Urbanization is a global problem but is more pronounced in developing countries. Population growth in developing countries is in line with population movement from rural to urban areas due to easy access to jobs, welfare, and the economy. Indirectly, urbanization will burden urban areas in various vital sectors and contribute directly to waste generation. Unscientific waste handling causes health hazards and urban environmental degradation. Solid Waste Management is a formidable task in Indonesia that will become more complicated with increasing urbanization, changing lifestyles, and increasing consumerism. Several current obstacles related to waste management have made the situation even worse. Current inappropriate waste disposal practices have created severe environmental and public health problems. The purpose of this paper is to critically review the impact of urbanization on waste generation, what is currently being done, and the benefit of integrating a circular economy into waste management to address the waste problem in Indonesia. This review provides an overview of urbanization trends, the projected increase in waste due to urbanization, solid waste status, and current waste management in Indonesia. An integration circular economy approach provides an overview of the benefits of implementing this approach in five crucial sectors in Indonesia. The circular economy approach is expected to be one of the future solutions to the problem of waste management in Indonesia.

Biochar can alleviate several issues, and it should also be inexpensive to produce. Most biochars have a high pore structure and diverse functional groups that assist in the adsorption process. Due to the attributed properties of biochar, several studies have demonstrated that biochar is getting more attention for its efficiency in facilitating wastewater treatment. However, to ensure the feasibility of biochar in wastewater treatment, the factors involved in the preparation of biochar that influences its characteristics and adsorption capacity must be understood. This study reviews the history, characteristics, factors that influence its yield, production methods, application, and recent development of biochar in wastewater treatment.

This study aimed to analyze water quality and control water pollution in the Pucang River in Sidoarjo Regency. The method was used to identify water quality of the 11 parameters and compared them the Government Regulation number 22 of 2021 about water quality standards in Indonesia. Secondary data from 2018 to 2020 were used in this study. Determination of water quality status using the pollution indices method attached in Decree of the State Minister of the Environment number 115 of 2003. Analysis of water pollution control strategies using strengths, weaknesses, opportunities, and threats approach. The condition of the water quality of the Pucang River in 2018–2020, based on the water pollution parameter test, experienced a decrease in the rate indicated by the presence of parameters that exceeded the quality standard. Determination of the quality status of water quality in 2018–2020, there was an increase in water quality marked by the rise in the pollution indices value where the water quality was moderately polluted heavily polluted. The conclusion is that the water quality of the Pucang River in 2018–2020 has decreased from the moderately polluted category to the heavily polluted, and the condition of river water cannot be used for its designation.

Background: Stunting is a condition of toddlers who experience growth failure due to chronic nutrient deficiencies that must be addressed immediately, if children lack nutrients continuously, it can affect their nutritional status and will cause children to be shorter than their age. The purpose of this study was to determine the differences in macronutrient intake in stunted and non-stunted toddlers in Jember, Indonesia. Design and methods: Type of analytical observational research with case control design, sampling technique using simple random sampling. The number of subjects needed in each group is 66 stunting toddlers and 66 non-stunting toddlers with total subjects used are 132 toddlers. Results: There are differences in macronutrient intake: energy, protein, fat, and carbohydrates between stunted and non-stunted toddlers with a higher average value of food intake per day for non-stunted toddlers than for stunted toddlers. Conclusions: There are differences in macronutrient intake between stunted and non-stunted toddlers in Jember, Indonesia with a p-value = 0.000 < 0.05.