2021-12-16 · In comparison to pulp made for paper manufacturing, dissolving pulp requires higher purity, higher brightness, more uniform molecular weight distribution, and higher cellulose reactivity (Chen et al. 2016). Dissolving pulp can be used to manufacture regenerated cellulose films (RC film) with good thermal stability, optical transparency, good ...
Sierra et al. (2012) studied the accumulation rates of total carbon in a regrowing tropical forest in the Porce region of Colombia, they reported soil carbon average of 66.5 ± 28.1 t C ha −1, in the first 30 cm which represented the second most important ecosystem carbon pool in the research. Saimun et al. (2021), conducted a research at two ...
High quality sulfuric acid for pH control and water treatment in pulp and paper mills (available in Americas ONLY). Sodium hydrosulfide (NaSH) is used to add sulfidity to cooking liquor in kraft pulp mills. Ethylene amines. Diethylenetriamine (DETA) is used in the wet strength resin and chelates production.
2021-10-19 · Andersson K et al 2019 Koldioxidbudget för Västra Götalan 2020–2040: Del I (2019) s.l.: Klimatledarskapsnoden, Uppsala Universitet, Sverige. Go to reference in article Google Scholar. Besnard S et al 2018 Quantifying the effect of forest age in annual net forest carbon balance Environ. Res. Lett. 13 124018
2 · production of cement, glass, lime, bricks, ceramics, pulp, paper, and cardboard. PHASE TWO (2008-2012): Aviation was introduced in 2012 (>10,000 tCO2/year for commercial aviation; >1,000 tCO2/year for non-commercial aviation since 2013) (see "Aviation" section). A number of countries included NOx emissions from the production of nitric acid.
2017-1-13 · Carbon sequestration is the process of storing carbon that has been collected and removed as CO 2 from the atmosphere. Increasing the greenhouse effect by CO 2 release may be seen as a debt put on future generations; translocating carbon from the atmosphere back to the biosphere mitigates this debt, provided that the removal and subsequent storage last for as …
2020-8-7 · of this carbon debt happens through the regrowth of crops or trees, but this process may take many years. A key assumption when assessing carbon neutrality is the (politically determined) duration of the payback period. The shorter this is, the more difficult it is for certain types of (woody) biomass to be carbon neutral.
2018-4-20 · Aïchi et al. established a model that was proven to be valid over a range of 0.90–5.20% of organic carbon content through the original spectral absorbency of 400~950 nm, which included the near-infrared band. The above studies have shown that visible and near-infrared bands exhibited good statistical relationships with SOC content.
2018-6-14 · LETTER Topography shapes the structure, composition and function of tropical forest landscapes Tommaso Jucker,1,2* Boris Bongalov,1 David F. R. P. Burslem,3 Reuben Nilus,4 Michele Dalponte,5 Simon L. Lewis, 6Oliver L. Phillips, Lan Qie6,7 and David A. Coomes1* Abstract Topography is a key driver of tropical forest structure and composition, as it …
2015-9-10 · Yamashiki T, Matsui T, Saitoh M et al (1990) Characterization of cellulose treated by the steam explosion method. Part 2: effect of treatment conditions on changes in morphology, degree of polymerization, solubility in aqueous sodium hydroxide, and supermolecular structure of soft wood pulp during steam explosion.
Define alluvial sediment. alluvial sediment synonyms, alluvial sediment pronunciation, alluvial sediment translation, English dictionary definition of alluvial sediment. ... Garcia-Tortosa et al., 2008). Upper-pleistocene terrace deposits in Mediterranean climate: geomorphological and source-rock control on mineral and geochemical signatures ...
2018-6-7 · Carbon quantum dot (CQD) is a new class of carbon-based nanomaterial normally with the spatial size less than 20 nm, which was discovered by Xu et al. in 2004 [].The fluorescent carbon nanoparticles were fabricated by Sun et al. via laser ablation of graphite powder in 2006 [] and have been named as "carbon quantum dots (CQDs)" since then.. The fluorescent CQDs …
By Mikaela Weisse and Elizabeth Goldman. The tropics lost 12.2 million hectares of tree cover in 2020, according to new data from the University of Maryland and available on Global Forest Watch.. Of that, 4.2 million hectares, an area the size …
2021-12-14 · Pascoal Neto et al. (2003), chose to keep the temperature constant and change the cooking time when pulping Eucalyptus globulus wood with variable levels of sulfidity (15, 21, 28 and 37%), to obtain pulp with kappa number 14.0 ± 0.3. However, the strategy adopted in the cited work is often not practicable on an industrial scale, since changing ...
2018-1-16 · an entirely new approach for reducing emissions: carbon dioxide capture and sequestration (CCS). Since then, two other commercial CCS projects have started, one in Canada and another in Algeria, and today over 20 million tons (Mt) CO 2 have been sequestered (Riddiford et al. 2003; White et al. 2004).
2018-1-24 · Yamaguchi et al. studied the carbon-γ-Fe 2 O 3 nanoparticle composite of mesoporous carbon, bearing COOH– and phenolic OH– functional groups on its surface as absorbent for radioactive material emitted by the Fukushima Daiichi nuclear power plant accident. It was reported that it had a remarkable and magnetically separable adsorbent power.
This research studies the characterization of activated carbon from tamarind seed with KOH activation. The effects of 0.5 : 1–1.5 : 1 KOH : tamarind seed charcoal ratios and 500–700°C activation temperatures were studied. FTIR, SEM-EDS, XRD, and BET were used to characterize tamarind seed and the activated carbon prepared from them.
Nicholas P. Cheremisinoff, Paul E. Rosenfeld, in Handbook of Pollution Prevention and Cleaner Production, 2010 Odor control. The pulping process uses sulfur compounds to break wood down into pulp. Some of these sulfur compounds escape the process and are released into the atmosphere. Sulfur compounds, such as hydrogen sulfide, dimethyl sulfide, and dimethyl …
2018-11-1 · to cement), or carbon dioxide capture and storage (CCS) Once demonstrated, sufficiently tested, cost-effective, and publicly accepted, these options may contribute to significant climate change mitigation in the future (medium evidence, medium agreement). [10.4] The level of demand for new and replacement products has a
2019-10-17 · This is a consequence of ethylene production as volatile components accumulate from skin and pulp, improving fruit aroma and flavor (Lizada, 1993; Sergent et al., 1993; Singh and Janes, 2001; Tharanathan et al., 2006). The skin of Alphonso mango has an important terpene content, while the pulp is rich in lactone (Chidley et al., 2013).
onto carbon in a series of columns, by upflowing leach solution through columns that are packed with carbon. The process is known as carbon-in-columns (CIC). For mill, agitated-tank leaching operations, gold is extracted directly from the leached pulp in either a carbon-in-leach (CIL), or a carbon-in-pulp (CIP) plant. In both these
2014-4-3 · 1 1c). From 2000 to 2010, gross carbon emissions as a result of forest loss within all industrial concessions for Kalimantan, Sumatra, Papua, Sulawesi, and Moluccas ranged from 4,577 to 8,662 Mt CO 2 or 42–45% of gross carbon emissions from total forest loss (range of values represent carbon dioxide emissions from two scenarios, i) where all lowland forests …
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