海南椰子产业链运转的调查研究

1海南椰子产业链的含义及基本模式1．1椰子产业链的含义海南椰子产业链是指立足于海南省的椰子生产优势，依托省内外市场对椰子系列产品的需求，集中资金、土地、人才、劳动力等生产要素的主要力量，以攻克椰子产品加工技术为动力源，发展椰子主、副产品的加工业，带动海南椰子种植业的发展，推动相关的商业、服务业等第三产业的发展；围绕椰子产品的链状生产，使相应的一、二、三产业互为条件，互为动力，环环相扣，协调发展以获取最大的椰子生产的整链系统效益[1]。1．2基本模式海南椰子产业链的基本模式是：突破椰子的加工技术，创办加工…     

竞合模式:粤西与海南旅游发展的新思路

以湛江、茂名、阳江三市为一级核心的粤西沿海旅游区与海南旅游区的主导旅游资源相似且地域临近，存在竞争关系。分析了粤西、海南实施竞合模式所具有的条件，并利用“竞合模式”探讨了粤西沿海旅游区和海南旅游区的竞争与合作关系，以建立粤西—海南旅游体系为目标，提出了合作战略，以期增强整体的竞争实力，促进旅游业的发展。     

海南发展热带果酒酿造业的前景广阔

果酒原特指新鲜成熟葡萄的发酵产品,现在也适用于许多其它水果、蔬菜汁液发酵生产的饮料。热带水果中诸如香蕉、菠萝、芒果等富含发酵物质,特别适合酿造果酒。其中青绿香蕉果肉含淀粉20％～25％,成熟时含可发酵物质达80％以上。随着市场的发展和人民生活水平的提高,果酒由于度数低、富合营养而独具恁力。海南拥有丰富的热带水果资源,本文就海南发展热带水果果酒酿造业的前景进行了分析。1海南发展果酒前造业的前景分析海南发展果酒酿造业的潜力较大,主要表现在：①热带水果资源丰富。海南日照充足、雨量充沛,水果生产迅速。1994年海…     

海南立昇净水科技实业有限公司

1992年,海南立昇净水科技实业有限公司（以下简称海南立昇）在海口成立。是一家专门从事水处理科研,分离膜技术及产品,家庭净水设备研发、生产、销售和服务的高科技企业集团。     

目睹“垃圾山”

近年来海南各市县的生活垃圾污染严重，成了建设生态省的一大忧患，据记了解，在海南全省18个市县中，目前只有海口、三亚、琼海、儋州四个市已建成和正在建设城市生活垃圾处理厂，其中只有海口市的垃圾处理厂在使用中，其他市县和大量的乡镇，生活垃圾就直接堆放在露天，     

“环保兔”杰咪在中国旅游

杰咪，塔尔狐和海南龟挥手告别那个排放污水的现代化城市，再次踏上了它们的新旅程。     

入世与海南环境管理

我国加入WTO对环境保护和环境管理将产生深远影响，对海南环境保护既是机遇也是挑战。要充分认识入世后对海南环境保护和管理的有利因素和不利影响，采取主动的对策和措施积极应对；要积极转变政府职能，提高行政效能，要正确运用绿色壁垒，争取经济与环保双赢，加强监管，防止污染转嫁；要在发展产业方面积极采用国际环境标准，提高海南产品和企业竞争能力；要加强立法和加快环境标准制定，提高入世环境管理能力。     

加强海南水产养殖资源的开发利用

1海南水产养殖资源丰富海南地处北纬20°03′～23°45′，横跨亚热带、热带和赤道，年日照时数达2000h，年均温22～26℃，冬季温度在20℃以上，水温变幅较小，年均降雨量1600～2000mm。海岸线长达1528km，岛内有天然港湾68个、滩涂2．6万ha、河流154条，具有丰富的水资源以发展淡、海水养殖业。三亚、陵水的珍珠养殖周期比大陆沿海缩短6个月，越冬孵育的鱼苗比华东地区早2个月，是养殖螺旋藻的理想场所，许多优质水产品如鳖、鳗、鲍、蟹、鱼、虾、藻类均可养殖。2水产养殖业在海南经济发展中的地位在海南，水产养殖是“两高一优”农业中效益…     

