scholarly journals Penentuan Jenis Baja Scrap sebagai Bahan Baku Proses Pengecoran Logam di IKM dengan Metode Spark Testing

2021 ◽  
Vol 16 (3) ◽  
pp. 345
Author(s):  
Muchammad Iqbal Riza Firmansyah ◽  
Marno Marno ◽  
Jojo Sumarjo

<p>Sampah merupakan salah satu permasalahan perkotaan yang menjadi masalah sosial, ekonomi, dan budaya. Dan hampir disemua kota di Indonesia mengalami kendala dalam mengelola sampah. Sama halnya seperti yang terjadi di wilayah Karawang, Jawa barat. Untuk itu pada penelitian ini akan dilakukan perancangan PLTSa sebagai solusi pemanfaatan sampah. Salah satu bagian dari Pembangkit Listrik Tenaga Sampah (PLTSa) adalah cerobong. Yang menjadi permasalahan dari pembakaran sampah adalah asap, bau, dan panas yang dihasilkan. Pada penelitian ini penulis membuat mesin cerobong incinerator PLTSa dengan sistem air pollution control untuk mengurangi emisi gas buang hasil pembakaran sampah di incinerator. Dari hasil pengujian cerobong incinerator PLTSa dengan sistem air pollution control suhu output terbesar 35,6℃, untuk uji emisi gas buang kandungan CO pada cerobong sebelum di filter 0,64% dan kadar HC 82 ppm dan setelah menggunakan filter menjadi 0,46% dan kadar HC sebesar 68 ppm. Selanjutnya terjadi juga perubahan pada kandungan CO2, tidak menggunakan filter sebesar 9,7% dan kadar O2 sebesar 10,97%. Ketika menggunakan filter, kandungan CO2  menurun menjadi 6,3% dan kandungan O2 meningkat menjadi 14,11%.</p>

2021 ◽  
Vol 14 (2) ◽  
pp. 116-128
Author(s):  
Wenjun Yan

Abstract In 2015, the All-China Environment Federation v Dezhou Jinghua Group Zhenhua Corporation Limited case was the first civil environmental public interest litigation (CEPIL) against air pollution in China. Constituting a milestone in the field of air pollution control in China, this case (i) confirms the eligibility of a non-governmental organisation (NGO) to file civil public interest litigations; (ii) discusses remedies for the ecological destruction caused by air pollution; (iii) assesses the ecological and environmental damage using the ‘virtual restoration cost’ method; and (iv) uses public apology as an innovative way for Zhenhua to assume liability. By applying and interpreting several important rules under the Environmental Protection Law of China (EPLC) for the first time, this case sets an example for future CEPILs against air pollution in China.


2021 ◽  
Vol 305 ◽  
pp. 127093
Author(s):  
Yao Tao ◽  
Yunna Wu ◽  
Jianli Zhou ◽  
Man Wu ◽  
Shiman Wang ◽  
...  

2021 ◽  
Vol 13 (12) ◽  
pp. 6600
Author(s):  
Jing Li ◽  
Lipeng Hou ◽  
Lin Wang ◽  
Lina Tang

The Chinese government has implemented a number of environmental policies to promote the continuous improvement of air quality while considering economic development. Scientific assessment of the impact of environmental policies on the relationship between air pollution and economic growth can provide a scientific basis for promoting the coordinated development of these two factors. This paper uses the Tapio decoupling theory to analyze the relationship between regional economic growth and air pollution in key regions of air pollution control in China—namely, the Beijing–Tianjin–Hebei region and surrounding areas (BTHS), the Yangtze River Delta (YRD), and the Pearl River Delta (PRD)—based on data of GDP and the concentrations of SO2, PM10, and NO2 for 31 provinces in China from 2000 to 2019. The results show that the SO2, PM10, and NO2 pollution in the key regions show strong and weak decoupling. The findings additionally indicate that government policies have played a significant role in improving the decoupling between air pollution and economic development. The decoupling between economic growth and SO2 and PM10 pollution in the BTHS, YRD, and PRD is better than that in other regions, while the decoupling between economic growth and NO2 pollution has not improved significantly in these regions. To improve the relationship between economic growth and air pollution, we suggest that the governments of China and other developing countries should further optimize and adjust the structure of industry, energy, and transportation; apply more stringent targets and measures in areas of serious air pollution; and strengthen mobile vehicle pollution control.


2013 ◽  
Vol 248-249 ◽  
pp. 159-166 ◽  
Author(s):  
Gudny Okkenhaug ◽  
Gijs D. Breedveld ◽  
Terje Kirkeng ◽  
Marit Lægreid ◽  
Trond Mæhlum ◽  
...  

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