cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Dr. Ratih Damayanti
Contact Email
ratih_turmuzi@yahoo.com
Phone
+622187914511
Journal Mail Official
ejournal_wrj@gmail.com
Editorial Address
Research Center for Biomaterials,Indonesian Institute of Sciences Jl. Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia
Location
Unknown,
Unknown
INDONESIA
Wood Research Journal : Journal of Indonesian Wood Research Society
Published by Masyarakat Peneliti Kayu Indonesia
ISSN : 20873840     EISSN : 27749320     DOI : 10.51850/wrj
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Wood Research Journal is the official journal of the Indonesian Wood Research Society. This journal is an international medium in exchanging, sharing and discussing the science and technology of wood. The journal publishes original manuscripts of basic and applied research of wood science and technology related to Anatomy, Properties, Quality Enhancement, Machining, Engineering and Constructions, Panel and Composites, Entomology and Preservation, Chemistry, Non Wood Forest Products, Pulp and Papers, Biomass Energy, and Biotechnology. Besides that, this journal also publishes review manuscripts which topics are decided by the Editors.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 5 Documents
 1 
Search results for , issue "Vol 5, No 1 (2014): Wood Research Journal" : 5 Documents clear
Characteristics of Carbon from Oil Palm Shell Activated by Low Concentration of Zinc Chloride Activator Joko Sulistyo; Purnama Darmadji; Sri Nugroho Marsoem
Wood Research Journal Vol 5, No 1 (2014): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2014.5.1.29-36

Abstract

Currently, a large amount of oil palm shell has been dumped as waste from  palm oil processing  in Indonesia.  Using  a low  concentration  of  zinc   chloride  (ZnCl2),  thermal treatment during  pre-carbonization  was applied  in  the  preparation  of activated carbon from  oil palm shells at various temperatures and reaction durations. This study, therefore, aims to investigate the   physical  and chemical  characteristics  of  activated  carbon  prepared.  Oil palm  shells  collected  from   a plantation  in Palembang were carbonized by  two methods, one-stage carbonization (at 300°C for 3 hours) and two-stage carbonization (at 300°C for 3 hours, then  at  600°C for an  hour)  before chemical activation using ZnCl2, at  a concentration of 10  and 15%wt. Activation of oil palm shell charcoal was conducted at  600,  700,  and 800°C and reaction times  of 60,  120,  and 180  minutes. The results showed two-stage carbonization, high  temperature, and prolonged reaction time is bound to increase burn-off as well  as methylene blue adsorption, and decrease the  yield and volatile matter content of  the  activated carbon prepared. Meanwhile, high  ZnCl2  concentration increased the  ash content and the  methylene blue adsorption. In addition, the  two-stage carbonization  had higher iodine  adsorption  compared to the  one-stage  carbonization.  The activated  carbon with  high  iodine (769.3 mg/g) and methylene blue adsorption (133.7 mL/g) levels was obtained by  two-stage carbonization using 15%wt ZnCl2 at a temperature and reaction time of 800°C and 180 minutes, respectively.
The Characterization of Black-streaked Heartwood in Teak: Inter-tree Variation Ganis Lukmandaru; Tatsuya Ashitani; Koetsu Takahashi
Wood Research Journal Vol 5, No 1 (2014): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2014.5.1.1-9

Abstract

The objective of  this  study was to  investigate the  variation in the  color and chemical characteristics of  black-streaked heartwood of teak and explore the relationship of these chemical properties with the  degree of blackening. The samples used were outer heartwood parts from  11  trees with  black streaks both  thin  and thick and 7  trees with  normal heartwoods for comparison.  The colorimetric  analysis in  CIEL*a*b*  system was used to  determine  the  brightness  values (L*)  of  black- streaked heartwood of teak ranging from  40~49 and a thick portion produced appreciably higher average values of extractive contents including  n-hexane,  ethyl acetate, and total  extractive  content as well as tectoquinone contents and pH values but lower squalene content compared to those in normal wood. The degree of blackening in the  black-streaked  heartwood was highly correlated to its extractive contents, especially the  ethyl acetate soluble extractive content (r = −0.94) while moderate correlations  were measured  between  the  brightness  index  and  tectoquinone content (negative)  and squalene (positive). Moreover, no  significant difference was found in the  ash and individual inorganic elements contents between the  group. The increase  in  pH   values  was observed  to  have  corresponded with  a decrease  in  brightness  (r  = -0.75).  Therefore,  the blackening was assumed to be  due to the  polymerization of quinones in weakly acidic conditions
Measurement of Microfibril Angle Using X-Ray Diffraction and Light Microscope on 5-year-old Super and Conventional Teak Wood Setiowati Setiowati; Ratih Damayanti; I. Ketut N. Pandit; Fauzi Febrianto; Gustan Pari
Wood Research Journal Vol 5, No 1 (2014): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2014.5.1.10-17

