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Klaus Dölle

Publications (60)

Laboratory Production of Alcohol from Apple Cider

Klaus Dölle, Lingkun Li & Botao Zhao · Asian Journal of Applied Chemistry Research · 2026

Apple cider (AC) is inexpensive, widely available, and does not compete directly with the food supply. It is also rich in fermentable sugars, making it an attractive feedstock for second-generation bioethanol. This study examined how aeration affects ethanol yield when fresh-pres...

Open access Research Article 10.9734/ajacr/2026/v17i4429

Laboratory Production of Biogas from Apple Pomace

Klaus Dölle, Lingkun Li & Botao Zhao · Journal of Energy Research and Reviews · 2026

Apple processing generates substantial quantities of pomace waste, comprising approximately 25–30% of the processed fruit dry mass. This inexpensive, non-food-competing residue retains a substantial fermentable carbohydrate content, making it an attractive feedstock for biogas pr...

Open access Research Article 10.9734/jenrr/2026/v18i10546

Hemp as Bio Fiber Material for Board Paper Applications: Laboratory Evaluation of Handsheets

Klaus Dölle · Journal of Materials Science Research and Reviews · 2026

Hemp (Cannabis sativa L.) is one of the oldest fibre crops used in papermaking, predating wood pulp by centuries, and its renewed legal status under the 2014 and 2018 U.S. Farm Bills has revived interest in it as a sustainable papermaking fibre. This study evaluates Hemp fibre as...

Open access Research Article 10.9734/jmsrr/2026/v9i4520

Recycled Jeans/Denim Cotton Fibre as a Bio-based Material for Paperboard Handsheets: Laboratory Evaluation

Klaus Dölle · Journal of Materials Science Research and Reviews · 2026

Fabric fibres have been used in paper production for more than 2,000 years. With industrialisation, wood-based fibres largely replaced textile fibres in paper products and packaging grades. Environmental concerns about plastic bags have renewed interest in paper-based and bio-bas...

Open access Research Article 10.9734/jmsrr/2026/v9i3498

Jeans as Bio Fiber Material for Paper Applications – Fiber Processing and Property Evaluation

Klaus Dölle · Journal of Materials Science Research and Reviews · 2026

At present time paper industry sector faces increasing production costs due to increasing energy costs, implementation of stringent environmental laws, sustainable consumer demands, globalization and high competitiveness and pressure on profit margins. This laboratory research pr...

Open access Research Article 10.9734/jmsrr/2026/v9i2485

In-Situ Precipitated Calcium Carbonate in the Presence of Wood Flour and High Refined Old Corrugated Containerboard: A Handsheet Study

Klaus Dölle · Advances in Research · 2025

The paper and board industry strives to become more environmentally friendly by utilizing new eco-friendly raw materials that can improve production processes at the same time. One solution for the board producing paper product segment is the utilization of nano fibrillated fiber...

Open access Research Article 10.9734/air/2025/v26i31321

Graphene History, Technical Applications and Production: A Brief Review

Klaus Dölle, Lauren Purvis, Mingyu Cai, Chengyu Jin & Puxi Qiu · Advances in Research · 2025

The review paper gives a brief overview of the historical use of carbon materials like graphite and charcoal and graphene and its production. It reviews the application of graphene for industrial application such as energy storage, electronics, biomedical, and environmental field...

Open access Research Article 10.9734/air/2025/v26i11255

Application of Recycled Plastic Media to Enhance Processes of a Waste Water Treatment Plant

Klaus Dölle · Journal of Materials Science Research and Reviews · 2024

Increased environmental awareness and treating waste water streams from municipalities, agricultural and industrial producers in an environmentally sound way makes it necessary to look at processes inspired by nature. The presented research focus performed at the Clean water Educ...

Open access Research Article 10.9734/jmsrr/2024/v7i4373

Application of Recycled Plastic Specimens to Enhance Waste Water Treatment Plant Operation for Subterranean Flow Constructed Wetlands

Klaus Dölle · Journal of Materials Science Research and Reviews · 2024

This study investigates the application of recycled plastic material in Subterranean Flow Constructed Wetlands, which are used for the treatment of pre clarified wastewater in an environmentally sound way inspired by natural biological processes. The focus of the presented resear...

