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·Ultramafic rocks are derived from ferromagnesian rich mantle and composed mainly of mafic minerals magnesium iron and siderophile elements such as nickel Brooks 1987 Proctor et al 2000 that weather in tropical humid climates to form thick lateritic red soils Baillie et al 2000 Ultramafic bedrock is widespread and extensive in Indonesia such as in
·Acid mine water AMD can cause significant environmental hazards due to its high concentration of metal ions so the development of effective treatment methods is essential to mitigate its impact
·Bamboo belongs to the Poaceae grass and Bambusoideae family and subfamily respectively and has over 115 and 1400 separated genera and species worldwide respectively [4] It is commonly found in the Pacific and Indian Ocean islands of South Eastern and Eastern Asia Bamboo is a high biomass producing non wood forest crop which is versatile and fast
·French mining company Eramet is in discussions with Zhejiang Huayou Cobalt to establish a battery grade nickel production partnership in Indonesia reported Bloomberg News The two companies are looking to potentially form a partnership for the production of battery grade nickel a key component for electric vehicle EV batteries
·Low CO2 cement production with activated clay thyssenkrupp to build first industrial scale plant in Cameroon Facebook X Email LinkedIn Xing WhatsApp Multi Tracks thyssenkrupp to build first industrial scale plant in Cameroon Facebook X Email LinkedIn Xing WhatsApp Multi Tracks Evelin Veit Head of Communications Telephone 49 201
·Geosynthetic clay liners GCLs are usually employed as hydraulic barriers because of their low hydraulic conductivity to water Bouazza 2002 Now they are gradually applied in mining facilities heap leach pads brine evaporation ponds waste rock dumps etc Hornsey et al 2010 Therefore GCLs would be undergone the new environmental loads
·Alkali activated materials AAMs have been a subject of much research over the past decades because of their potential to have a lower environmental impact and higher durability than Portland cement based materials [[1] [2] [3]] AAMs are one of the leading options in an emerging toolkit of cements alongside limestone calcined clay LC3 and belite
·Today Indonesia is the seventh largest copper producer In 2023 percent of exploration investment in Indonesia s mining sector went to copper—the second highest behind only gold Whether this exploration spending will result in the actual development of mines—along with requisite downstream processing facilities and power
·The block caving mining method has become increasingly popular in the last two decades Meanwhile Indonesia has several potential ore bodies which have not yet determined suitable mining methods The references to block caving mining projects worldwide and the potency of metal deposits in Indonesia were reviewed to determine the requirements
·The plant is constructed from PVC and concrete bricks that are available in the near vicinity of the plant In Indonesia this kind of plant has been installed in about 50 remote locations in Kalimantan Sumatra and Java Fig 6 Micro hydraulic mobile water treatment plant in operation after big flooding south of Bandung February 2007
·Smectite based geosynthetic clay liners GCLs are popularly employed as hydraulic barriers due to their low permeability and high swelling capacity The exposure of GCLs to aggressive inorganic permeants is inevitable in the majority of field applications GCLs exhibit inferior hydraulic properties and low swelling in these scenarios due to the concomitance of
·Blue Ca 4 MgAl 2 Si 3 O 14 Ce 3 Li phosphor with excellent performance for human centered green plant growth lighting Author links open overlay panel Zheng Lu a b which plays a pivotal role in plant photosynthesis has received limited attention in research due to the challenges associated with synthesizing a blue phosphor exhibiting
·Montmorillonite with chemical formula Na Ca Al Mg 2 Si 4 O 10 OH 2n H 2 O is a very soft phyllosilicate group of minerals was first described in 1847 for an occurrence in Montmorillon in the department of Vienne France more than 50 years before the discovery of bentonite in the US [1] Its structure is well known nearly 7 decades [2] Several classification
·Conventional activated sludge system is confidently widely used for biological treatment plants of municipal wastewater but suffering from operation problems that affect their efficiencies and effluent qualities especially when treating low strength wastewater with increasing incoming flow The objective of this study is to evaluate and compare the novel
·To seek a restoration plan for the safe use of agricultural land around mining areas this study focuses on the regions around a mining plant in Huidong County western Sichuan Province affected by lead zinc mining and the precise remediation of heavy metal pollution through large scale synthesis of iron silicate In this study we investigated heavy
4 ·Secondary clarifier performance depends on numerous factors including activated sludge characteristics settleability hydraulic loading rate solids loading rate return activated sludge flow and physical features of the clarifier Biological factors Activated sludge settleability is a critical factor in secondary clarifier performance
·This review provides the first comprehensive introduction to plant based activated carbon for EDLCs It categorizes plant based raw materials into four main groups 1 agricultural and forestry plants including trees bamboo straw rice husks and corn cobs; 2 aquatic plants such as water hyacinths and lotus leaves; 3 fruit shells including those of
·Geopolymers offer a number of benefits including high sorption capacity sufficient durability and substantial mechanical strength as well as low CO2 emission and limited drying shrinkage which may make them sustainable candidates to be utilized as landfill liner materials Hence this research is aimed at evaluating how a clay fly ash geopolymer can meet
·Clays are among the most widespread sedimentary rocks which are mainly composed of clay minerals like kaolinite illite montmorillonite and other aluminum silicates as well as other various
·Indonesia has borne adverse impacts from anthropogenic carbon dioxide CO 2 emanations primarily arising out from burning fossil fuels and the depletion of rain forests Adisaputro and Saputra 2017; Climate Transparency 2020; Iskandar and Syahrial 2022 These repercussions present severe threats to the country s biodiversity ecosystems and
·Huayou in May took a 20% stake in a larger HPAL project in Indonesia without saying when that plant would launch while another Indonesian HPAL scheme led by GEM Co is targeting start up in 2022
·Table 1 shows that the performance measurement process prioritizes non financial performance Collier 1992 revealed that an assessment of financial performance has a small portion in BEM However most non financial performance indicators actually positively impact financial performance Four non financial indicators in BEM support the company s
·Geosynthetic clay liners GCLs are commonly used for hydraulic barriers for landfill applications This geomaterial consist of a thin layer of bentonite 2 set between two geotextiles Bentonite is a highly reactive clay because of its high specific surface and known to be used for hydraulic containment applications as a soil amendment in landfill liner or cap
