;Timothy Townsend

  • Reduced sulfur compounds in gas from construction and demolition debris landfills

    Sue Lee;Qiyong Xu;Matthew Booth;Timothy G. Townsend

  • Sustainable Practices for Landfill Design and Operation

    Timothy G. Townsend;Jon. Powell;Pradeep. Jain;Qiyong. Xu

Frequent Co-Authors

Helena M. Solo-Gabriele
Helena M. Solo-Gabriele University of Miami
Debra R. Reinhart
Debra R. Reinhart University of Central Florida
Brajesh Dubey
Brajesh Dubey Indian Institute of Technology Kharagpur
Gabriel Bitton
Gabriel Bitton University of Florida
Lena Q. Ma
Lena Q. Ma Zhejiang University
Chang-Yu Wu
Chang-Yu Wu University of Florida
Yong Cai
Yong Cai Florida International University
Treavor H. Boyer
Treavor H. Boyer Arizona State University
William J. Weber
William J. Weber University of Tennessee at Knoxville
Jorge de Brito
Jorge de Brito Instituto Superior Técnico

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