Open access Research Article 10.9734/jmsrr/2024/v7i4365

Bio Based Coatings for Packaging Paper Applications: A Brief Technology Review

Klaus Dölle, Dristle Sean, Fett Eric, Krauss Colby, McCarthy Brody, Purvis Lauren, Schoen Johnny & Wojcikovski Ian · Journal of Materials Science Research and Reviews · 2024

One of the oldest packaging materials is fiber cloth beside ceramic containers prior to the invention of paper. Hemp and cotton-based textiles were used to bag flour and other perishable products. Paper was first used as a writing material, because it was too valuable to be used...

Open access Research Article 10.9734/jmsrr/2024/v7i4350

Sustainable Greeting Card – paper Products Produced on a Laboratory Paper Machine

Klaus Dölle, Helga Zoller-Croll, David Blazevic, Felix Hörl, Anna Lexa, Fabian Noss, Shyam Prasad, Gesa Richter, Erik Schmeckebier, Jack Slavinskas & Matthias Weiß · Journal of Engineering Research and Reports · 2024

Paper products have been used for thousands of years for art and communication purposes. The presented project describes the development of a unique greeting card art paper product, comprised of a card stock with a basis weight of 150 g/m2 having a purple color tone and inlay pap...

Open access Research Article 10.9734/jerr/2024/v26i61174

Subsurface Bioreactors as a Possible Addition to Enhance WW Treatment Plant Operation: A Brief Review

Klaus Dölle · Journal of Engineering Research and Reports · 2023

Prior to the establishment of the United Sates Environmental Protection Agency and the Clean Water Act signed into law in 1972, water treatment was done on a minimal level or was not present at all. Since then, scientists strive to improve and advance new and existing water treat...

Open access Research Article 10.9734/jerr/2023/v25i101014

Solids Reduction Process for Agricultural Effluent – A Laboratory Feasibility Study

Klaus Dölle & Philip Röhlen · Asian Journal of Advances in Agricultural Research · 2023

Process steps of flocculation, filtration and centrifugation are investigated to better utilizing existing storage capacity of agriculturally based effluents and at the same time minimize the environmental impact of agricultural operations. As flocculant Ca(OH)2 as a 20% solution...

Open access Research Article 10.9734/ajaar/2023/v23i3470

Treatment of Effluent with an Anaerobic Aerobic Effluent Treatment System

Klaus Dölle, Simon Lex & Nathaniel Button · Journal of Engineering Research and Reports · 2023

Today energy and clean water is a requirement in all societies worldwide to run productive processes. This affects the natural environment negatively and requires establishing more environmentally sustainable processes to decrease dependency and preserve the natural environment....

Open access Research Article 10.9734/jerr/2023/v25i7948

Determination of the Feasibility of a Renewed Approach to the Mechanical Cleaning Stage in Wastewater Treatment Plant: A Laboratory Study

Klaus Dölle & Philip Röhlen · Asian Journal of Advanced Research and Reports · 2023

Growing population and industrial complexes require municipalities to initiate costly upgrades of their wastewater treatment facilities in order to protect the environment and nearby water bodies. This research project explores if a process combination of centrifugation, floccula...

Open access Research Article 10.9734/ajarr/2023/v17i9525

Characterization of Recycled Fiber Material Made from Liquid Containerboard (LCB) and/or Old Corrugated Containers (OCC) – Evaluation of its Use by a Handsheet Study

Klaus Dölle, Nicole Byrnes, Sean Dristle, Tyler Fernandez, Mumin Hussein, Colby Krauss, Brody McCarthy, Paul Sausville, Johnny Schoen, Jack Slavinskas, Evan Wilson & Ian Wojcikowski · Journal of Materials Science Research and Reviews · 2023

Packaging materials for packaging liquid goods may contain over 75% virgin bleached fiber material that can be used to offset and or upgrade existing board products. This laboratory handsheet study investigated the use of recycled old corrugated container and liquid container boa...

Open access Research Article

Enhancement of a Decentralized Wastewater Treatment System by Applying a Bio-tower - A Project for Improving our Environmental Footprint

Klaus Dölle · Journal of Engineering Research and Reports · 2023

To investigate if decentralized wastewater treatment systems impact on the environment performance can be improved, a Field Bio-tower Tank Septic system was designed, installed on an existing 1,500-gal (5678 l) decentralized wastewater treatment system. The system was started up...