Abstract

The long   harvest time  causes the   processing  industry  manufactured  from   teak  wood (Tectona  grandis L.  f.)  has experienced  a lot of declines. To overcome this  problem,  currently,  in Indonesia  many types  of fast-growing  teak  have been developed, one of which is Jati Unggul Nusantara (JUN). Trees that  are accelerated in growth, are likely to cause changes in their  anatomical  structure. The anatomical  structure of wood is one of the  basic  properties  that  greatly influences  the  use of wood as a raw  material. Even small changes in cell shape and size can change the  properties of wood as a raw  material. One of the  anatomical  structures of wood, namely the  ultramicroscopic  structure that  affects the  quality  of wood, is the  microfibril angle (MFA). The purpose of this  study is to determine  the  MFA of JUN at the  planned cutting  age of 5 years, compared to conventional teak at  the  same age. There are two  methods used, namely using X-Ray Diffraction (XRD) and measuring the elongation  of  the  pit  apertures slope of  the  fiber  cells using  a light  microscope,  which was obtained from  the  maceration process. As  a result, JUN's MFA is 22.09°, smaller than  the  conventional teak of 25.29°. This is because JUN was developed from  top  cuttings  so  although  still  young, it  already  reflects  the   characteristics  of  mature teak. The results of  the  MFA measurements on  JUN using two  methods (XRD and light microscope), resulted different values. It is different from  the  MFA measurement results on  conventional teak. It is recommended to  measure the MFA in JUN wood by  using XRD, because possibly, due to accelerated  growth, simple pits with an  oval shape turn  into circular. This difference causes the  results of the JUN MFA measurement using a light microscope based on the  pit apertures slope to be  inconsistent, subjective, and different results  in  other  pits   contained  in  the   fiber   even  though they  are  closely  associated. However,  in  conventional  teak, measurements using a light microscope are possible because the  shape of the  pit is oval so  that  the  slope of the  elongation of the  pit aperture can be  determined easily, and is more consistent with more uniform values in the  same individual fiber
The Effectiveness of Boron Preservatives to Prevent Dry-wood Termite Attack on Mahogany Sapwood Aryati Larasati; Joko Sulistyo
Wood Research Journal Vol 5, No 1 (2014): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2014.5.1.18-22

Abstract

Mahogany wood  is utilized for many furniture products and construction purposes. The objective of this experiment was to  prevent  wood-destroying  insects  by   using  boron  preservatives  such as boric  acid  and borax.   Materials  used were mahogany  sapwood  planks  (19   years)  obtained  from   community  forest  in  Kali  Bawang  District,  Kulon  Progo.  Two preservation  methods,  i.e.,  hot-soaking  (1,   2,   and  3  hours) and  the   cold-soaking  (12,   24,   36,   and  48  hours)  in  5% concentration,  were used. The drywood termites  (Cryptotermes  cynocephalus Light)  were used for  observation.  The result showed that  the  retention  value ranges were 4.25  to 12.99  kg/m3  for cold-soaking  method and 3.09  to 9.53  kg/m3  for heat- soaking method. Mortaliy rate and mass loss  due to termite attacks ranged from  56.0  to 80.6  % (control values : 43.3%) and 850  to  1370  mg  (control values : 1930  mg). Significant interaction between soaking time and the  type of  preservative was observed to  discover its  effect on  the  levels of  retention (cold soaking) and mortality rate of  termites (hot  soaking). Boron preservatives tended to enhance the  repellent properties than  its toxicity.
Study of Provenance and Site Variability on Calorific Value and Other Fuel Properties of Teak Stem Asri Prasaningtyas; Joko Sulistyo
Wood Research Journal Vol 5, No 1 (2014): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2014.5.1.23-28

Abstract

Currently  Perum Perhutani has  conducted  efforts  to  improve  the   productivity  of  teak  forest  by   provenance  trial. However, only a few  studies have so  far considered the  variation of these main  fuel  properties of wood under the  influence of external factors such as location and provenance. On the  other side, the  huge amount of waste was regularly generated from primary  and secondary  wood processings.  Therefore, in  this  research, the  calorific  value  and other fuel  properties  were investigated and related to provenance and growth site. This research used the  stem wood and bark of five provenances (1 to 5) of teaks that  were planted at  three sites  of Perhutani stand (Bojonegoro, Ngawi, Ciamis). The fuel  characterisctics of bark were only evaluated  at  Ciamis  site.  Compared  to  bark, wood generally had lower values  in  ash content, volatile  matter content, and density,  but  had higher values in fixed  carbon content, calorific  value, and Fuelwood Value Index levels. The caloric  values of  teak  wood and  bark were 4,191~4,520 cal/g  and 3,545~3,939 cal/g,  respectively.  Provenance and site interaction had significant effect to the ash content, density, and calorific value in wood. The samples from  Ciamis site (code Ft) had the  highest level  in  calorific  value. However, the  relation  between calorific  value and density  is  not  clear in  this experiment. With regard to bark, provenance 3 (Ft) showed the  best energy properties.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2014 2014


Reset
Filter By Issues
All Issue Vol 13, No 2 (2022): Wood Research Journal Vol 13, No 1 (2022): Wood Research Journal Vol 12, No 2 (2021): Wood Research Journal Vol 12, No 1 (2021): Wood Research Journal Vol 11, No 2 (2020): Wood Research Journal Vol 11, No 1 (2020): Wood Research Journal Vol 10, No 2 (2019): Wood Research Journal Vol 10, No 1 (2019): Wood Research Journal Vol 9, No 2 (2018): Wood Research Journal Vol 9, No 1 (2018): Wood Research Journal Vol 7, No 1 (2016): Wood Research Journal Vol 6, No 2 (2015): Wood Research Journal Vol 6, No 1 (2015): Wood Research Journal Vol 5, No 1 (2014): Wood Research Journal Vol 4, No 2 (2013): Wood Research Journal Vol 4, No 1 (2013): Wood Research Journal Vol 3, No 2 (2012): Wood Research Journal Vol 3, No 1 (2012): Wood Research Journal Vol 2, No 2 (2011): Wood Research Journal Vol 2, No 1 (2011): Wood Research Journal Vol 1, No 2 (2010): Wood Research Journal Vol 1, No 1 (2010): Wood Research Journal More Issue