"环保兔"杰咪在中国旅游

杰咪和塔尔狐、海南龟在扎龙保护区惩罚了独眼猎人后，这一天，它们乘氢气球飞到了一片荒凉之地。     

推动固体废物处理利用行业高质量发展

<正>党的十八大以来，以习近平同志为核心的党中央以前所未有的力度抓生态文明建设，美丽中国建设迈出重大步伐，中华大地正展现出天蓝地绿水清的亮丽新景象。海南是海洋大省，是我国最大的经济特区，是改革开放的重要窗口、试验平台。习近平总书记高度重视海南经济特区生态文明建设，在庆祝海南建省办经济特区30周年大会上强调，海南要牢固树立和全面践行绿水青山就是金山银山的理念，在生态文明体制改革上先行一步，为全国生态文明建设作出表率。党中央支持海南建设国家生态文明试验区，鼓励海南省走出一条人与自然和谐共生的新路子，     

木薯茎秆基质育苗效果研究

以草炭、椰糠为对照,研究腐熟木薯茎秆对番茄、黄瓜、丝瓜、茄子、大吊瓜及西瓜的育苗效果,为木薯茎秆作为育苗基质提供依据。育苗结果表明：（1）原木薯茎秆用于番茄育苗时,其发芽率、株高、茎粗及真叶数与草炭育的番茄效果相当;过2mm筛木薯茎秆对番茄育苗效果不如草炭,但优于椰糠;原木薯茎秆用于黄瓜育苗时,其发芽率、株高、茎粗及真叶数与草炭、椰糠育的黄瓜效果相当;原木薯茎秆对番茄、黄瓜的育苗效果优于过2mm筛木薯茎秆。（2）原木薯茎秆、过2mm筛木薯茎秆对丝瓜、大吊瓜和西瓜的育苗效果不如草炭、椰糠,但对茄子的育苗效果优于椰糠。总的看来,腐熟木薯茎秆可用于番茄、黄瓜、茄子育苗,而不宜单独用于丝瓜、大吊瓜和西瓜育苗。     

Emerging applications of green coconut: A promising lignocellulosic biomass

Waste accumulation is a grave concern and becoming a transboundary challenge for environment. During Covid-19 pandemic, diverse type of waste were collected due to different practices employed in order to fight back the transmission rate of the virus. Covid-19 was proved to be capricious catastrophe of this 20th century and even not completely eradicated from the world. The havoc created by this imperceptible quick witted, pleomorphic deadly virus can't be ignored. Though a number of vaccines have been developed by the scientists but there is a fear of getting this virus again in our life. Medical studies prove that immunity drinks will help to reduce its reoccurrences. Coconut water is widely used among all drinks available globally. Its massive consumption created an incalculable pile of green coconut shells around the different corners of the world. This practice generating enormous problem of space acquisition for the environment. Both the environment and public health will benefit from an evaluation of quantity of coconut waste that is being thrown and its potential to generate value added products. With this context, present article has been planned to study different aspects like, coconut waste generation, its biological properties and environmental hazards associated with its accumulation. Additionally, this review illustrates, green technologies for production of different value added products from coconut waste.     

Optimizing process parameters for the adsorption of phosphorus from synthetic wastewater on coconut shell based activated carbon

Activated carbon was prepared from coconut shell, an agricultural waste, for the removal of phosphorus from synthetic phosphorus‐containing wastewater. The activated carbon obtained from the coconut shell was characterized using Fourier‐transform infrared (FTIR) spectroscopy. Batch mode experiments were conducted to study the effects of pH, particle size, adsorbent dosage, and sorption time on the adsorptive potential of the prepared activated carbon. Response surface methodology was employed to study the interactions among the variables and to optimize the process conditions for the maximum removal of phosphorus using the coconut shell–based activated carbon (CNS). The characterization results from the FTIR showed the presence of variety of functional groups, such as ?OH, ?NH, C=O, C?H, C?N, CH₃, and CH₂, which explains the CNS's improved adsorption behavior on the colloidal particles. A maximum performance of 95.22% was obtained for CNS at the optimum conditions of adsorbent dosage = 1,000 milligrams (local variable), pH 2 (local variable), particle size = 0.2 millimeters (local variable), and sorption time = 4.2 hours (global variable).     