Open access Research Article 10.9734/jerr/2023/v25i4900

A Study on Laboratory Type Paper Machine Using Nano Fibrillated Cellulose from Recycled Old Corrugated Containerboard as Bio Additive in Board Production

Klaus Dölle, Jacob Darius, Rodrigo Castillo Medina, Owen Henkler & Jonathan Day · Journal of Engineering Research and Reports · 2023

Raw material, energy, water, and additive cost are challenges for today’s board manufacturing and new sustainable solutions are needed to produce paper products with an favorable environmental footprint. A laboratory Fourdrinier paper machine study manufactured a board product wi...

Open access Research Article 10.9734/jerr/2023/v24i5815

Upgrading of Old Corrugated Container Board with Aseptic Packaging Container for Paper Board Applications - A Laboratory Handsheet Study

Klaus Dölle, Nicole Byrnes, Sean Dristle, Tyler Fernandez, Mumin Hussein, Colby Krauss, Brody McCarthy, Paul Sausville, Johnny Schoen, Jack Slavinskas, Evan Wilson & Ian Wojcikowski · Journal of Materials Science Research and Reviews · 2022

In the recent past packaging material is on high demand. The use of environmentally friendly packaging materials requires that more recycled material is utilized in the manufacturing chain. Fiber material from liquid container board packaging which may contain over 75% virgin ble...

Open access Research Article

Production of Biogas from Anaerobic Co-digestion of Biosolids from Wastewater Treatment

Klaus Dölle & Malina Fritz · Journal of Energy Research and Reviews · 2022

With a growing global population and the constant striving for prosperity, comes a growing demand for energy. Biogas and its upgrading to biomethane are prosperous and sustainable energy sources that even allow the use of the natural gas infrastructure. Biogas production using di...

Open access Research Article 10.9734/jenrr/2022/v12i4249

Recycling of Aseptic Packaging Container for Paper Board Applications - A Laboratory Study

Klaus Dölle, Kavin Niranjan Chinnathambi Jeeva & José Iribarne · Journal of Materials Science Research and Reviews · 2022

High board and packaging material demands due to increased internet sales require the board and packaging manufacturing industry to increase production capabilities. Legislature actions require the utilization of environmentally friendly packaging materials as well as upgrade exi...

Open access Research Article

A Global Look at the Market Potential of Liquid Container Board and Its Ability to Reduce Plastic Waste – A Brief Review

Klaus Dölle, Nicole Byrnes, Sean Dristle, Tyler Fernandez, Mumin Hussein, Colby Krauss, Brody McCarthy, Paul Sausville, Johnny Schoen, Jack Slavinskas, Evan Wilson & Ian Wojcikowski · Journal of Engineering Research and Reports · 2022

The use of aseptic packaging creates many opportunities around the world to replace plastic based packaging of liquid and food-based containers in the near future. This will lead to a cleaner environment, less pollution within the air and the sea, and will help stimulate growth w...

Open access Research Article 10.9734/jerr/2022/v23i12780

Application and Testing of a Laboratory Biotower Septic Tank System for Effluent Treatment - A Laboratory Study

Klaus Dölle & Simon Lex · Asian Journal of Advanced Research and Reports · 2022

A laboratory biotower septic tank system was designed, installed, started up with unfiltered wastewater during a 9-day start-up phase, and operated at a hydraulic retention time of 5-, 15-, and 20 days with filtered waste water and 5-, 10-, and 15 days for liquid cow manure. The...

Open access Research Article 10.9734/ajarr/2022/v16i930494

Application of a Sludge Blanket Reactor for Effluent Treatment: A Laboratory Study

Klaus Dölle & Simon Lex · Journal of Energy Research and Reviews · 2022

Energy is required in all societies worldwide. This led to a dependency of fossil fuel. During uncertain times fossil fuel supply become highly politically and used as an influencing source. This requires establishing a more environmentally friendly processes to decrease dependen...

