Results 81 to 90 of about 27,091 (266)

Pengaruh Kondisi Proses Terhadap Yield dan Kadar Lignin Pulp dari Pelepah Sawit dengan Proses Asam Formiat

Jurnal Rekayasa Kimia & Lingkungan, 2012
Formic acid pulping of oil palm frond was conducted to study the influence of process variables (formic acid concentration, hydrogen peroxide concentration, and pulping time) on the properties of pulp produced (yield pulp and lignin content).
Zulfansyah Zulfansyah, Muhammad Iwan Fermi, Said Zul Amraini, Hari Rionaldo, Meilany Sri Utami   +4 more
doaj   +2 more sources

Effect of the Harvest Date on the Chemical Composition of Patauá (Oenocarpus bataua Mart.) Fruits from a Forest Reserve in the Brazilian Amazon

International Journal of Agronomy, 2012
This study aims to evaluate the effect of harvest date on the chemical composition of patauá (Oenocarpus bataua Mart.). Fruits were harvested monthly during the harvest season (June–December, 2009) from native plants in the Adolpho Ducke Forest Reserve ...
Raimundo Silva de Souza, Jerusa Souza Andrade, Suely de Souza Costa   +2 more
doaj   +1 more source

A Cost‐Effective Hybrid Method For Homogeneous Matrix Coating in Matrix‐Assisted Laser Desorption/Ionization Mass Spectrometry Imaging Using Simultaneous Spin and Spray Deposition

Analysis &Sensing, EarlyView.
This study introduces an in‐house spin coater for matrix‐assisted laser desorption/ionization mass spectrometry imaging, providing homogeneous matrix deposition via simultaneous spray and spin. The approach yields reproducible signals and clear metabolite distributions in complex tissues.
Lanaia Ítala Louzeiro Maciel, Jussara Valente Roque, Almir Custodio Batista Junior, Gabriel Henry Morais Dufrayer, Naará da Silva Balbino, Keilah Valéria Naves Cavalcante, Marcos Divino Ferreira Junior, Andrea Rodrigues Chaves, Boniek Gontijo Vaz   +8 more
wiley   +1 more source

Study on the Synergistic Effects and Optimization of Flotation Reagent Blends Under Low Reagent Consumption

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Under low reagent dosage, the flotation performance of diesel as a collector was enhanced, and the synergistic mechanism of diesel blended with oleic acid and CTAB was investigated. Results showed that compared to pure diesel, the oleic acid blended system (Blend A) increased clean coal yield by 81.52% to 92.24%, while the CTAB blended system (
Rui Shen, Wei Zhou, Huanhuan Shang
wiley   +1 more source

Mechanistic Insights Into Cellulose Dissolution in Solvents for Advanced Industrial Applications: A Systematic and Bibliometric Review

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Cellulose dissolution is important for various industries, including textiles, bioplastics, foods and pharmaceuticals, yet achieving efficient dissolution remains challenging. Deep eutectic solvents (DES) have emerged as promising alternatives to traditional solvents due to their low toxicity, biodegradability and sustainability.
Chigozie Charity Okwuwa, Fatmawati Adam, Michael E. Ries, Nor Hanuni Ramli, Samuel Olugbenga Olunusi   +4 more
wiley   +1 more source

Modification of Larch High-Yield Pulps with Ozone.

JAPAN TAPPI JOURNAL, 1996
カラマツから高収率パルプを製造する目的で, カラマツチップからTMPを製造したが, 他の針葉樹から製造される GP 程度の強度しか示さなかった。得られたパルプ繊維も剛直であったため, 木材チップを化学薬品で前処理を施して, 木材組織を軟化させてからリファイニングを行う, いわゆるCTMP法を用いてカラマツから高収率パルプを製造することを試みた。木材チップの化学的前処理に用いた薬品はサルファイト系で, バイサルファイト, 中性サルファイト, アルカリ性サルファイトのそれぞれpHの異なる3種の薬液を用いた。強度的には, バイサルファイト処理した木材チップから得られたCTMPが最も優れていたが, それでも相対的にはエゾマツからのTMP程度の強度でしかなかった。パルプの強度的性質をさらに向上させる方法として,
openaire   +2 more sources

Influence of Botanical Origin on the Optical, Surface, and Nanomechanical Properties of Nanocellulose‐Based Films: A Comparative Study

Journal of Applied Polymer Science, EarlyView.
Schematic representation of the processing and multiscale characterization of nanocellulose films from different botanical sources. ABSTRACT Although the influence of botanical origin on nanocellulose properties is well recognized, an integrated multiscale framework linking chemical composition, fractal surface descriptors, and nanomechanical behavior ...
Márcia da Silva Costa, Erveton Pinheiro Pinto, Mário Vanoli Scatolino, Rodrigo Prioli Menezes, Adriano Reis Prazeres Mascarenhas, Matheus Cordazzo Dias, Gustavo Henrique Denzin Tonoli, Lina Bufalino, Francisco Tarcísio Alves Junior, Tiago Marcolino de Souza   +9 more
wiley   +1 more source

The Influence of Chip Size Variation in the Pulping Process from Jabon Wood

Indonesian Journal of Chemical Research
Wood is the primary raw material in the pulp and paper industry. Due to its favorable fiber characteristics, Jabon wood (Anthocephalus cadamba Miq.) is a promising fast-growing pulp and paper production species. This study investigates the effect of nine
Fitria Cita Dirna, Irma Wahyuningtyas
doaj   +1 more source

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications

The Anatomical Record, EarlyView.
Abstract A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X‐ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D.
Tristen Lafferty, Luke A. Norton, Aliénor Duhamel, Julien Benoit   +3 more
wiley   +1 more source

DEVELOPMENT OF A NOVEL EMPIRICAL MODEL TO ESTIMATE THE KRAFT PULP YIELD OF FAST-GROWING EUCALYPTUS

BioResources, 2012
In this study, several kraft pulps were produced by kraft pulping of fast-growing Eucalyptus with a wide range of cooking conditions. The dependences between pulp yields and some pulp properties, namely, kappa number, HexA contents, and cellulose ...
Jing Liu,, Huichao Hu,, Xiaolin Luo,
doaj