Rubber and pulp plantations represent a double threat to Hainan's natural tropical forests

Hainan, the largest tropical island in China, belongs to the Indo-Burma biodiversity hotspot and harbors large areas of tropical forests, particularly in the uplands. The Changhua watershed is the cradle of Hainan's main river and a center of endemism for plants and birds. The watershed contains great habitat diversity and is an important conservation area. We analyzed the impact of rubber and pulp plantations on the distribution and area of tropical forest in the watershed, using remote sensing analysis of Landsat images from 1988, 1995 and 2005. From 1988 to 1995, natural forest increased in area (979-1040?sq?km) but decreased rapidly (763?sq?km) over the next decade. Rubber plantations increased steadily through the study period while pulp plantations appeared after 1995 but occupied 152?sq?km by 2005. Rubber and pulp plantations displace different types of natural forest and do not replace one another. Because pulp is not as profitable as rubber and existing pulp processing capacity greatly exceeds local supply, considerable pressure exists on remaining upland forests. We recommend for future management that these plantation forests be reclassified as 'industrial', making a clear policy distinction between natural and industrial forestry. Additionally, the local government should work to enforce existing laws preventing forest conversion on marginal and protected areas.     

黄浦江上游原水强化处理选炭试验研究

以黄浦江上游水源为原水,通过煤质炭、竹质炭、椰壳炭等炭种筛选小试和中试试验,研究了黄浦江上游原水中有机污染物强化去除的最佳炭种及其最佳投加量。结果表明黄浦江上游原水中投加PAC能够改善处理后水质,提高原水中有机物的去除效果;并且随着PAC投加量的增加,原水中有机物去除效果增强;综合性价比、碳源等因素确定竹质炭较为经济合理;当竹质炭投加量为10～15mg/L时,处理后出水CODMn可达到3mg/L或以下。     

Green coconut shells applied as adsorbent for removal of toxic metal ions using fixed-bed column technology

This study applies green coconut shells as adsorbent for the removal of toxic metal ions from aqueous effluents using column adsorption. The results show that a flow rate of 2 mL/min and a bed height of 10 cm are most feasible. Furthermore, larger amounts of effluent can be treated for removal of single ions. The breakthrough curves for multiple elements gave the order of adsorption capacity: Cu⁺² > Pb⁺² > Cd⁺² > Zn⁺² > Ni⁺². Real samples arising from the electroplating industry can be efficiently handled.     

Human impacts on Australia's Indian Ocean tropical island ecosystems: A review

Summary The human impact on two tropical island groups in the eastern Indian Ocean — Christmas Island and the Cocos (Keeling) Islands — is described. Both are external territories of the Commonwealth of Australia. The ecological influences of construction, war, coconut plantations, horticulture, mining, the introduction of organisms and tourism are discussed in relation to the islands' geomorphology, hydrology, vegetation, fauna and marine environments.Although there are significant differences in the environment between Christmas Island and Cocos, there are marked parallels in their ecological history. Despite these islands being extremely remote, economic, political and technological changes in the outside world have had substantial effects.There are signs that conservation values in land and resource management on these islands are now being addressed. However, these islands, in common with coral islands and atolls elsewhere, may be on the threshold of a tourism boom, with significant implications for the islands' hydrology as well as their animal and plant communities.Dr Patrick H. Armstrong is a Senior Lecturer in the Department of Geography at the University of Western Australia. An early version of this paper was given to the ASEAN Geography Conference, in Brunei, in June 1990.     

Use of industrial byproducts to filter phosphorus and pesticides in golf green drainage water

Golf courses are vulnerable to phosphate (PO) and pesticide loss by infiltration of the sandy, porous grass rooting media used and through subsurface tile drainage. In this study, an effort was made to remove PO, chlorothalonil, mefenoxam, and propiconazole in a golf green's drainage water with a filter blend comprised of industrial byproducts, including granulated blast furnace slag, cement kiln dust, silica sand, coconut shell-activated carbon, and zeolite. To test this filter media, two 6-h storm events were simulated by repeat irrigation of the golf green after PO and pesticide application. Drainage flows ranged from 0.0034 to 0.6433 L s throughout the course of the simulations. A significant decrease in the chlorothalonil load for the experimental run (with filter media) was observed compared with the control (without filter media) ( < 0.05). In general, percent reductions in chlorothalonil were very high (>80%) near peak flows. In contrast, filter media was not effective in removing PO, mefenoxam, or propiconazole ( > 0.05). Instead, it appears that the filter blend added PO to the effluent above flow rates of 0.037 L s. Overall, flow rate, the amount of filter media used, and contaminant properties may have influenced the filter media's ability to remove contaminants. More research is needed to determine the optimal blend and configuration for the filter media to remove significant amounts of all contaminants investigated.     