Open access Research Article 10.9734/jenrr/2022/v11i430284

Biogas Production Potential from Anaerobic Co-digestion of Grape Pomace

Klaus Dölle, Nicole Weizmann & Jydon R. Lang · Journal of Energy Research and Reviews · 2022

Grape cultivation and wine production has been in practice since 7000 BC in ancient China. Today, top wine producing countries are France, Italy, and Spain, including the United States. New York State is the third largest wine producing state in the US, with over 28 million gallo...

Open access Research Article 10.9734/jenrr/2022/v11i230273

Paper Bags or Plastic Bags? – A Brief Review

Klaus Dölle, Serena L. Brandt, Rodrigo Medina Castillo, William S. Contento, Jacob A. Darius, Jonathan M. Day, Sean M. Jr. Ferry, Owen S. Henkler, Emily E. Hicks, Kevin D. Holmes, Kelly J. O’Keefe, Joseph P. Payette & Edith L. Taylor · Journal of Engineering Research and Reports · 2022

Plastics are one of the most widely and abundant substances in today's society. Worldwide the usage of low-density polyethylene bags create pollution on land and in the oceans, especially when they break down in macro and micro plastics. On all continents, governments try to esta...

Open access Research Article 10.9734/jerr/2022/v22i517539

The Possibility of Biogas Production from Anaerobic Co-digestion of Hemp and Manure– A perspective in Germany

Klaus Dölle & David E. Kurzmann · Journal of Energy Research and Reviews · 2022

Replacement of fossil-based resources with renewable resources to offset the use for heating and electricity production are important for today’s social and economic growth and energy security. Anaerobic fermentation and the production of biogas generates an alternative, carbon-n...

Open access Research Article 10.9734/jenrr/2022/v11i130266

Straw Paper for Art Applications – A Paper Development Study

Klaus Dölle, Karl Palmer, Nicolas Palumbo, Brian Neary, Ian Shick & Ian Rothwell · Journal of Engineering Research and Reports · 2022

Each paper grade, especially art papers have their own unique requirements by the artist using the paper in regard to mechanical integrity, surface topography, optical appearance and printability based on the unique artistic process applied during printing. Wheat straw fiber, a l...

Open access Research Article 10.9734/jerr/2022/v22i117518

Original Research Article Paper for Screen Printing Applications – A Paper Development Study

Klaus Dölle · Journal of Engineering Research and Reports · 2021

Screen printing originated in China during the Song dynasty (960-1279 CE) and is used today in commercial and artistic applications. The presented research project describes the development of a screen-printing product for studio art applications. The improvement of the paper pro...

Open access Research Article 10.9734/jerr/2021/v21i917490

Art Paper for Large Wood Relief Block Printing – A Paper Development Study

Klaus Dölle & Hélène Rainville · Journal of Engineering Research and Reports · 2021

Wood relief block printing was developed in China in the seventh century and is used today for many art printing applications. The presented research project describes the development of an art paper product applicable for large wood relief block printing from laboratory scale to...

Open access Research Article 10.9734/jerr/2021/v21i717475

Eucalyptus Pulp Fibers with In-Situ Precipitated Calcium Carbonate – A 12-Inch Laboratory Paper Machine Study

Klaus Dölle & Bardhyl Bajrami · Journal of Engineering Research and Reports · 2021

Paper manufacturing on a global scale is a highly competitive market which requires to constantly improve the manufacturing process to be competitive. To decrease production cost paper manufactures, add filler material prior to sheet forming to replace costly wood fiber based raw...

Open access Research Article 10.9734/jerr/2021/v20i1217424

Beating of Eucalyptus Pulp Fibers under Neutral and Alkaline Conditions – A Valley Beater Study

Klaus Dölle & Bardhyl Bajrami · Journal of Engineering Research and Reports · 2021

Beating is one of the most important and complicated processes that influences paper production and paper quality from both a process and a paper property standpoint. With increasing costs, environmental regulations and competitiveness in the today’s global market, paper and boar...

Open access Research Article 10.9734/jerr/2021/v20i817362

In Situ Precipitated Calcium Carbonate in the Presence of Pulp Fibers – A Beating Study

Klaus Dölle & Bardhyl Bajrami · Journal of Engineering Research and Reports · 2021

The paper industry around the world is in search for new ways to decrease production costs. New approached with additives such as new developed In Situ precipitated paper fillers materials have the potential to reduce production cost and increase profit margins. In Situ precipita...

