@article{wu_chen_jameel_chang_phillips_jin_2020, title={Effects of Lignin Contents and Delignification Methods on Enzymatic Saccharification of Loblolly Pine}, volume={59}, ISSN={["0888-5885"]}, DOI={10.1021/acs.iecr.0c00645}, abstractNote={Softwood pulp is more recalcitrant toward enzymatic hydrolysis than hardwood or nonwood pulps. Pulps of various kappa numbers were prepared from loblolly pine chips by kraft cooking, which was foll...}, number={18}, journal={INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH}, author={Wu, Shufang and Chen, Hui and Jameel, Hasan and Chang, Hou-min and Phillips, Richard and Jin, Yongcan}, year={2020}, month={May}, pages={8532–8537} }
 @article{chen_han_venditti_jameel_2015, title={enzymatic hydrolysis of pretreated newspaper having high lignin content for bioethanol production}, volume={10}, DOI={10.15376/biores.10.3.4077-4098}, abstractNote={Recovered papers are suitable biomass sources for conversion into sugars that can be used in bioethanol production. However, paper materials with a high lignin content have been found to be recalcitrant to enzymatic hydrolysis. To address this issue, several biomass pretreatment methods were employed to evaluate their efficiency on the conversion of newspaper with high lignin content to sugar. Autohydrolysis, a hot water treatment, was identified to adversely affect sugar conversion, presumably as a result of pore collapse under high-temperature pretreatment. Flexo ink, used in newspaper printing, had no effect on the enzymatic hydrolysis, with or without autohydrolysis. The ink was still detachable after autohydrolysis, as measured by hyperwashing. Compared to untreated newspaper, separate treatments of either mechanical refining or a non-ionic surfactant (sorbitan polyoxyethylene monooleate) improved the sugar conversion by 10% at enzyme dosages of 2 and 8 FPU/g substrate. The combination of both refining and surfactant resulted in the highest sugar conversions, i.e., 46.3%, 56.7%, and 64.1% at 2, 4, and 8 FPU/g enzyme dosages, respectively. Oxidative pretreatment (oxygen, 100 °C) marginally increased the sugar conversion, whereas alkaline and green liquor (NaCO3 and Na2S) pretreatments (at 160 °C) had either no effect or decreased the sugar conversion. Based on the results of the pretreatments, higher pretreatment temperatures of newsprint negatively impacted subsequent enzyme hydrolysis.}, number={3}, journal={BioResources}, author={Chen, H. and Han, Q. and Venditti, Richard and Jameel, H.}, year={2015}, pages={4077–4098} }
 @article{chen_han_daniel_venditti_jameel_2014, title={Conversion of Industrial Paper Sludge to Ethanol: Fractionation of Sludge and Its Impact}, volume={174}, ISSN={0273-2289 1559-0291}, url={http://dx.doi.org/10.1007/s12010-014-1083-z}, DOI={10.1007/s12010-014-1083-z}, number={6}, journal={Applied Biochemistry and Biotechnology}, publisher={Springer Science and Business Media LLC}, author={Chen, Hui and Han, Qiang and Daniel, Kevin and Venditti, Richard and Jameel, Hasan}, year={2014}, month={Aug}, pages={2096–2113} }
 @article{chen_venditti_gonzalez_phillips_jameel_park_2014, title={Economic evaluation of the conversion of industrial paper sludge to ethanol}, volume={44}, ISSN={0140-9883}, url={http://dx.doi.org/10.1016/j.eneco.2014.04.018}, DOI={10.1016/j.eneco.2014.04.018}, abstractNote={The conversion of industrial paper sludge to ethanol was simulated using engineering process simulation software loaded with laboratory generated conversion data and financially analyzed. In one scenario, sludge is fractionated to remove ash, generating a higher concentration carbohydrate stream for separate hydrolysis and fermentation (SHF). In a second scenario, non-fractionated sludge is processed with only pH adjustment. Four primary sludges from mills producing either virgin or recycled paper were analyzed and the experimental conversion results used to inform the simulations. Financial analysis was conducted assuming ethanol wholesale price of US$ 0.608 per liter. The most profitable case was fractionated virgin sludge (from a virgin paper mill) to ethanol (F-VK1) with a net present value (NPV) of US$ 11.4 million, internal rate of return (IRR) of 28%, payback period of 4.4 years and minimum ethanol revenue (MER) of US$ 0.32 per liter. Risk analysis showed that the F-VK1 case obtained a near 100% probability of business success with both central and bearish (pessimistic) assumptions.}, journal={Energy Economics}, publisher={Elsevier BV}, author={Chen, Hui and Venditti, Richard and Gonzalez, Ronalds and Phillips, Richard and Jameel, Hasan and Park, Sunkyu}, year={2014}, month={Jul}, pages={281–290} }
 @article{chen_venditti_jameel_park_2012, title={Enzymatic Hydrolysis of Recovered Office Printing Paper with Low Enzyme Dosages to Produce Fermentable Sugars}, volume={166}, ISSN={0273-2289 1559-0291}, url={http://dx.doi.org/10.1007/s12010-011-9498-2}, DOI={10.1007/s12010-011-9498-2}, number={5}, journal={Applied Biochemistry and Biotechnology}, publisher={Springer Science and Business Media LLC}, author={Chen, Hui and Venditti, Richard A. and Jameel, Hasan and Park, Sunkyu}, year={2012}, month={Jan}, pages={1121–1136} }
 @inproceedings{chen_gonzalez_phillips_venditti_jameel_park_2012, title={Exploring the potential of paper industry sludges for ethanol production}, booktitle={Proceeding of the 4th International Conference on Pulping, Papermaking and Biotechnology (ICPPB '12), vols. I and II}, author={Chen, H. and Gonzalez, R. and Phillips, R. and Venditti, R. and Jameel, H. and Park, S.}, year={2012}, pages={1040–1043} }