The potential of cost-effective coconut husk for the removal of toxic metal ions for environmental protection

Coconut (Cocos nucifera) husk, an agricultural waste, has been thoroughly investigated for the removal of toxic Cd(II), Cr(III) and Hg(II) ions from aqueous media. The parameters like nature and composition of electrolyte, concentration of toxic ions, dosage of coconut husk, and equilibration time between the two phases were optimized for their maximum accumulation onto the solid surface. The effect of common ions on the uptake of metal ions has been monitored under optimal conditions. The variation of retention of each metal ion with temperature was used to compute the thermodynamic quantities DeltaH, DeltaS and DeltaG. The values 18.1+/-0.6 kJmol(-1), 74+/-2 Jmol(-1)K(-1), and -3.8+/-0.04 kJmol(-1) at 298 K; 10.8+/-0.8 kJmol(-1), 48.8+/-2.7 Jmol(-1)K(-1), and -4.6+/-0.3 kJmol(-1) at 298 K; and -37.4+/-2k Jmol(-1), 105+/-7 Jmol(-1)K(-1) and -2.58+/-0.5 kJmol(-1) at 298 K were obtained for Cd(II), Cr(III) and Hg(II) ions, respectively. The sorption data were analysed by applying different sorption isotherms. The sorption capacity and energy were evaluated for each metal ion. The values of the Freundlich constants 1/n and C(m) were 0.92+/-0.04 and 52.6+/-22.2 mmolg(-1); 0.85+/-0.05 and 56.0+/-0.03 mmolg(-1); and 0.88+/-0.03 and 6.84+/-0.45 mmolg(-1) for Cd(II) Cr(III) and Hg(II) ions, respectively. Similarly, the Dubinin-Radushkevich (D-R) constants beta, X(m,) and E were evaluated for the three metal ions. To check the selectivity of the sorbent, sorption of a number of elements was measured under similar conditions. Separation of Zn(II) from Cd(II); Cr(III) from I(I), Zr(IV), Se(IV), and Hg(II) from Se(IV) and Zn(II) can be achieved using this sorbent. This cheap material has potential applications in analytical chemistry, water decontamination, industrial effluent treatment and in pollution abatement.     

Kinetic and equilibrium characterization of uranium(VI) adsorption onto carboxylate-functionalized poly(hydroxyethylmethacrylate)-grafted lignocellulosics

This study investigated the feasibility of using a new adsorbent prepared from coconut coir pith, CP (a coir industry-based lignocellulosic residue), for the removal of uranium [U(VI)] from aqueous solutions. The adsorbent (PGCP-COOH) having a carboxylate functional group at the chain end was synthesized by grafting poly(hydroxyethylmethacrylate) onto CP using potassium peroxydisulphate-sodium thiosulphite as a redox initiator and in the presence of N,N'-methylenebisacrylamide as a crosslinking agent. IR spectroscopy results confirm the graft copolymer formation and carboxylate functionalization. XRD studies confirm the decrease of crystallinity in PGCP-COOH compared to CP, and it favors the protrusion of the functional group into the aqueous medium. The thermal stability of the samples was studied using thermogravimetry (TG). Surface charge density of the samples as a function of pH was determined using potentiometric titration. The ability of PGCP-COOH to remove U(VI) from aqueous solutions was assessed using a batch adsorption technique. The maximum adsorption capacity was observed at the pH range 4.0-6.0. Maximum removal of 99.2% was observed for an initial concentration of 25mg/L at pH 6.0 and an adsorbent dose of 2g/L. Equilibrium was achieved in approximately 3h. The experimental kinetic data were analyzed using a first-order kinetic model. The temperature dependence indicates an endothermic process. U(VI) adsorption was found to decrease with an increase in ionic strength due to the formation of outer-sphere surface complexes on PGCP-COOH. Equilibrium data were best modeled by the Langmuir isotherm. The thermodynamic parameters such as DeltaG(0), DeltaH(0) and DeltaS(0) were derived to predict the nature of adsorption. Adsorption experiments were also conducted using a commercial cation exchanger, Ceralite IRC-50, with carboxylate functionality for comparison. Utility of the adsorbent was tested by removing U(VI) from simulated nuclear industry wastewater. Adsorbed U(VI) ions were desorbed effectively (about 96.2+/-3.3%) by 0.1M HCl. The adsorbent was suitable for repeated use (more than four cycles) without any noticeable loss of capacity.