Open access Research Article 10.9734/jerr/2021/v20i817352

Small Pilot System for the Manufacture of in Situ Precipitated Calcium Carbonate in the Presence of Pulp Fibers

Klaus Dölle & Bardhyl Bajrami · Journal of Engineering Research and Reports · 2021

Paper fillers materials are less expensive than fiber, allowing reduced production costs and improvement of paper properties. A small pilot scale in-situ laboratory calcium carbonate filler precipitation unit was developed and designed with the objective to provide enough pulp fi...

Open access Research Article 10.9734/jerr/2021/v20i517317

The Freshwater Mollusk Dreissena polymorpha (Zebra Mussel) - A Review: Living, Prospects and Jeopardies

Klaus Dölle & David E. Kurzmann · Asian Journal of Environment & Ecology · 2020

This review paper aims to address the topic of the living, prospects as well as jeopardies of the invasive Zebra Mussel. Broad literature reviews have been taken place to gather as many facts on this species as possible to summon all the most significant information up in one pap...

Open access Research Article 10.9734/ajee/2020/v13i230176

Biogas Production from Anaerobic Co-digestion of Water Hyacinth (Eichhornia crassipes) and Cow Manure

Klaus Dölle & Thomas Hughes · Journal of Energy Research and Reviews · 2020

Production of electricity, heat and fuel are important for today’s social and economic growth. Biogas produced by anaerobic co-digestion is an alternative, carbon-neutral, renewable fuel that can be generated from local, low-cost organic materials. Co-digestion of Water Hyacinth...

Open access Research Article 10.9734/jenrr/2020/v5i330149

From Fossil Fuels to Renewable Biogas Production from Biomass Based Feedstock – A Review of Anaerobic Digester Systems

Klaus Dölle, Thomas Hughes & David E. Kurzmann · Journal of Energy Research and Reviews · 2020

Three-quarters of the global energy consumption is expected to come from fossil fuels by 2040 despite many drawbacks to the world’s reliance on fossil fuels. The primary drawback of fossil fuels is in procuring, transporting, refining, and combusting them which generates pollutio...

Open access Research Article 10.9734/jenrr/2020/v5i330147

Application of Ultraviolet Treatment for Paper Production - An Engineering Study

Klaus Dölle, Neil Goodman & William Lawrence · Journal of Engineering Research and Reports · 2020

Ultraviolet (UV) radiation systems are a common method of inactivating bacteria in municipal water treatment but has not been applied in a paper mill operations. Determining the feasibility of installing such a system is the purpose of this report. Directly treating a starch solu...

Open access Research Article 10.9734/jerr/2020/v11i417068

Spruce Woodmeal for Newsprint Applications: A Handsheet Study

Klaus Dölle & Sandro Zier · Journal of Engineering Research and Reports · 2020

This study shows that spruce woodmeal can be an alternative cellulosic-based wood additive               for newsprint applications. This study used unbleached wood flour produced from Spruce  sawdust, ground and sieved to a particle size of 20-40 µm, 40-70 µm, 70-120 µm and 200-...

Open access Research Article 10.9734/jerr/2020/v10i117027

Application of Cationic Tapioca to Unmodified Pearl Corn Starch – A Papermaking Handsheet Study

Klaus Dölle, Emily Parsons & Jacob Konecny · Journal of Engineering Research and Reports · 2020

An handsheet study was performed to compare the application of unmodified pearl corn starch and cationic tapioca starch on 100% recycled paperboard. To analyze the benefits tensile index, Canadian Standard Freeness, and starch retention was measured. The results found that cation...

Open access Research Article 10.9734/jerr/2019/v9i417024

Cannabis, the Plant of the Unlimited Possibilities

Klaus Dölle & David E. Kurzmann · Advances in Research · 2019

This review paper gives an overview of Cannabis Sativa, also known as hemp, which has been cultivated and used century's B.C. due to its medical, hallucinogenic and agricultural properties. Cannabis has been described in 1938 as the billion-dollar plant but has lost its value in...

Open access Research Article 10.9734/air/2019/v20i330161

Hybrid Precipitated Calcium Carbonate Containing Wood Flour for Paper Applications – A Comparative Handsheet Study

Klaus Dölle, Kilian F. Baumgartner, Neil F. Goodman & Alexander Klitsiotisoris · Chemical Science International Journal · 2019

The main objective of this paper handsheet study is to investigate if a hybrid filler material containing wood flour and precipitated calcium carbonate can replace and/or supplement commercially available ground calcium carbonate and precipitated calcium carbonate mineral filler...

Open access Research Article 10.9734/CSJI/2019/v27i230110

Spruce Wood Flour for Paper Applications – A Handsheet Study

Klaus Dölle, Sandro Zier, Luca Lombardi, Tobias Stein & Stefan Winkelbauer · Asian Journal of Chemical Sciences · 2019

Aims: The aim of the study was to investigate if spruce wood flour can be an alternative cellulosic-based wood additive for papermaking. Place and Duration of the Study: This study was conducted at the State University of New York, College of Environmental Science and Forestry in...

Open access Research Article 10.9734/ajocs/2019/v6i118989

Papermaking Using Willow (Salix dasiclados) as a Hardwood Source – A Handsheet and Pilot Paper Machine Study

Klaus Dölle · Asian Journal of Chemical Sciences · 2019

This laboratory handsheet and Fourdrinier pilot paper machine study examine the suitability of willow as a commercial hardwood pulp replacement including utilizing recycled pulp for paper production. The hand sheet study contains 16 different and the pilot paper machine study eig...

Open access Research Article 10.9734/ajocs/2018/v5i218980

Laboratory Bleaching System for Oxygen and Ozone Bleaching

Klaus Dölle & Adrian Honig · Asian Journal of Chemical Sciences · 2018

A multi-functional bleaching equipment for laboratory use was developed. The setup allowed the bleaching of four pulp samples at the same time. The bleaching setup works for traditional oxygen and ozone bleaching, using caustic soda and calcium hydroxides as bleaching additive. T...

Open access Research Article 10.9734/AJOCS/2018/40620

Application of Algae as a Biomass Feedstock Source at a Waste Water Treatment Facility

Klaus Dölle & Catherine Watkins · Journal of Advances in Biology & Biotechnology · 2015

Algae species Cladophora glomerata and Vaucheria are growing in a trickling filter in the secondary treatment process at a Waste Water Treatment Facility. This study investigates the role of the algae and its potential application a as biomass feed source for renewable energy pro...

Open access Research Article 10.9734/JABB/2015/19185

An Application of Hemp as Fiber Material in Art Applications from Past to Present: A Brief Artist Perspective

Kirstin A. Dunlap & Klaus Dölle · Asian Research Journal of Arts & Social Sciences · 2024

Hemp has been a longstanding material choice for textile creations. As far back as early Chinese civilizations humans have been using hemp for items including paper, clothing, rope, and various other household items. As trading moved westward, more civilizations began to pick up...

Open access Research Article 10.9734/arjass/2024/v22i1506

Dual Fueling a Lister Diesel Engine with Producer Gas Generated from Wastepaper and Biosolids

Richard Bates & Klaus Dölle · Journal of Engineering Research and Reports · 2021

The aim of this study is to investigate if wastepaper and biosolids can be used to dual-fuel a small diesel generator with producer gas produced by a tiny Imbert style downdraft gasifier. The waste paper was formed into 20 cm³ to 60 cm³ chunks, dried to a 6% moisture content and...

Open access Research Article 10.9734/jerr/2021/v21i917489

Dual Fueling a Diesel Engine with Producer Gas Produced from Woodchips

Richard Bates & Klaus Dölle · Advances in Research · 2018

The aim of this work was to study the diesel fuel savings in dual fueling a small diesel powered genset with a small Imbert style downdraft gasifier fueled with hardwood wood chips. Eight different runs were conducted, five with the engine fueled with diesel alone to characterize...

Open access Research Article 10.9734/AIR/2018/39431

Syngas Use in Internal Combustion Engines - A Review

Richard P. Bates & Klaus Dölle · Advances in Research · 2017

Syngas is a comparatively low energy fuel gas that can be utilized in spark ignition and compression ignition (diesel) internal combustion engines manufactured to run on gasoline or diesel fuels to reduce or eliminate the petroleum fuel requirement for the engine. Syngas can be p...

Open access Research Article 10.9734/AIR/2017/32896